./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec1_product26.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 2b84cfef0f3fa5659093b8e6c2d8a82a1b18913f669c8d0a2efe9a0300cc4873 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 18:33:08,736 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 18:33:08,787 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 18:33:08,794 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 18:33:08,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 18:33:08,817 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 18:33:08,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 18:33:08,820 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 18:33:08,820 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 18:33:08,820 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 18:33:08,820 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 18:33:08,820 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 18:33:08,820 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 18:33:08,820 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 18:33:08,821 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 18:33:08,821 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 18:33:08,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 18:33:08,821 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 18:33:08,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 18:33:08,821 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 18:33:08,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 18:33:08,822 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 18:33:08,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 18:33:08,823 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 18:33:08,823 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 18:33:08,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 18:33:08,823 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 18:33:08,823 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 18:33:08,823 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 18:33:08,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 18:33:08,823 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 18:33:08,823 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 18:33:08,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:33:08,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 18:33:08,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 18:33:08,823 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 18:33:08,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 18:33:08,823 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 18:33:08,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 18:33:08,824 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 18:33:08,824 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 18:33:08,824 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 18:33:08,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 18:33:08,824 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 2b84cfef0f3fa5659093b8e6c2d8a82a1b18913f669c8d0a2efe9a0300cc4873 [2025-03-16 18:33:09,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 18:33:09,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 18:33:09,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 18:33:09,050 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 18:33:09,050 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 18:33:09,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c [2025-03-16 18:33:10,182 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c244e3316/0c292123ad594484a41094c081d84882/FLAG09a549757 [2025-03-16 18:33:10,574 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 18:33:10,575 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c [2025-03-16 18:33:10,593 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c244e3316/0c292123ad594484a41094c081d84882/FLAG09a549757 [2025-03-16 18:33:10,769 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c244e3316/0c292123ad594484a41094c081d84882 [2025-03-16 18:33:10,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 18:33:10,775 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 18:33:10,776 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 18:33:10,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 18:33:10,779 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 18:33:10,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:33:10" (1/1) ... [2025-03-16 18:33:10,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5efded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:10, skipping insertion in model container [2025-03-16 18:33:10,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:33:10" (1/1) ... [2025-03-16 18:33:10,818 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 18:33:11,190 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c[55974,55987] [2025-03-16 18:33:11,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:33:11,232 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 18:33:11,238 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2025-03-16 18:33:11,239 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [64] [2025-03-16 18:33:11,239 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1592] [2025-03-16 18:33:11,239 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1958] [2025-03-16 18:33:11,240 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1996] [2025-03-16 18:33:11,240 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2090] [2025-03-16 18:33:11,240 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [2208] [2025-03-16 18:33:11,240 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2390] [2025-03-16 18:33:11,241 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2740] [2025-03-16 18:33:11,241 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2749] [2025-03-16 18:33:11,303 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c[55974,55987] [2025-03-16 18:33:11,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:33:11,337 INFO L204 MainTranslator]: Completed translation [2025-03-16 18:33:11,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:11 WrapperNode [2025-03-16 18:33:11,339 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 18:33:11,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 18:33:11,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 18:33:11,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 18:33:11,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:11" (1/1) ... [2025-03-16 18:33:11,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:11" (1/1) ... [2025-03-16 18:33:11,405 INFO L138 Inliner]: procedures = 93, calls = 341, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 846 [2025-03-16 18:33:11,405 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 18:33:11,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 18:33:11,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 18:33:11,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 18:33:11,413 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:11" (1/1) ... [2025-03-16 18:33:11,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:11" (1/1) ... [2025-03-16 18:33:11,418 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:11" (1/1) ... [2025-03-16 18:33:11,442 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-16 18:33:11,442 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:11" (1/1) ... [2025-03-16 18:33:11,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:11" (1/1) ... [2025-03-16 18:33:11,457 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:11" (1/1) ... [2025-03-16 18:33:11,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:11" (1/1) ... [2025-03-16 18:33:11,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:11" (1/1) ... [2025-03-16 18:33:11,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:11" (1/1) ... [2025-03-16 18:33:11,467 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 18:33:11,469 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 18:33:11,469 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 18:33:11,469 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 18:33:11,469 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:11" (1/1) ... [2025-03-16 18:33:11,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:33:11,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:11,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 18:33:11,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 18:33:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-03-16 18:33:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-03-16 18:33:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 18:33:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-16 18:33:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-16 18:33:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-16 18:33:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-16 18:33:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-16 18:33:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-16 18:33:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-16 18:33:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-16 18:33:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-16 18:33:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-16 18:33:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-16 18:33:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-16 18:33:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-16 18:33:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-16 18:33:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-16 18:33:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-16 18:33:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-16 18:33:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-16 18:33:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2025-03-16 18:33:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-16 18:33:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-16 18:33:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-16 18:33:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 18:33:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-16 18:33:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-16 18:33:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-16 18:33:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 18:33:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 18:33:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-16 18:33:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-16 18:33:11,654 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 18:33:11,656 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 18:33:11,721 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2205: #res := ~retValue_acc~20; [2025-03-16 18:33:11,743 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2127: #res := ~retValue_acc~18; [2025-03-16 18:33:11,746 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L155: #res := ~retValue_acc~0; [2025-03-16 18:33:12,027 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L865: #res := ~retValue_acc~8; [2025-03-16 18:33:12,153 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L955-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~10#1; [2025-03-16 18:33:12,153 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L371-1: buttonForFloorIsPressed_#res#1 := buttonForFloorIsPressed_~retValue_acc~3#1; [2025-03-16 18:33:12,201 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L969: #res := ~retValue_acc~11; [2025-03-16 18:33:12,212 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2166: #res := ~retValue_acc~19; [2025-03-16 18:33:12,265 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L420-1: isEmpty_#res#1 := isEmpty_~retValue_acc~5#1; [2025-03-16 18:33:12,303 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L328-1: getCurrentFloorID_#res#1 := getCurrentFloorID_~retValue_acc~1#1; [2025-03-16 18:33:12,351 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L500-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~6#1; [2025-03-16 18:33:12,351 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L513-1: isIdle_#res#1 := isIdle_~retValue_acc~7#1; [2025-03-16 18:33:12,397 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3100: #res := ~retValue_acc~24; [2025-03-16 18:33:12,454 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1993-1: valid_product_#res#1 := valid_product_~retValue_acc~17#1; [2025-03-16 18:33:12,454 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2737-1: main_#res#1 := main_~retValue_acc~22#1; [2025-03-16 18:33:12,462 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2860: #res := ~retValue_acc~23; [2025-03-16 18:33:12,463 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L337: #res := ~retValue_acc~2; [2025-03-16 18:33:12,468 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3411: #res := ~retValue_acc~25; [2025-03-16 18:33:12,564 INFO L? ?]: Removed 440 outVars from TransFormulas that were not future-live. [2025-03-16 18:33:12,565 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 18:33:12,592 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 18:33:12,592 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 18:33:12,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:33:12 BoogieIcfgContainer [2025-03-16 18:33:12,592 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 18:33:12,594 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 18:33:12,594 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 18:33:12,598 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 18:33:12,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 06:33:10" (1/3) ... [2025-03-16 18:33:12,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb99521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:33:12, skipping insertion in model container [2025-03-16 18:33:12,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:11" (2/3) ... [2025-03-16 18:33:12,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb99521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:33:12, skipping insertion in model container [2025-03-16 18:33:12,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:33:12" (3/3) ... [2025-03-16 18:33:12,601 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product26.cil.c [2025-03-16 18:33:12,612 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 18:33:12,614 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product26.cil.c that has 24 procedures, 548 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 18:33:12,684 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 18:33:12,692 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5f8a13c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 18:33:12,692 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 18:33:12,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 548 states, 429 states have (on average 1.7156177156177157) internal successors, (736), 452 states have internal predecessors, (736), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-16 18:33:12,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-16 18:33:12,706 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:12,707 INFO L218 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] [2025-03-16 18:33:12,707 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:12,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:12,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1509868471, now seen corresponding path program 1 times [2025-03-16 18:33:12,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:12,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577625194] [2025-03-16 18:33:12,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:12,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:12,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-16 18:33:12,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-16 18:33:12,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:12,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:13,107 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:13,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:13,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577625194] [2025-03-16 18:33:13,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577625194] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:13,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053799065] [2025-03-16 18:33:13,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:13,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:13,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:13,112 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) [2025-03-16 18:33:13,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 18:33:13,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-16 18:33:13,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-16 18:33:13,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:13,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:13,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-16 18:33:13,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:33:13,488 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:13,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053799065] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:13,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:13,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2025-03-16 18:33:13,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512024850] [2025-03-16 18:33:13,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:13,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 18:33:13,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:13,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 18:33:13,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:33:13,511 INFO L87 Difference]: Start difference. First operand has 548 states, 429 states have (on average 1.7156177156177157) internal successors, (736), 452 states have internal predecessors, (736), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-16 18:33:13,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:13,563 INFO L93 Difference]: Finished difference Result 568 states and 953 transitions. [2025-03-16 18:33:13,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 18:33:13,564 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 74 [2025-03-16 18:33:13,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:13,575 INFO L225 Difference]: With dead ends: 568 [2025-03-16 18:33:13,575 INFO L226 Difference]: Without dead ends: 541 [2025-03-16 18:33:13,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:33:13,580 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:13,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:13,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2025-03-16 18:33:13,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2025-03-16 18:33:13,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 424 states have (on average 1.7146226415094339) internal successors, (727), 445 states have internal predecessors, (727), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2025-03-16 18:33:13,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 910 transitions. [2025-03-16 18:33:13,656 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 910 transitions. Word has length 74 [2025-03-16 18:33:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:13,657 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 910 transitions. [2025-03-16 18:33:13,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-16 18:33:13,657 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 910 transitions. [2025-03-16 18:33:13,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-16 18:33:13,663 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:13,663 INFO L218 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] [2025-03-16 18:33:13,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:13,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-16 18:33:13,864 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:13,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:13,865 INFO L85 PathProgramCache]: Analyzing trace with hash 847183466, now seen corresponding path program 1 times [2025-03-16 18:33:13,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:13,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779888698] [2025-03-16 18:33:13,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:13,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:13,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-16 18:33:13,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-16 18:33:13,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:13,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:14,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:14,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779888698] [2025-03-16 18:33:14,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779888698] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:14,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394860808] [2025-03-16 18:33:14,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:14,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:14,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:14,033 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) [2025-03-16 18:33:14,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 18:33:14,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-16 18:33:14,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-16 18:33:14,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:14,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:14,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:14,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:14,402 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:14,404 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:14,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394860808] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:14,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:14,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:14,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938401237] [2025-03-16 18:33:14,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:14,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:14,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:14,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:14,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:14,407 INFO L87 Difference]: Start difference. First operand 541 states and 910 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:14,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:14,485 INFO L93 Difference]: Finished difference Result 1078 states and 1817 transitions. [2025-03-16 18:33:14,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:33:14,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2025-03-16 18:33:14,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:14,490 INFO L225 Difference]: With dead ends: 1078 [2025-03-16 18:33:14,490 INFO L226 Difference]: Without dead ends: 541 [2025-03-16 18:33:14,494 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:14,494 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 5 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:14,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2688 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:14,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2025-03-16 18:33:14,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2025-03-16 18:33:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 424 states have (on average 1.7122641509433962) internal successors, (726), 445 states have internal predecessors, (726), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2025-03-16 18:33:14,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 909 transitions. [2025-03-16 18:33:14,524 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 909 transitions. Word has length 75 [2025-03-16 18:33:14,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:14,525 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 909 transitions. [2025-03-16 18:33:14,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 909 transitions. [2025-03-16 18:33:14,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-16 18:33:14,527 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:14,527 INFO L218 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] [2025-03-16 18:33:14,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 18:33:14,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-16 18:33:14,728 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:14,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:14,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1459097992, now seen corresponding path program 1 times [2025-03-16 18:33:14,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:14,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216502795] [2025-03-16 18:33:14,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:14,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:14,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-16 18:33:14,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-16 18:33:14,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:14,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:14,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:14,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216502795] [2025-03-16 18:33:14,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216502795] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:14,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133962717] [2025-03-16 18:33:14,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:14,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:14,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:14,867 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) [2025-03-16 18:33:14,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 18:33:14,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-16 