./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c --full-output --preprocessor.use.memory.slicer false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 20:53:13,381 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 20:53:13,484 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 20:53:13,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 20:53:13,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 20:53:13,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 20:53:13,525 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 20:53:13,526 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 20:53:13,526 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 20:53:13,530 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 20:53:13,531 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 20:53:13,531 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 20:53:13,532 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 20:53:13,533 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 20:53:13,533 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 20:53:13,534 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 20:53:13,534 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 20:53:13,534 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 20:53:13,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 20:53:13,535 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 20:53:13,535 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 20:53:13,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 20:53:13,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 20:53:13,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 20:53:13,536 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 20:53:13,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 20:53:13,537 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 20:53:13,537 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 20:53:13,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 20:53:13,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 20:53:13,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 20:53:13,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 20:53:13,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 20:53:13,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 20:53:13,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 20:53:13,540 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 20:53:13,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 20:53:13,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 20:53:13,541 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 20:53:13,541 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 20:53:13,541 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 20:53:13,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 20:53:13,541 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 20:53:13,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 20:53:13,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 20:53:13,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 20:53:13,838 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 20:53:13,838 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 20:53:13,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2023-11-22 20:53:15,043 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 20:53:15,385 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 20:53:15,386 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2023-11-22 20:53:15,405 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad9c4b112/d00ddd5a598a41eaa6fdf29ee177159e/FLAG5a55a02a1 [2023-11-22 20:53:15,418 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad9c4b112/d00ddd5a598a41eaa6fdf29ee177159e [2023-11-22 20:53:15,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 20:53:15,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 20:53:15,422 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 20:53:15,422 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 20:53:15,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 20:53:15,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:53:15" (1/1) ... [2023-11-22 20:53:15,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585527d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:15, skipping insertion in model container [2023-11-22 20:53:15,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:53:15" (1/1) ... [2023-11-22 20:53:15,516 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 20:53:15,978 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2023-11-22 20:53:16,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 20:53:16,035 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 20:53:16,044 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2023-11-22 20:53:16,046 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [716] [2023-11-22 20:53:16,046 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [754] [2023-11-22 20:53:16,046 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [875] [2023-11-22 20:53:16,046 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1230] [2023-11-22 20:53:16,047 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2746] [2023-11-22 20:53:16,047 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2837] [2023-11-22 20:53:16,048 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2846] [2023-11-22 20:53:16,048 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [2861] [2023-11-22 20:53:16,049 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2950] [2023-11-22 20:53:16,178 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2023-11-22 20:53:16,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 20:53:16,228 INFO L206 MainTranslator]: Completed translation [2023-11-22 20:53:16,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:16 WrapperNode [2023-11-22 20:53:16,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 20:53:16,229 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 20:53:16,230 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 20:53:16,230 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 20:53:16,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:16" (1/1) ... [2023-11-22 20:53:16,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:16" (1/1) ... [2023-11-22 20:53:16,308 INFO L138 Inliner]: procedures = 90, calls = 338, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 817 [2023-11-22 20:53:16,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 20:53:16,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 20:53:16,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 20:53:16,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 20:53:16,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:16" (1/1) ... [2023-11-22 20:53:16,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:16" (1/1) ... [2023-11-22 20:53:16,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:16" (1/1) ... [2023-11-22 20:53:16,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:16" (1/1) ... [2023-11-22 20:53:16,366 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:16" (1/1) ... [2023-11-22 20:53:16,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:16" (1/1) ... [2023-11-22 20:53:16,398 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:16" (1/1) ... [2023-11-22 20:53:16,402 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:16" (1/1) ... [2023-11-22 20:53:16,426 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 20:53:16,427 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 20:53:16,427 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 20:53:16,427 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 20:53:16,428 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:16" (1/1) ... [2023-11-22 20:53:16,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 20:53:16,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:16,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 20:53:16,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 20:53:16,520 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-22 20:53:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-22 20:53:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 20:53:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-22 20:53:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-22 20:53:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-22 20:53:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-22 20:53:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-11-22 20:53:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-11-22 20:53:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-22 20:53:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-22 20:53:16,523 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-22 20:53:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-22 20:53:16,523 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-22 20:53:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-22 20:53:16,524 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-22 20:53:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-22 20:53:16,525 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-22 20:53:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-22 20:53:16,525 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-22 20:53:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-22 20:53:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-22 20:53:16,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-22 20:53:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-22 20:53:16,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-22 20:53:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-22 20:53:16,528 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-22 20:53:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-22 20:53:16,528 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-22 20:53:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-22 20:53:16,528 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-22 20:53:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-22 20:53:16,528 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-22 20:53:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-22 20:53:16,529 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-22 20:53:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-22 20:53:16,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-22 20:53:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-22 20:53:16,529 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-22 20:53:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 20:53:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-22 20:53:16,530 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-22 20:53:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-22 20:53:16,530 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-22 20:53:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-22 20:53:16,530 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-22 20:53:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-22 20:53:16,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-22 20:53:16,531 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-11-22 20:53:16,531 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-11-22 20:53:16,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 20:53:16,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 20:53:16,531 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-22 20:53:16,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-22 20:53:16,700 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 20:53:16,703 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 20:53:17,733 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 20:53:17,803 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 20:53:17,803 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-22 20:53:17,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:53:17 BoogieIcfgContainer [2023-11-22 20:53:17,803 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 20:53:17,805 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 20:53:17,805 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 20:53:17,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 20:53:17,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:53:15" (1/3) ... [2023-11-22 20:53:17,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513e989b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:53:17, skipping insertion in model container [2023-11-22 20:53:17,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:16" (2/3) ... [2023-11-22 20:53:17,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513e989b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:53:17, skipping insertion in model container [2023-11-22 20:53:17,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:53:17" (3/3) ... [2023-11-22 20:53:17,812 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2023-11-22 20:53:17,828 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 20:53:17,828 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 20:53:17,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 20:53:17,915 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@630335e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 20:53:17,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 20:53:17,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 570 states, 443 states have (on average 1.72686230248307) internal successors, (765), 461 states have internal predecessors, (765), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-22 20:53:17,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-22 20:53:17,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:17,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:17,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:17,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:17,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1069495149, now seen corresponding path program 1 times [2023-11-22 20:53:17,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:17,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57920873] [2023-11-22 20:53:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:17,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 20:53:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 20:53:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 20:53:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 20:53:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 20:53:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 20:53:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-22 20:53:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 20:53:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 20:53:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 20:53:18,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:18,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57920873] [2023-11-22 20:53:18,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57920873] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:18,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210167093] [2023-11-22 20:53:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:18,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:18,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:18,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:18,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 20:53:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:19,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-22 20:53:19,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 20:53:19,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:19,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210167093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:19,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:19,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2023-11-22 20:53:19,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787002323] [2023-11-22 20:53:19,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:19,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 20:53:19,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:19,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 20:53:19,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 20:53:19,278 INFO L87 Difference]: Start difference. First operand has 570 states, 443 states have (on average 1.72686230248307) internal successors, (765), 461 states have internal predecessors, (765), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:19,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:19,415 INFO L93 Difference]: Finished difference Result 1124 states and 1919 transitions. [2023-11-22 20:53:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 20:53:19,418 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-11-22 20:53:19,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:19,435 INFO L225 Difference]: With dead ends: 1124 [2023-11-22 20:53:19,436 INFO L226 Difference]: Without dead ends: 564 [2023-11-22 20:53:19,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 20:53:19,450 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:19,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 937 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 20:53:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-11-22 20:53:19,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2023-11-22 20:53:19,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 440 states have (on average 1.7022727272727274) internal successors, (749), 456 states have internal predecessors, (749), 100 states have call successors, (100), 25 states have call predecessors, (100), 23 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-22 