/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 08:46:36,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 08:46:36,377 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 08:46:36,381 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 08:46:36,381 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 08:46:36,410 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 08:46:36,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 08:46:36,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 08:46:36,412 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 08:46:36,415 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 08:46:36,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 08:46:36,415 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 08:46:36,416 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 08:46:36,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 08:46:36,417 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 08:46:36,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 08:46:36,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 08:46:36,418 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 08:46:36,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 08:46:36,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 08:46:36,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 08:46:36,419 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 08:46:36,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 08:46:36,420 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 08:46:36,420 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 08:46:36,420 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 08:46:36,420 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 08:46:36,420 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 08:46:36,421 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 08:46:36,421 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 08:46:36,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 08:46:36,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 08:46:36,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 08:46:36,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 08:46:36,422 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 08:46:36,422 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 08:46:36,423 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 08:46:36,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 08:46:36,423 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 08:46:36,423 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 08:46:36,423 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 08:46:36,423 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 08:46:36,423 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 08:46:36,423 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 08:46:36,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 08:46:36,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 08:46:36,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 08:46:36,650 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 08:46:36,652 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 08:46:36,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product17.cil.c [2023-12-21 08:46:37,771 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 08:46:38,053 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 08:46:38,053 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product17.cil.c [2023-12-21 08:46:38,065 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1120e7b12/2c865b634c0d48eb8f362739a1f7188b/FLAG34faa3836 [2023-12-21 08:46:38,078 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1120e7b12/2c865b634c0d48eb8f362739a1f7188b [2023-12-21 08:46:38,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 08:46:38,081 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 08:46:38,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 08:46:38,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 08:46:38,086 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 08:46:38,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:46:38" (1/1) ... [2023-12-21 08:46:38,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@caefe4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:38, skipping insertion in model container [2023-12-21 08:46:38,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:46:38" (1/1) ... [2023-12-21 08:46:38,144 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 08:46:38,306 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product17.cil.c[27470,27483] [2023-12-21 08:46:38,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 08:46:38,498 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 08:46:38,505 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2023-12-21 08:46:38,506 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [721] [2023-12-21 08:46:38,506 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1087] [2023-12-21 08:46:38,506 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1103] [2023-12-21 08:46:38,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1112] [2023-12-21 08:46:38,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1150] [2023-12-21 08:46:38,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [2604] [2023-12-21 08:46:38,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2785] [2023-12-21 08:46:38,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2878] [2023-12-21 08:46:38,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3228] [2023-12-21 08:46:38,571 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product17.cil.c[27470,27483] [2023-12-21 08:46:38,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 08:46:38,675 INFO L206 MainTranslator]: Completed translation [2023-12-21 08:46:38,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:38 WrapperNode [2023-12-21 08:46:38,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 08:46:38,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 08:46:38,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 08:46:38,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 08:46:38,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:38" (1/1) ... [2023-12-21 08:46:38,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:38" (1/1) ... [2023-12-21 08:46:38,761 INFO L138 Inliner]: procedures = 90, calls = 333, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 790 [2023-12-21 08:46:38,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 08:46:38,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 08:46:38,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 08:46:38,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 08:46:38,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:38" (1/1) ... [2023-12-21 08:46:38,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:38" (1/1) ... [2023-12-21 08:46:38,785 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:38" (1/1) ... [2023-12-21 08:46:38,818 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-12-21 08:46:38,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:38" (1/1) ... [2023-12-21 08:46:38,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:38" (1/1) ... [2023-12-21 08:46:38,830 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:38" (1/1) ... [2023-12-21 08:46:38,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:38" (1/1) ... [2023-12-21 08:46:38,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:38" (1/1) ... [2023-12-21 08:46:38,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:38" (1/1) ... [2023-12-21 08:46:38,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 08:46:38,865 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 08:46:38,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 08:46:38,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 08:46:38,866 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:38" (1/1) ... [2023-12-21 08:46:38,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 08:46:38,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:46:38,914 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) [2023-12-21 08:46:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-12-21 08:46:38,958 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-12-21 08:46:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 08:46:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-21 08:46:38,958 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-21 08:46:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-12-21 08:46:38,958 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-12-21 08:46:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-21 08:46:38,959 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-21 08:46:38,959 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-21 08:46:38,959 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-21 08:46:38,959 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-21 08:46:38,959 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-21 08:46:38,959 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-21 08:46:38,959 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-21 08:46:38,960 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-21 08:46:38,960 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-21 08:46:38,960 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-12-21 08:46:38,961 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-12-21 08:46:38,962 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-21 08:46:38,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-21 08:46:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-21 08:46:38,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-21 08:46:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-21 08:46:38,963 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-21 08:46:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-21 08:46:38,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-21 08:46:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-21 08:46:38,963 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-21 08:46:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-21 08:46:38,963 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-21 08:46:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-21 08:46:38,963 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-21 08:46:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-21 08:46:38,963 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-21 08:46:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-21 08:46:38,963 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-21 08:46:38,951 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 [2023-12-21 08:46:38,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 08:46:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 08:46:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 08:46:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 08:46:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-21 08:46:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-21 08:46:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-21 08:46:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-21 08:46:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-21 08:46:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-21 08:46:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-21 08:46:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-21 08:46:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-21 08:46:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-21 08:46:38,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-21 08:46:38,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-21 08:46:38,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-21 08:46:38,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-21 08:46:38,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-21 08:46:38,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-21 08:46:38,966 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-21 08:46:38,966 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-21 08:46:38,966 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-21 08:46:38,966 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-21 08:46:38,966 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-21 08:46:38,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-21 08:46:38,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 08:46:38,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 08:46:38,967 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-21 08:46:38,967 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-21 08:46:39,120 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 08:46:39,123 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 08:46:39,777 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 08:46:39,846 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 08:46:39,847 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 08:46:39,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:46:39 BoogieIcfgContainer [2023-12-21 08:46:39,847 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 08:46:39,849 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 08:46:39,849 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 08:46:39,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 08:46:39,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:46:38" (1/3) ... [2023-12-21 08:46:39,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9a7b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:46:39, skipping insertion in model container [2023-12-21 08:46:39,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:38" (2/3) ... [2023-12-21 08:46:39,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9a7b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:46:39, skipping insertion in model container [2023-12-21 08:46:39,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:46:39" (3/3) ... [2023-12-21 08:46:39,853 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product17.cil.c [2023-12-21 08:46:39,865 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 08:46:39,865 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 08:46:39,914 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 08:46:39,919 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ca5d8b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 08:46:39,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 08:46:39,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 518 states, 403 states have (on average 1.7419354838709677) internal successors, (702), 424 states have internal predecessors, (702), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-21 08:46:39,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 08:46:39,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:46:39,955 INFO L195 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] [2023-12-21 08:46:39,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:46:39,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:46:39,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1182730314, now seen corresponding path program 1 times [2023-12-21 08:46:39,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:46:39,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760531441] [2023-12-21 08:46:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:46:39,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:46:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:46:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:46:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:46:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:46:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 08:46:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:41,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:41,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:41,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:46:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:41,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 08:46:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 08:46:41,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:46:41,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760531441] [2023-12-21 08:46:41,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760531441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:46:41,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:46:41,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 08:46:41,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461298126] [2023-12-21 08:46:41,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:46:41,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 08:46:41,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:46:41,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 08:46:41,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:46:41,199 INFO L87 Difference]: Start difference. First operand has 518 states, 403 states have (on average 1.7419354838709677) internal successors, (702), 424 states have internal predecessors, (702), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 08:46:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:46:47,947 INFO L93 Difference]: Finished difference Result 1318 states and 2294 transitions. [2023-12-21 08:46:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 08:46:47,950 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2023-12-21 08:46:47,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:46:47,985 INFO L225 Difference]: With dead ends: 1318 [2023-12-21 08:46:47,985 INFO L226 Difference]: Without dead ends: 800 [2023-12-21 08:46:47,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-12-21 08:46:47,998 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 975 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 5674 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 5905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 5674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-21 08:46:48,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 3077 Invalid, 5905 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [231 Valid, 5674 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-21 08:46:48,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2023-12-21 08:46:48,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 518. [2023-12-21 08:46:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 404 states have (on average 1.7252475247524752) internal successors, (697), 423 states have internal predecessors, (697), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (88), 85 states have call predecessors, (88), 86 states have call successors, (88) [2023-12-21 08:46:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 876 transitions. [2023-12-21 08:46:48,220 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 876 transitions. Word has length 87 [2023-12-21 08:46:48,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:46:48,221 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 876 transitions. [2023-12-21 08:46:48,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 08:46:48,221 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 876 transitions. [2023-12-21 08:46:48,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 08:46:48,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:46:48,227 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:46:48,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 08:46:48,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:46:48,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:46:48,228 INFO L85 PathProgramCache]: Analyzing trace with hash -608669560, now seen corresponding path program 1 times [2023-12-21 08:46:48,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:46:48,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493609741] [2023-12-21 08:46:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:46:48,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:46:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:48,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:46:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:48,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:48,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:46:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:48,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:46:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:48,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:46:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 08:46:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:48,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:48,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:48,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:46:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:48,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:46:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 08:46:48,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:46:48,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493609741] [2023-12-21 08:46:48,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493609741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:46:48,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:46:48,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 08:46:48,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751505981] [2023-12-21 08:46:48,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:46:48,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 08:46:48,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:46:48,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 08:46:48,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:46:48,934 INFO L87 Difference]: Start difference. First operand 518 states and 876 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 08:47:00,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:00,951 INFO L93 Difference]: Finished difference Result 2395 states and 4278 transitions. [2023-12-21 08:47:00,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 08:47:00,951 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 94 [2023-12-21 08:47:00,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:00,968 INFO L225 Difference]: With dead ends: 2395 [2023-12-21 08:47:00,968 INFO L226 Difference]: Without dead ends: 1880 [2023-12-21 08:47:00,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2023-12-21 08:47:00,974 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 3556 mSDsluCounter, 3300 mSDsCounter, 0 mSdLazyCounter, 6828 mSolverCounterSat, 1128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3635 SdHoareTripleChecker+Valid, 3828 SdHoareTripleChecker+Invalid, 7956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1128 IncrementalHoareTripleChecker+Valid, 6828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:00,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3635 Valid, 3828 Invalid, 7956 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1128 Valid, 6828 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-12-21 08:47:00,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2023-12-21 08:47:01,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1343. [2023-12-21 08:47:01,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1038 states have (on average 1.6801541425818882) internal successors, (1744), 1085 states have internal predecessors, (1744), 244 states have call successors, (244), 57 states have call predecessors, (244), 60 states have return successors, (278), 236 states have call predecessors, (278), 239 states have call successors, (278) [2023-12-21 08:47:01,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 2266 transitions. [2023-12-21 08:47:01,208 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 2266 transitions. Word has length 94 [2023-12-21 08:47:01,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:01,209 INFO L495 AbstractCegarLoop]: Abstraction has 1343 states and 2266 transitions. [2023-12-21 08:47:01,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 08:47:01,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 2266 transitions. [2023-12-21 08:47:01,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 08:47:01,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:01,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:01,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 08:47:01,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:01,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:01,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1807146551, now seen corresponding path program 1 times [2023-12-21 08:47:01,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:01,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952675834] [2023-12-21 08:47:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:01,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:01,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:01,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:01,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:01,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 08:47:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:01,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:01,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:01,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 08:47:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:01,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:01,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:01,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:01,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:01,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:01,975 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 08:47:01,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:01,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952675834] [2023-12-21 08:47:01,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952675834] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113357635] [2023-12-21 08:47:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:01,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:01,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:02,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:02,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 08:47:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:02,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:47:02,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 08:47:02,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:02,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113357635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:02,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:02,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-12-21 08:47:02,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673819257] [2023-12-21 08:47:02,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:02,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:47:02,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:02,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:47:02,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:47:02,404 INFO L87 Difference]: Start difference. First operand 1343 states and 2266 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:02,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:02,671 INFO L93 Difference]: Finished difference Result 2690 states and 4539 transitions. [2023-12-21 08:47:02,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:47:02,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2023-12-21 08:47:02,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:02,677 INFO L225 Difference]: With dead ends: 2690 [2023-12-21 08:47:02,678 INFO L226 Difference]: Without dead ends: 1352 [2023-12-21 08:47:02,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:47:02,684 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 20 