18:33:15,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-16 18:33:15,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:15,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:15,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:15,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:15,174 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:15,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133962717] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:15,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:15,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:15,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286729189] [2025-03-16 18:33:15,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:15,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:15,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:15,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:15,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:15,175 INFO L87 Difference]: Start difference. First operand 541 states and 909 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:15,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:15,226 INFO L93 Difference]: Finished difference Result 1078 states and 1815 transitions. [2025-03-16 18:33:15,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:33:15,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2025-03-16 18:33:15,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:15,234 INFO L225 Difference]: With dead ends: 1078 [2025-03-16 18:33:15,234 INFO L226 Difference]: Without dead ends: 541 [2025-03-16 18:33:15,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:15,239 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 4 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:15,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2688 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:15,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2025-03-16 18:33:15,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2025-03-16 18:33:15,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 424 states have (on average 1.7099056603773586) internal successors, (725), 445 states have internal predecessors, (725), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2025-03-16 18:33:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 908 transitions. [2025-03-16 18:33:15,266 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 908 transitions. Word has length 77 [2025-03-16 18:33:15,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:15,266 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 908 transitions. [2025-03-16 18:33:15,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:15,267 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 908 transitions. [2025-03-16 18:33:15,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-16 18:33:15,268 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:15,268 INFO L218 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] [2025-03-16 18:33:15,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:15,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:15,469 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:15,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:15,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1527877898, now seen corresponding path program 1 times [2025-03-16 18:33:15,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:15,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224513780] [2025-03-16 18:33:15,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:15,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:15,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-16 18:33:15,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-16 18:33:15,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:15,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:15,594 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:15,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:15,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224513780] [2025-03-16 18:33:15,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224513780] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:15,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052678496] [2025-03-16 18:33:15,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:15,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:15,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:15,599 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) [2025-03-16 18:33:15,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 18:33:15,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-16 18:33:15,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-16 18:33:15,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:15,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:15,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:15,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:15,897 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:15,897 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:15,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052678496] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:15,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:15,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:15,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797220294] [2025-03-16 18:33:15,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:15,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:15,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:15,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:15,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:15,899 INFO L87 Difference]: Start difference. First operand 541 states and 908 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:15,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:15,980 INFO L93 Difference]: Finished difference Result 1085 states and 1822 transitions. [2025-03-16 18:33:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:15,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2025-03-16 18:33:15,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:15,985 INFO L225 Difference]: With dead ends: 1085 [2025-03-16 18:33:15,986 INFO L226 Difference]: Without dead ends: 550 [2025-03-16 18:33:15,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:15,989 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 13 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:15,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2685 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:15,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2025-03-16 18:33:16,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2025-03-16 18:33:16,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 432 states have (on average 1.7060185185185186) internal successors, (737), 453 states have internal predecessors, (737), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2025-03-16 18:33:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 920 transitions. [2025-03-16 18:33:16,018 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 920 transitions. Word has length 79 [2025-03-16 18:33:16,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:16,018 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 920 transitions. [2025-03-16 18:33:16,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:16,019 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 920 transitions. [2025-03-16 18:33:16,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-16 18:33:16,020 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:16,021 INFO L218 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] [2025-03-16 18:33:16,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-16 18:33:16,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:16,221 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:16,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:16,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2111687381, now seen corresponding path program 1 times [2025-03-16 18:33:16,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:16,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573944892] [2025-03-16 18:33:16,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:16,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:16,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-16 18:33:16,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-16 18:33:16,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:16,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:16,346 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:16,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:16,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573944892] [2025-03-16 18:33:16,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573944892] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:16,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224578684] [2025-03-16 18:33:16,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:16,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:16,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:16,349 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) [2025-03-16 18:33:16,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 18:33:16,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-16 18:33:16,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-16 18:33:16,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:16,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:16,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:16,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:16,667 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:16,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224578684] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:16,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:16,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660745711] [2025-03-16 18:33:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:16,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:16,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:16,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:16,669 INFO L87 Difference]: Start difference. First operand 550 states and 920 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:16,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:16,727 INFO L93 Difference]: Finished difference Result 1087 states and 1823 transitions. [2025-03-16 18:33:16,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:16,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2025-03-16 18:33:16,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:16,734 INFO L225 Difference]: With dead ends: 1087 [2025-03-16 18:33:16,734 INFO L226 Difference]: Without dead ends: 550 [2025-03-16 18:33:16,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:16,737 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 11 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:16,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2685 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:16,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2025-03-16 18:33:16,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2025-03-16 18:33:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 432 states have (on average 1.7037037037037037) internal successors, (736), 453 states have internal predecessors, (736), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2025-03-16 18:33:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 919 transitions. [2025-03-16 18:33:16,760 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 919 transitions. Word has length 80 [2025-03-16 18:33:16,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:16,760 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 919 transitions. [2025-03-16 18:33:16,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:16,761 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 919 transitions. [2025-03-16 18:33:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-16 18:33:16,762 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:16,762 INFO L218 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] [2025-03-16 18:33:16,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-16 18:33:16,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:16,963 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:16,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:16,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1347481785, now seen corresponding path program 1 times [2025-03-16 18:33:16,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:16,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929623098] [2025-03-16 18:33:16,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:16,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:16,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-16 18:33:16,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-16 18:33:16,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:16,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:17,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:17,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929623098] [2025-03-16 18:33:17,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929623098] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:17,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130316570] [2025-03-16 18:33:17,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:17,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:17,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:17,051 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) [2025-03-16 18:33:17,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 18:33:17,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-16 18:33:17,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-16 18:33:17,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:17,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:17,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:17,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:17,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:17,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:17,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130316570] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:17,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:17,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:17,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289160815] [2025-03-16 18:33:17,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:17,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:17,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:17,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:17,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:17,336 INFO L87 Difference]: Start difference. First operand 550 states and 919 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:17,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:17,392 INFO L93 Difference]: Finished difference Result 1087 states and 1822 transitions. [2025-03-16 18:33:17,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:17,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2025-03-16 18:33:17,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:17,398 INFO L225 Difference]: With dead ends: 1087 [2025-03-16 18:33:17,398 INFO L226 Difference]: Without dead ends: 550 [2025-03-16 18:33:17,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:17,402 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 10 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:17,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2685 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2025-03-16 18:33:17,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2025-03-16 18:33:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 432 states have (on average 1.7013888888888888) internal successors, (735), 453 states have internal predecessors, (735), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2025-03-16 18:33:17,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 918 transitions. [2025-03-16 18:33:17,424 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 918 transitions. Word has length 81 [2025-03-16 18:33:17,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:17,424 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 918 transitions. [2025-03-16 18:33:17,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:17,424 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 918 transitions. [2025-03-16 18:33:17,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 18:33:17,425 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:17,426 INFO L218 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] [2025-03-16 18:33:17,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-16 18:33:17,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:17,626 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:17,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1505332536, now seen corresponding path program 1 times [2025-03-16 18:33:17,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:17,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134114632] [2025-03-16 18:33:17,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:17,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:17,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 18:33:17,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 18:33:17,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:17,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:17,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:17,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134114632] [2025-03-16 18:33:17,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134114632] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:17,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070843639] [2025-03-16 18:33:17,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:17,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:17,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:17,767 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) [2025-03-16 18:33:17,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 18:33:17,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 18:33:18,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 18:33:18,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:18,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:18,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:18,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:33:18,055 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:18,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070843639] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:18,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:18,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-16 18:33:18,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111361344] [2025-03-16 18:33:18,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:18,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:18,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:18,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:18,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:18,056 INFO L87 Difference]: Start difference. First operand 550 states and 918 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:18,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:18,166 INFO L93 Difference]: Finished difference Result 1113 states and 1869 transitions. [2025-03-16 18:33:18,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:33:18,167 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2025-03-16 18:33:18,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:18,170 INFO L225 Difference]: With dead ends: 1113 [2025-03-16 18:33:18,170 INFO L226 Difference]: Without dead ends: 565 [2025-03-16 18:33:18,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:18,173 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 76 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:18,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2576 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:18,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2025-03-16 18:33:18,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 550. [2025-03-16 18:33:18,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 432 states have (on average 1.6898148148148149) internal successors, (730), 453 states have internal predecessors, (730), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2025-03-16 18:33:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 913 transitions. [2025-03-16 18:33:18,189 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 913 transitions. Word has length 82 [2025-03-16 18:33:18,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:18,189 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 913 transitions. [2025-03-16 18:33:18,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:18,189 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 913 transitions. [2025-03-16 18:33:18,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-16 18:33:18,190 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:18,190 INFO L218 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] [2025-03-16 18:33:18,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:18,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:18,391 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:18,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:18,392 INFO L85 PathProgramCache]: Analyzing trace with hash -627626940, now seen corresponding path program 1 times [2025-03-16 18:33:18,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:18,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884061080] [2025-03-16 18:33:18,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:18,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:18,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-16 18:33:18,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-16 18:33:18,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:18,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:18,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:18,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884061080] [2025-03-16 18:33:18,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884061080] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:18,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416653586] [2025-03-16 18:33:18,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:18,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:18,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:18,518 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) [2025-03-16 18:33:18,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-16 18:33:18,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-16 18:33:18,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-16 18:33:18,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:18,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:18,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:18,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:33:18,792 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:18,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416653586] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:18,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:18,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-16 18:33:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135000561] [2025-03-16 18:33:18,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:18,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:18,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:18,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:18,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:18,795 INFO L87 Difference]: Start difference. First operand 550 states and 913 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:18,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:18,901 INFO L93 Difference]: Finished difference Result 1113 states and 1859 transitions. [2025-03-16 18:33:18,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:33:18,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2025-03-16 18:33:18,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:18,905 INFO L225 Difference]: With dead ends: 1113 [2025-03-16 18:33:18,905 INFO L226 Difference]: Without dead ends: 565 [2025-03-16 18:33:18,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:18,907 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 75 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:18,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2576 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:18,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2025-03-16 18:33:18,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 550. [2025-03-16 18:33:18,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 432 states have (on average 1.6782407407407407) internal successors, (725), 453 states have internal predecessors, (725), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2025-03-16 18:33:18,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 908 transitions. [2025-03-16 18:33:18,924 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 908 transitions. Word has length 84 [2025-03-16 18:33:18,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:18,924 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 908 transitions. [2025-03-16 18:33:18,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:18,925 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 908 transitions. [2025-03-16 18:33:18,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-16 18:33:18,926 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:18,926 INFO L218 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] [2025-03-16 18:33:18,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-16 18:33:19,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-16 