20:53:19,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 946 transitions. [2023-11-22 20:53:19,559 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 946 transitions. Word has length 103 [2023-11-22 20:53:19,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:19,560 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 946 transitions. [2023-11-22 20:53:19,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:19,561 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 946 transitions. [2023-11-22 20:53:19,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-22 20:53:19,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:19,571 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:19,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 20:53:19,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-22 20:53:19,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:19,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:19,791 INFO L85 PathProgramCache]: Analyzing trace with hash -428494387, now seen corresponding path program 1 times [2023-11-22 20:53:19,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:19,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542190442] [2023-11-22 20:53:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:19,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 20:53:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 20:53:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 20:53:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 20:53:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 20:53:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 20:53:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-22 20:53:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 20:53:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 20:53:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,295 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 20:53:20,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:20,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542190442] [2023-11-22 20:53:20,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542190442] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:20,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972635469] [2023-11-22 20:53:20,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:20,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:20,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:20,298 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:20,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 20:53:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 20:53:20,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 20:53:20,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:20,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972635469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:20,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:20,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-22 20:53:20,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463990390] [2023-11-22 20:53:20,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:20,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 20:53:20,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:20,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 20:53:20,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-22 20:53:20,620 INFO L87 Difference]: Start difference. First operand 564 states and 946 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:20,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:20,770 INFO L93 Difference]: Finished difference Result 1657 states and 2819 transitions. [2023-11-22 20:53:20,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 20:53:20,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-11-22 20:53:20,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:20,781 INFO L225 Difference]: With dead ends: 1657 [2023-11-22 20:53:20,781 INFO L226 Difference]: Without dead ends: 1108 [2023-11-22 20:53:20,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-22 20:53:20,787 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 941 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:20,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1892 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:20,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2023-11-22 20:53:20,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1099. [2023-11-22 20:53:20,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 865 states have (on average 1.7098265895953757) internal successors, (1479), 894 states have internal predecessors, (1479), 188 states have call successors, (188), 47 states have call predecessors, (188), 45 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-11-22 20:53:20,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1863 transitions. [2023-11-22 20:53:20,872 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1863 transitions. Word has length 103 [2023-11-22 20:53:20,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:20,875 INFO L495 AbstractCegarLoop]: Abstraction has 1099 states and 1863 transitions. [2023-11-22 20:53:20,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:20,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1863 transitions. [2023-11-22 20:53:20,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-22 20:53:20,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:20,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:20,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:21,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-22 20:53:21,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:21,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:21,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1130094261, now seen corresponding path program 1 times [2023-11-22 20:53:21,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:21,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710330651] [2023-11-22 20:53:21,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:21,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 20:53:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 20:53:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 20:53:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 20:53:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 20:53:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 20:53:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-22 20:53:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 20:53:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 20:53:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,504 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 20:53:21,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:21,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710330651] [2023-11-22 20:53:21,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710330651] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:21,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008687869] [2023-11-22 20:53:21,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:21,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:21,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:21,507 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:21,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 20:53:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 20:53:21,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 20:53:21,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:21,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008687869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:21,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:21,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 20:53:21,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589445908] [2023-11-22 20:53:21,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:21,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:53:21,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:21,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:53:21,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 20:53:21,817 INFO L87 Difference]: Start difference. First operand 1099 states and 1863 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:21,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:21,943 INFO L93 Difference]: Finished difference Result 2204 states and 3739 transitions. [2023-11-22 20:53:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:53:21,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-11-22 20:53:21,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:21,950 INFO L225 Difference]: With dead ends: 2204 [2023-11-22 20:53:21,950 INFO L226 Difference]: Without dead ends: 1108 [2023-11-22 20:53:21,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 20:53:21,957 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 26 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:21,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2739 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:21,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2023-11-22 20:53:21,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1108. [2023-11-22 20:53:21,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 873 states have (on average 1.7101947308132874) internal successors, (1493), 902 states have internal predecessors, (1493), 188 states have call successors, (188), 48 states have call predecessors, (188), 46 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-11-22 20:53:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1877 transitions. [2023-11-22 20:53:21,997 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1877 transitions. Word has length 103 [2023-11-22 20:53:21,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:21,997 INFO L495 AbstractCegarLoop]: Abstraction has 1108 states and 1877 transitions. [2023-11-22 20:53:21,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1877 transitions. [2023-11-22 20:53:22,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-22 20:53:22,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:22,002 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:22,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:22,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:22,216 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:22,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:22,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1006973529, now seen corresponding path program 1 times [2023-11-22 20:53:22,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:22,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498805890] [2023-11-22 20:53:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:22,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 20:53:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-22 20:53:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-22 20:53:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 20:53:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-22 20:53:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-22 20:53:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 20:53:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 20:53:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 20:53:22,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:22,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498805890] [2023-11-22 20:53:22,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498805890] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:22,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943895998] [2023-11-22 20:53:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:22,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:22,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:22,684 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:22,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 20:53:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 20:53:22,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 20:53:22,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:22,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943895998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:22,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:22,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-11-22 20:53:22,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6841700] [2023-11-22 20:53:22,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:22,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:53:22,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:22,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:53:22,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-22 20:53:22,978 INFO L87 Difference]: Start difference. First operand 1108 states and 1877 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:23,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:23,241 INFO L93 Difference]: Finished difference Result 2255 states and 3833 transitions. [2023-11-22 20:53:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:53:23,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2023-11-22 20:53:23,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:23,248 INFO L225 Difference]: With dead ends: 2255 [2023-11-22 20:53:23,249 INFO L226 Difference]: Without dead ends: 1152 [2023-11-22 20:53:23,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-22 20:53:23,255 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 168 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:23,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2585 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 20:53:23,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2023-11-22 20:53:23,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1152. [2023-11-22 20:53:23,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 916 states have (on average 1.720524017467249) internal successors, (1576), 945 states have internal predecessors, (1576), 188 states have call successors, (188), 49 states have call predecessors, (188), 47 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-11-22 20:53:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1960 transitions. [2023-11-22 20:53:23,302 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1960 transitions. Word has length 105 [2023-11-22 20:53:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:23,302 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1960 transitions. [2023-11-22 20:53:23,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1960 transitions. [2023-11-22 20:53:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-22 20:53:23,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:23,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:23,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:23,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:23,525 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:23,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:23,525 INFO L85 PathProgramCache]: Analyzing trace with hash -813048253, now seen corresponding path program 1 times [2023-11-22 20:53:23,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:23,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301738242] [2023-11-22 20:53:23,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:23,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 20:53:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 20:53:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 20:53:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-22 20:53:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 20:53:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 20:53:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-22 20:53:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 20:53:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 20:53:23,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:23,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301738242] [2023-11-22 20:53:23,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301738242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:23,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76557948] [2023-11-22 20:53:23,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:23,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:23,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:23,961 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:23,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 20:53:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:24,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 20:53:24,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:24,313 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 20:53:24,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:24,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76557948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:24,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:24,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-22 20:53:24,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148225318] [2023-11-22 20:53:24,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:24,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 20:53:24,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:24,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 20:53:24,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-22 20:53:24,317 INFO L87 Difference]: Start difference. First operand 1152 states and 1960 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:24,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:24,515 INFO L93 Difference]: Finished difference Result 2332 states and 3965 transitions. [2023-11-22 