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:02,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2528 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:47:02,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2023-12-21 08:47:02,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1352. [2023-12-21 08:47:02,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1046 states have (on average 1.678776290630975) internal successors, (1756), 1093 states have internal predecessors, (1756), 244 states have call successors, (244), 58 states have call predecessors, (244), 61 states have return successors, (278), 236 states have call predecessors, (278), 239 states have call successors, (278) [2023-12-21 08:47:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2278 transitions. [2023-12-21 08:47:02,859 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2278 transitions. Word has length 103 [2023-12-21 08:47:02,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:02,860 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 2278 transitions. [2023-12-21 08:47:02,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:02,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2278 transitions. [2023-12-21 08:47:02,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 08:47:02,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:02,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:02,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 08:47:03,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:03,077 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:03,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:03,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1842140078, now seen corresponding path program 1 times [2023-12-21 08:47:03,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:03,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826344062] [2023-12-21 08:47:03,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:03,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:03,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:03,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 08:47:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:03,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:47:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:03,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:03,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 08:47:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:03,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:03,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:03,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:03,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:03,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 08:47:03,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:03,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826344062] [2023-12-21 08:47:03,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826344062] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:03,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27133613] [2023-12-21 08:47:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:03,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:03,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:03,736 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:03,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 08:47:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:04,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:47:04,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 08:47:04,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:04,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27133613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:04,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:04,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-12-21 08:47:04,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257559320] [2023-12-21 08:47:04,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:04,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:47:04,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:04,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:47:04,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:47:04,081 INFO L87 Difference]: Start difference. First operand 1352 states and 2278 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:04,323 INFO L93 Difference]: Finished difference Result 2692 states and 4540 transitions. [2023-12-21 08:47:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:47:04,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2023-12-21 08:47:04,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:04,330 INFO L225 Difference]: With dead ends: 2692 [2023-12-21 08:47:04,330 INFO L226 Difference]: Without dead ends: 1352 [2023-12-21 08:47:04,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:47:04,335 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 18 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:04,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2528 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:04,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2023-12-21 08:47:04,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1352. [2023-12-21 08:47:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1046 states have (on average 1.6778202676864244) internal successors, (1755), 1093 states have internal predecessors, (1755), 244 states have call successors, (244), 58 states have call predecessors, (244), 61 states have return successors, (278), 236 states have call predecessors, (278), 239 states have call successors, (278) [2023-12-21 08:47:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2277 transitions. [2023-12-21 08:47:04,510 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2277 transitions. Word has length 104 [2023-12-21 08:47:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:04,511 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 2277 transitions. [2023-12-21 08:47:04,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2277 transitions. [2023-12-21 08:47:04,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 08:47:04,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:04,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:04,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:04,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-21 08:47:04,728 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:04,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:04,728 INFO L85 PathProgramCache]: Analyzing trace with hash -224168979, now seen corresponding path program 1 times [2023-12-21 08:47:04,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:04,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710578106] [2023-12-21 08:47:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:04,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:04,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:04,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:04,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:04,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 08:47:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:04,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:04,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:05,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 08:47:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:05,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:05,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:05,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:05,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:05,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 08:47:05,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:05,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710578106] [2023-12-21 08:47:05,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710578106] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:05,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721055226] [2023-12-21 08:47:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:05,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:05,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:05,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:05,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 08:47:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:05,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:47:05,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 08:47:05,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:05,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721055226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:05,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:05,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-12-21 08:47:05,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35689175] [2023-12-21 08:47:05,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:05,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:47:05,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:05,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:47:05,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:47:05,783 INFO L87 Difference]: Start difference. First operand 1352 states and 2277 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:06,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:06,031 INFO L93 Difference]: Finished difference Result 2692 states and 4539 transitions. [2023-12-21 08:47:06,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:47:06,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2023-12-21 08:47:06,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:06,038 INFO L225 Difference]: With dead ends: 2692 [2023-12-21 08:47:06,038 INFO L226 Difference]: Without dead ends: 1352 [2023-12-21 08:47:06,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:47:06,042 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 17 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:06,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2528 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:47:06,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2023-12-21 08:47:06,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1352. [2023-12-21 08:47:06,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1046 states have (on average 1.6768642447418738) internal successors, (1754), 1093 states have internal predecessors, (1754), 244 states have call successors, (244), 58 states have call predecessors, (244), 61 states have return successors, (278), 236 states have call predecessors, (278), 239 states have call successors, (278) [2023-12-21 08:47:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2276 transitions. [2023-12-21 08:47:06,217 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2276 transitions. Word has length 105 [2023-12-21 08:47:06,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:06,217 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 2276 transitions. [2023-12-21 08:47:06,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:06,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2276 transitions. [2023-12-21 08:47:06,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 08:47:06,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:06,219 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:06,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 08:47:06,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:06,429 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:06,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:06,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1096097974, now seen corresponding path program 1 times [2023-12-21 08:47:06,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:06,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888861715] [2023-12-21 08:47:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:06,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:06,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:06,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:06,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 08:47:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:06,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:06,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:07,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 08:47:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:07,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:07,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:07,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:07,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:07,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 08:47:07,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:07,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888861715] [2023-12-21 08:47:07,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888861715] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:07,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604467075] [2023-12-21 08:47:07,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:07,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:07,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:07,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:07,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 08:47:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:07,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:47:07,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 08:47:07,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:07,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604467075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:07,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:07,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-21 08:47:07,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25755513] [2023-12-21 08:47:07,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:07,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:47:07,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:07,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:47:07,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-21 08:47:07,477 INFO L87 Difference]: Start difference. First operand 1352 states and 2276 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:07,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:07,735 INFO L93 Difference]: Finished difference Result 2710 states and 4568 transitions. [2023-12-21 08:47:07,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:47:07,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2023-12-21 08:47:07,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:07,742 INFO L225 Difference]: With dead ends: 2710 [2023-12-21 08:47:07,743 INFO L226 Difference]: Without dead ends: 1374 [2023-12-21 08:47:07,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:47:07,748 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 146 mSDsluCounter, 4124 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 4970 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:07,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 4970 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:07,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2023-12-21 08:47:07,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1370. [2023-12-21 08:47:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1061 states have (on average 1.6767200754005656) internal successors, (1779), 1110 states have internal predecessors, (1779), 245 states have call successors, (245), 58 states have call predecessors, (245), 63 states have return successors, (282), 237 states have call predecessors, (282), 240 states have call successors, (282) [2023-12-21 08:47:07,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2306 transitions. [2023-12-21 08:47:07,952 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2306 transitions. Word has length 106 [2023-12-21 08:47:07,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:07,953 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 2306 transitions. [2023-12-21 08:47:07,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:07,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2306 transitions. [2023-12-21 08:47:07,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 08:47:07,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:07,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:07,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:08,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:08,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:08,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:08,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1771790583, now seen corresponding path program 1 times [2023-12-21 08:47:08,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:08,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411926921] [2023-12-21 08:47:08,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:08,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:08,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:08,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:08,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:08,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 08:47:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:08,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:08,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:08,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 08:47:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:08,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:08,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:08,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:08,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:08,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 08:47:08,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:08,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411926921] [2023-12-21 08:47:08,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411926921] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:08,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654305904] [2023-12-21 08:47:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:08,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:08,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:08,797 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:08,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 08:47:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:09,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:47:09,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:09,144 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 08:47:09,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:09,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654305904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:09,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:09,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:47:09,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634500595] [2023-12-21 08:47:09,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:09,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:47:09,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:09,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:47:09,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:47:09,146 INFO L87 Difference]: Start difference. First operand 1370 states and 2306 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:09,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:09,458 INFO L93 Difference]: Finished difference Result 2748 states and 4639 transitions. [2023-12-21 08:47:09,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 08:47:09,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2023-12-21 08:47:09,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:09,465 INFO L225 Difference]: With dead ends: 2748 [2023-12-21 08:47:09,465 INFO L226 Difference]: Without dead ends: 1370 [2023-12-21 08:47:09,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:47:09,470 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 133 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:09,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 2347 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2023-12-21 08:47:09,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1370. [2023-12-21 08:47:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1061 states have (on average 1.6720075400565504) internal successors, (1774), 1110 states have internal predecessors, (1774), 245 states have call successors, (245), 58 states have call predecessors, (245), 63 states have return successors, (282), 237 states have call predecessors, (282), 240 states have call successors, (282) [2023-12-21 08:47:09,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2301 transitions. [2023-12-21 08:47:09,666 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2301 transitions. Word has length 106 [2023-12-21 08:47:09,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:09,666 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 2301 transitions. [2023-12-21 08:47:09,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2301 transitions. [2023-12-21 08:47:09,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 08:47:09,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:09,668 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:09,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:09,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:09,875 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:09,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:09,876 INFO L85 PathProgramCache]: Analyzing trace with hash 852154565, now seen corresponding path program 1 times [2023-12-21 08:47:09,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:09,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021013391] [2023-12-21 08:47:09,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:09,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:10,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:10,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:10,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:10,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:47:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:10,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:10,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:10,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 08:47:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:10,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:10,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:10,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:10,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:10,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 08:47:10,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:10,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021013391] [2023-12-21 08:47:10,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021013391] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:10,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497621119] [2023-12-21 08:47:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:10,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:10,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:10,446 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:10,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 08:47:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:10,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 1795 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:47:10,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 08:47:10,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:10,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497621119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:10,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:10,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:47:10,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148878798] [2023-12-21 08:47:10,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:10,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:47:10,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:10,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:47:10,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:47:10,776 INFO L87 Difference]: Start difference. First operand 1370 states and 2301 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:11,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:11,077 INFO L93 Difference]: Finished difference Result 2748 states and 4629 transitions. [2023-12-21 08:47:11,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 08:47:11,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2023-12-21 08:47:11,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:11,083 INFO L225 Difference]: With dead ends: 2748 [2023-12-21 08:47:11,083 INFO L226 Difference]: Without dead ends: 1370 [2023-12-21 08:47:11,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:47:11,088 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 127 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:11,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2347 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:11,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2023-12-21 08:47:11,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1370. [2023-12-21 08:47:11,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1061 states have (on average 1.6672950047125354) internal successors, (1769), 1110 states have internal predecessors, (1769), 245 states have call successors, (245), 58 states have call predecessors, (245), 63 states have return successors, (282), 237 states have call predecessors, (282), 240 states have call successors, (282) [2023-12-21 08:47:11,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2296 transitions. [2023-12-21 08:47:11,255 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2296 transitions. Word has length 108 [2023-12-21 08:47:11,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:11,255 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 2296 transitions. [2023-12-21 08:47:11,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:11,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2296 transitions. [2023-12-21 08:47:11,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 08:47:11,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:11,257 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:11,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:11,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:11,466 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:11,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:11,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1357826541, now seen corresponding path program 1 times [2023-12-21 08:47:11,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:11,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223903657] [2023-12-21 08:47:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:11,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:11,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:11,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:11,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:11,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 08:47:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:11,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:11,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:12,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 08:47:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:12,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:12,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:12,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:12,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:12,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 