18:33:19,127 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:19,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:19,127 INFO L85 PathProgramCache]: Analyzing trace with hash 2105934248, now seen corresponding path program 1 times [2025-03-16 18:33:19,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:19,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374998511] [2025-03-16 18:33:19,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:19,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:19,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-16 18:33:19,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-16 18:33:19,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:19,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:19,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:19,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374998511] [2025-03-16 18:33:19,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374998511] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:19,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203571935] [2025-03-16 18:33:19,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:19,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:19,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:19,249 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) [2025-03-16 18:33:19,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-16 18:33:19,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-16 18:33:19,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-16 18:33:19,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:19,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:19,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:19,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:33:19,506 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:19,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203571935] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:19,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:19,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-16 18:33:19,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557037679] [2025-03-16 18:33:19,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:19,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:19,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:19,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:19,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:19,507 INFO L87 Difference]: Start difference. First operand 550 states and 908 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:19,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:19,642 INFO L93 Difference]: Finished difference Result 1164 states and 1932 transitions. [2025-03-16 18:33:19,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:19,642 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2025-03-16 18:33:19,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:19,646 INFO L225 Difference]: With dead ends: 1164 [2025-03-16 18:33:19,646 INFO L226 Difference]: Without dead ends: 631 [2025-03-16 18:33:19,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:19,650 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 130 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:19,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2607 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:19,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2025-03-16 18:33:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 601. [2025-03-16 18:33:19,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 482 states have (on average 1.6804979253112033) internal successors, (810), 503 states have internal predecessors, (810), 94 states have call successors, (94), 25 states have call predecessors, (94), 24 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2025-03-16 18:33:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 993 transitions. [2025-03-16 18:33:19,669 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 993 transitions. Word has length 86 [2025-03-16 18:33:19,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:19,669 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 993 transitions. [2025-03-16 18:33:19,669 INFO L472 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:19,669 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 993 transitions. [2025-03-16 18:33:19,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-16 18:33:19,670 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:19,671 INFO L218 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] [2025-03-16 18:33:19,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:19,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:19,871 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:19,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash -940727157, now seen corresponding path program 1 times [2025-03-16 18:33:19,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:19,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904593369] [2025-03-16 18:33:19,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:19,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:19,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-16 18:33:19,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-16 18:33:19,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:19,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:19,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:19,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:19,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904593369] [2025-03-16 18:33:19,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904593369] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:19,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143269407] [2025-03-16 18:33:19,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:19,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:19,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:19,987 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) [2025-03-16 18:33:19,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-16 18:33:20,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-16 18:33:20,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-16 18:33:20,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:20,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:20,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:20,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:33:20,281 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:20,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143269407] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:20,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:20,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-16 18:33:20,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306161332] [2025-03-16 18:33:20,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:20,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:20,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:20,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:20,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:20,284 INFO L87 Difference]: Start difference. First operand 601 states and 993 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:20,437 INFO L93 Difference]: Finished difference Result 1179 states and 1956 transitions. [2025-03-16 18:33:20,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:20,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2025-03-16 18:33:20,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:20,443 INFO L225 Difference]: With dead ends: 1179 [2025-03-16 18:33:20,443 INFO L226 Difference]: Without dead ends: 631 [2025-03-16 18:33:20,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:20,446 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 124 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:20,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2580 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:20,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2025-03-16 18:33:20,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 601. [2025-03-16 18:33:20,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 482 states have (on average 1.670124481327801) internal successors, (805), 503 states have internal predecessors, (805), 94 states have call successors, (94), 25 states have call predecessors, (94), 24 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2025-03-16 18:33:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 988 transitions. [2025-03-16 18:33:20,488 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 988 transitions. Word has length 87 [2025-03-16 18:33:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:20,488 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 988 transitions. [2025-03-16 18:33:20,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 988 transitions. [2025-03-16 18:33:20,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-16 18:33:20,489 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:20,489 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:20,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:20,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-16 18:33:20,690 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:20,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:20,691 INFO L85 PathProgramCache]: Analyzing trace with hash 726132239, now seen corresponding path program 1 times [2025-03-16 18:33:20,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:20,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387194109] [2025-03-16 18:33:20,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:20,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:20,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-16 18:33:20,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-16 18:33:20,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:20,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:20,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:20,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387194109] [2025-03-16 18:33:20,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387194109] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:20,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386367828] [2025-03-16 18:33:20,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:20,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:20,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:20,800 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) [2025-03-16 18:33:20,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-16 18:33:20,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-16 18:33:21,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-16 18:33:21,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:21,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:21,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:33:21,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:33:21,105 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:21,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386367828] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:21,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:21,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-16 18:33:21,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424297919] [2025-03-16 18:33:21,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:21,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:33:21,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:21,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:33:21,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:33:21,107 INFO L87 Difference]: Start difference. First operand 601 states and 988 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 18:33:21,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:21,225 INFO L93 Difference]: Finished difference Result 1172 states and 1936 transitions. [2025-03-16 18:33:21,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:33:21,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2025-03-16 18:33:21,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:21,230 INFO L225 Difference]: With dead ends: 1172 [2025-03-16 18:33:21,230 INFO L226 Difference]: Without dead ends: 639 [2025-03-16 18:33:21,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:33:21,233 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 113 mSDsluCounter, 5179 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6057 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:21,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6057 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2025-03-16 18:33:21,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 620. [2025-03-16 18:33:21,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 498 states have (on average 1.6686746987951808) internal successors, (831), 521 states have internal predecessors, (831), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2025-03-16 18:33:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1018 transitions. [2025-03-16 18:33:21,250 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1018 transitions. Word has length 87 [2025-03-16 18:33:21,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:21,251 INFO L471 AbstractCegarLoop]: Abstraction has 620 states and 1018 transitions. [2025-03-16 18:33:21,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 18:33:21,251 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1018 transitions. [2025-03-16 18:33:21,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-16 18:33:21,252 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:21,252 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:21,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-16 18:33:21,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-16 18:33:21,453 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:21,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:21,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1593184464, now seen corresponding path program 1 times [2025-03-16 18:33:21,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:21,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466141299] [2025-03-16 18:33:21,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:21,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:21,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-16 18:33:21,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-16 18:33:21,476 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:21,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:21,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:21,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466141299] [2025-03-16 18:33:21,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466141299] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:21,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067377141] [2025-03-16 18:33:21,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:21,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:21,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:21,528 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) [2025-03-16 18:33:21,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-16 18:33:21,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-16 18:33:21,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-16 18:33:21,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:21,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:21,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:33:21,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:21,833 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:21,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067377141] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:21,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:21,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-16 18:33:21,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603905370] [2025-03-16 18:33:21,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:21,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:33:21,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:21,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:33:21,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:21,838 INFO L87 Difference]: Start difference. First operand 620 states and 1018 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 18:33:21,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:21,912 INFO L93 Difference]: Finished difference Result 1110 states and 1836 transitions. [2025-03-16 18:33:21,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:33:21,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2025-03-16 18:33:21,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:21,917 INFO L225 Difference]: With dead ends: 1110 [2025-03-16 18:33:21,917 INFO L226 Difference]: Without dead ends: 644 [2025-03-16 18:33:21,920 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:21,920 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 86 mSDsluCounter, 4376 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:21,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5267 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:21,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2025-03-16 18:33:21,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 639. [2025-03-16 18:33:21,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 514 states have (on average 1.6673151750972763) internal successors, (857), 539 states have internal predecessors, (857), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2025-03-16 18:33:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1048 transitions. [2025-03-16 18:33:21,945 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1048 transitions. Word has length 87 [2025-03-16 18:33:21,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:21,946 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 1048 transitions. [2025-03-16 18:33:21,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 18:33:21,946 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1048 transitions. [2025-03-16 18:33:21,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-16 18:33:21,948 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:21,948 INFO L218 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] [2025-03-16 18:33:21,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-16 18:33:22,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-16 18:33:22,148 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:22,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:22,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1479092060, now seen corresponding path program 1 times [2025-03-16 18:33:22,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:22,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295198168] [2025-03-16 18:33:22,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:22,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:22,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 18:33:22,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 18:33:22,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:22,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:22,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:22,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295198168] [2025-03-16 18:33:22,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295198168] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:22,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909069828] [2025-03-16 18:33:22,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:22,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:22,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:22,254 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) [2025-03-16 18:33:22,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-16 18:33:22,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 18:33:22,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 18:33:22,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:22,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:22,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:33:22,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:22,607 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:22,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909069828] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:22,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:22,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-16 18:33:22,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140976395] [2025-03-16 18:33:22,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:22,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:33:22,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:22,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:33:22,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:22,609 INFO L87 Difference]: Start difference. First operand 639 states and 1048 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 18:33:22,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:22,680 INFO L93 Difference]: Finished difference Result 1140 states and 1887 transitions. [2025-03-16 18:33:22,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:33:22,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 88 [2025-03-16 18:33:22,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:22,686 INFO L225 Difference]: With dead ends: 1140 [2025-03-16 18:33:22,687 INFO L226 Difference]: Without dead ends: 674 [2025-03-16 18:33:22,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:22,690 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 95 mSDsluCounter, 4366 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5257 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:22,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5257 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:22,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2025-03-16 18:33:22,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 639. [2025-03-16 18:33:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 514 states have (on average 1.6673151750972763) internal successors, (857), 539 states have internal predecessors, (857), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2025-03-16 18:33:22,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1048 transitions. [2025-03-16 18:33:22,714 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1048 transitions. Word has length 88 [2025-03-16 18:33:22,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:22,715 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 1048 transitions. [2025-03-16 18:33:22,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 18:33:22,715 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1048 transitions. [2025-03-16 18:33:22,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-16 18:33:22,717 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:22,717 INFO L218 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] [2025-03-16 18:33:22,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-16 18:33:22,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-16 18:33:22,919 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:22,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:22,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1205410453, now seen corresponding path program 1 times [2025-03-16 18:33:22,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:22,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795312134] [2025-03-16 18:33:22,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:22,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:22,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 18:33:22,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 18:33:22,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:22,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:33:22,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:22,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795312134] [2025-03-16 18:33:22,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795312134] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:22,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239376717] [2025-03-16 18:33:22,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:22,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:22,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:23,001 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) [2025-03-16 18:33:23,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-16 18:33:23,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 18:33:23,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 18:33:23,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:23,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:23,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:33:23,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:23,314 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:23,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239376717] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:23,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:23,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-16 18:33:23,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807205105] [2025-03-16 18:33:23,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:23,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:33:23,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:23,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:33:23,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:23,316 INFO L87 Difference]: Start difference. First operand 639 states and 1048 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 18:33:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:23,437 INFO L93 Difference]: Finished difference Result 1125 states and 1861 transitions. [2025-03-16 