20:53:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:53:24,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 107 [2023-11-22 20:53:24,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:24,523 INFO L225 Difference]: With dead ends: 2332 [2023-11-22 20:53:24,523 INFO L226 Difference]: Without dead ends: 1185 [2023-11-22 20:53:24,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-22 20:53:24,531 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 113 mSDsluCounter, 4481 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5397 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:24,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5397 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:24,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2023-11-22 20:53:24,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1164. [2023-11-22 20:53:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 925 states have (on average 1.718918918918919) internal successors, (1590), 956 states have internal predecessors, (1590), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2023-11-22 20:53:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1980 transitions. [2023-11-22 20:53:24,573 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1980 transitions. Word has length 107 [2023-11-22 20:53:24,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:24,574 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 1980 transitions. [2023-11-22 20:53:24,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:24,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1980 transitions. [2023-11-22 20:53:24,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-22 20:53:24,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:24,578 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:24,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:24,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:24,796 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:24,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:24,796 INFO L85 PathProgramCache]: Analyzing trace with hash -160611478, now seen corresponding path program 1 times [2023-11-22 20:53:24,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:24,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028610152] [2023-11-22 20:53:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:24,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:24,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 20:53:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 20:53:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 20:53:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 20:53:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 20:53:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 20:53:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 20:53:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 20:53:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 20:53:25,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:25,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028610152] [2023-11-22 20:53:25,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028610152] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:25,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306816306] [2023-11-22 20:53:25,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:25,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:25,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:25,178 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:25,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 20:53:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 20:53:25,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 20:53:25,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:25,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306816306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:25,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:25,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-22 20:53:25,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025558712] [2023-11-22 20:53:25,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:25,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 20:53:25,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:25,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 20:53:25,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-22 20:53:25,494 INFO L87 Difference]: Start difference. First operand 1164 states and 1980 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:25,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:25,669 INFO L93 Difference]: Finished difference Result 2350 states and 3994 transitions. [2023-11-22 20:53:25,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:53:25,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 108 [2023-11-22 20:53:25,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:25,676 INFO L225 Difference]: With dead ends: 2350 [2023-11-22 20:53:25,677 INFO L226 Difference]: Without dead ends: 1193 [2023-11-22 20:53:25,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-22 20:53:25,684 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 124 mSDsluCounter, 4474 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5391 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:25,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5391 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:25,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2023-11-22 20:53:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1164. [2023-11-22 20:53:25,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 925 states have (on average 1.718918918918919) internal successors, (1590), 956 states have internal predecessors, (1590), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2023-11-22 20:53:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1980 transitions. [2023-11-22 20:53:25,724 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1980 transitions. Word has length 108 [2023-11-22 20:53:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:25,724 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 1980 transitions. [2023-11-22 20:53:25,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1980 transitions. [2023-11-22 20:53:25,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-22 20:53:25,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:25,729 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:25,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:25,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:25,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:25,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:25,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1218816576, now seen corresponding path program 1 times [2023-11-22 20:53:25,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:25,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794120718] [2023-11-22 20:53:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:25,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 20:53:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 20:53:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 20:53:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 20:53:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 20:53:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 20:53:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 20:53:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 20:53:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 20:53:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,242 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 20:53:26,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:26,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794120718] [2023-11-22 20:53:26,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794120718] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:26,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82808871] [2023-11-22 20:53:26,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:26,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:26,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:26,244 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:26,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 20:53:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 20:53:26,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 20:53:26,517 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:26,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82808871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:26,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:26,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-22 20:53:26,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554328934] [2023-11-22 20:53:26,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:26,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:53:26,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:26,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:53:26,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 20:53:26,519 INFO L87 Difference]: Start difference. First operand 1164 states and 1980 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:26,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:26,632 INFO L93 Difference]: Finished difference Result 2338 states and 3974 transitions. [2023-11-22 20:53:26,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:53:26,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2023-11-22 20:53:26,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:26,639 INFO L225 Difference]: With dead ends: 2338 [2023-11-22 20:53:26,639 INFO L226 Difference]: Without dead ends: 1175 [2023-11-22 20:53:26,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-22 20:53:26,646 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 20 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:26,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2740 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:26,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2023-11-22 20:53:26,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1173. [2023-11-22 20:53:26,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7095391211146838) internal successors, (1595), 964 states have internal predecessors, (1595), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 20:53:26,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1984 transitions. [2023-11-22 20:53:26,682 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1984 transitions. Word has length 108 [2023-11-22 20:53:26,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:26,682 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1984 transitions. [2023-11-22 20:53:26,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:26,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1984 transitions. [2023-11-22 20:53:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-22 20:53:26,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:26,687 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:26,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:26,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:26,903 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:26,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:26,903 INFO L85 PathProgramCache]: Analyzing trace with hash -486685313, now seen corresponding path program 1 times [2023-11-22 20:53:26,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:26,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145810704] [2023-11-22 20:53:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:26,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 20:53:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 20:53:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 20:53:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 20:53:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-22 20:53:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 20:53:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 20:53:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 20:53:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,257 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 20:53:27,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:27,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145810704] [2023-11-22 20:53:27,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145810704] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:27,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669736921] [2023-11-22 20:53:27,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:27,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:27,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:27,259 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:27,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 20:53:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 20:53:27,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 20:53:27,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:27,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669736921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:27,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:27,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-22 20:53:27,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693793460] [2023-11-22 20:53:27,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:27,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 20:53:27,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 20:53:27,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-22 20:53:27,612 INFO L87 Difference]: Start difference. First operand 1173 states and 1984 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:27,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:27,779 INFO L93 Difference]: Finished difference Result 2359 states and 3989 transitions. [2023-11-22 20:53:27,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:53:27,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2023-11-22 20:53:27,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:27,787 INFO L225 Difference]: With dead ends: 2359 [2023-11-22 20:53:27,787 INFO L226 Difference]: Without dead ends: 1204 [2023-11-22 20:53:27,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-22 20:53:27,793 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 135 mSDsluCounter, 4462 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5379 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:27,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 5379 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:27,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2023-11-22 20:53:27,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1173. [2023-11-22 20:53:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7095391211146838) internal successors, (1595), 964 states have internal predecessors, (1595), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 20:53:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1984 transitions. [2023-11-22 20:53:27,830 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1984 transitions. Word has length 109 [2023-11-22 20:53:27,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:27,831 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1984 transitions. [2023-11-22 20:53:27,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1984 transitions. [2023-11-22 20:53:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-22 20:53:27,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:27,835 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:27,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:28,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-22 20:53:28,052 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:28,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1659098947, now seen corresponding path program 1 times [2023-11-22 20:53:28,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:28,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221314292] [2023-11-22 20:53:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:28,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 20:53:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 20:53:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 20:53:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 20:53:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-22 20:53:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 20:53:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 20:53:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 20:53:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 20:53:28,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:28,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221314292] [2023-11-22 20:53:28,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221314292] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:28,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112906475] [2023-11-22 20:53:28,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:28,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:28,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:28,433 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:28,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 20:53:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 20:53:28,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 20:53:28,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:28,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112906475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:28,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:28,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-22 20:53:28,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960914221] [2023-11-22 