08:47:12,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223903657] [2023-12-21 08:47:12,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223903657] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249843176] [2023-12-21 08:47:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:12,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:12,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:12,082 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:12,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 08:47:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:12,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 1797 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:47:12,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:12,399 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 08:47:12,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:12,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249843176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:12,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:12,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:47:12,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260020923] [2023-12-21 08:47:12,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:12,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:47:12,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:12,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:47:12,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:47:12,400 INFO L87 Difference]: Start difference. First operand 1370 states and 2296 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:12,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:12,724 INFO L93 Difference]: Finished difference Result 2784 states and 4677 transitions. [2023-12-21 08:47:12,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:47:12,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2023-12-21 08:47:12,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:12,730 INFO L225 Difference]: With dead ends: 2784 [2023-12-21 08:47:12,730 INFO L226 Difference]: Without dead ends: 1434 [2023-12-21 08:47:12,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:47:12,735 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 177 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:12,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2357 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:12,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2023-12-21 08:47:12,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1420. [2023-12-21 08:47:12,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1110 states have (on average 1.6693693693693694) internal successors, (1853), 1159 states have internal predecessors, (1853), 245 states have call successors, (245), 59 states have call predecessors, (245), 64 states have return successors, (281), 237 states have call predecessors, (281), 240 states have call successors, (281) [2023-12-21 08:47:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 2379 transitions. [2023-12-21 08:47:12,918 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 2379 transitions. Word has length 110 [2023-12-21 08:47:12,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:12,918 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 2379 transitions. [2023-12-21 08:47:12,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:12,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 2379 transitions. [2023-12-21 08:47:12,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 08:47:12,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:12,920 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:12,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-21 08:47:13,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:13,128 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:13,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:13,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1429303145, now seen corresponding path program 1 times [2023-12-21 08:47:13,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:13,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759169021] [2023-12-21 08:47:13,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:13,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:13,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:13,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:13,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:13,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:13,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:13,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:47:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:13,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:13,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:13,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:13,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:13,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 08:47:13,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:13,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759169021] [2023-12-21 08:47:13,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759169021] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:13,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222358034] [2023-12-21 08:47:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:13,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:13,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:13,720 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:13,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 08:47:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:14,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 1795 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:47:14,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 08:47:14,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:14,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222358034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:14,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:14,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-12-21 08:47:14,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348368511] [2023-12-21 08:47:14,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:14,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:47:14,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:14,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:47:14,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:47:14,093 INFO L87 Difference]: Start difference. First operand 1420 states and 2379 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:14,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:14,500 INFO L93 Difference]: Finished difference Result 2776 states and 4657 transitions. [2023-12-21 08:47:14,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:47:14,501 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2023-12-21 08:47:14,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:14,506 INFO L225 Difference]: With dead ends: 2776 [2023-12-21 08:47:14,506 INFO L226 Difference]: Without dead ends: 1440 [2023-12-21 08:47:14,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-12-21 08:47:14,510 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 171 mSDsluCounter, 4858 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 5684 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:14,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 5684 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:14,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2023-12-21 08:47:14,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1420. [2023-12-21 08:47:14,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1110 states have (on average 1.6693693693693694) internal successors, (1853), 1159 states have internal predecessors, (1853), 245 states have call successors, (245), 59 states have call predecessors, (245), 64 states have return successors, (281), 237 states have call predecessors, (281), 240 states have call successors, (281) [2023-12-21 08:47:14,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 2379 transitions. [2023-12-21 08:47:14,721 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 2379 transitions. Word has length 111 [2023-12-21 08:47:14,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:14,721 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 2379 transitions. [2023-12-21 08:47:14,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:14,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 2379 transitions. [2023-12-21 08:47:14,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 08:47:14,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:14,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:14,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:14,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 08:47:14,931 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:14,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash -464925559, now seen corresponding path program 1 times [2023-12-21 08:47:14,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:14,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773817166] [2023-12-21 08:47:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:14,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:15,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:15,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:15,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:15,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:15,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:15,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:47:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:15,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:15,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:15,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:15,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:15,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 08:47:15,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:15,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773817166] [2023-12-21 08:47:15,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773817166] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:15,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590879692] [2023-12-21 08:47:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:15,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:15,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:15,458 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:15,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 08:47:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:15,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 1798 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:47:15,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:15,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 08:47:15,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:15,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590879692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:15,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:15,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:47:15,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958776224] [2023-12-21 08:47:15,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:15,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:47:15,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:15,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:47:15,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:47:15,802 INFO L87 Difference]: Start difference. First operand 1420 states and 2379 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:16,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:16,104 INFO L93 Difference]: Finished difference Result 2784 states and 4675 transitions. [2023-12-21 08:47:16,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:47:16,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2023-12-21 08:47:16,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:16,112 INFO L225 Difference]: With dead ends: 2784 [2023-12-21 08:47:16,112 INFO L226 Difference]: Without dead ends: 1420 [2023-12-21 08:47:16,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:47:16,118 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 171 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:16,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2357 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:16,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2023-12-21 08:47:16,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1420. [2023-12-21 08:47:16,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1110 states have (on average 1.664864864864865) internal successors, (1848), 1159 states have internal predecessors, (1848), 245 states have call successors, (245), 59 states have call predecessors, (245), 64 states have return successors, (281), 237 states have call predecessors, (281), 240 states have call successors, (281) [2023-12-21 08:47:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 2374 transitions. [2023-12-21 08:47:16,343 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 2374 transitions. Word has length 111 [2023-12-21 08:47:16,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:16,344 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 2374 transitions. [2023-12-21 08:47:16,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:16,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 2374 transitions. [2023-12-21 08:47:16,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 08:47:16,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:16,347 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:16,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:16,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:16,555 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:16,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:16,555 INFO L85 PathProgramCache]: Analyzing trace with hash 230567880, now seen corresponding path program 1 times [2023-12-21 08:47:16,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:16,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095744719] [2023-12-21 08:47:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:16,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:16,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:16,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:16,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:16,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:16,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:16,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:17,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:47:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:17,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:17,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:17,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:17,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:17,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:47:17,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:17,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095744719] [2023-12-21 08:47:17,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095744719] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:17,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428244696] [2023-12-21 08:47:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:17,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:17,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:17,173 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:17,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 08:47:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:17,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:47:17,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 08:47:17,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:17,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428244696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:17,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:17,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-21 08:47:17,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438602973] [2023-12-21 08:47:17,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:17,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:47:17,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:17,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:47:17,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:47:17,554 INFO L87 Difference]: Start difference. First operand 1420 states and 2374 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:17,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:17,819 INFO L93 Difference]: Finished difference Result 2712 states and 4550 transitions. [2023-12-21 08:47:17,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:47:17,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2023-12-21 08:47:17,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:17,826 INFO L225 Difference]: With dead ends: 2712 [2023-12-21 08:47:17,826 INFO L226 Difference]: Without dead ends: 1442 [2023-12-21 08:47:17,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:47:17,831 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 132 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 4929 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:17,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 4929 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:17,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2023-12-21 08:47:18,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1438. [2023-12-21 08:47:18,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1125 states have (on average 1.6648888888888889) internal successors, (1873), 1176 states have internal predecessors, (1873), 246 states have call successors, (246), 59 states have call predecessors, (246), 66 states have return successors, (284), 238 states have call predecessors, (284), 241 states have call successors, (284) [2023-12-21 08:47:18,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2403 transitions. [2023-12-21 08:47:18,055 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2403 transitions. Word has length 111 [2023-12-21 08:47:18,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:18,055 INFO L495 AbstractCegarLoop]: Abstraction has 1438 states and 2403 transitions. [2023-12-21 08:47:18,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:18,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2403 transitions. [2023-12-21 08:47:18,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 08:47:18,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:18,058 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:18,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:18,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-21 08:47:18,265 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:18,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:18,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1180928059, now seen corresponding path program 1 times [2023-12-21 08:47:18,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:18,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594760113] [2023-12-21 08:47:18,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:18,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:18,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:18,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:18,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:18,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:18,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:18,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 08:47:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:18,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:18,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:18,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:18,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:47:18,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:18,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594760113] [2023-12-21 08:47:18,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594760113] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:18,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740639323] [2023-12-21 08:47:18,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:18,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:18,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:18,737 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:18,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 08:47:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:19,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 1795 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:47:19,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 08:47:19,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:19,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740639323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:19,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:19,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-21 08:47:19,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059667879] [2023-12-21 08:47:19,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:19,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:47:19,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:19,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:47:19,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:47:19,101 INFO L87 Difference]: Start difference. First operand 1438 states and 2403 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:19,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:19,382 INFO L93 Difference]: Finished difference Result 2740 states and 4599 transitions. [2023-12-21 08:47:19,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:47:19,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2023-12-21 08:47:19,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:19,389 INFO L225 Difference]: With dead ends: 2740 [2023-12-21 08:47:19,389 INFO L226 Difference]: Without dead ends: 1470 [2023-12-21 08:47:19,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:47:19,393 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 141 mSDsluCounter, 4081 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 4919 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:19,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 4919 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:19,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2023-12-21 08:47:19,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1438. [2023-12-21 08:47:19,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1125 states have (on average 1.6648888888888889) internal successors, (1873), 1176 states have internal predecessors, (1873), 246 states have call successors, (246), 59 states have call predecessors, (246), 66 states have return successors, (284), 238 states have call predecessors, (284), 241 states have call successors, (284) [2023-12-21 08:47:19,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2403 transitions. [2023-12-21 08:47:19,562 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2403 transitions. Word has length 112 [2023-12-21 08:47:19,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:19,562 INFO L495 AbstractCegarLoop]: Abstraction has 1438 states and 2403 transitions. [2023-12-21 08:47:19,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:19,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2403 transitions. [2023-12-21 08:47:19,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 08:47:19,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:19,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:19,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:19,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 08:47:19,772 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:19,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:19,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1792013499, now seen corresponding path program 1 times [2023-12-21 08:47:19,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:19,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527784314] [2023-12-21 08:47:19,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:19,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:19,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:19,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:19,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:19,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:19,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:20,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:20,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 08:47:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:20,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:20,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:20,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:20,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:47:20,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:20,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527784314] [2023-12-21 08:47:20,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527784314] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:20,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253164692] [2023-12-21 08:47:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:20,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:20,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:20,309 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:20,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 08:47:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:20,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:47:20,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 08:47:20,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:20,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253164692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:20,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:20,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-12-21 08:47:20,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33517541] [2023-12-21 08:47:20,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:20,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:47:20,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:20,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:47:20,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:47:20,734 INFO L87 Difference]: Start difference. First operand 1438 states and 2403 transitions. Second operand has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:21,036 INFO L93 Difference]: Finished difference Result 2726 states and 4574 transitions. [2023-12-21 08:47:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:47:21,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2023-12-21 08:47:21,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:21,043 INFO L225 Difference]: With dead ends: 2726 [2023-12-21 08:47:21,043 INFO L226 Difference]: Without dead ends: 1456 [2023-12-21 08:47:21,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:47:21,049 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 171 mSDsluCounter, 4864 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 5692 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:21,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 5692 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:21,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2023-12-21 08:47:21,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1438. [2023-12-21 08:47:21,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1125 states have (on average 