18:33:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:33:23,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 88 [2025-03-16 18:33:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:23,442 INFO L225 Difference]: With dead ends: 1125 [2025-03-16 18:33:23,443 INFO L226 Difference]: Without dead ends: 659 [2025-03-16 18:33:23,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:33:23,445 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 113 mSDsluCounter, 5185 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6065 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:23,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6065 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:23,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2025-03-16 18:33:23,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 639. [2025-03-16 18:33:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 514 states have (on average 1.6673151750972763) internal successors, (857), 539 states have internal predecessors, (857), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2025-03-16 18:33:23,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1048 transitions. [2025-03-16 18:33:23,465 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1048 transitions. Word has length 88 [2025-03-16 18:33:23,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:23,465 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 1048 transitions. [2025-03-16 18:33:23,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 18:33:23,466 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1048 transitions. [2025-03-16 18:33:23,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-16 18:33:23,467 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:23,467 INFO L218 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] [2025-03-16 18:33:23,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-16 18:33:23,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:23,668 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:23,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:23,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1731322451, now seen corresponding path program 1 times [2025-03-16 18:33:23,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:23,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750692477] [2025-03-16 18:33:23,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:23,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:23,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 18:33:23,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 18:33:23,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:23,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:23,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:23,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750692477] [2025-03-16 18:33:23,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750692477] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:23,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97267058] [2025-03-16 18:33:23,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:23,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:23,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:23,743 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) [2025-03-16 18:33:23,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-16 18:33:23,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 18:33:23,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 18:33:23,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:23,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:23,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:24,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 18:33:24,018 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:24,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97267058] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:24,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:24,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:24,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894579534] [2025-03-16 18:33:24,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:24,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:24,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:24,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:24,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:24,019 INFO L87 Difference]: Start difference. First operand 639 states and 1048 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:24,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:24,053 INFO L93 Difference]: Finished difference Result 1177 states and 1946 transitions. [2025-03-16 18:33:24,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:24,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2025-03-16 18:33:24,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:24,057 INFO L225 Difference]: With dead ends: 1177 [2025-03-16 18:33:24,057 INFO L226 Difference]: Without dead ends: 639 [2025-03-16 18:33:24,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:24,060 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 13 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:24,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2654 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:24,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2025-03-16 18:33:24,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2025-03-16 18:33:24,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 514 states have (on average 1.6595330739299612) internal successors, (853), 539 states have internal predecessors, (853), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2025-03-16 18:33:24,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1044 transitions. [2025-03-16 18:33:24,078 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1044 transitions. Word has length 88 [2025-03-16 18:33:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:24,078 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 1044 transitions. [2025-03-16 18:33:24,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1044 transitions. [2025-03-16 18:33:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-16 18:33:24,079 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:24,079 INFO L218 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] [2025-03-16 18:33:24,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-16 18:33:24,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-16 18:33:24,280 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:24,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:24,281 INFO L85 PathProgramCache]: Analyzing trace with hash -2060663130, now seen corresponding path program 1 times [2025-03-16 18:33:24,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:24,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547234826] [2025-03-16 18:33:24,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:24,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:24,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-16 18:33:24,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-16 18:33:24,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:24,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:33:24,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:24,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547234826] [2025-03-16 18:33:24,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547234826] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:24,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052537570] [2025-03-16 18:33:24,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:24,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:24,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:24,347 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) [2025-03-16 18:33:24,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-16 18:33:24,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-16 18:33:24,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-16 18:33:24,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:24,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:24,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:33:24,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:24,658 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:24,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052537570] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:24,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:24,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-16 18:33:24,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310456360] [2025-03-16 18:33:24,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:24,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:33:24,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:24,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:33:24,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:24,659 INFO L87 Difference]: Start difference. First operand 639 states and 1044 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 18:33:24,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:24,757 INFO L93 Difference]: Finished difference Result 1125 states and 1858 transitions. [2025-03-16 18:33:24,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:33:24,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2025-03-16 18:33:24,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:24,761 INFO L225 Difference]: With dead ends: 1125 [2025-03-16 18:33:24,761 INFO L226 Difference]: Without dead ends: 659 [2025-03-16 18:33:24,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:33:24,765 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 121 mSDsluCounter, 5147 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 6021 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:24,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 6021 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:24,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2025-03-16 18:33:24,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 639. [2025-03-16 18:33:24,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 514 states have (on average 1.6595330739299612) internal successors, (853), 539 states have internal predecessors, (853), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2025-03-16 18:33:24,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1044 transitions. [2025-03-16 18:33:24,781 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1044 transitions. Word has length 89 [2025-03-16 18:33:24,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:24,781 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 1044 transitions. [2025-03-16 18:33:24,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 18:33:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1044 transitions. [2025-03-16 18:33:24,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 18:33:24,782 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:24,782 INFO L218 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] [2025-03-16 18:33:24,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-16 18:33:24,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-16 18:33:24,983 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:24,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:24,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1061039634, now seen corresponding path program 1 times [2025-03-16 18:33:24,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:24,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928819243] [2025-03-16 18:33:24,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:24,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:24,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 18:33:24,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 18:33:24,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:24,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:33:25,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:25,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928819243] [2025-03-16 18:33:25,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928819243] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:25,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569918217] [2025-03-16 18:33:25,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:25,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:25,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:25,042 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) [2025-03-16 18:33:25,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-16 18:33:25,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 18:33:25,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 18:33:25,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:25,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:25,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-16 18:33:25,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:33:25,298 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:25,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569918217] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:25,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:25,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:25,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436932396] [2025-03-16 18:33:25,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:25,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:25,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:25,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:25,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:25,300 INFO L87 Difference]: Start difference. First operand 639 states and 1044 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:25,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:25,354 INFO L93 Difference]: Finished difference Result 1221 states and 2014 transitions. [2025-03-16 18:33:25,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:33:25,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2025-03-16 18:33:25,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:25,358 INFO L225 Difference]: With dead ends: 1221 [2025-03-16 18:33:25,358 INFO L226 Difference]: Without dead ends: 663 [2025-03-16 18:33:25,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:25,359 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 6 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:25,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2627 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:25,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2025-03-16 18:33:25,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 663. [2025-03-16 18:33:25,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 538 states have (on average 1.637546468401487) internal successors, (881), 563 states have internal predecessors, (881), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2025-03-16 18:33:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1072 transitions. [2025-03-16 18:33:25,374 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1072 transitions. Word has length 90 [2025-03-16 18:33:25,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:25,374 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1072 transitions. [2025-03-16 18:33:25,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:25,374 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1072 transitions. [2025-03-16 18:33:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 18:33:25,375 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:25,375 INFO L218 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] [2025-03-16 18:33:25,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:25,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-16 18:33:25,580 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:25,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:25,580 INFO L85 PathProgramCache]: Analyzing trace with hash -242786793, now seen corresponding path program 1 times [2025-03-16 18:33:25,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:25,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274396433] [2025-03-16 18:33:25,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:25,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:25,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 18:33:25,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 18:33:25,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:25,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:25,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:25,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274396433] [2025-03-16 18:33:25,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274396433] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:25,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335530280] [2025-03-16 18:33:25,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:25,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:25,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:25,643 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) [2025-03-16 18:33:25,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-16 18:33:25,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 18:33:25,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 18:33:25,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:25,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:25,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:33:25,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:33:26,119 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:26,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335530280] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:26,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:26,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2025-03-16 18:33:26,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442322311] [2025-03-16 18:33:26,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:26,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:33:26,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:26,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:33:26,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:33:26,120 INFO L87 Difference]: Start difference. First operand 663 states and 1072 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:27,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:27,694 INFO L93 Difference]: Finished difference Result 1720 states and 2862 transitions. [2025-03-16 18:33:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:33:27,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2025-03-16 18:33:27,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:27,700 INFO L225 Difference]: With dead ends: 1720 [2025-03-16 18:33:27,700 INFO L226 Difference]: Without dead ends: 1259 [2025-03-16 18:33:27,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:27,702 INFO L435 NwaCegarLoop]: 369 mSDtfsCounter, 2614 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2721 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:27,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2721 Valid, 1114 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-16 18:33:27,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2025-03-16 18:33:27,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1143. [2025-03-16 18:33:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 919 states have (on average 1.6637649619151251) internal successors, (1529), 953 states have internal predecessors, (1529), 179 states have call successors, (179), 39 states have call predecessors, (179), 44 states have return successors, (185), 163 states have call predecessors, (185), 174 states have call successors, (185) [2025-03-16 18:33:27,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1893 transitions. [2025-03-16 18:33:27,746 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1893 transitions. Word has length 90 [2025-03-16 18:33:27,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:27,747 INFO L471 AbstractCegarLoop]: Abstraction has 1143 states and 1893 transitions. [2025-03-16 18:33:27,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:33:27,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1893 transitions. [2025-03-16 18:33:27,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-16 18:33:27,750 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:27,751 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:27,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:27,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-16 18:33:27,952 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:27,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:27,952 INFO L85 PathProgramCache]: Analyzing trace with hash -583316298, now seen corresponding path program 1 times [2025-03-16 18:33:27,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:27,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971043053] [2025-03-16 18:33:27,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:27,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:27,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-16 18:33:27,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-16 18:33:27,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:27,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:28,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:28,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971043053] [2025-03-16 18:33:28,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971043053] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:28,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732934576] [2025-03-16 18:33:28,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:28,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:28,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:28,026 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) [2025-03-16 18:33:28,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-16 18:33:28,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-16 18:33:28,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-16 18:33:28,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:28,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:28,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-16 18:33:28,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:33:28,434 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:28,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732934576] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:28,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:28,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-16 18:33:28,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608868367] [2025-03-16 18:33:28,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:28,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:33:28,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:28,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:33:28,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:28,435 INFO L87 Difference]: Start difference. First operand 1143 states and 1893 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:33:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:30,502 INFO L93 Difference]: Finished difference Result 2953 states and 4956 transitions. [2025-03-16 18:33:30,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-16 18:33:30,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 118 [2025-03-16 18:33:30,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:30,513 INFO L225 Difference]: With dead ends: 2953 [2025-03-16 18:33:30,514 INFO L226 Difference]: Without dead ends: 2010 [2025-03-16 18:33:30,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-03-16 18:33:30,518 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 1704 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 4682 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 4921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:30,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 2014 Invalid, 4921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 4682 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 18:33:30,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2025-03-16 18:33:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1842. [2025-03-16 18:33:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1466 states have (on average 1.6534788540245566) internal successors, (2424), 1510 states have internal predecessors, (2424), 301 states have call successors, (301), 58 states have call predecessors, (301), 74 states have return successors, (337), 284 states have call predecessors, (337), 296 states have call successors, (337) [2025-03-16 18:33:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 3062 transitions. [2025-03-16 18:33:30,593 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 3062 transitions. Word has length 118 [2025-03-16 18:33:30,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:30,593 INFO L471 AbstractCegarLoop]: Abstraction has 1842 states and 3062 transitions. [2025-03-16 18:33:30,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:33:30,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 3062 transitions. [2025-03-16 18:33:30,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-03-16 18:33:30,596 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:30,596 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:30,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:30,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:30,797 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:30,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1122462013, now seen corresponding path program 1 times [2025-03-16 18:33:30,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:30,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448591171] [2025-03-16 18:33:30,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:30,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:30,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-03-16 