20:53:28,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:28,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:53:28,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:28,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:53:28,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-22 20:53:28,773 INFO L87 Difference]: Start difference. First operand 1173 states and 1984 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:28,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:28,999 INFO L93 Difference]: Finished difference Result 2361 states and 3992 transitions. [2023-11-22 20:53:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 20:53:29,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2023-11-22 20:53:29,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:29,007 INFO L225 Difference]: With dead ends: 2361 [2023-11-22 20:53:29,007 INFO L226 Difference]: Without dead ends: 1206 [2023-11-22 20:53:29,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-22 20:53:29,013 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 131 mSDsluCounter, 5349 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 6256 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:29,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 6256 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:29,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2023-11-22 20:53:29,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1173. [2023-11-22 20:53:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7095391211146838) internal successors, (1595), 964 states have internal predecessors, (1595), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 20:53:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1984 transitions. [2023-11-22 20:53:29,050 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1984 transitions. Word has length 109 [2023-11-22 20:53:29,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:29,050 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1984 transitions. [2023-11-22 20:53:29,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:29,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1984 transitions. [2023-11-22 20:53:29,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-22 20:53:29,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:29,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:29,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:29,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:29,272 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:29,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:29,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1513483238, now seen corresponding path program 1 times [2023-11-22 20:53:29,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:29,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703602345] [2023-11-22 20:53:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:29,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 20:53:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-22 20:53:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 20:53:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 20:53:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 20:53:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-22 20:53:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-22 20:53:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 20:53:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 20:53:29,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:29,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703602345] [2023-11-22 20:53:29,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703602345] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:29,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392939517] [2023-11-22 20:53:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:29,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:29,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:29,593 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:29,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 20:53:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 20:53:29,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:29,966 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 20:53:29,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:29,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392939517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:29,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:29,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-22 20:53:29,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454957868] [2023-11-22 20:53:29,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:29,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:53:29,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:29,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:53:29,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-22 20:53:29,969 INFO L87 Difference]: Start difference. First operand 1173 states and 1984 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:30,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:30,183 INFO L93 Difference]: Finished difference Result 2361 states and 3992 transitions. [2023-11-22 20:53:30,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 20:53:30,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2023-11-22 20:53:30,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:30,190 INFO L225 Difference]: With dead ends: 2361 [2023-11-22 20:53:30,191 INFO L226 Difference]: Without dead ends: 1206 [2023-11-22 20:53:30,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-22 20:53:30,197 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 141 mSDsluCounter, 5337 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6244 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:30,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6244 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:30,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2023-11-22 20:53:30,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1173. [2023-11-22 20:53:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7095391211146838) internal successors, (1595), 964 states have internal predecessors, (1595), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 20:53:30,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1984 transitions. [2023-11-22 20:53:30,255 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1984 transitions. Word has length 110 [2023-11-22 20:53:30,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:30,256 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1984 transitions. [2023-11-22 20:53:30,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:30,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1984 transitions. [2023-11-22 20:53:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-22 20:53:30,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:30,260 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:30,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:30,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-22 20:53:30,478 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:30,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:30,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1008032440, now seen corresponding path program 1 times [2023-11-22 20:53:30,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:30,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884813923] [2023-11-22 20:53:30,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:30,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 20:53:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 20:53:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 20:53:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-22 20:53:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-22 20:53:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 20:53:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 20:53:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 20:53:30,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:30,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884813923] [2023-11-22 20:53:30,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884813923] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:30,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972153170] [2023-11-22 20:53:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:30,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:30,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:30,795 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:30,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 20:53:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 20:53:31,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 20:53:31,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:31,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972153170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:31,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:31,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-22 20:53:31,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629468647] [2023-11-22 20:53:31,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:31,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:53:31,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:31,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:53:31,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-22 20:53:31,175 INFO L87 Difference]: Start difference. First operand 1173 states and 1984 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:31,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:31,392 INFO L93 Difference]: Finished difference Result 2353 states and 3978 transitions. [2023-11-22 20:53:31,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 20:53:31,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2023-11-22 20:53:31,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:31,400 INFO L225 Difference]: With dead ends: 2353 [2023-11-22 20:53:31,400 INFO L226 Difference]: Without dead ends: 1198 [2023-11-22 20:53:31,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-22 20:53:31,406 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 151 mSDsluCounter, 5325 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 6232 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:31,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 6232 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:31,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2023-11-22 20:53:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1173. [2023-11-22 20:53:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7095391211146838) internal successors, (1595), 964 states have internal predecessors, (1595), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 20:53:31,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1984 transitions. [2023-11-22 20:53:31,446 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1984 transitions. Word has length 111 [2023-11-22 20:53:31,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:31,446 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1984 transitions. [2023-11-22 20:53:31,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1984 transitions. [2023-11-22 20:53:31,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-22 20:53:31,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:31,450 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:31,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:31,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-22 20:53:31,667 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:31,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:31,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1766035226, now seen corresponding path program 1 times [2023-11-22 20:53:31,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:31,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69159927] [2023-11-22 20:53:31,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:31,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 20:53:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 20:53:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 20:53:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-22 20:53:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-22 20:53:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 20:53:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 20:53:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 20:53:31,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:31,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69159927] [2023-11-22 20:53:31,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69159927] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:31,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649394934] [2023-11-22 20:53:31,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:31,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:31,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:31,940 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:31,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 20:53:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 20:53:32,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-22 20:53:32,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:32,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649394934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:32,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:32,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 20:53:32,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551887158] [2023-11-22 20:53:32,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:32,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:53:32,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:32,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:53:32,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 20:53:32,259 INFO L87 Difference]: Start difference. First operand 1173 states and 1984 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:32,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:32,359 INFO L93 Difference]: Finished difference Result 2317 states and 3925 transitions. [2023-11-22 20:53:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:53:32,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2023-11-22 20:53:32,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:32,366 INFO L225 Difference]: With dead ends: 2317 [2023-11-22 20:53:32,367 INFO L226 Difference]: Without dead ends: 1173 [2023-11-22 20:53:32,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 20:53:32,373 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 35 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:32,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2738 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:32,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2023-11-22 20:53:32,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2023-11-22 20:53:32,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7041800643086817) internal successors, (1590), 964 states have internal predecessors, (1590), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 20:53:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1979 transitions. [2023-11-22 20:53:32,412 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1979 transitions. Word has length 111 [2023-11-22 20:53:32,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:32,412 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1979 transitions. [2023-11-22 20:53:32,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:32,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1979 transitions. [2023-11-22 20:53:32,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-22 20:53:32,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:32,435 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:32,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:32,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-22 20:53:32,652 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:32,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:32,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1736644033, now seen corresponding path program 1 times [2023-11-22 20:53:32,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:32,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914807522] [2023-11-22 20:53:32,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:32,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 20:53:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 20:53:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 20:53:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 20:53:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 20:53:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 20:53:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 20:53:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 20:53:32,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:32,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914807522] [2023-11-22 20:53:32,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914807522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:32,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390061219] [2023-11-22 20:53:32,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:32,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:32,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:32,960 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:32,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 20:53:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 20:53:33,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 