1.6648888888888889) internal successors, (1873), 1176 states have internal predecessors, (1873), 246 states have call successors, (246), 59 states have call predecessors, (246), 66 states have return successors, (284), 238 states have call predecessors, (284), 241 states have call successors, (284) [2023-12-21 08:47:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2403 transitions. [2023-12-21 08:47:21,219 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2403 transitions. Word has length 112 [2023-12-21 08:47:21,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:21,220 INFO L495 AbstractCegarLoop]: Abstraction has 1438 states and 2403 transitions. [2023-12-21 08:47:21,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:21,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2403 transitions. [2023-12-21 08:47:21,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 08:47:21,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:21,222 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:21,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:21,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-21 08:47:21,429 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:21,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:21,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1075661725, now seen corresponding path program 1 times [2023-12-21 08:47:21,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:21,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60355689] [2023-12-21 08:47:21,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:21,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:21,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:21,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:21,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:21,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:21,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:21,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 08:47:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:21,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 08:47:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:21,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:21,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:21,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:21,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:21,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 08:47:21,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:21,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60355689] [2023-12-21 08:47:21,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60355689] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:21,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90740167] [2023-12-21 08:47:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:21,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:21,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:21,954 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:21,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 08:47:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:22,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 1795 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:47:22,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 08:47:22,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:22,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90740167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:22,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:22,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:47:22,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349896572] [2023-12-21 08:47:22,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:22,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:47:22,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:22,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:47:22,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:47:22,274 INFO L87 Difference]: Start difference. First operand 1438 states and 2403 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:22,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:22,501 INFO L93 Difference]: Finished difference Result 2778 states and 4659 transitions. [2023-12-21 08:47:22,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:47:22,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2023-12-21 08:47:22,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:22,508 INFO L225 Difference]: With dead ends: 2778 [2023-12-21 08:47:22,508 INFO L226 Difference]: Without dead ends: 1438 [2023-12-21 08:47:22,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:47:22,514 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 23 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:22,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2497 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:47:22,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2023-12-21 08:47:22,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1438. [2023-12-21 08:47:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1125 states have (on average 1.6613333333333333) internal successors, (1869), 1176 states have internal predecessors, (1869), 246 states have call successors, (246), 59 states have call predecessors, (246), 66 states have return successors, (284), 238 states have call predecessors, (284), 241 states have call successors, (284) [2023-12-21 08:47:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2399 transitions. [2023-12-21 08:47:22,683 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2399 transitions. Word has length 112 [2023-12-21 08:47:22,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:22,683 INFO L495 AbstractCegarLoop]: Abstraction has 1438 states and 2399 transitions. [2023-12-21 08:47:22,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:22,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2399 transitions. [2023-12-21 08:47:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 08:47:22,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:22,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:22,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-21 08:47:22,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 08:47:22,892 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:22,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash 557277008, now seen corresponding path program 1 times [2023-12-21 08:47:22,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:22,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736622527] [2023-12-21 08:47:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:22,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:23,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:23,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:23,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:23,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:23,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:23,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:23,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:47:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:23,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:23,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:23,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:47:23,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:23,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736622527] [2023-12-21 08:47:23,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736622527] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:23,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457987293] [2023-12-21 08:47:23,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:23,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:23,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:23,420 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:23,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 08:47:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:23,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:47:23,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:23,772 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 08:47:23,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:23,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457987293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:23,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:23,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-12-21 08:47:23,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525520943] [2023-12-21 08:47:23,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:23,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:47:23,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:23,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:47:23,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:47:23,774 INFO L87 Difference]: Start difference. First operand 1438 states and 2399 transitions. Second operand has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:24,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:24,089 INFO L93 Difference]: Finished difference Result 2726 states and 4571 transitions. [2023-12-21 08:47:24,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:47:24,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 113 [2023-12-21 08:47:24,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:24,095 INFO L225 Difference]: With dead ends: 2726 [2023-12-21 08:47:24,095 INFO L226 Difference]: Without dead ends: 1456 [2023-12-21 08:47:24,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:47:24,098 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 179 mSDsluCounter, 4826 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 5648 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:24,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 5648 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:24,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2023-12-21 08:47:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1438. [2023-12-21 08:47:24,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1125 states have (on average 1.6613333333333333) internal successors, (1869), 1176 states have internal predecessors, (1869), 246 states have call successors, (246), 59 states have call predecessors, (246), 66 states have return successors, (284), 238 states have call predecessors, (284), 241 states have call successors, (284) [2023-12-21 08:47:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2399 transitions. [2023-12-21 08:47:24,267 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2399 transitions. Word has length 113 [2023-12-21 08:47:24,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:24,267 INFO L495 AbstractCegarLoop]: Abstraction has 1438 states and 2399 transitions. [2023-12-21 08:47:24,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:24,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2399 transitions. [2023-12-21 08:47:24,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 08:47:24,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:24,269 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:24,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:24,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:24,477 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:24,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:24,477 INFO L85 PathProgramCache]: Analyzing trace with hash -78464320, now seen corresponding path program 1 times [2023-12-21 08:47:24,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:24,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274913910] [2023-12-21 08:47:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:24,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:24,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:24,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:24,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:24,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:24,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:24,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:24,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 08:47:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:24,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:24,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:24,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:25,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:25,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:47:25,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:25,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274913910] [2023-12-21 08:47:25,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274913910] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:25,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522116257] [2023-12-21 08:47:25,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:25,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:25,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:25,024 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:25,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 08:47:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:25,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 08:47:25,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:25,332 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 08:47:25,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:25,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522116257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:25,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:25,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:47:25,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190771081] [2023-12-21 08:47:25,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:25,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:47:25,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:25,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:47:25,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:47:25,333 INFO L87 Difference]: Start difference. First operand 1438 states and 2399 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:25,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:25,549 INFO L93 Difference]: Finished difference Result 2824 states and 4729 transitions. [2023-12-21 08:47:25,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:47:25,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2023-12-21 08:47:25,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:25,569 INFO L225 Difference]: With dead ends: 2824 [2023-12-21 08:47:25,569 INFO L226 Difference]: Without dead ends: 1466 [2023-12-21 08:47:25,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:47:25,574 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 14 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:25,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2476 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:47:25,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2023-12-21 08:47:25,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1462. [2023-12-21 08:47:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1149 states have (on average 1.6510008703220191) internal successors, (1897), 1200 states have internal predecessors, (1897), 246 states have call successors, (246), 59 states have call predecessors, (246), 66 states have return successors, (284), 238 states have call predecessors, (284), 241 states have call successors, (284) [2023-12-21 08:47:25,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2427 transitions. [2023-12-21 08:47:25,772 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2427 transitions. Word has length 114 [2023-12-21 08:47:25,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:25,773 INFO L495 AbstractCegarLoop]: Abstraction has 1462 states and 2427 transitions. [2023-12-21 08:47:25,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:25,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2427 transitions. [2023-12-21 08:47:25,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 08:47:25,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:25,774 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:25,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:25,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 08:47:25,987 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:25,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:25,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1243962178, now seen corresponding path program 1 times [2023-12-21 08:47:25,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:25,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153950590] [2023-12-21 08:47:25,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:25,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:26,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:26,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:26,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:26,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:26,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:26,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:26,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 08:47:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:26,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:26,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:26,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:47:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:26,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:26,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 08:47:26,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:26,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153950590] [2023-12-21 08:47:26,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153950590] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:26,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274971688] [2023-12-21 08:47:26,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:26,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:26,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:26,528 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:26,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 08:47:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:26,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 08:47:26,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:47:26,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:26,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274971688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:26,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:26,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:47:26,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646368694] [2023-12-21 08:47:26,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:26,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:47:26,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:26,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:47:26,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:47:26,835 INFO L87 Difference]: Start difference. First operand 1462 states and 2427 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:27,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:27,179 INFO L93 Difference]: Finished difference Result 3077 states and 5183 transitions. [2023-12-21 08:47:27,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 08:47:27,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2023-12-21 08:47:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:27,186 INFO L225 Difference]: With dead ends: 3077 [2023-12-21 08:47:27,186 INFO L226 Difference]: Without dead ends: 1813 [2023-12-21 08:47:27,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:47:27,189 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 211 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:27,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2613 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2023-12-21 08:47:27,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1468. [2023-12-21 08:47:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1155 states have (on average 1.6476190476190475) internal successors, (1903), 1206 states have internal predecessors, (1903), 246 states have call successors, (246), 59 states have call predecessors, (246), 66 states have return successors, (284), 238 states have call predecessors, (284), 241 states have call successors, (284) [2023-12-21 08:47:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2433 transitions. [2023-12-21 08:47:27,382 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2433 transitions. Word has length 114 [2023-12-21 08:47:27,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:27,382 INFO L495 AbstractCegarLoop]: Abstraction has 1468 states and 2433 transitions. [2023-12-21 08:47:27,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:27,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2433 transitions. [2023-12-21 08:47:27,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 08:47:27,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:27,384 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:27,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:27,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 08:47:27,591 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:27,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:27,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1710653608, now seen corresponding path program 1 times [2023-12-21 08:47:27,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:27,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566730621] [2023-12-21 08:47:27,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:27,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:27,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:27,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:27,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:27,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:47:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:27,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:27,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:28,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 08:47:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:28,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:28,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:28,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:47:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:28,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:28,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:47:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 08:47:28,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:28,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566730621] [2023-12-21 08:47:28,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566730621] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:28,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497227005] [2023-12-21 08:47:28,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:28,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:28,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:28,094 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:28,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 08:47:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:28,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 1813 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 08:47:28,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 08:47:28,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:28,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497227005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:28,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:28,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2023-12-21 08:47:28,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257921794] [2023-12-21 08:47:28,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:28,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 08:47:28,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:28,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 08:47:28,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-21 08:47:28,590 INFO L87 Difference]: Start difference. First operand 1468 states and 2433 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-21 08:47:30,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:30,929 INFO L93 Difference]: Finished difference Result 3348 states and 5624 transitions. [2023-12-21 08:47:30,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 08:47:30,930 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 117 [2023-12-21 08:47:30,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:30,944 INFO L225 Difference]: With dead ends: 3348 [2023-12-21 08:47:30,944 INFO L226 Difference]: Without dead ends: 2077 [2023-12-21 08:47:30,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-21 08:47:30,948 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 2440 mSDsluCounter, 3014 mSDsCounter, 0 mSdLazyCounter, 4494 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2544 SdHoareTripleChecker+Valid, 3901 SdHoareTripleChecker+Invalid, 4970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 4494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:30,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2544 Valid, 3901 Invalid, 4970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 4494 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 08:47:30,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2023-12-21 08:47:31,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2050. [2023-12-21 08:47:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2050 states, 1591 states have (on average 1.6411062225015713) internal successors, (2611), 1663 states have internal predecessors, (2611), 366 states have call successors, (366), 76 states have call predecessors, (366), 92 states have return successors, (430), 363 states have call predecessors, (430), 361 states have call successors, (430) [2023-12-21 08:47:31,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 3407 transitions. [2023-12-21 08:47:31,208 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 3407 transitions. Word has length 117 [2023-12-21 08:47:31,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:31,208 INFO L495 AbstractCegarLoop]: Abstraction has 2050 states and 3407 transitions. [2023-12-21 08:47:31,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-21 08:47:31,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 3407 transitions. [2023-12-21 08:47:31,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 08:47:31,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:31,210 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:31,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:31,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:31,418 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:31,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:31,418 INFO L85 PathProgramCache]: Analyzing trace with hash -484589682, now seen corresponding path program 1 times [2023-12-21 08:47:31,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:31,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59107259] [2023-12-21 08:47:31,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:31,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:31,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:31,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:31,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:47:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:31,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:31,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:31,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:47:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:31,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:31,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:47:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:31,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:31,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:47:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 