18:33:30,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-03-16 18:33:30,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:30,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:30,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:30,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448591171] [2025-03-16 18:33:30,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448591171] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:30,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96826303] [2025-03-16 18:33:30,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:30,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:30,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:30,872 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) [2025-03-16 18:33:30,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-16 18:33:30,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-03-16 18:33:31,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-03-16 18:33:31,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:31,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:31,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:33:31,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:33:31,165 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:31,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96826303] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:31,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:31,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:31,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569792569] [2025-03-16 18:33:31,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:31,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:31,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:31,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:31,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:31,166 INFO L87 Difference]: Start difference. First operand 1842 states and 3062 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:33:31,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:31,229 INFO L93 Difference]: Finished difference Result 3489 states and 5858 transitions. [2025-03-16 18:33:31,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:33:31,230 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2025-03-16 18:33:31,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:31,238 INFO L225 Difference]: With dead ends: 3489 [2025-03-16 18:33:31,238 INFO L226 Difference]: Without dead ends: 1850 [2025-03-16 18:33:31,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:31,245 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 0 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:31,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2676 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:31,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2025-03-16 18:33:31,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1846. [2025-03-16 18:33:31,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1470 states have (on average 1.6517006802721088) internal successors, (2428), 1514 states have internal predecessors, (2428), 301 states have call successors, (301), 58 states have call predecessors, (301), 74 states have return successors, (337), 284 states have call predecessors, (337), 296 states have call successors, (337) [2025-03-16 18:33:31,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 3066 transitions. [2025-03-16 18:33:31,306 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 3066 transitions. Word has length 119 [2025-03-16 18:33:31,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:31,307 INFO L471 AbstractCegarLoop]: Abstraction has 1846 states and 3066 transitions. [2025-03-16 18:33:31,307 INFO L472 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:33:31,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 3066 transitions. [2025-03-16 18:33:31,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-03-16 18:33:31,310 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:31,310 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:31,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:31,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:31,511 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:31,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:31,512 INFO L85 PathProgramCache]: Analyzing trace with hash -463073918, now seen corresponding path program 1 times [2025-03-16 18:33:31,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:31,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794817098] [2025-03-16 18:33:31,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:31,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:31,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-16 18:33:31,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-16 18:33:31,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:31,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:31,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:31,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794817098] [2025-03-16 18:33:31,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794817098] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:31,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332085545] [2025-03-16 18:33:31,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:31,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:31,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:31,577 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:31,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-16 18:33:31,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-16 18:33:31,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-16 18:33:31,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:31,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:31,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 2031 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-16 18:33:31,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 18:33:31,986 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:31,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332085545] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:31,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:31,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2025-03-16 18:33:31,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223235763] [2025-03-16 18:33:31,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:31,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 18:33:31,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:31,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 18:33:31,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:33:31,987 INFO L87 Difference]: Start difference. First operand 1846 states and 3066 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:33:34,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:34,566 INFO L93 Difference]: Finished difference Result 5667 states and 9685 transitions. [2025-03-16 18:33:34,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 18:33:34,566 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 122 [2025-03-16 18:33:34,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:34,587 INFO L225 Difference]: With dead ends: 5667 [2025-03-16 18:33:34,587 INFO L226 Difference]: Without dead ends: 4023 [2025-03-16 18:33:34,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2025-03-16 18:33:34,596 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 3589 mSDsluCounter, 3115 mSDsCounter, 0 mSdLazyCounter, 5465 mSolverCounterSat, 820 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3714 SdHoareTripleChecker+Valid, 4080 SdHoareTripleChecker+Invalid, 6285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 820 IncrementalHoareTripleChecker+Valid, 5465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:34,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3714 Valid, 4080 Invalid, 6285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [820 Valid, 5465 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-16 18:33:34,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4023 states. [2025-03-16 18:33:34,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4023 to 3988. [2025-03-16 18:33:34,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3988 states, 3137 states have (on average 1.6474338540006375) internal successors, (5168), 3228 states have internal predecessors, (5168), 686 states have call successors, (686), 112 states have call predecessors, (686), 164 states have return successors, (890), 674 states have call predecessors, (890), 681 states have call successors, (890) [2025-03-16 18:33:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 6744 transitions. [2025-03-16 18:33:34,762 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 6744 transitions. Word has length 122 [2025-03-16 18:33:34,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:34,762 INFO L471 AbstractCegarLoop]: Abstraction has 3988 states and 6744 transitions. [2025-03-16 18:33:34,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:33:34,762 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 6744 transitions. [2025-03-16 18:33:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-16 18:33:34,769 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:34,769 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:34,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:34,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:34,969 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:34,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:34,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1802186471, now seen corresponding path program 1 times [2025-03-16 18:33:34,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:34,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29514259] [2025-03-16 18:33:34,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:34,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:34,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-16 18:33:34,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-16 18:33:34,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:34,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:35,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:35,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29514259] [2025-03-16 18:33:35,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29514259] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:35,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144006974] [2025-03-16 18:33:35,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:35,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:35,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:35,037 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:35,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-16 18:33:35,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-16 18:33:35,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-16 18:33:35,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:35,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:35,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 2032 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:33:35,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:33:35,340 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:35,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144006974] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:35,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:35,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-03-16 18:33:35,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313258114] [2025-03-16 18:33:35,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:35,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:33:35,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:35,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:33:35,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:35,341 INFO L87 Difference]: Start difference. First operand 3988 states and 6744 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:33:35,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:35,838 INFO L93 Difference]: Finished difference Result 11142 states and 19332 transitions. [2025-03-16 18:33:35,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 18:33:35,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 123 [2025-03-16 18:33:35,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:35,884 INFO L225 Difference]: With dead ends: 11142 [2025-03-16 18:33:35,884 INFO L226 Difference]: Without dead ends: 7471 [2025-03-16 18:33:35,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:33:35,910 INFO L435 NwaCegarLoop]: 1385 mSDtfsCounter, 741 mSDsluCounter, 3484 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:35,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 4869 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 18:33:35,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7471 states. [2025-03-16 18:33:36,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7471 to 7446. [2025-03-16 18:33:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7446 states, 5823 states have (on average 1.6373003606388459) internal successors, (9534), 5995 states have internal predecessors, (9534), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 327 states have return successors, (1910), 1276 states have call predecessors, (1910), 1290 states have call successors, (1910) [2025-03-16 18:33:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7446 states to 7446 states and 12739 transitions. [2025-03-16 18:33:36,208 INFO L78 Accepts]: Start accepts. Automaton has 7446 states and 12739 transitions. Word has length 123 [2025-03-16 18:33:36,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:36,208 INFO L471 AbstractCegarLoop]: Abstraction has 7446 states and 12739 transitions. [2025-03-16 18:33:36,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:33:36,209 INFO L276 IsEmpty]: Start isEmpty. Operand 7446 states and 12739 transitions. [2025-03-16 18:33:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-16 18:33:36,220 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:36,220 INFO L218 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:36,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-16 18:33:36,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:36,421 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:36,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:36,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1727773375, now seen corresponding path program 1 times [2025-03-16 18:33:36,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:36,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880595940] [2025-03-16 18:33:36,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:36,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:36,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-16 18:33:36,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-16 18:33:36,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:36,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:36,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:36,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880595940] [2025-03-16 18:33:36,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880595940] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:36,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647653404] [2025-03-16 18:33:36,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:36,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:36,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:36,521 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:36,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-16 18:33:36,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-16 18:33:36,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-16 18:33:36,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:36,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:36,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 2032 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-16 18:33:36,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:36,818 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:33:36,818 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:36,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647653404] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:36,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:36,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-16 18:33:36,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666093923] [2025-03-16 18:33:36,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:36,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:36,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:36,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:36,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:36,819 INFO L87 Difference]: Start difference. First operand 7446 states and 12739 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:33:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:37,090 INFO L93 Difference]: Finished difference Result 14735 states and 25264 transitions. [2025-03-16 18:33:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:33:37,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2025-03-16 18:33:37,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:37,125 INFO L225 Difference]: With dead ends: 14735 [2025-03-16 18:33:37,125 INFO L226 Difference]: Without dead ends: 7482 [2025-03-16 18:33:37,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:37,149 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 5 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:37,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2626 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:37,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2025-03-16 18:33:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 7464. [2025-03-16 18:33:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7464 states, 5841 states have (on average 1.6373908577298408) internal successors, (9564), 6013 states have internal predecessors, (9564), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 327 states have return successors, (1910), 1276 states have call predecessors, (1910), 1290 states have call successors, (1910) [2025-03-16 18:33:37,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7464 states to 7464 states and 12769 transitions. [2025-03-16 18:33:37,405 INFO L78 Accepts]: Start accepts. Automaton has 7464 states and 12769 transitions. Word has length 125 [2025-03-16 18:33:37,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:37,405 INFO L471 AbstractCegarLoop]: Abstraction has 7464 states and 12769 transitions. [2025-03-16 18:33:37,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:33:37,405 INFO L276 IsEmpty]: Start isEmpty. Operand 7464 states and 12769 transitions. [2025-03-16 18:33:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-03-16 18:33:37,416 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:37,416 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:37,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-16 18:33:37,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:37,648 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:37,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:37,649 INFO L85 PathProgramCache]: Analyzing trace with hash 592311377, now seen corresponding path program 1 times [2025-03-16 18:33:37,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:37,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875213452] [2025-03-16 18:33:37,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:37,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:37,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-16 18:33:37,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-16 18:33:37,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:37,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:37,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875213452] [2025-03-16 18:33:37,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875213452] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127508620] [2025-03-16 18:33:37,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:37,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:37,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:37,763 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:37,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-16 18:33:37,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-16 18:33:38,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-16 18:33:38,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:38,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:38,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-16 18:33:38,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:38,068 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:38,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127508620] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:38,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:38,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-16 18:33:38,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550263511] [2025-03-16 18:33:38,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:38,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:33:38,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:38,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:33:38,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:33:38,070 INFO L87 Difference]: Start difference. First operand 7464 states and 12769 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:33:38,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:38,416 INFO L93 Difference]: Finished difference Result 14677 states and 25159 transitions. [2025-03-16 18:33:38,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:33:38,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2025-03-16 18:33:38,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:38,446 INFO L225 Difference]: With dead ends: 14677 [2025-03-16 18:33:38,446 INFO L226 Difference]: Without dead ends: 7534 [2025-03-16 18:33:38,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:33:38,469 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 89 mSDsluCounter, 5168 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 6042 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:38,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 6042 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:38,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7534 states. [2025-03-16 18:33:38,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7534 to 7467. [2025-03-16 18:33:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7467 states, 5843 states have (on average 1.637001540304638) internal successors, (9565), 6016 states have internal predecessors, (9565), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 328 states have return successors, (1911), 1276 states have call predecessors, (1911), 1290 states have call successors, (1911) [2025-03-16 18:33:38,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7467 states to 7467 states and 12771 transitions. [2025-03-16 18:33:38,843 INFO L78 Accepts]: Start accepts. Automaton has 7467 states and 12771 transitions. Word has length 126 [2025-03-16 18:33:38,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:38,843 INFO L471 AbstractCegarLoop]: Abstraction has 7467 states and 12771 transitions. [2025-03-16 18:33:38,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:33:38,844 INFO L276 IsEmpty]: Start isEmpty. Operand 7467 states and 12771 transitions. [2025-03-16 18:33:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-03-16 18:33:38,857 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:38,857 INFO L218 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, 1, 1, 1] [2025-03-16 18:33:38,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:39,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:39,059 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:39,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1598945938, now seen corresponding path program 1 times [2025-03-16 18:33:39,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:39,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994401730] [2025-03-16 18:33:39,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:39,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:39,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-16 18:33:39,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-16 18:33:39,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:39,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:39,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:39,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994401730] [2025-03-16 18:33:39,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994401730] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:39,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288948209] [2025-03-16 18:33:39,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:39,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:39,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:39,213 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:39,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-16 18:33:39,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-16 18:33:39,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-16 18:33:39,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:39,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:39,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 2033 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:33:39,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 18:33:39,660 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:39,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288948209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:39,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:39,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2025-03-16 