20:53:33,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:33,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390061219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:33,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:33,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-11-22 20:53:33,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748997752] [2023-11-22 20:53:33,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:33,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:53:33,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:53:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-22 20:53:33,256 INFO L87 Difference]: Start difference. First operand 1173 states and 1979 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:33,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:33,460 INFO L93 Difference]: Finished difference Result 2313 states and 3916 transitions. [2023-11-22 20:53:33,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:53:33,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2023-11-22 20:53:33,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:33,467 INFO L225 Difference]: With dead ends: 2313 [2023-11-22 20:53:33,467 INFO L226 Difference]: Without dead ends: 1225 [2023-11-22 20:53:33,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-22 20:53:33,473 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 239 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:33,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2574 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:33,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-11-22 20:53:33,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1217. [2023-11-22 20:53:33,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 976 states have (on average 1.714139344262295) internal successors, (1673), 1007 states have internal predecessors, (1673), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-11-22 20:53:33,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 2061 transitions. [2023-11-22 20:53:33,510 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 2061 transitions. Word has length 112 [2023-11-22 20:53:33,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:33,510 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 2061 transitions. [2023-11-22 20:53:33,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:33,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 2061 transitions. [2023-11-22 20:53:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-22 20:53:33,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:33,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:33,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:33,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-22 20:53:33,731 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:33,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:33,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2000035450, now seen corresponding path program 1 times [2023-11-22 20:53:33,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:33,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610203672] [2023-11-22 20:53:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:33,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 20:53:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 20:53:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 20:53:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-22 20:53:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 20:53:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 20:53:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 20:53:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 20:53:34,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:34,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610203672] [2023-11-22 20:53:34,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610203672] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:34,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271564625] [2023-11-22 20:53:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:34,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:34,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:34,092 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:34,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-22 20:53:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 20:53:34,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:34,433 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 20:53:34,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:34,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271564625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:34,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:34,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2023-11-22 20:53:34,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931381851] [2023-11-22 20:53:34,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:34,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 20:53:34,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:34,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 20:53:34,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2023-11-22 20:53:34,435 INFO L87 Difference]: Start difference. First operand 1217 states and 2061 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:34,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:34,601 INFO L93 Difference]: Finished difference Result 2347 states and 3965 transitions. [2023-11-22 20:53:34,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:53:34,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2023-11-22 20:53:34,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:34,609 INFO L225 Difference]: With dead ends: 2347 [2023-11-22 20:53:34,609 INFO L226 Difference]: Without dead ends: 1259 [2023-11-22 20:53:34,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-22 20:53:34,615 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 113 mSDsluCounter, 4487 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5404 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:34,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5404 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:34,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2023-11-22 20:53:34,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1229. [2023-11-22 20:53:34,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 985 states have (on average 1.7126903553299493) internal successors, (1687), 1018 states have internal predecessors, (1687), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-22 20:53:34,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2079 transitions. [2023-11-22 20:53:34,655 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2079 transitions. Word has length 113 [2023-11-22 20:53:34,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:34,655 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2079 transitions. [2023-11-22 20:53:34,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:34,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2079 transitions. [2023-11-22 20:53:34,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-22 20:53:34,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:34,660 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:34,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:34,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:34,876 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:34,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:34,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1050717819, now seen corresponding path program 1 times [2023-11-22 20:53:34,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:34,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957085908] [2023-11-22 20:53:34,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:34,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 20:53:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 20:53:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 20:53:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 20:53:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 20:53:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 20:53:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 20:53:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-22 20:53:35,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:35,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957085908] [2023-11-22 20:53:35,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957085908] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:35,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590735241] [2023-11-22 20:53:35,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:35,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:35,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:35,197 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:35,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-22 20:53:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 20:53:35,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:35,531 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 20:53:35,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:35,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590735241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:35,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:35,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-22 20:53:35,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716791678] [2023-11-22 20:53:35,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:35,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 20:53:35,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:35,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 20:53:35,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-22 20:53:35,534 INFO L87 Difference]: Start difference. First operand 1229 states and 2079 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:35,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:35,731 INFO L93 Difference]: Finished difference Result 2355 states and 3978 transitions. [2023-11-22 20:53:35,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:53:35,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2023-11-22 20:53:35,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:35,752 INFO L225 Difference]: With dead ends: 2355 [2023-11-22 20:53:35,753 INFO L226 Difference]: Without dead ends: 1267 [2023-11-22 20:53:35,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-11-22 20:53:35,760 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 124 mSDsluCounter, 4475 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5392 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:35,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5392 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2023-11-22 20:53:35,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1229. [2023-11-22 20:53:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 985 states have (on average 1.7126903553299493) internal successors, (1687), 1018 states have internal predecessors, (1687), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-22 20:53:35,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2079 transitions. [2023-11-22 20:53:35,804 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2079 transitions. Word has length 114 [2023-11-22 20:53:35,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:35,805 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2079 transitions. [2023-11-22 20:53:35,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:35,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2079 transitions. [2023-11-22 20:53:35,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-22 20:53:35,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:35,810 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:35,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:36,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-22 20:53:36,031 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:36,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:36,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1948668411, now seen corresponding path program 1 times [2023-11-22 20:53:36,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:36,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213409610] [2023-11-22 20:53:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:36,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 20:53:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 20:53:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 20:53:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 20:53:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 20:53:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 20:53:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 20:53:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-22 20:53:36,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:36,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213409610] [2023-11-22 20:53:36,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213409610] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:36,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92937998] [2023-11-22 20:53:36,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:36,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:36,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:36,348 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:36,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-22 20:53:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 20:53:36,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 20:53:36,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:36,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92937998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:36,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:36,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-22 20:53:36,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495742264] [2023-11-22 20:53:36,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:36,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:53:36,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:36,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:53:36,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-22 20:53:36,684 INFO L87 Difference]: Start difference. First operand 1229 states and 2079 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:36,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:36,914 INFO L93 Difference]: Finished difference Result 2357 states and 3980 transitions. [2023-11-22 20:53:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 20:53:36,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2023-11-22 20:53:36,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:36,921 INFO L225 Difference]: With dead ends: 2357 [2023-11-22 20:53:36,921 INFO L226 Difference]: Without dead ends: 1269 [2023-11-22 20:53:36,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-11-22 20:53:36,925 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 132 mSDsluCounter, 5350 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6257 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:36,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6257 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 20:53:36,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2023-11-22 20:53:36,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1229. [2023-11-22 20:53:36,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 985 states have (on average 1.7126903553299493) internal successors, (1687), 1018 states have internal predecessors, (1687), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-22 20:53:36,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2079 transitions. [2023-11-22 20:53:36,961 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2079 transitions. Word has length 114 [2023-11-22 20:53:36,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:36,961 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2079 transitions. [2023-11-22 20:53:36,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:36,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2079 transitions. [2023-11-22 20:53:36,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-22 20:53:36,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:36,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:36,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:37,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-22 20:53:37,187 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:37,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:37,187 INFO L85 PathProgramCache]: Analyzing trace with hash -578634277, now seen corresponding path program 1 times [2023-11-22 20:53:37,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:37,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540989931] [2023-11-22 20:53:37,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:37,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 20:53:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 20:53:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 20:53:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 20:53:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 20:53:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 20:53:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 20:53:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 20:53:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,469 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 20:53:37,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:37,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540989931] [2023-11-22 