08:47:31,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:31,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59107259] [2023-12-21 08:47:31,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59107259] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:31,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200306910] [2023-12-21 08:47:31,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:31,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:31,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:32,000 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:32,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 08:47:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:32,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 08:47:32,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 08:47:32,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:32,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200306910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:32,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:32,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-12-21 08:47:32,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747777910] [2023-12-21 08:47:32,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:32,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:47:32,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:32,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:47:32,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-12-21 08:47:32,332 INFO L87 Difference]: Start difference. First operand 2050 states and 3407 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:32,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:32,631 INFO L93 Difference]: Finished difference Result 3952 states and 6609 transitions. [2023-12-21 08:47:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:47:32,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2023-12-21 08:47:32,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:32,640 INFO L225 Difference]: With dead ends: 3952 [2023-12-21 08:47:32,640 INFO L226 Difference]: Without dead ends: 2092 [2023-12-21 08:47:32,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:47:32,646 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 14 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:32,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2475 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:47:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2023-12-21 08:47:32,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 2068. [2023-12-21 08:47:32,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 1609 states have (on average 1.641392169049099) internal successors, (2641), 1681 states have internal predecessors, (2641), 366 states have call successors, (366), 76 states have call predecessors, (366), 92 states have return successors, (430), 363 states have call predecessors, (430), 361 states have call successors, (430) [2023-12-21 08:47:32,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 3437 transitions. [2023-12-21 08:47:32,915 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 3437 transitions. Word has length 120 [2023-12-21 08:47:32,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:32,915 INFO L495 AbstractCegarLoop]: Abstraction has 2068 states and 3437 transitions. [2023-12-21 08:47:32,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:47:32,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 3437 transitions. [2023-12-21 08:47:32,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 08:47:32,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:32,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:32,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:33,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:33,124 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:33,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:33,125 INFO L85 PathProgramCache]: Analyzing trace with hash -33548980, now seen corresponding path program 1 times [2023-12-21 08:47:33,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:33,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991999267] [2023-12-21 08:47:33,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:33,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:33,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:33,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:33,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:33,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:47:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:33,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:33,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:47:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:33,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:33,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:33,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:47:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:33,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:47:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 08:47:33,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:33,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991999267] [2023-12-21 08:47:33,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991999267] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:33,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490702446] [2023-12-21 08:47:33,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:33,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:33,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:33,737 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:33,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 08:47:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:34,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 08:47:34,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 08:47:34,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:34,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490702446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:34,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:34,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2023-12-21 08:47:34,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197008839] [2023-12-21 08:47:34,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:34,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:47:34,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:34,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:47:34,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2023-12-21 08:47:34,127 INFO L87 Difference]: Start difference. First operand 2068 states and 3437 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:34,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:34,533 INFO L93 Difference]: Finished difference Result 3887 states and 6497 transitions. [2023-12-21 08:47:34,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:47:34,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 121 [2023-12-21 08:47:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:34,540 INFO L225 Difference]: With dead ends: 3887 [2023-12-21 08:47:34,540 INFO L226 Difference]: Without dead ends: 2131 [2023-12-21 08:47:34,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2023-12-21 08:47:34,544 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 147 mSDsluCounter, 4846 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 5668 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:34,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 5668 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:34,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2023-12-21 08:47:34,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2070. [2023-12-21 08:47:34,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1610 states have (on average 1.6403726708074535) internal successors, (2641), 1683 states have internal predecessors, (2641), 366 states have call successors, (366), 76 states have call predecessors, (366), 93 states have return successors, (431), 363 states have call predecessors, (431), 361 states have call successors, (431) [2023-12-21 08:47:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 3438 transitions. [2023-12-21 08:47:34,794 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 3438 transitions. Word has length 121 [2023-12-21 08:47:34,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:34,794 INFO L495 AbstractCegarLoop]: Abstraction has 2070 states and 3438 transitions. [2023-12-21 08:47:34,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:34,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 3438 transitions. [2023-12-21 08:47:34,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 08:47:34,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:34,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:34,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:35,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:35,004 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:35,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:35,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1837225994, now seen corresponding path program 1 times [2023-12-21 08:47:35,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:35,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398996128] [2023-12-21 08:47:35,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:35,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:35,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:35,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:35,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:35,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:47:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:35,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:35,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:35,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:47:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:35,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:35,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:35,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:47:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:35,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:35,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:47:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 08:47:35,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:35,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398996128] [2023-12-21 08:47:35,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398996128] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:35,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735902808] [2023-12-21 08:47:35,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:35,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:35,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:35,694 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:35,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 08:47:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:36,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:47:36,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 08:47:36,062 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:36,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735902808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:36,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:36,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2023-12-21 08:47:36,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96824614] [2023-12-21 08:47:36,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:36,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:47:36,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:36,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:47:36,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:47:36,064 INFO L87 Difference]: Start difference. First operand 2070 states and 3438 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:36,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:36,413 INFO L93 Difference]: Finished difference Result 3570 states and 5998 transitions. [2023-12-21 08:47:36,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 08:47:36,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 121 [2023-12-21 08:47:36,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:36,420 INFO L225 Difference]: With dead ends: 3570 [2023-12-21 08:47:36,420 INFO L226 Difference]: Without dead ends: 2070 [2023-12-21 08:47:36,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:47:36,426 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 328 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:36,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 2352 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:36,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2023-12-21 08:47:36,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 2070. [2023-12-21 08:47:36,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1610 states have (on average 1.6298136645962733) internal successors, (2624), 1683 states have internal predecessors, (2624), 366 states have call successors, (366), 76 states have call predecessors, (366), 93 states have return successors, (431), 363 states have call predecessors, (431), 361 states have call successors, (431) [2023-12-21 08:47:36,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 3421 transitions. [2023-12-21 08:47:36,720 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 3421 transitions. Word has length 121 [2023-12-21 08:47:36,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:36,720 INFO L495 AbstractCegarLoop]: Abstraction has 2070 states and 3421 transitions. [2023-12-21 08:47:36,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:47:36,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 3421 transitions. [2023-12-21 08:47:36,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 08:47:36,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:36,723 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:36,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-21 08:47:36,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-21 08:47:36,923 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:36,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:36,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1646055426, now seen corresponding path program 1 times [2023-12-21 08:47:36,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:36,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185715750] [2023-12-21 08:47:36,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:36,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:37,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:37,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:37,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:37,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:47:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:37,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:37,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:37,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:47:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:37,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:37,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:37,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:47:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:37,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:47:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:37,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:47:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:37,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:47:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:47:37,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:37,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185715750] [2023-12-21 08:47:37,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185715750] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:37,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028890820] [2023-12-21 08:47:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:37,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:37,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:37,646 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:37,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 08:47:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:37,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 08:47:37,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 08:47:38,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:38,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028890820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:38,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:38,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2023-12-21 08:47:38,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646690991] [2023-12-21 08:47:38,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:38,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:47:38,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:38,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:47:38,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2023-12-21 08:47:38,082 INFO L87 Difference]: Start difference. First operand 2070 states and 3421 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:47:40,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:40,198 INFO L93 Difference]: Finished difference Result 4984 states and 8405 transitions. [2023-12-21 08:47:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 08:47:40,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2023-12-21 08:47:40,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:40,211 INFO L225 Difference]: With dead ends: 4984 [2023-12-21 08:47:40,211 INFO L226 Difference]: Without dead ends: 3619 [2023-12-21 08:47:40,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2023-12-21 08:47:40,217 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 1885 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 3158 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 3539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 3158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:40,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1969 Valid, 1846 Invalid, 3539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 3158 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 08:47:40,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2023-12-21 08:47:40,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 3497. [2023-12-21 08:47:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3497 states, 2709 states have (on average 1.6375046142488003) internal successors, (4436), 2828 states have internal predecessors, (4436), 633 states have call successors, (633), 124 states have call predecessors, (633), 154 states have return successors, (808), 634 states have call predecessors, (808), 628 states have call successors, (808) [2023-12-21 08:47:40,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3497 states to 3497 states and 5877 transitions. [2023-12-21 08:47:40,687 INFO L78 Accepts]: Start accepts. Automaton has 3497 states and 5877 transitions. Word has length 124 [2023-12-21 08:47:40,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:40,688 INFO L495 AbstractCegarLoop]: Abstraction has 3497 states and 5877 transitions. [2023-12-21 08:47:40,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:47:40,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3497 states and 5877 transitions. [2023-12-21 08:47:40,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 08:47:40,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:40,691 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:40,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:40,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-21 08:47:40,897 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:40,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:40,897 INFO L85 PathProgramCache]: Analyzing trace with hash -698611615, now seen corresponding path program 1 times [2023-12-21 08:47:40,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:40,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497046094] [2023-12-21 08:47:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:40,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:41,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:41,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:41,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:41,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:47:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:41,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:41,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:47:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:41,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:41,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:41,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:47:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:41,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:47:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:41,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:47:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:41,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:47:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:47:41,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:41,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497046094] [2023-12-21 08:47:41,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497046094] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:41,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800902410] [2023-12-21 08:47:41,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:41,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:41,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:41,603 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:41,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 08:47:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:41,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 08:47:41,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 08:47:42,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:42,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800902410] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:42,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:42,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2023-12-21 08:47:42,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54083233] [2023-12-21 08:47:42,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:42,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 08:47:42,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:42,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 08:47:42,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:47:42,046 INFO L87 Difference]: Start difference. First operand 3497 states and 5877 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 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) [2023-12-21 08:47:42,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:42,743 INFO L93 Difference]: Finished difference Result 3697 states and 6223 transitions. [2023-12-21 08:47:42,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:47:42,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 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 124 [2023-12-21 08:47:42,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:42,758 INFO L225 Difference]: With dead ends: 3697 [2023-12-21 08:47:42,759 INFO L226 Difference]: Without dead ends: 3680 [2023-12-21 08:47:42,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:47:42,761 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 818 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:42,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1479 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 08:47:42,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2023-12-21 08:47:43,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 3509. [2023-12-21 08:47:43,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2721 states have (on average 1.6346931275266445) internal successors, (4448), 2840 states have internal predecessors, (4448), 633 states have call successors, (633), 124 states have call predecessors, (633), 154 states have return successors, (808), 634 states have call predecessors, (808), 628 states have call successors, (808) [2023-12-21 08:47:43,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 5889 transitions. [2023-12-21 08:47:43,246 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 5889 transitions. Word has length 124 [2023-12-21 08:47:43,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:43,246 INFO L495 AbstractCegarLoop]: Abstraction has 3509 states and 5889 transitions. [2023-12-21 08:47:43,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 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) [2023-12-21 08:47:43,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 5889 transitions. [2023-12-21 08:47:43,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 08:47:43,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:43,250 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:43,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:43,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:43,458 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:43,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:43,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1756957835, now seen corresponding path program 1 times [2023-12-21 08:47:43,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:43,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295561950] [2023-12-21 08:47:43,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:43,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:43,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:43,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:47:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:43,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:43,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:44,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:47:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:44,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:44,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:44,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:47:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:44,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:47:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:47:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:44,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:47:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:44,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:47:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:47:44,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:44,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295561950] [2023-12-21 08:47:44,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295561950] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:44,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666677863] [2023-12-21 08:47:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:44,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:44,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:44,070 