18:33:39,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004362095] [2025-03-16 18:33:39,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:39,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:33:39,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:39,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:33:39,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:39,661 INFO L87 Difference]: Start difference. First operand 7467 states and 12771 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-16 18:33:40,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:40,088 INFO L93 Difference]: Finished difference Result 7976 states and 13762 transitions. [2025-03-16 18:33:40,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:40,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 126 [2025-03-16 18:33:40,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:40,125 INFO L225 Difference]: With dead ends: 7976 [2025-03-16 18:33:40,125 INFO L226 Difference]: Without dead ends: 7959 [2025-03-16 18:33:40,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:40,133 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 870 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:40,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 2298 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 18:33:40,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7959 states. [2025-03-16 18:33:40,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7959 to 7499. [2025-03-16 18:33:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7499 states, 5875 states have (on average 1.633531914893617) internal successors, (9597), 6048 states have internal predecessors, (9597), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 328 states have return successors, (1911), 1276 states have call predecessors, (1911), 1290 states have call successors, (1911) [2025-03-16 18:33:40,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7499 states to 7499 states and 12803 transitions. [2025-03-16 18:33:40,383 INFO L78 Accepts]: Start accepts. Automaton has 7499 states and 12803 transitions. Word has length 126 [2025-03-16 18:33:40,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:40,384 INFO L471 AbstractCegarLoop]: Abstraction has 7499 states and 12803 transitions. [2025-03-16 18:33:40,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-16 18:33:40,384 INFO L276 IsEmpty]: Start isEmpty. Operand 7499 states and 12803 transitions. [2025-03-16 18:33:40,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 18:33:40,393 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:40,393 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:40,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-16 18:33:40,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-16 18:33:40,598 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:40,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:40,598 INFO L85 PathProgramCache]: Analyzing trace with hash -273542000, now seen corresponding path program 1 times [2025-03-16 18:33:40,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:40,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734959243] [2025-03-16 18:33:40,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:40,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:40,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 18:33:40,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 18:33:40,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:40,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:40,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:40,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734959243] [2025-03-16 18:33:40,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734959243] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:40,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25793338] [2025-03-16 18:33:40,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:40,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:40,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:40,698 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:40,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-16 18:33:40,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 18:33:40,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 18:33:40,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:40,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:40,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-16 18:33:40,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 18:33:41,027 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:41,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25793338] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:41,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:41,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-03-16 18:33:41,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562685420] [2025-03-16 18:33:41,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:41,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:33:41,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:41,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:33:41,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:33:41,028 INFO L87 Difference]: Start difference. First operand 7499 states and 12803 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:33:41,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:41,433 INFO L93 Difference]: Finished difference Result 8161 states and 13923 transitions. [2025-03-16 18:33:41,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:33:41,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2025-03-16 18:33:41,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:41,471 INFO L225 Difference]: With dead ends: 8161 [2025-03-16 18:33:41,471 INFO L226 Difference]: Without dead ends: 8144 [2025-03-16 18:33:41,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:33:41,480 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 843 mSDsluCounter, 2625 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 3518 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:41,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 3518 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 18:33:41,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8144 states. [2025-03-16 18:33:41,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8144 to 8091. [2025-03-16 18:33:41,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8091 states, 6335 states have (on average 1.6222573007103394) internal successors, (10277), 6508 states have internal predecessors, (10277), 1387 states have call successors, (1387), 268 states have call predecessors, (1387), 368 states have return successors, (2135), 1368 states have call predecessors, (2135), 1382 states have call successors, (2135) [2025-03-16 18:33:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 13799 transitions. [2025-03-16 18:33:41,757 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 13799 transitions. Word has length 132 [2025-03-16 18:33:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:41,757 INFO L471 AbstractCegarLoop]: Abstraction has 8091 states and 13799 transitions. [2025-03-16 18:33:41,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:33:41,758 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 13799 transitions. [2025-03-16 18:33:41,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-16 18:33:41,771 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:41,771 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:41,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:41,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-16 18:33:41,973 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:41,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:41,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1766972947, now seen corresponding path program 1 times [2025-03-16 18:33:41,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:41,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104092081] [2025-03-16 18:33:41,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:41,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:41,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-16 18:33:41,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-16 18:33:41,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:41,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:33:42,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:42,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104092081] [2025-03-16 18:33:42,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104092081] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:42,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148290562] [2025-03-16 18:33:42,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:42,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:42,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:42,160 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:42,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-16 18:33:42,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-16 18:33:42,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-16 18:33:42,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:42,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:42,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 2085 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-16 18:33:42,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 18:33:42,494 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:42,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148290562] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:42,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:42,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-03-16 18:33:42,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113345754] [2025-03-16 18:33:42,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:42,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:33:42,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:42,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:33:42,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:42,496 INFO L87 Difference]: Start difference. First operand 8091 states and 13799 transitions. Second operand has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-16 18:33:42,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:42,743 INFO L93 Difference]: Finished difference Result 16042 states and 27396 transitions. [2025-03-16 18:33:42,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:33:42,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 142 [2025-03-16 18:33:42,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:42,779 INFO L225 Difference]: With dead ends: 16042 [2025-03-16 18:33:42,779 INFO L226 Difference]: Without dead ends: 8171 [2025-03-16 18:33:42,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:33:42,811 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 119 mSDsluCounter, 4323 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5208 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:42,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5208 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:42,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8171 states. [2025-03-16 18:33:43,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8171 to 8091. [2025-03-16 18:33:43,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8091 states, 6335 states have (on average 1.6222573007103394) internal successors, (10277), 6508 states have internal predecessors, (10277), 1387 states have call successors, (1387), 268 states have call predecessors, (1387), 368 states have return successors, (2135), 1368 states have call predecessors, (2135), 1382 states have call successors, (2135) [2025-03-16 18:33:43,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 13799 transitions. [2025-03-16 18:33:43,216 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 13799 transitions. Word has length 142 [2025-03-16 18:33:43,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:43,218 INFO L471 AbstractCegarLoop]: Abstraction has 8091 states and 13799 transitions. [2025-03-16 18:33:43,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-16 18:33:43,218 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 13799 transitions. [2025-03-16 18:33:43,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-16 18:33:43,230 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:43,230 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:43,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-16 18:33:43,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-16 18:33:43,431 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:43,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:43,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1567728809, now seen corresponding path program 1 times [2025-03-16 18:33:43,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:43,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511270802] [2025-03-16 18:33:43,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:43,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:43,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-16 18:33:43,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-16 18:33:43,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:43,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:33:43,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:43,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511270802] [2025-03-16 18:33:43,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511270802] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:43,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565997261] [2025-03-16 18:33:43,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:43,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:43,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:43,534 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:43,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-16 18:33:43,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-16 18:33:43,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-16 18:33:43,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:43,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:43,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 2086 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-16 18:33:43,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:33:43,827 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:43,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565997261] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:43,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:43,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-16 18:33:43,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174593316] [2025-03-16 18:33:43,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:43,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:43,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:43,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:43,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:33:43,828 INFO L87 Difference]: Start difference. First operand 8091 states and 13799 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:33:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:44,065 INFO L93 Difference]: Finished difference Result 16049 states and 27405 transitions. [2025-03-16 18:33:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:44,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2025-03-16 18:33:44,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:44,104 INFO L225 Difference]: With dead ends: 16049 [2025-03-16 18:33:44,104 INFO L226 Difference]: Without dead ends: 7921 [2025-03-16 18:33:44,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:33:44,134 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 7 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:44,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2657 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:44,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7921 states. [2025-03-16 18:33:44,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7921 to 7921. [2025-03-16 18:33:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7921 states, 6180 states have (on average 1.6239482200647248) internal successors, (10036), 6347 states have internal predecessors, (10036), 1382 states have call successors, (1382), 265 states have call predecessors, (1382), 358 states have return successors, (2121), 1362 states have call predecessors, (2121), 1377 states have call successors, (2121) [2025-03-16 18:33:44,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 13539 transitions. [2025-03-16 18:33:44,492 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 13539 transitions. Word has length 142 [2025-03-16 18:33:44,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:44,492 INFO L471 AbstractCegarLoop]: Abstraction has 7921 states and 13539 transitions. [2025-03-16 18:33:44,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:33:44,493 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 13539 transitions. [2025-03-16 18:33:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-16 18:33:44,501 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:44,501 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:44,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-16 18:33:44,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-16 18:33:44,702 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:44,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:44,702 INFO L85 PathProgramCache]: Analyzing trace with hash -340756743, now seen corresponding path program 1 times [2025-03-16 18:33:44,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:44,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116143147] [2025-03-16 18:33:44,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:44,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:44,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-16 18:33:44,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-16 18:33:44,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:44,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-16 18:33:44,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:44,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116143147] [2025-03-16 18:33:44,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116143147] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:44,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672995661] [2025-03-16 18:33:44,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:44,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:44,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:44,802 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:44,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-16 18:33:44,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-16 18:33:45,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-16 18:33:45,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:45,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:45,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 2091 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:45,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 18:33:45,098 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:45,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672995661] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:45,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:45,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-16 18:33:45,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823552781] [2025-03-16 18:33:45,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:45,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:45,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:45,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:45,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:33:45,099 INFO L87 Difference]: Start difference. First operand 7921 states and 13539 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:33:45,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:45,362 INFO L93 Difference]: Finished difference Result 15849 states and 27096 transitions. [2025-03-16 18:33:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:45,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 144 [2025-03-16 18:33:45,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:45,399 INFO L225 Difference]: With dead ends: 15849 [2025-03-16 18:33:45,399 INFO L226 Difference]: Without dead ends: 7954 [2025-03-16 18:33:45,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:45,427 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 128 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:45,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2536 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7954 states. [2025-03-16 18:33:45,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7954 to 7921. [2025-03-16 18:33:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7921 states, 6180 states have (on average 1.6237864077669903) internal successors, (10035), 6347 states have internal predecessors, (10035), 1382 states have call successors, (1382), 265 states have call predecessors, (1382), 358 states have return successors, (2121), 1362 states have call predecessors, (2121), 1377 states have call successors, (2121) [2025-03-16 18:33:45,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 13538 transitions. [2025-03-16 18:33:45,729 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 13538 transitions. Word has length 144 [2025-03-16 18:33:45,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:45,729 INFO L471 AbstractCegarLoop]: Abstraction has 7921 states and 13538 transitions. [2025-03-16 18:33:45,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:33:45,729 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 13538 transitions. [2025-03-16 18:33:45,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-16 18:33:45,736 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:45,737 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:45,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-03-16 18:33:45,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-16 18:33:45,939 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:45,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:45,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2100786182, now seen corresponding path program 1 times [2025-03-16 18:33:45,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:45,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518262750] [2025-03-16 18:33:45,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:45,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:45,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-16 18:33:45,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-16 18:33:45,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:45,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:33:46,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:46,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518262750] [2025-03-16 18:33:46,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518262750] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:46,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:46,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:33:46,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112686823] [2025-03-16 18:33:46,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:46,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:33:46,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:46,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:33:46,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:46,046 INFO L87 Difference]: Start difference. First operand 7921 states and 13538 transitions. Second operand has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-16 18:33:46,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:46,257 INFO L93 Difference]: Finished difference Result 11378 states and 19356 transitions. [2025-03-16 18:33:46,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:33:46,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 145 [2025-03-16 18:33:46,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:46,292 INFO L225 Difference]: With dead ends: 11378 [2025-03-16 18:33:46,292 INFO L226 Difference]: Without dead ends: 7956 [2025-03-16 18:33:46,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:33:46,306 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 115 mSDsluCounter, 4318 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 5202 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:46,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 5202 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:46,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7956 states. [2025-03-16 18:33:46,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7956 to 7921. [2025-03-16 18:33:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7921 states, 6180 states have (on average 1.6237864077669903) internal successors, (10035), 6347 states have internal predecessors, (10035), 1382 states have call successors, (1382), 265 states have call predecessors, (1382), 358 states have return successors, (2121), 1362 states have call predecessors, (2121), 1377 states have call successors, (2121) [2025-03-16 18:33:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 13538 transitions. [2025-03-16 18:33:46,601 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 13538 transitions. Word has length 145 [2025-03-16 18:33:46,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:46,601 INFO L471 AbstractCegarLoop]: Abstraction has 7921 states and 13538 transitions. [2025-03-16 18:33:46,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-16 