20:53:37,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540989931] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:37,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700954368] [2023-11-22 20:53:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:37,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:37,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:37,471 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:37,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-22 20:53:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 20:53:37,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:37,735 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-22 20:53:37,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:37,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700954368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:37,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:37,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 20:53:37,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065210233] [2023-11-22 20:53:37,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:37,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:53:37,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:37,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:53:37,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-22 20:53:37,737 INFO L87 Difference]: Start difference. First operand 1229 states and 2079 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:37,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:37,829 INFO L93 Difference]: Finished difference Result 2389 states and 4044 transitions. [2023-11-22 20:53:37,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 20:53:37,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2023-11-22 20:53:37,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:37,836 INFO L225 Difference]: With dead ends: 2389 [2023-11-22 20:53:37,836 INFO L226 Difference]: Without dead ends: 1229 [2023-11-22 20:53:37,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-22 20:53:37,840 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 10 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:37,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2740 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:37,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2023-11-22 20:53:37,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2023-11-22 20:53:37,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 985 states have (on average 1.7096446700507615) internal successors, (1684), 1018 states have internal predecessors, (1684), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-22 20:53:37,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2076 transitions. [2023-11-22 20:53:37,875 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2076 transitions. Word has length 114 [2023-11-22 20:53:37,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:37,876 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2076 transitions. [2023-11-22 20:53:37,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:37,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2076 transitions. [2023-11-22 20:53:37,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-22 20:53:37,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:37,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:37,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:38,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-22 20:53:38,098 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:38,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1436783228, now seen corresponding path program 1 times [2023-11-22 20:53:38,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:38,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201096228] [2023-11-22 20:53:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:38,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:38,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:38,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:38,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:38,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:38,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:38,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 20:53:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:38,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 20:53:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:38,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 20:53:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:38,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-22 20:53:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:38,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 20:53:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:38,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-22 20:53:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:38,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-22 20:53:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-22 20:53:38,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:38,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201096228] [2023-11-22 20:53:38,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201096228] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:38,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953830355] [2023-11-22 20:53:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:38,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:38,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:38,405 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:38,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-22 20:53:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:38,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 20:53:38,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 20:53:38,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:38,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953830355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:38,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:38,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-22 20:53:38,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594772489] [2023-11-22 20:53:38,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:38,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:53:38,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:38,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:53:38,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-22 20:53:38,741 INFO L87 Difference]: Start difference. First operand 1229 states and 2076 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:38,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:38,956 INFO L93 Difference]: Finished difference Result 2349 states and 3964 transitions. [2023-11-22 20:53:38,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 20:53:38,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2023-11-22 20:53:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:38,963 INFO L225 Difference]: With dead ends: 2349 [2023-11-22 20:53:38,963 INFO L226 Difference]: Without dead ends: 1261 [2023-11-22 20:53:38,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-11-22 20:53:38,968 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 142 mSDsluCounter, 5317 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 6220 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:38,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 6220 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:38,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2023-11-22 20:53:39,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1229. [2023-11-22 20:53:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 985 states have (on average 1.7096446700507615) internal successors, (1684), 1018 states have internal predecessors, (1684), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-22 20:53:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2076 transitions. [2023-11-22 20:53:39,028 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2076 transitions. Word has length 115 [2023-11-22 20:53:39,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:39,029 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2076 transitions. [2023-11-22 20:53:39,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:39,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2076 transitions. [2023-11-22 20:53:39,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-22 20:53:39,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:39,033 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:39,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:39,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-22 20:53:39,253 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:39,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:39,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1471037462, now seen corresponding path program 1 times [2023-11-22 20:53:39,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:39,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924942535] [2023-11-22 20:53:39,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:39,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 20:53:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-22 20:53:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-22 20:53:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 20:53:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-22 20:53:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 20:53:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 20:53:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,543 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-22 20:53:39,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:39,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924942535] [2023-11-22 20:53:39,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924942535] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:39,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906663789] [2023-11-22 20:53:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:39,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:39,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:39,548 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:39,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-22 20:53:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 20:53:39,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 20:53:39,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:39,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906663789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:39,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:39,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 11 [2023-11-22 20:53:39,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813161148] [2023-11-22 20:53:39,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:39,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:53:39,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:39,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:53:39,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-22 20:53:39,831 INFO L87 Difference]: Start difference. First operand 1229 states and 2076 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:39,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:39,923 INFO L93 Difference]: Finished difference Result 2440 states and 4133 transitions. [2023-11-22 20:53:39,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:53:39,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2023-11-22 20:53:39,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:39,930 INFO L225 Difference]: With dead ends: 2440 [2023-11-22 20:53:39,931 INFO L226 Difference]: Without dead ends: 1195 [2023-11-22 20:53:39,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-22 20:53:39,936 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 13 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:39,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2739 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 20:53:39,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2023-11-22 20:53:39,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1195. [2023-11-22 20:53:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 954 states have (on average 1.6960167714884695) internal successors, (1618), 985 states have internal predecessors, (1618), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-11-22 20:53:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2006 transitions. [2023-11-22 20:53:39,972 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2006 transitions. Word has length 116 [2023-11-22 20:53:39,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:39,972 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 2006 transitions. [2023-11-22 20:53:39,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:39,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2006 transitions. [2023-11-22 20:53:39,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-22 20:53:39,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:39,976 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:39,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:40,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:40,193 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:40,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:40,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1695159395, now seen corresponding path program 1 times [2023-11-22 20:53:40,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:40,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432336011] [2023-11-22 20:53:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:40,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 20:53:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 20:53:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 20:53:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 20:53:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 20:53:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 20:53:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 20:53:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-22 20:53:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 20:53:40,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:40,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432336011] [2023-11-22 20:53:40,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432336011] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:40,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776034035] [2023-11-22 20:53:40,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:40,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:40,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:40,511 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:40,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-22 20:53:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-22 20:53:40,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 20:53:40,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:40,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776034035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:40,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:40,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2023-11-22 20:53:40,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939482453] [2023-11-22 20:53:40,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:40,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 20:53:40,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:40,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 20:53:40,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-22 20:53:40,791 INFO L87 Difference]: Start difference. First operand 1195 states and 2006 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:40,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:40,946 INFO L93 Difference]: Finished difference Result 2396 states and 4020 transitions. [2023-11-22 20:53:40,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:53:40,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2023-11-22 20:53:40,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:40,954 INFO L225 Difference]: With dead ends: 2396 [2023-11-22 20:53:40,954 INFO L226 Difference]: Without dead ends: 1214 [2023-11-22 20:53:40,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-22 20:53:40,960 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 134 mSDsluCounter, 4466 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5390 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:40,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5390 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:40,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2023-11-22 20:53:41,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1188. [2023-11-22 20:53:41,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 947 states have (on average 1.6916578669482576) internal successors, (1602), 978 states have internal predecessors, (1602), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-11-22 20:53:41,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1990 transitions. [2023-11-22 20:53:41,011 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1990 transitions. Word has length 117 [2023-11-22 20:53:41,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:41,011 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1990 transitions. [2023-11-22 20:53:41,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:41,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1990 transitions. [2023-11-22 