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:44,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 08:47:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:44,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 08:47:44,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 08:47:44,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:44,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666677863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:44,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:44,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2023-12-21 08:47:44,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566396819] [2023-12-21 08:47:44,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:44,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 08:47:44,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:44,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 08:47:44,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:47:44,423 INFO L87 Difference]: Start difference. First operand 3509 states and 5889 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 08:47:44,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:45,000 INFO L93 Difference]: Finished difference Result 3538 states and 5927 transitions. [2023-12-21 08:47:45,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 08:47:45,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 129 [2023-12-21 08:47:45,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:45,038 INFO L225 Difference]: With dead ends: 3538 [2023-12-21 08:47:45,038 INFO L226 Difference]: Without dead ends: 3521 [2023-12-21 08:47:45,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-12-21 08:47:45,053 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 34 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:45,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3303 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:47:45,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2023-12-21 08:47:45,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 3509. [2023-12-21 08:47:45,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2721 states have (on average 1.6299154722528482) internal successors, (4435), 2840 states have internal predecessors, (4435), 633 states have call successors, (633), 124 states have call predecessors, (633), 154 states have return successors, (808), 634 states have call predecessors, (808), 628 states have call successors, (808) [2023-12-21 08:47:45,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 5876 transitions. [2023-12-21 08:47:45,557 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 5876 transitions. Word has length 129 [2023-12-21 08:47:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:45,557 INFO L495 AbstractCegarLoop]: Abstraction has 3509 states and 5876 transitions. [2023-12-21 08:47:45,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 08:47:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 5876 transitions. [2023-12-21 08:47:45,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 08:47:45,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:45,561 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:45,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-21 08:47:45,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:45,767 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:45,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:45,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1284467961, now seen corresponding path program 1 times [2023-12-21 08:47:45,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:45,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270356904] [2023-12-21 08:47:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:45,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:45,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:47:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:47:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:47:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:47:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:47:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:47:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:47:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:47:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,417 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 08:47:46,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:46,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270356904] [2023-12-21 08:47:46,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270356904] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:46,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349256314] [2023-12-21 08:47:46,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:46,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:46,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:46,418 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:46,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 08:47:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:46,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 08:47:46,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 08:47:46,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:46,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349256314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:46,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:46,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 17 [2023-12-21 08:47:46,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158326420] [2023-12-21 08:47:46,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:46,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:47:46,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:46,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:47:46,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:47:46,762 INFO L87 Difference]: Start difference. First operand 3509 states and 5876 transitions. Second operand has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2023-12-21 08:47:47,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:47,329 INFO L93 Difference]: Finished difference Result 6880 states and 11552 transitions. [2023-12-21 08:47:47,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:47:47,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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 138 [2023-12-21 08:47:47,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:47,342 INFO L225 Difference]: With dead ends: 6880 [2023-12-21 08:47:47,342 INFO L226 Difference]: Without dead ends: 3584 [2023-12-21 08:47:47,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:47:47,350 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 165 mSDsluCounter, 3988 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 4810 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:47,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 4810 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:47,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2023-12-21 08:47:47,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3509. [2023-12-21 08:47:47,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2721 states have (on average 1.6299154722528482) internal successors, (4435), 2840 states have internal predecessors, (4435), 633 states have call successors, (633), 124 states have call predecessors, (633), 154 states have return successors, (808), 634 states have call predecessors, (808), 628 states have call successors, (808) [2023-12-21 08:47:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 5876 transitions. [2023-12-21 08:47:47,834 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 5876 transitions. Word has length 138 [2023-12-21 08:47:47,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:47,834 INFO L495 AbstractCegarLoop]: Abstraction has 3509 states and 5876 transitions. [2023-12-21 08:47:47,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2023-12-21 08:47:47,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 5876 transitions. [2023-12-21 08:47:47,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 08:47:47,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:47,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:47,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-21 08:47:48,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-21 08:47:48,045 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:48,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:48,045 INFO L85 PathProgramCache]: Analyzing trace with hash 645762888, now seen corresponding path program 1 times [2023-12-21 08:47:48,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:48,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572222837] [2023-12-21 08:47:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:48,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:47:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:47:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:47:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:47:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:47:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:47:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:47:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:47:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,510 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 08:47:48,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:48,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572222837] [2023-12-21 08:47:48,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572222837] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:48,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748898071] [2023-12-21 08:47:48,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:48,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:48,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:48,512 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:48,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-21 08:47:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:48,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:47:48,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 08:47:48,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:48,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748898071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:48,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:48,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-12-21 08:47:48,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543820525] [2023-12-21 08:47:48,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:48,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:47:48,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:48,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:47:48,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:47:48,881 INFO L87 Difference]: Start difference. First operand 3509 states and 5876 transitions. Second operand has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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) [2023-12-21 08:47:49,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:49,505 INFO L93 Difference]: Finished difference Result 7037 states and 11790 transitions. [2023-12-21 08:47:49,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:47:49,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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 138 [2023-12-21 08:47:49,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:49,518 INFO L225 Difference]: With dead ends: 7037 [2023-12-21 08:47:49,519 INFO L226 Difference]: Without dead ends: 3589 [2023-12-21 08:47:49,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:47:49,527 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 154 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 5617 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:49,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 5617 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:49,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2023-12-21 08:47:50,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 3482. [2023-12-21 08:47:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 2694 states have (on average 1.6280623608017817) internal successors, (4386), 2813 states have internal predecessors, (4386), 633 states have call successors, (633), 124 states have call predecessors, (633), 154 states have return successors, (807), 634 states have call predecessors, (807), 628 states have call successors, (807) [2023-12-21 08:47:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 5826 transitions. [2023-12-21 08:47:50,047 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 5826 transitions. Word has length 138 [2023-12-21 08:47:50,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:50,047 INFO L495 AbstractCegarLoop]: Abstraction has 3482 states and 5826 transitions. [2023-12-21 08:47:50,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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) [2023-12-21 08:47:50,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 5826 transitions. [2023-12-21 08:47:50,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 08:47:50,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:50,051 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:50,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:50,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-21 08:47:50,257 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:50,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:50,258 INFO L85 PathProgramCache]: Analyzing trace with hash -283585012, now seen corresponding path program 1 times [2023-12-21 08:47:50,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:50,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258778849] [2023-12-21 08:47:50,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:50,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 08:47:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 08:47:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:47:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:47:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:47:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:47:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:47:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:47:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 08:47:50,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:50,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258778849] [2023-12-21 08:47:50,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258778849] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:50,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518340104] [2023-12-21 08:47:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:50,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:50,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:50,787 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:50,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-21 08:47:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:51,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:47:51,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 08:47:51,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:51,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518340104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:51,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:51,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:47:51,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498437187] [2023-12-21 08:47:51,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:51,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:47:51,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:51,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:47:51,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:47:51,133 INFO L87 Difference]: Start difference. First operand 3482 states and 5826 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) [2023-12-21 08:47:51,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:51,747 INFO L93 Difference]: Finished difference Result 6926 states and 11605 transitions. [2023-12-21 08:47:51,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:47:51,747 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 140 [2023-12-21 08:47:51,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:51,760 INFO L225 Difference]: With dead ends: 6926 [2023-12-21 08:47:51,760 INFO L226 Difference]: Without dead ends: 3482 [2023-12-21 08:47:51,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:47:51,769 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 173 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:51,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2312 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:47:51,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2023-12-21 08:47:52,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3482. [2023-12-21 08:47:52,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 2694 states have (on average 1.6273199703043801) internal successors, (4384), 2813 states have internal predecessors, (4384), 633 states have call successors, (633), 124 states have call predecessors, (633), 154 states have return successors, (807), 634 states have call predecessors, (807), 628 states have call successors, (807) [2023-12-21 08:47:52,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 5824 transitions. [2023-12-21 08:47:52,392 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 5824 transitions. Word has length 140 [2023-12-21 08:47:52,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:52,392 INFO L495 AbstractCegarLoop]: Abstraction has 3482 states and 5824 transitions. [2023-12-21 08:47:52,393 INFO L496 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) [2023-12-21 08:47:52,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 5824 transitions. [2023-12-21 08:47:52,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 08:47:52,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:52,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:52,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:52,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-21 08:47:52,603 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:52,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:52,603 INFO L85 PathProgramCache]: Analyzing trace with hash -321685762, now seen corresponding path program 1 times [2023-12-21 08:47:52,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:52,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047724437] [2023-12-21 08:47:52,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:52,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:52,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:52,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:52,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:52,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 08:47:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:52,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:52,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:53,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 08:47:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:53,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:53,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:53,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:47:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:53,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:47:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:53,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:47:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:53,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:47:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:53,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:47:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:53,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:47:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:47:53,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047724437] [2023-12-21 08:47:53,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047724437] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:47:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530005029] [2023-12-21 08:47:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:53,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:47:53,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:47:53,150 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:47:53,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-21 08:47:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:53,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 08:47:53,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:47:53,478 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 08:47:53,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:47:53,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530005029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:53,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:47:53,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:47:53,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999790553] [2023-12-21 08:47:53,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:53,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:47:53,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:53,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:47:53,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:47:53,480 INFO L87 Difference]: Start difference. First operand 3482 states and 5824 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-12-21 08:47:54,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:54,025 INFO L93 Difference]: Finished difference Result 6835 states and 11460 transitions. [2023-12-21 08:47:54,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:47:54,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 140 [2023-12-21 08:47:54,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:54,038 INFO L225 Difference]: With dead ends: 6835 [2023-12-21 08:47:54,039 INFO L226 Difference]: Without dead ends: 3344 [2023-12-21 08:47:54,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:47:54,047 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 11 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:54,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2466 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:47:54,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2023-12-21 08:47:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 3344. [2023-12-21 08:47:54,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 2571 states have (on average 1.632827693504473) internal successors, (4198), 2684 states have internal predecessors, (4198), 628 states have call successors, (628), 121 states have call predecessors, (628), 144 states have return successors, (794), 628 states have call predecessors, (794), 623 states have call successors, (794) [2023-12-21 08:47:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 5620 transitions. [2023-12-21 08:47:54,524 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 5620 transitions. Word has length 140 [2023-12-21 08:47:54,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:47:54,524 INFO L495 AbstractCegarLoop]: Abstraction has 3344 states and 5620 transitions. [2023-12-21 08:47:54,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-12-21 08:47:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 5620 transitions. [2023-12-21 08:47:54,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 08:47:54,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:47:54,528 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:47:54,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-21 08:47:54,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-21 08:47:54,736 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:47:54,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:47:54,736 INFO L85 PathProgramCache]: Analyzing trace with hash -301045716, now seen corresponding path program 1 times [2023-12-21 08:47:54,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:47:54,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180410257] [2023-12-21 08:47:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:47:54,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:47:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:54,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:47:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:54,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:54,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:47:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:54,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:47:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:54,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:54,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:47:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:55,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:47:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:55,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:55,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:47:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:55,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:47:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:55,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:47:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:55,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:47:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:55,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:47:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:55,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:47:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:55,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:47:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:47:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 08:47:55,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:47:55,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180410257] [2023-12-21 08:47:55,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180410257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:47:55,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:47:55,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 08:47:55,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984301387] [2023-12-21 08:47:55,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:47:55,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 08:47:55,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:47:55,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 08:47:55,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:47:55,332 INFO L87 Difference]: Start difference. First operand 3344 states and 5620 transitions. Second operand has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 08:48:01,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:48:01,516 INFO L93 Difference]: Finished difference Result 7855 states and 13604 transitions. [2023-12-21 08:48:01,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 08:48:01,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2023-12-21 08:48:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:48:01,551 INFO L225 Difference]: With dead ends: 7855 [2023-12-21 08:48:01,551 INFO L226 Difference]: Without dead ends: 4551 [2023-12-21 08:48:01,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-12-21 08:48:01,562 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1425 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 5065 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 5408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 5065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-21 08:48:01,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 