18:33:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 13538 transitions. [2025-03-16 18:33:46,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-16 18:33:46,610 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:46,610 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:46,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-16 18:33:46,610 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:46,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:46,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1678247687, now seen corresponding path program 1 times [2025-03-16 18:33:46,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:46,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135126508] [2025-03-16 18:33:46,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:46,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:46,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-16 18:33:46,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-16 18:33:46,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:46,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-16 18:33:46,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:46,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135126508] [2025-03-16 18:33:46,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135126508] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:46,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:46,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:33:46,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246094335] [2025-03-16 18:33:46,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:46,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:46,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:46,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:46,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:33:46,682 INFO L87 Difference]: Start difference. First operand 7921 states and 13538 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:33:46,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:46,826 INFO L93 Difference]: Finished difference Result 11427 states and 19438 transitions. [2025-03-16 18:33:46,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:46,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 145 [2025-03-16 18:33:46,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:46,848 INFO L225 Difference]: With dead ends: 11427 [2025-03-16 18:33:46,849 INFO L226 Difference]: Without dead ends: 3516 [2025-03-16 18:33:46,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:33:46,872 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 8 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:46,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2654 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:46,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2025-03-16 18:33:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 3516. [2025-03-16 18:33:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 2765 states have (on average 1.6278481012658228) internal successors, (4501), 2840 states have internal predecessors, (4501), 589 states have call successors, (589), 136 states have call predecessors, (589), 161 states have return successors, (795), 561 states have call predecessors, (795), 584 states have call successors, (795) [2025-03-16 18:33:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 5885 transitions. [2025-03-16 18:33:46,976 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 5885 transitions. Word has length 145 [2025-03-16 18:33:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:46,977 INFO L471 AbstractCegarLoop]: Abstraction has 3516 states and 5885 transitions. [2025-03-16 18:33:46,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:33:46,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 5885 transitions. [2025-03-16 18:33:46,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-16 18:33:46,980 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:46,980 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:46,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-16 18:33:46,981 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:46,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:46,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1920471217, now seen corresponding path program 1 times [2025-03-16 18:33:46,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:46,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359885904] [2025-03-16 18:33:46,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:46,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:46,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-16 18:33:47,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-16 18:33:47,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:47,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 18:33:47,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:47,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359885904] [2025-03-16 18:33:47,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359885904] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:47,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:47,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:33:47,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072156471] [2025-03-16 18:33:47,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:47,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:33:47,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:47,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:33:47,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:47,188 INFO L87 Difference]: Start difference. First operand 3516 states and 5885 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-16 18:33:49,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:49,392 INFO L93 Difference]: Finished difference Result 12237 states and 21077 transitions. [2025-03-16 18:33:49,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-16 18:33:49,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 146 [2025-03-16 18:33:49,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:49,471 INFO L225 Difference]: With dead ends: 12237 [2025-03-16 18:33:49,471 INFO L226 Difference]: Without dead ends: 8826 [2025-03-16 18:33:49,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2025-03-16 18:33:49,483 INFO L435 NwaCegarLoop]: 414 mSDtfsCounter, 2374 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 3667 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2453 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 4167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 3667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:49,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2453 Valid, 1950 Invalid, 4167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 3667 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-16 18:33:49,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8826 states. [2025-03-16 18:33:49,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8826 to 8041. [2025-03-16 18:33:49,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8041 states, 6325 states have (on average 1.6382608695652174) internal successors, (10362), 6519 states have internal predecessors, (10362), 1322 states have call successors, (1322), 290 states have call predecessors, (1322), 393 states have return successors, (1905), 1275 states have call predecessors, (1905), 1317 states have call successors, (1905) [2025-03-16 18:33:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8041 states to 8041 states and 13589 transitions. [2025-03-16 18:33:49,834 INFO L78 Accepts]: Start accepts. Automaton has 8041 states and 13589 transitions. Word has length 146 [2025-03-16 18:33:49,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:49,843 INFO L471 AbstractCegarLoop]: Abstraction has 8041 states and 13589 transitions. [2025-03-16 18:33:49,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-16 18:33:49,843 INFO L276 IsEmpty]: Start isEmpty. Operand 8041 states and 13589 transitions. [2025-03-16 18:33:49,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 18:33:49,847 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:49,847 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:49,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-16 18:33:49,847 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:49,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:49,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2027929564, now seen corresponding path program 1 times [2025-03-16 18:33:49,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:49,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455087169] [2025-03-16 18:33:49,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:49,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:49,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 18:33:49,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 18:33:49,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:49,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 18:33:50,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:50,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455087169] [2025-03-16 18:33:50,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455087169] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:50,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:50,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 18:33:50,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21719641] [2025-03-16 18:33:50,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:50,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:33:50,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:50,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:33:50,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:33:50,007 INFO L87 Difference]: Start difference. First operand 8041 states and 13589 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:33:50,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:50,257 INFO L93 Difference]: Finished difference Result 16095 states and 27523 transitions. [2025-03-16 18:33:50,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:50,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2025-03-16 18:33:50,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:50,288 INFO L225 Difference]: With dead ends: 16095 [2025-03-16 18:33:50,288 INFO L226 Difference]: Without dead ends: 8159 [2025-03-16 18:33:50,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:33:50,307 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 0 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:50,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3382 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:50,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8159 states. [2025-03-16 18:33:50,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8159 to 8135. [2025-03-16 18:33:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8135 states, 6405 states have (on average 1.629352068696331) internal successors, (10436), 6583 states have internal predecessors, (10436), 1316 states have call successors, (1316), 290 states have call predecessors, (1316), 413 states have return successors, (1989), 1305 states have call predecessors, (1989), 1311 states have call successors, (1989) [2025-03-16 18:33:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8135 states to 8135 states and 13741 transitions. [2025-03-16 18:33:50,693 INFO L78 Accepts]: Start accepts. Automaton has 8135 states and 13741 transitions. Word has length 151 [2025-03-16 18:33:50,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:50,694 INFO L471 AbstractCegarLoop]: Abstraction has 8135 states and 13741 transitions. [2025-03-16 18:33:50,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:33:50,694 INFO L276 IsEmpty]: Start isEmpty. Operand 8135 states and 13741 transitions. [2025-03-16 18:33:50,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-16 18:33:50,698 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:50,698 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:50,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-03-16 18:33:50,699 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:50,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:50,699 INFO L85 PathProgramCache]: Analyzing trace with hash -462914186, now seen corresponding path program 1 times [2025-03-16 18:33:50,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:50,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828575663] [2025-03-16 18:33:50,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:50,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:50,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-16 18:33:50,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-16 18:33:50,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:50,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 18:33:50,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:50,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828575663] [2025-03-16 18:33:50,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828575663] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:50,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:50,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 18:33:50,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734474210] [2025-03-16 18:33:50,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:50,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:33:50,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:50,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:33:50,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:33:50,883 INFO L87 Difference]: Start difference. First operand 8135 states and 13741 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 7 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2025-03-16 18:33:53,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:53,260 INFO L93 Difference]: Finished difference Result 25616 states and 44325 transitions. [2025-03-16 18:33:53,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:33:53,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 7 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 155 [2025-03-16 18:33:53,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:53,328 INFO L225 Difference]: With dead ends: 25616 [2025-03-16 18:33:53,328 INFO L226 Difference]: Without dead ends: 17566 [2025-03-16 18:33:53,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:53,353 INFO L435 NwaCegarLoop]: 614 mSDtfsCounter, 4932 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 2887 mSolverCounterSat, 1253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5079 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 4140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1253 IncrementalHoareTripleChecker+Valid, 2887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:53,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5079 Valid, 1589 Invalid, 4140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1253 Valid, 2887 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-16 18:33:53,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17566 states. [2025-03-16 18:33:54,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17566 to 17500. [2025-03-16 18:33:54,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17500 states, 13641 states have (on average 1.6153507807345502) internal successors, (22035), 14042 states have internal predecessors, (22035), 2937 states have call successors, (2937), 638 states have call predecessors, (2937), 921 states have return successors, (4945), 2929 states have call predecessors, (4945), 2932 states have call successors, (4945) [2025-03-16 18:33:54,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17500 states to 17500 states and 29917 transitions. [2025-03-16 18:33:54,178 INFO L78 Accepts]: Start accepts. Automaton has 17500 states and 29917 transitions. Word has length 155 [2025-03-16 18:33:54,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:54,179 INFO L471 AbstractCegarLoop]: Abstraction has 17500 states and 29917 transitions. [2025-03-16 18:33:54,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 7 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2025-03-16 18:33:54,179 INFO L276 IsEmpty]: Start isEmpty. Operand 17500 states and 29917 transitions. [2025-03-16 18:33:54,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-03-16 18:33:54,191 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:54,191 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:54,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-03-16 18:33:54,191 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:54,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1617354966, now seen corresponding path program 1 times [2025-03-16 18:33:54,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:54,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025406043] [2025-03-16 18:33:54,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:54,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:54,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-16 18:33:54,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-16 18:33:54,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:54,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:33:54,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025406043] [2025-03-16 18:33:54,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025406043] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630694711] [2025-03-16 18:33:54,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:54,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:54,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:54,399 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:54,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-16 18:33:54,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-16 18:33:54,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-16 18:33:54,755 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:54,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:54,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 2123 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:54,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:33:54,881 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:54,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630694711] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:54,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:54,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-16 18:33:54,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154060280] [2025-03-16 18:33:54,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:54,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:54,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:54,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:54,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:33:54,883 INFO L87 Difference]: Start difference. First operand 17500 states and 29917 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-16 18:33:55,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:55,721 INFO L93 Difference]: Finished difference Result 35072 states and 61895 transitions. [2025-03-16 18:33:55,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:55,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 158 [2025-03-16 18:33:55,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:55,824 INFO L225 Difference]: With dead ends: 35072 [2025-03-16 18:33:55,824 INFO L226 Difference]: Without dead ends: 17732 [2025-03-16 18:33:55,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:33:55,898 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 264 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:55,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 2468 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:55,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17732 states. [2025-03-16 18:33:56,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17732 to 17516. [2025-03-16 18:33:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17516 states, 13649 states have (on average 1.598871712213349) internal successors, (21823), 14058 states have internal predecessors, (21823), 2937 states have call successors, (2937), 638 states have call predecessors, (2937), 929 states have return successors, (4969), 2929 states have call predecessors, (4969), 2932 states have call successors, (4969) [2025-03-16 18:33:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17516 states to 17516 states and 29729 transitions. [2025-03-16 18:33:56,809 INFO L78 Accepts]: Start accepts. Automaton has 17516 states and 29729 transitions. Word has length 158 [2025-03-16 18:33:56,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:56,809 INFO L471 AbstractCegarLoop]: Abstraction has 17516 states and 29729 transitions. [2025-03-16 18:33:56,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-16 18:33:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 17516 states and 29729 transitions. [2025-03-16 18:33:56,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-03-16 18:33:56,814 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:56,814 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:56,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-16 18:33:57,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-03-16 18:33:57,014 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:57,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:57,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1063264359, now seen corresponding path program 1 times [2025-03-16 18:33:57,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:57,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959013855] [2025-03-16 18:33:57,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:57,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:57,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-16 18:33:57,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-16 18:33:57,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:57,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:57,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:57,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959013855] [2025-03-16 18:33:57,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959013855] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:57,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854645220] [2025-03-16 18:33:57,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:57,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:57,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:57,177 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:57,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-16 18:33:57,316 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-16 18:33:57,455 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-16 18:33:57,455 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:57,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:57,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 2139 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:57,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:33:57,486 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854645220] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:57,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:57,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-16 18:33:57,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249957940] [2025-03-16 18:33:57,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:57,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:57,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:57,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:57,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:33:57,487 INFO L87 Difference]: Start difference. First operand 17516 states and 29729 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-16 18:33:58,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:58,355 INFO L93 Difference]: Finished difference Result 35187 states and 61237 transitions. [2025-03-16 18:33:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:58,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 162 [2025-03-16 18:33:58,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:58,446 INFO L225 Difference]: With dead ends: 35187 [2025-03-16 18:33:58,446 INFO L226 Difference]: Without dead ends: 17688 [2025-03-16 18:33:58,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:33:58,505 INFO L435 NwaCegarLoop]: 831 mSDtfsCounter, 14 mSDsluCounter, 1628 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:58,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2459 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:58,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17688 states. [2025-03-16 18:33:59,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17688 to 17688. [2025-03-16 18:33:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17688 states, 13789 states have (on average 1.5829284212053085) internal successors, (21827), 14212 states have internal predecessors, (21827), 2937 states have call successors, (2937), 656 states have call predecessors, (2937), 961 states have return successors, (5001), 2929 states have call predecessors, (5001), 2932 states have call successors, (5001) [2025-03-16 18:33:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17688 states to 17688 states and 29765 transitions. [2025-03-16 18:33:59,302 INFO L78 Accepts]: Start accepts. Automaton has 17688 states and 29765 transitions. Word has length 162 [2025-03-16 18:33:59,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:59,302 INFO L471 AbstractCegarLoop]: Abstraction has 17688 states and 29765 transitions. [2025-03-16 18:33:59,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-16 18:33:59,302 INFO L276 IsEmpty]: Start isEmpty. Operand 17688 states and 29765 transitions. [2025-03-16 