20:53:41,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-22 20:53:41,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:41,016 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:41,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:41,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:41,233 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:41,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:41,234 INFO L85 PathProgramCache]: Analyzing trace with hash 26278668, now seen corresponding path program 1 times [2023-11-22 20:53:41,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:41,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697079188] [2023-11-22 20:53:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:41,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 20:53:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 20:53:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 20:53:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 20:53:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 20:53:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 20:53:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 20:53:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 20:53:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 20:53:41,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:41,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697079188] [2023-11-22 20:53:41,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697079188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:41,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:53:41,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 20:53:41,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674525773] [2023-11-22 20:53:41,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:41,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 20:53:41,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:41,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 20:53:41,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-22 20:53:41,541 INFO L87 Difference]: Start difference. First operand 1188 states and 1990 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:46,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:46,834 INFO L93 Difference]: Finished difference Result 2775 states and 4687 transitions. [2023-11-22 20:53:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 20:53:46,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 118 [2023-11-22 20:53:46,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:46,854 INFO L225 Difference]: With dead ends: 2775 [2023-11-22 20:53:46,855 INFO L226 Difference]: Without dead ends: 1683 [2023-11-22 20:53:46,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-11-22 20:53:46,860 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1520 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 5050 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 5465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 5050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:46,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 2469 Invalid, 5465 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [415 Valid, 5050 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-22 20:53:46,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2023-11-22 20:53:47,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1248. [2023-11-22 20:53:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 993 states have (on average 1.6827794561933536) internal successors, (1671), 1024 states have internal predecessors, (1671), 201 states have call successors, (201), 51 states have call predecessors, (201), 53 states have return successors, (220), 196 states have call predecessors, (220), 197 states have call successors, (220) [2023-11-22 20:53:47,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 2092 transitions. [2023-11-22 20:53:47,043 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 2092 transitions. Word has length 118 [2023-11-22 20:53:47,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:47,043 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 2092 transitions. [2023-11-22 20:53:47,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 20:53:47,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 2092 transitions. [2023-11-22 20:53:47,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-22 20:53:47,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:47,047 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:47,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-22 20:53:47,047 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:47,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:47,048 INFO L85 PathProgramCache]: Analyzing trace with hash 123181112, now seen corresponding path program 1 times [2023-11-22 20:53:47,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:47,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487598854] [2023-11-22 20:53:47,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:47,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:47,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:47,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 20:53:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:47,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:47,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 20:53:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:47,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 20:53:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:47,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 20:53:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:47,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 20:53:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:47,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:47,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 20:53:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:47,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 20:53:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:47,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 20:53:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:47,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 20:53:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:47,280 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 20:53:47,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:47,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487598854] [2023-11-22 20:53:47,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487598854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:47,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:53:47,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 20:53:47,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996409801] [2023-11-22 20:53:47,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:47,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 20:53:47,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:47,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 20:53:47,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 20:53:47,282 INFO L87 Difference]: Start difference. First operand 1248 states and 2092 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:50,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:50,865 INFO L93 Difference]: Finished difference Result 2858 states and 4823 transitions. [2023-11-22 20:53:50,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 20:53:50,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-11-22 20:53:50,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:50,876 INFO L225 Difference]: With dead ends: 2858 [2023-11-22 20:53:50,877 INFO L226 Difference]: Without dead ends: 1615 [2023-11-22 20:53:50,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-22 20:53:50,884 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1466 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 2624 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 2624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:50,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1235 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 2624 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-22 20:53:50,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2023-11-22 20:53:51,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1221. [2023-11-22 20:53:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 969 states have (on average 1.6780185758513932) internal successors, (1626), 998 states have internal predecessors, (1626), 200 states have call successors, (200), 51 states have call predecessors, (200), 51 states have return successors, (217), 195 states have call predecessors, (217), 196 states have call successors, (217) [2023-11-22 20:53:51,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 2043 transitions. [2023-11-22 20:53:51,103 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 2043 transitions. Word has length 118 [2023-11-22 20:53:51,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:51,104 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 2043 transitions. [2023-11-22 20:53:51,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 20:53:51,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 2043 transitions. [2023-11-22 20:53:51,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-22 20:53:51,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:51,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:51,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-22 20:53:51,108 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:51,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:51,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1357290559, now seen corresponding path program 1 times [2023-11-22 20:53:51,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:51,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573159310] [2023-11-22 20:53:51,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:51,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:51,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:51,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:51,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 20:53:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:51,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:51,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:51,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 20:53:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:51,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 20:53:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:51,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 20:53:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:51,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:51,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 20:53:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:51,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-22 20:53:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:51,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 20:53:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:51,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-22 20:53:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 20:53:51,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:51,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573159310] [2023-11-22 20:53:51,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573159310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:51,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:53:51,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 20:53:51,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923221809] [2023-11-22 20:53:51,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:51,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 20:53:51,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:51,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 20:53:51,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 20:53:51,392 INFO L87 Difference]: Start difference. First operand 1221 states and 2043 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 20:53:57,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:57,619 INFO L93 Difference]: Finished difference Result 4130 states and 7210 transitions. [2023-11-22 20:53:57,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 20:53:57,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 119 [2023-11-22 20:53:57,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:57,635 INFO L225 Difference]: With dead ends: 4130 [2023-11-22 20:53:57,635 INFO L226 Difference]: Without dead ends: 2990 [2023-11-22 20:53:57,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-22 20:53:57,643 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 4335 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 3959 mSolverCounterSat, 1332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4345 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 5291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1332 IncrementalHoareTripleChecker+Valid, 3959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:57,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4345 Valid, 1434 Invalid, 5291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1332 Valid, 3959 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-22 20:53:57,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2023-11-22 20:53:58,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 2316. [2023-11-22 20:53:58,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 1835 states have (on average 1.673024523160763) internal successors, (3070), 1891 states have internal predecessors, (3070), 383 states have call successors, (383), 96 states have call predecessors, (383), 97 states have return successors, (443), 376 states have call predecessors, (443), 377 states have call successors, (443) [2023-11-22 20:53:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 3896 transitions. [2023-11-22 20:53:58,030 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 3896 transitions. Word has length 119 [2023-11-22 20:53:58,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:58,031 INFO L495 AbstractCegarLoop]: Abstraction has 2316 states and 3896 transitions. [2023-11-22 20:53:58,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 20:53:58,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 3896 transitions. [2023-11-22 20:53:58,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-22 20:53:58,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:58,034 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:58,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-22 20:53:58,035 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:58,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:58,035 INFO L85 PathProgramCache]: Analyzing trace with hash -701163758, now seen corresponding path program 1 times [2023-11-22 20:53:58,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:58,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784440118] [2023-11-22 20:53:58,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:58,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:58,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:58,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:58,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 20:53:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:58,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:58,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:58,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 20:53:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:58,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 20:53:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:58,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 20:53:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:58,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-22 20:53:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:58,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-22 20:53:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 20:53:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:58,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 20:53:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:58,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 20:53:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 20:53:58,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:58,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784440118] [2023-11-22 20:53:58,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784440118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:58,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:53:58,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 20:53:58,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476849117] [2023-11-22 20:53:58,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:58,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 20:53:58,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:58,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 20:53:58,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 20:53:58,286 INFO L87 Difference]: Start difference. First operand 2316 states and 3896 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 20:54:04,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:54:04,774 INFO L93 Difference]: Finished difference Result 7993 states and 14212 transitions. [2023-11-22 20:54:04,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 20:54:04,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 120 [2023-11-22 20:54:04,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:54:04,802 