2793 Invalid, 5408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 5065 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-21 08:48:01,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2023-12-21 08:48:02,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 3348. [2023-12-21 08:48:02,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3348 states, 2575 states have (on average 1.6318446601941747) internal successors, (4202), 2688 states have internal predecessors, (4202), 628 states have call successors, (628), 121 states have call predecessors, (628), 144 states have return successors, (794), 628 states have call predecessors, (794), 623 states have call successors, (794) [2023-12-21 08:48:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3348 states to 3348 states and 5624 transitions. [2023-12-21 08:48:02,103 INFO L78 Accepts]: Start accepts. Automaton has 3348 states and 5624 transitions. Word has length 141 [2023-12-21 08:48:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:48:02,103 INFO L495 AbstractCegarLoop]: Abstraction has 3348 states and 5624 transitions. [2023-12-21 08:48:02,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 08:48:02,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3348 states and 5624 transitions. [2023-12-21 08:48:02,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 08:48:02,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:48:02,107 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:48:02,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 08:48:02,107 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:48:02,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:48:02,107 INFO L85 PathProgramCache]: Analyzing trace with hash 651942685, now seen corresponding path program 1 times [2023-12-21 08:48:02,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:48:02,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194443058] [2023-12-21 08:48:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:48:02,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:48:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:48:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:48:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:48:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:48:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:48:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:48:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:48:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:48:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:48:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:48:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:48:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:02,651 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 08:48:02,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:48:02,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194443058] [2023-12-21 08:48:02,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194443058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:48:02,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:48:02,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 08:48:02,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256975806] [2023-12-21 08:48:02,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:48:02,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:48:02,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:48:02,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:48:02,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 08:48:02,653 INFO L87 Difference]: Start difference. First operand 3348 states and 5624 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:48:07,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:48:07,918 INFO L93 Difference]: Finished difference Result 7739 states and 13414 transitions. [2023-12-21 08:48:07,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 08:48:07,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2023-12-21 08:48:07,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:48:07,938 INFO L225 Difference]: With dead ends: 7739 [2023-12-21 08:48:07,938 INFO L226 Difference]: Without dead ends: 4524 [2023-12-21 08:48:07,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:48:07,948 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 899 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 3033 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 3232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 3033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-21 08:48:07,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1616 Invalid, 3232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 3033 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-21 08:48:07,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4524 states. [2023-12-21 08:48:08,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4524 to 3350. [2023-12-21 08:48:08,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 2577 states have (on average 1.6313542879317036) internal successors, (4204), 2690 states have internal predecessors, (4204), 628 states have call successors, (628), 121 states have call predecessors, (628), 144 states have return successors, (794), 628 states have call predecessors, (794), 623 states have call successors, (794) [2023-12-21 08:48:08,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 5626 transitions. [2023-12-21 08:48:08,495 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 5626 transitions. Word has length 141 [2023-12-21 08:48:08,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:48:08,496 INFO L495 AbstractCegarLoop]: Abstraction has 3350 states and 5626 transitions. [2023-12-21 08:48:08,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:48:08,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 5626 transitions. [2023-12-21 08:48:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 08:48:08,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:48:08,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:48:08,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 08:48:08,499 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:48:08,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:48:08,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2095236873, now seen corresponding path program 1 times [2023-12-21 08:48:08,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:48:08,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036780549] [2023-12-21 08:48:08,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:48:08,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:48:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:08,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:48:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:08,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:08,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:48:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:08,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:48:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:48:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:48:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:09,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:09,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:48:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:09,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:48:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:09,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:48:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:09,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:48:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:09,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:48:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:09,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:48:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 08:48:09,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:48:09,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036780549] [2023-12-21 08:48:09,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036780549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:48:09,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:48:09,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 08:48:09,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671381560] [2023-12-21 08:48:09,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:48:09,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 08:48:09,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:48:09,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 08:48:09,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:48:09,125 INFO L87 Difference]: Start difference. First operand 3350 states and 5626 transitions. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 08:48:23,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:48:23,174 INFO L93 Difference]: Finished difference Result 6868 states and 12036 transitions. [2023-12-21 08:48:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 08:48:23,175 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) Word has length 142 [2023-12-21 08:48:23,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:48:23,190 INFO L225 Difference]: With dead ends: 6868 [2023-12-21 08:48:23,191 INFO L226 Difference]: Without dead ends: 4079 [2023-12-21 08:48:23,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=389, Invalid=1773, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 08:48:23,200 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 5917 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 6672 mSolverCounterSat, 2002 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5918 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 8674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2002 IncrementalHoareTripleChecker+Valid, 6672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-21 08:48:23,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5918 Valid, 2254 Invalid, 8674 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2002 Valid, 6672 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-21 08:48:23,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4079 states. [2023-12-21 08:48:23,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4079 to 2972. [2023-12-21 08:48:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2287 states have (on average 1.6156536947966769) internal successors, (3695), 2387 states have internal predecessors, (3695), 551 states have call successors, (551), 110 states have call predecessors, (551), 133 states have return successors, (718), 552 states have call predecessors, (718), 546 states have call successors, (718) [2023-12-21 08:48:23,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 4964 transitions. [2023-12-21 08:48:23,739 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 4964 transitions. Word has length 142 [2023-12-21 08:48:23,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:48:23,739 INFO L495 AbstractCegarLoop]: Abstraction has 2972 states and 4964 transitions. [2023-12-21 08:48:23,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 08:48:23,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 4964 transitions. [2023-12-21 08:48:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 08:48:23,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:48:23,743 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:48:23,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 08:48:23,743 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:48:23,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:48:23,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1369745077, now seen corresponding path program 1 times [2023-12-21 08:48:23,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:48:23,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427737438] [2023-12-21 08:48:23,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:48:23,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:48:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:23,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:48:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:48:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:48:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:48:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:48:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:48:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:48:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:48:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:48:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:48:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:48:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 08:48:24,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:48:24,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427737438] [2023-12-21 08:48:24,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427737438] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:48:24,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289796876] [2023-12-21 08:48:24,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:48:24,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:48:24,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:48:24,418 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:48:24,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-21 08:48:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:24,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 08:48:24,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:48:24,871 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 08:48:24,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 08:48:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 08:48:25,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289796876] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 08:48:25,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 08:48:25,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 18 [2023-12-21 08:48:25,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196321494] [2023-12-21 08:48:25,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 08:48:25,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 08:48:25,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:48:25,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 08:48:25,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:48:25,103 INFO L87 Difference]: Start difference. First operand 2972 states and 4964 transitions. Second operand has 18 states, 18 states have (on average 10.333333333333334) internal successors, (186), 15 states have internal predecessors, (186), 7 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) [2023-12-21 08:48:55,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:48:55,723 INFO L93 Difference]: Finished difference Result 8986 states and 16011 transitions. [2023-12-21 08:48:55,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-12-21 08:48:55,733 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.333333333333334) internal successors, (186), 15 states have internal predecessors, (186), 7 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) Word has length 143 [2023-12-21 08:48:55,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:48:55,759 INFO L225 Difference]: With dead ends: 8986 [2023-12-21 08:48:55,759 INFO L226 Difference]: Without dead ends: 6171 [2023-12-21 08:48:55,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5763 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=1759, Invalid=13741, Unknown=0, NotChecked=0, Total=15500 [2023-12-21 08:48:55,773 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 9779 mSDsluCounter, 5920 mSDsCounter, 0 mSdLazyCounter, 15720 mSolverCounterSat, 3142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9843 SdHoareTripleChecker+Valid, 6716 SdHoareTripleChecker+Invalid, 18862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3142 IncrementalHoareTripleChecker+Valid, 15720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2023-12-21 08:48:55,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9843 Valid, 6716 Invalid, 18862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3142 Valid, 15720 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2023-12-21 08:48:55,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6171 states. [2023-12-21 08:48:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6171 to 4094. [2023-12-21 08:48:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4094 states, 3159 states have (on average 1.5745489078822412) internal successors, (4974), 3303 states have internal predecessors, (4974), 731 states have call successors, (731), 161 states have call predecessors, (731), 203 states have return successors, (1035), 719 states have call predecessors, (1035), 726 states have call successors, (1035) [2023-12-21 08:48:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 6740 transitions. [2023-12-21 08:48:56,557 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 6740 transitions. Word has length 143 [2023-12-21 08:48:56,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:48:56,558 INFO L495 AbstractCegarLoop]: Abstraction has 4094 states and 6740 transitions. [2023-12-21 08:48:56,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.333333333333334) internal successors, (186), 15 states have internal predecessors, (186), 7 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) [2023-12-21 08:48:56,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 6740 transitions. [2023-12-21 08:48:56,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 08:48:56,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:48:56,560 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 08:48:56,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-21 08:48:56,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:48:56,766 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:48:56,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:48:56,767 INFO L85 PathProgramCache]: Analyzing trace with hash 53172933, now seen corresponding path program 1 times [2023-12-21 08:48:56,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:48:56,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086327557] [2023-12-21 08:48:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:48:56,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:48:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:48:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:48:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:48:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:48:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:48:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:48:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:48:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:48:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:48:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:48:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:48:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 08:48:57,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:48:57,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086327557] [2023-12-21 08:48:57,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086327557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:48:57,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:48:57,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 08:48:57,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917213883] [2023-12-21 08:48:57,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:48:57,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 08:48:57,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:48:57,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 08:48:57,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:48:57,328 INFO L87 Difference]: Start difference. First operand 4094 states and 6740 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-21 08:49:06,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:49:06,065 INFO L93 Difference]: Finished difference Result 9305 states and 15969 transitions. [2023-12-21 08:49:06,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 08:49:06,066 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 146 [2023-12-21 08:49:06,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:49:06,084 INFO L225 Difference]: With dead ends: 9305 [2023-12-21 08:49:06,085 INFO L226 Difference]: Without dead ends: 5776 [2023-12-21 08:49:06,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-12-21 08:49:06,093 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 2655 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 5639 mSolverCounterSat, 740 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2714 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 6379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 740 IncrementalHoareTripleChecker+Valid, 5639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:49:06,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2714 Valid, 3071 Invalid, 6379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [740 Valid, 5639 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-21 08:49:06,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5776 states. [2023-12-21 08:49:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5776 to 4384. [2023-12-21 08:49:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 3407 states have (on average 1.5653067214558263) internal successors, (5333), 3549 states have internal predecessors, (5333), 755 states have call successors, (755), 181 states have call predecessors, (755), 221 states have return successors, (1026), 743 states have call predecessors, (1026), 750 states have call successors, (1026) [2023-12-21 08:49:06,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 7114 transitions. [2023-12-21 08:49:06,919 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 7114 transitions. Word has length 146 [2023-12-21 08:49:06,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:49:06,919 INFO L495 AbstractCegarLoop]: Abstraction has 4384 states and 7114 transitions. [2023-12-21 08:49:06,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-21 08:49:06,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 7114 transitions. [2023-12-21 08:49:06,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 08:49:06,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:49:06,922 INFO L195 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] [2023-12-21 08:49:06,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 08:49:06,922 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:49:06,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:49:06,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1955688658, now seen corresponding path program 1 times [2023-12-21 08:49:06,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:49:06,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115887041] [2023-12-21 08:49:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:49:06,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:49:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:49:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:49:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:49:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:49:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:49:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:49:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:49:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:49:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:49:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:49:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 08:49:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 08:49:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 08:49:07,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:49:07,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115887041] [2023-12-21 08:49:07,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115887041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:49:07,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:49:07,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 08:49:07,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761540956] [2023-12-21 08:49:07,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:49:07,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:49:07,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:49:07,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:49:07,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 08:49:07,528 INFO L87 Difference]: Start difference. First operand 4384 states and 7114 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-21 08:49:19,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:49:19,758 INFO L93 Difference]: Finished difference Result 18432 states and 32372 transitions. [2023-12-21 08:49:19,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 08:49:19,759 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2023-12-21 08:49:19,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:49:19,830 INFO L225 Difference]: With dead ends: 18432 [2023-12-21 08:49:19,830 INFO L226 Difference]: Without dead ends: 14228 [2023-12-21 08:49:19,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2023-12-21 08:49:19,850 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 4592 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 4155 mSolverCounterSat, 1277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4653 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 5432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1277 IncrementalHoareTripleChecker+Valid, 4155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-21 08:49:19,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4653 Valid, 2137 Invalid, 5432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1277 Valid, 4155 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-21 08:49:19,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14228 states. [2023-12-21 08:49:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14228 to 10116. [2023-12-21 08:49:21,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10116 states, 7728 states have (on average 1.547748447204969) internal successors, (11961), 8104 states have internal predecessors, (11961), 1862 states have call successors, (1862), 403 states have call predecessors, (1862), 525 states have return successors, (2778), 1828 states have call predecessors, (2778), 1857 states have call successors, (2778) [2023-12-21 08:49:22,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10116 states to 10116 states and 16601 transitions. [2023-12-21 08:49:22,084 INFO L78 Accepts]: Start accepts. Automaton has 10116 states and 16601 transitions. Word has length 149 [2023-12-21 08:49:22,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:49:22,084 INFO L495 AbstractCegarLoop]: Abstraction has 10116 states and 16601 transitions. [2023-12-21 08:49:22,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-21 08:49:22,085 INFO L276 IsEmpty]: Start isEmpty. Operand 10116 states and 16601 transitions. [2023-12-21 08:49:22,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 08:49:22,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:49:22,088 INFO L195 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] [2023-12-21 08:49:22,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 08:49:22,089 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:49:22,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:49:22,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1552989, now seen corresponding path program 1 times [2023-12-21 08:49:22,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:49:22,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588887671] [2023-12-21 