18:33:59,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-16 18:33:59,306 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:59,307 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:59,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-16 18:33:59,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-03-16 18:33:59,507 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:59,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:59,508 INFO L85 PathProgramCache]: Analyzing trace with hash -76161838, now seen corresponding path program 1 times [2025-03-16 18:33:59,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:59,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740874631] [2025-03-16 18:33:59,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:59,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:59,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-16 18:33:59,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-16 18:33:59,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:59,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-16 18:33:59,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:59,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740874631] [2025-03-16 18:33:59,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740874631] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:59,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:59,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:33:59,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405248390] [2025-03-16 18:33:59,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:59,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:33:59,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:59,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:33:59,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:59,695 INFO L87 Difference]: Start difference. First operand 17688 states and 29765 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2025-03-16 18:34:02,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:02,545 INFO L93 Difference]: Finished difference Result 35781 states and 61405 transitions. [2025-03-16 18:34:02,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-16 18:34:02,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 163 [2025-03-16 18:34:02,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:02,660 INFO L225 Difference]: With dead ends: 35781 [2025-03-16 18:34:02,660 INFO L226 Difference]: Without dead ends: 20443 [2025-03-16 18:34:02,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2025-03-16 18:34:02,720 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 2058 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 3183 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2134 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 3656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 3183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:02,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2134 Valid, 1698 Invalid, 3656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 3183 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-16 18:34:02,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20443 states. [2025-03-16 18:34:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20443 to 18346. [2025-03-16 18:34:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18346 states, 14275 states have (on average 1.5740105078809108) internal successors, (22469), 14738 states have internal predecessors, (22469), 3003 states have call successors, (3003), 716 states have call predecessors, (3003), 1067 states have return successors, (5315), 3001 states have call predecessors, (5315), 2998 states have call successors, (5315) [2025-03-16 18:34:03,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18346 states to 18346 states and 30787 transitions. [2025-03-16 18:34:03,571 INFO L78 Accepts]: Start accepts. Automaton has 18346 states and 30787 transitions. Word has length 163 [2025-03-16 18:34:03,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:03,571 INFO L471 AbstractCegarLoop]: Abstraction has 18346 states and 30787 transitions. [2025-03-16 18:34:03,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2025-03-16 18:34:03,572 INFO L276 IsEmpty]: Start isEmpty. Operand 18346 states and 30787 transitions. [2025-03-16 18:34:03,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-16 18:34:03,575 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:03,576 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:03,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-03-16 18:34:03,576 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:03,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:03,576 INFO L85 PathProgramCache]: Analyzing trace with hash -122269950, now seen corresponding path program 1 times [2025-03-16 18:34:03,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:03,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418421545] [2025-03-16 18:34:03,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:03,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:03,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-16 18:34:03,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-16 18:34:03,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:03,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-16 18:34:03,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:03,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418421545] [2025-03-16 18:34:03,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418421545] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:34:03,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244099936] [2025-03-16 18:34:03,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:03,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:34:03,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:34:03,714 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:34:03,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-16 18:34:03,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-16 18:34:04,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-16 18:34:04,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:04,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:04,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 2157 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 18:34:04,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:34:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 18:34:04,028 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:34:04,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244099936] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:04,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:34:04,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2025-03-16 18:34:04,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572522856] [2025-03-16 18:34:04,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:04,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:34:04,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:04,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:34:04,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:34:04,029 INFO L87 Difference]: Start difference. First operand 18346 states and 30787 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-16 18:34:04,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:04,866 INFO L93 Difference]: Finished difference Result 39605 states and 67848 transitions. [2025-03-16 18:34:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:34:04,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 168 [2025-03-16 18:34:04,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:04,994 INFO L225 Difference]: With dead ends: 39605 [2025-03-16 18:34:04,994 INFO L226 Difference]: Without dead ends: 23326 [2025-03-16 18:34:05,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:34:05,061 INFO L435 NwaCegarLoop]: 1370 mSDtfsCounter, 758 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:05,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 2206 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:05,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23326 states. [2025-03-16 18:34:06,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23326 to 21925. [2025-03-16 18:34:06,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21925 states, 17123 states have (on average 1.5757168720434502) internal successors, (26981), 17615 states have internal predecessors, (26981), 3560 states have call successors, (3560), 862 states have call predecessors, (3560), 1241 states have return successors, (6553), 3579 states have call predecessors, (6553), 3555 states have call successors, (6553) [2025-03-16 18:34:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21925 states to 21925 states and 37094 transitions. [2025-03-16 18:34:06,367 INFO L78 Accepts]: Start accepts. Automaton has 21925 states and 37094 transitions. Word has length 168 [2025-03-16 18:34:06,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:06,367 INFO L471 AbstractCegarLoop]: Abstraction has 21925 states and 37094 transitions. [2025-03-16 18:34:06,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-16 18:34:06,367 INFO L276 IsEmpty]: Start isEmpty. Operand 21925 states and 37094 transitions. [2025-03-16 18:34:06,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-16 18:34:06,372 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:06,372 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:06,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2025-03-16 18:34:06,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-16 18:34:06,572 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:06,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:06,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1339310049, now seen corresponding path program 1 times [2025-03-16 18:34:06,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:06,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217030347] [2025-03-16 18:34:06,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:06,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:06,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-16 18:34:06,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-16 18:34:06,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:06,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-16 18:34:06,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:06,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217030347] [2025-03-16 18:34:06,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217030347] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:06,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:06,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 18:34:06,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455057733] [2025-03-16 18:34:06,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:06,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:34:06,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:06,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:34:06,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:34:06,907 INFO L87 Difference]: Start difference. First operand 21925 states and 37094 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:34:09,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:09,417 INFO L93 Difference]: Finished difference Result 43915 states and 74624 transitions. [2025-03-16 18:34:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:34:09,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) Word has length 168 [2025-03-16 18:34:09,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:09,522 INFO L225 Difference]: With dead ends: 43915 [2025-03-16 18:34:09,522 INFO L226 Difference]: Without dead ends: 22087 [2025-03-16 18:34:09,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:34:09,585 INFO L435 NwaCegarLoop]: 407 mSDtfsCounter, 1251 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 2571 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 2571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:09,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 1721 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 2571 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-16 18:34:09,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22087 states. [2025-03-16 18:34:10,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22087 to 21969. [2025-03-16 18:34:10,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21969 states, 17145 states have (on average 1.5679206765820939) internal successors, (26882), 17659 states have internal predecessors, (26882), 3560 states have call successors, (3560), 862 states have call predecessors, (3560), 1263 states have return successors, (6729), 3579 states have call predecessors, (6729), 3555 states have call successors, (6729) [2025-03-16 18:34:10,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21969 states to 21969 states and 37171 transitions. [2025-03-16 18:34:10,564 INFO L78 Accepts]: Start accepts. Automaton has 21969 states and 37171 transitions. Word has length 168 [2025-03-16 18:34:10,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:10,564 INFO L471 AbstractCegarLoop]: Abstraction has 21969 states and 37171 transitions. [2025-03-16 18:34:10,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:34:10,564 INFO L276 IsEmpty]: Start isEmpty. Operand 21969 states and 37171 transitions. [2025-03-16 18:34:10,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-16 18:34:10,568 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:10,568 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:10,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-03-16 18:34:10,568 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:10,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:10,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2017491283, now seen corresponding path program 1 times [2025-03-16 18:34:10,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:10,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671859907] [2025-03-16 18:34:10,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:10,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:10,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-16 18:34:10,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-16 18:34:10,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:10,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:10,686 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-16 18:34:10,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:10,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671859907] [2025-03-16 18:34:10,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671859907] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:10,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:10,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 18:34:10,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348701285] [2025-03-16 18:34:10,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:10,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:34:10,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:10,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:34:10,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:34:10,687 INFO L87 Difference]: Start difference. First operand 21969 states and 37171 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:34:13,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:13,892 INFO L93 Difference]: Finished difference Result 63251 states and 111613 transitions. [2025-03-16 18:34:13,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:34:13,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 169 [2025-03-16 18:34:13,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:14,145 INFO L225 Difference]: With dead ends: 63251 [2025-03-16 18:34:14,145 INFO L226 Difference]: Without dead ends: 41405 [2025-03-16 18:34:14,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:34:14,396 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 2197 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 2287 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2294 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 2287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:14,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2294 Valid, 1363 Invalid, 2789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 2287 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 18:34:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41405 states. [2025-03-16 18:34:16,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41405 to 38558. [2025-03-16 18:34:16,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38558 states, 29576 states have (on average 1.5600148769272384) internal successors, (46139), 30659 states have internal predecessors, (46139), 6806 states have call successors, (6806), 1439 states have call predecessors, (6806), 2175 states have return successors, (13723), 6915 states have call predecessors, (13723), 6801 states have call successors, (13723) [2025-03-16 18:34:17,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38558 states to 38558 states and 66668 transitions. [2025-03-16 18:34:17,094 INFO L78 Accepts]: Start accepts. Automaton has 38558 states and 66668 transitions. Word has length 169 [2025-03-16 18:34:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:17,094 INFO L471 AbstractCegarLoop]: Abstraction has 38558 states and 66668 transitions. [2025-03-16 18:34:17,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:34:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 38558 states and 66668 transitions. [2025-03-16 18:34:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2025-03-16 18:34:17,101 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:17,101 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:17,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-03-16 18:34:17,102 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:17,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:17,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1943174544, now seen corresponding path program 1 times [2025-03-16 18:34:17,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:17,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991659176] [2025-03-16 18:34:17,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:17,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:17,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 179 statements into 1 equivalence classes. [2025-03-16 18:34:17,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 179 of 179 statements. [2025-03-16 18:34:17,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:17,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:17,425 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-16 18:34:17,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:17,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991659176] [2025-03-16 18:34:17,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991659176] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:34:17,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297555640] [2025-03-16 18:34:17,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:17,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:34:17,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:34:17,428 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:34:17,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-16 18:34:17,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 179 statements into 1 equivalence classes. [2025-03-16 18:34:17,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 179 of 179 statements. [2025-03-16 18:34:17,728 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:17,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:17,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 2204 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-16 18:34:17,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:34:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-16 18:34:17,903 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:34:17,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297555640] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:17,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:34:17,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2025-03-16 18:34:17,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318116317] [2025-03-16 18:34:17,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:17,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:34:17,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:17,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:34:17,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2025-03-16 18:34:17,904 INFO L87 Difference]: Start difference. First operand 38558 states and 66668 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-16 18:34:21,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:21,890 INFO L93 Difference]: Finished difference Result 79456 states and 141011 transitions. [2025-03-16 18:34:21,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 18:34:21,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 179 [2025-03-16 18:34:21,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:22,181 INFO L225 Difference]: With dead ends: 79456 [2025-03-16 18:34:22,181 INFO L226 Difference]: Without dead ends: 43795 [2025-03-16 18:34:22,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2025-03-16 18:34:22,370 INFO L435 NwaCegarLoop]: 511 mSDtfsCounter, 1814 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 3553 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 3925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 3553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:22,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1898 Valid, 2402 Invalid, 3925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 3553 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-16 18:34:22,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43795 states. [2025-03-16 18:34:24,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43795 to 39545. [2025-03-16 18:34:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39545 states, 30170 states have (on average 1.55512098110706) internal successors, (46918), 31364 states have internal predecessors, (46918), 7121 states have call successors, (7121), 1439 states have call predecessors, (7121), 2253 states have return successors, (15190), 7197 states have call predecessors, (15190), 7116 states have call successors, (15190) [2025-03-16 18:34:25,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39545 states to 39545 states and 69229 transitions. [2025-03-16 18:34:25,202 INFO L78 Accepts]: Start accepts. Automaton has 39545 states and 69229 transitions. Word has length 179 [2025-03-16 18:34:25,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:25,203 INFO L471 AbstractCegarLoop]: Abstraction has 39545 states and 69229 transitions. [2025-03-16 18:34:25,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-16 18:34:25,204 INFO L276 IsEmpty]: Start isEmpty. Operand 39545 states and 69229 transitions. [2025-03-16 18:34:25,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-16 18:34:25,209 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:25,209 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:25,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-16 18:34:25,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2025-03-16 18:34:25,410 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:25,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:25,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1897617289, now seen corresponding path program 1 times [2025-03-16 18:34:25,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:25,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458578348] [2025-03-16 18:34:25,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:25,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:25,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-16 18:34:25,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-16 18:34:25,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:25,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-16 18:34:25,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:25,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458578348] [2025-03-16 18:34:25,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458578348] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:25,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:25,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:25,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596208963] [2025-03-16 18:34:25,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:25,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:25,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:25,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:25,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:25,584 INFO L87 Difference]: Start difference. First operand 39545 states and 69229 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-16 18:34:31,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:31,129 INFO L93 Difference]: Finished difference Result 120664 states and 221564 transitions. [2025-03-16 18:34:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:34:31,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 177 [2025-03-16 18:34:31,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:31,857 INFO L225 Difference]: With dead ends: 120664 [2025-03-16 18:34:31,857 INFO L226 Difference]: Without dead ends: 81218 [2025-03-16 18:34:32,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:34:32,189 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 1938 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:32,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 368 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-16 18:34:32,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81218 states.