INFO L225 Difference]: With dead ends: 7993 [2023-11-22 20:54:04,802 INFO L226 Difference]: Without dead ends: 5758 [2023-11-22 20:54:04,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-22 20:54:04,816 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 4339 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 4007 mSolverCounterSat, 1296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4350 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 5303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1296 IncrementalHoareTripleChecker+Valid, 4007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:54:04,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4350 Valid, 1513 Invalid, 5303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1296 Valid, 4007 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-22 20:54:04,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5758 states. [2023-11-22 20:54:05,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5758 to 4516. [2023-11-22 20:54:05,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4516 states, 3575 states have (on average 1.666013986013986) internal successors, (5956), 3685 states have internal predecessors, (5956), 751 states have call successors, (751), 186 states have call predecessors, (751), 189 states have return successors, (944), 740 states have call predecessors, (944), 741 states have call successors, (944) [2023-11-22 20:54:05,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 7651 transitions. [2023-11-22 20:54:05,553 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 7651 transitions. Word has length 120 [2023-11-22 20:54:05,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:54:05,554 INFO L495 AbstractCegarLoop]: Abstraction has 4516 states and 7651 transitions. [2023-11-22 20:54:05,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 20:54:05,554 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 7651 transitions. [2023-11-22 20:54:05,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-22 20:54:05,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:54:05,558 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:54:05,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-22 20:54:05,558 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:54:05,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:54:05,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1874866202, now seen corresponding path program 1 times [2023-11-22 20:54:05,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:54:05,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769061147] [2023-11-22 20:54:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:54:05,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:54:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:05,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:54:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:05,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:54:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:05,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 20:54:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:05,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:54:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:05,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:54:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:05,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 20:54:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:05,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 20:54:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:05,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 20:54:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:05,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 20:54:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:05,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-22 20:54:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:05,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 20:54:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:05,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 20:54:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:05,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 20:54:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 20:54:05,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:54:05,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769061147] [2023-11-22 20:54:05,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769061147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:54:05,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:54:05,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 20:54:05,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217617169] [2023-11-22 20:54:05,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:54:05,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 20:54:05,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:54:05,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 20:54:05,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 20:54:05,821 INFO L87 Difference]: Start difference. First operand 4516 states and 7651 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 20:54:13,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:54:13,490 INFO L93 Difference]: Finished difference Result 15763 states and 28913 transitions. [2023-11-22 20:54:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 20:54:13,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 121 [2023-11-22 20:54:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:54:13,544 INFO L225 Difference]: With dead ends: 15763 [2023-11-22 20:54:13,544 INFO L226 Difference]: Without dead ends: 11328 [2023-11-22 20:54:13,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-22 20:54:13,572 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 4374 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 4037 mSolverCounterSat, 1302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4386 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 5339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1302 IncrementalHoareTripleChecker+Valid, 4037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-22 20:54:13,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4386 Valid, 1549 Invalid, 5339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1302 Valid, 4037 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-22 20:54:13,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11328 states. [2023-11-22 20:54:15,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11328 to 8926. [2023-11-22 20:54:15,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8926 states, 7063 states have (on average 1.6579357213648591) internal successors, (11710), 7281 states have internal predecessors, (11710), 1489 states have call successors, (1489), 366 states have call predecessors, (1489), 373 states have return successors, (2091), 1470 states have call predecessors, (2091), 1471 states have call successors, (2091) [2023-11-22 20:54:15,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8926 states to 8926 states and 15290 transitions. [2023-11-22 20:54:15,099 INFO L78 Accepts]: Start accepts. Automaton has 8926 states and 15290 transitions. Word has length 121 [2023-11-22 20:54:15,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:54:15,100 INFO L495 AbstractCegarLoop]: Abstraction has 8926 states and 15290 transitions. [2023-11-22 20:54:15,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 20:54:15,100 INFO L276 IsEmpty]: Start isEmpty. Operand 8926 states and 15290 transitions. [2023-11-22 20:54:15,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-22 20:54:15,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:54:15,105 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:54:15,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-22 20:54:15,106 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:54:15,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:54:15,106 INFO L85 PathProgramCache]: Analyzing trace with hash 356266903, now seen corresponding path program 1 times [2023-11-22 20:54:15,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:54:15,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038456219] [2023-11-22 20:54:15,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:54:15,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:54:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:15,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:54:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:15,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:54:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:15,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 20:54:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:15,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:54:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:15,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:54:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 20:54:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:15,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 20:54:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:15,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 20:54:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:15,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 20:54:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:15,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 20:54:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:15,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 20:54:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:15,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 20:54:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:15,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 20:54:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 20:54:15,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:54:15,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038456219] [2023-11-22 20:54:15,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038456219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:54:15,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:54:15,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 20:54:15,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115175245] [2023-11-22 20:54:15,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:54:15,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 20:54:15,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:54:15,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 20:54:15,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 20:54:15,387 INFO L87 Difference]: Start difference. First operand 8926 states and 15290 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 20:54:24,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:54:24,825 INFO L93 Difference]: Finished difference Result 31347 states and 60460 transitions. [2023-11-22 20:54:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 20:54:24,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 122 [2023-11-22 20:54:24,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:54:24,945 INFO L225 Difference]: With dead ends: 31347 [2023-11-22 20:54:24,945 INFO L226 Difference]: Without dead ends: 22502 [2023-11-22 20:54:25,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-22 20:54:25,020 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 4390 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 4045 mSolverCounterSat, 1316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4403 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 5361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1316 IncrementalHoareTripleChecker+Valid, 4045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:54:25,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4403 Valid, 1618 Invalid, 5361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1316 Valid, 4045 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-22 20:54:25,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22502 states. [2023-11-22 20:54:27,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22502 to 17756. [2023-11-22 20:54:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17756 states, 14047 states have (on average 1.6493201395315726) internal successors, (23168), 14481 states have internal predecessors, (23168), 2967 states have call successors, (2967), 726 states have call predecessors, (2967), 741 states have return successors, (4834), 2932 states have call predecessors, (4834), 2933 states have call successors, (4834) [2023-11-22 20:54:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17756 states to 17756 states and 30969 transitions. [2023-11-22 20:54:28,185 INFO L78 Accepts]: Start accepts. Automaton has 17756 states and 30969 transitions. Word has length 122 [2023-11-22 20:54:28,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:54:28,185 INFO L495 AbstractCegarLoop]: Abstraction has 17756 states and 30969 transitions. [2023-11-22 20:54:28,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 20:54:28,186 INFO L276 IsEmpty]: Start isEmpty. Operand 17756 states and 30969 transitions. [2023-11-22 20:54:28,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-22 20:54:28,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:54:28,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:54:28,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-22 20:54:28,191 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:54:28,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:54:28,191 INFO L85 PathProgramCache]: Analyzing trace with hash 763119627, now seen corresponding path program 1 times [2023-11-22 20:54:28,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:54:28,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599992129] [2023-11-22 20:54:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:54:28,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:54:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:28,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:54:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:28,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:54:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:28,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 20:54:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:28,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:54:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:28,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:54:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:28,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 20:54:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:28,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 20:54:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:28,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 20:54:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:28,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:54:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:28,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 20:54:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:28,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 20:54:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:28,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 20:54:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:28,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 20:54:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 20:54:28,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:54:28,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599992129] [2023-11-22 20:54:28,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599992129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:54:28,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:54:28,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 20:54:28,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502195053] [2023-11-22 20:54:28,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:54:28,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 20:54:28,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:54:28,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 20:54:28,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 20:54:28,428 INFO L87 Difference]: Start difference. First operand 17756 states and 30969 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 20:54:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:54:42,611 INFO L93 Difference]: Finished difference Result 62559 states and 130475 transitions. [2023-11-22 20:54:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 20:54:42,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2023-11-22 20:54:42,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:54:42,902 INFO L225 Difference]: With dead ends: 62559 [2023-11-22 20:54:42,903 INFO L226 Difference]: Without dead ends: 44884 [2023-11-22 20:54:43,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-22 20:54:43,106 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 4439 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 4054 mSolverCounterSat, 1328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4453 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 5382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1328 IncrementalHoareTripleChecker+Valid, 4054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-22 20:54:43,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4453 Valid, 1630 Invalid, 5382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1328 Valid, 4054 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-22 20:54:43,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44884 states.