08:49:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:49:22,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:49:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:49:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:49:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:49:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:49:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:49:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:49:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:49:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 08:49:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:49:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 08:49:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:49:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:49:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 08:49:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 08:49:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 08:49:22,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:49:22,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588887671] [2023-12-21 08:49:22,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588887671] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:49:22,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232595467] [2023-12-21 08:49:22,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:49:22,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:49:22,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:49:22,954 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) [2023-12-21 08:49:22,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-21 08:49:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:23,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 1953 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:49:23,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:49:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-21 08:49:23,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:49:23,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232595467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:49:23,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:49:23,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2023-12-21 08:49:23,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34216165] [2023-12-21 08:49:23,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:49:23,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:49:23,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:49:23,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:49:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:49:23,326 INFO L87 Difference]: Start difference. First operand 10116 states and 16601 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 08:49:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:49:25,551 INFO L93 Difference]: Finished difference Result 10503 states and 17263 transitions. [2023-12-21 08:49:25,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:49:25,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 159 [2023-12-21 08:49:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:49:25,585 INFO L225 Difference]: With dead ends: 10503 [2023-12-21 08:49:25,585 INFO L226 Difference]: Without dead ends: 10486 [2023-12-21 08:49:25,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:49:25,591 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 48 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:49:25,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2558 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:49:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10486 states. [2023-12-21 08:49:27,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10486 to 10146. [2023-12-21 08:49:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10146 states, 7758 states have (on average 1.5436968290796598) internal successors, (11976), 8134 states have internal predecessors, (11976), 1862 states have call successors, (1862), 403 states have call predecessors, (1862), 525 states have return successors, (2778), 1828 states have call predecessors, (2778), 1857 states have call successors, (2778) [2023-12-21 08:49:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10146 states to 10146 states and 16616 transitions. [2023-12-21 08:49:27,652 INFO L78 Accepts]: Start accepts. Automaton has 10146 states and 16616 transitions. Word has length 159 [2023-12-21 08:49:27,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:49:27,653 INFO L495 AbstractCegarLoop]: Abstraction has 10146 states and 16616 transitions. [2023-12-21 08:49:27,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 08:49:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 10146 states and 16616 transitions. [2023-12-21 08:49:27,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-21 08:49:27,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:49:27,658 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 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] [2023-12-21 08:49:27,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-21 08:49:27,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:49:27,865 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:49:27,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:49:27,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2102401181, now seen corresponding path program 1 times [2023-12-21 08:49:27,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:49:27,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693855240] [2023-12-21 08:49:27,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:49:27,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:49:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:49:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:49:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:49:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:49:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:49:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:49:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:49:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 08:49:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:49:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 08:49:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:49:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:49:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 08:49:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 08:49:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 08:49:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 08:49:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 08:49:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 08:49:28,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:49:28,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693855240] [2023-12-21 08:49:28,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693855240] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:49:28,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416668776] [2023-12-21 08:49:28,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:49:28,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:49:28,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:49:28,784 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) [2023-12-21 08:49:28,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-21 08:49:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:29,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 2028 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 08:49:29,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:49:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 46 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-21 08:49:29,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 08:49:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 08:49:29,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416668776] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 08:49:29,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 08:49:29,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 22 [2023-12-21 08:49:29,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022069497] [2023-12-21 08:49:29,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 08:49:29,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 08:49:29,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:49:29,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 08:49:29,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-12-21 08:49:29,729 INFO L87 Difference]: Start difference. First operand 10146 states and 16616 transitions. Second operand has 22 states, 21 states have (on average 12.523809523809524) internal successors, (263), 16 states have internal predecessors, (263), 9 states have call successors, (56), 8 states have call predecessors, (56), 13 states have return successors, (54), 12 states have call predecessors, (54), 9 states have call successors, (54) [2023-12-21 08:49:52,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:49:52,230 INFO L93 Difference]: Finished difference Result 42720 states and 78501 transitions. [2023-12-21 08:49:52,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 08:49:52,231 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 12.523809523809524) internal successors, (263), 16 states have internal predecessors, (263), 9 states have call successors, (56), 8 states have call predecessors, (56), 13 states have return successors, (54), 12 states have call predecessors, (54), 9 states have call successors, (54) Word has length 187 [2023-12-21 08:49:52,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:49:52,442 INFO L225 Difference]: With dead ends: 42720 [2023-12-21 08:49:52,443 INFO L226 Difference]: Without dead ends: 32757 [2023-12-21 08:49:52,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=793, Invalid=3367, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 08:49:52,516 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 7945 mSDsluCounter, 5958 mSDsCounter, 0 mSdLazyCounter, 16554 mSolverCounterSat, 2440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7954 SdHoareTripleChecker+Valid, 6882 SdHoareTripleChecker+Invalid, 18994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2440 IncrementalHoareTripleChecker+Valid, 16554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-12-21 08:49:52,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7954 Valid, 6882 Invalid, 18994 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2440 Valid, 16554 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-12-21 08:49:52,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32757 states. [2023-12-21 08:49:58,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32757 to 23281. [2023-12-21 08:49:58,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23281 states, 17453 states have (on average 1.5227181573368476) internal successors, (26576), 18338 states have internal predecessors, (26576), 4632 states have call successors, (4632), 884 states have call predecessors, (4632), 1195 states have return successors, (7166), 4615 states have call predecessors, (7166), 4627 states have call successors, (7166) [2023-12-21 08:49:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23281 states to 23281 states and 38374 transitions. [2023-12-21 08:49:58,477 INFO L78 Accepts]: Start accepts. Automaton has 23281 states and 38374 transitions. Word has length 187 [2023-12-21 08:49:58,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:49:58,477 INFO L495 AbstractCegarLoop]: Abstraction has 23281 states and 38374 transitions. [2023-12-21 08:49:58,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 12.523809523809524) internal successors, (263), 16 states have internal predecessors, (263), 9 states have call successors, (56), 8 states have call predecessors, (56), 13 states have return successors, (54), 12 states have call predecessors, (54), 9 states have call successors, (54) [2023-12-21 08:49:58,479 INFO L276 IsEmpty]: Start isEmpty. Operand 23281 states and 38374 transitions. [2023-12-21 08:49:58,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-21 08:49:58,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:49:58,496 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 3, 3, 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] [2023-12-21 08:49:58,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-21 08:49:58,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-21 08:49:58,703 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:49:58,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:49:58,703 INFO L85 PathProgramCache]: Analyzing trace with hash 304053457, now seen corresponding path program 1 times [2023-12-21 08:49:58,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:49:58,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228038011] [2023-12-21 08:49:58,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:49:58,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:49:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:58,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:49:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:58,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:58,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:49:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:58,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-21 08:49:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:58,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:58,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:49:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 08:49:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:49:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:49:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:49:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:49:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:49:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 08:49:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 08:49:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 08:49:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 08:49:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 08:49:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 08:49:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-12-21 08:49:59,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:49:59,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228038011] [2023-12-21 08:49:59,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228038011] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:49:59,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003368084] [2023-12-21 08:49:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:49:59,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:49:59,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:49:59,288 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) [2023-12-21 08:49:59,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-21 08:49:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:59,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 2007 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:49:59,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:49:59,648 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-21 08:49:59,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:49:59,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003368084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:49:59,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:49:59,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:49:59,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025330351] [2023-12-21 08:49:59,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:49:59,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:49:59,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:49:59,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:49:59,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:49:59,650 INFO L87 Difference]: Start difference. First operand 23281 states and 38374 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 08:50:05,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:50:05,468 INFO L93 Difference]: Finished difference Result 46478 states and 76629 transitions. [2023-12-21 08:50:05,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:50:05,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 190 [2023-12-21 08:50:05,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:50:05,579 INFO L225 Difference]: With dead ends: 46478 [2023-12-21 08:50:05,580 INFO L226 Difference]: Without dead ends: 23336 [2023-12-21 08:50:05,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:50:05,724 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 65 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:50:05,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 2428 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:50:05,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23336 states. [2023-12-21 08:50:11,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23336 to 23282. [2023-12-21 08:50:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23282 states, 17454 states have (on average 1.5224017417210955) internal successors, (26572), 18339 states have internal predecessors, (26572), 4632 states have call successors, (4632), 884 states have call predecessors, (4632), 1195 states have return successors, (7166), 4615 states have call predecessors, (7166), 4627 states have call successors, (7166) [2023-12-21 08:50:11,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23282 states to 23282 states and 38370 transitions. [2023-12-21 08:50:11,363 INFO L78 Accepts]: Start accepts. Automaton has 23282 states and 38370 transitions. Word has length 190 [2023-12-21 08:50:11,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:50:11,363 INFO L495 AbstractCegarLoop]: Abstraction has 23282 states and 38370 transitions. [2023-12-21 08:50:11,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 08:50:11,364 INFO L276 IsEmpty]: Start isEmpty. Operand 23282 states and 38370 transitions. [2023-12-21 08:50:11,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-21 08:50:11,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:50:11,379 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 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] [2023-12-21 08:50:11,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-21 08:50:11,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-21 08:50:11,587 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:50:11,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:50:11,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1097244830, now seen corresponding path program 1 times [2023-12-21 08:50:11,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:50:11,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823659628] [2023-12-21 08:50:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:50:11,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:50:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:11,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:50:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:11,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:50:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:11,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:50:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:11,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:50:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:11,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:50:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:11,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:50:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:50:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:50:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:50:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:50:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:50:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:50:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:50:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:50:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 08:50:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 08:50:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 08:50:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 08:50:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 08:50:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 08:50:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,217 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-21 08:50:12,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:50:12,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823659628] [2023-12-21 08:50:12,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823659628] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:50:12,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87765579] [2023-12-21 08:50:12,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:50:12,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:50:12,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:50:12,218 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) [2023-12-21 08:50:12,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-21 08:50:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:12,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 2011 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 08:50:12,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:50:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-21 08:50:12,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:50:12,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87765579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:50:12,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:50:12,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-12-21 08:50:12,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035284633] [2023-12-21 08:50:12,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:50:12,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:50:12,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:50:12,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:50:12,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:50:12,589 INFO L87 Difference]: Start difference. First operand 23282 states and 38370 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 08:50:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:50:18,496 INFO L93 Difference]: Finished difference Result 44340 states and 72721 transitions. [2023-12-21 08:50:18,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:50:18,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 191 [2023-12-21 08:50:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:50:18,588 INFO L225 Difference]: With dead ends: 44340 [2023-12-21 08:50:18,588 INFO L226 Difference]: Without dead ends: 23305 [2023-12-21 08:50:18,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:50:18,644 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 43 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:50:18,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2454 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:50:18,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23305 states. [2023-12-21 08:50:23,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23305 to 23264. [2023-12-21 08:50:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23264 states, 17436 states have (on average 1.5221381050699703) internal successors, (26540), 18321 states have internal predecessors, (26540), 4632 states have call successors, (4632), 884 states have call predecessors, (4632), 1195 states have return successors, (7166), 4615 states have call predecessors, (7166), 4627 states have call successors, (7166) [2023-12-21 08:50:24,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23264 states to 23264 states and 38338 transitions. [2023-12-21 08:50:24,228 INFO L78 Accepts]: Start accepts. Automaton has 23264 states and 38338 transitions. Word has length 191 [2023-12-21 08:50:24,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:50:24,228 INFO L495 AbstractCegarLoop]: Abstraction has 23264 states and 38338 transitions. [2023-12-21 08:50:24,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 08:50:24,228 INFO L276 IsEmpty]: Start isEmpty. Operand 23264 states and 38338 transitions. [2023-12-21 08:50:24,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 08:50:24,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:50:24,245 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 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] [2023-12-21 08:50:24,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-21 08:50:24,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-21 08:50:24,452 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:50:24,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:50:24,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1529359835, now seen corresponding path program 1 times [2023-12-21 08:50:24,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:50:24,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074424030] [2023-12-21 08:50:24,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:50:24,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:50:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:50:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:50:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:50:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:50:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:50:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:50:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:50:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:50:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:50:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:50:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:50:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 08:50:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:50:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 08:50:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:50:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:50:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 08:50:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 08:50:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 08:50:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 08:50:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 08:50:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-21 08:50:24,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:50:24,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074424030] [2023-12-21 08:50:24,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074424030] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:50:24,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919192070] [2023-12-21 08:50:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:50:24,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:50:24,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:50:24,962 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) [2023-12-21 08:50:24,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-21 08:50:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:50:25,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 2031 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 08:50:25,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:50:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-21 08:50:25,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 08:50:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-21 08:50:25,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919192070] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 08:50:25,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 08:50:25,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 22 [2023-12-21 08:50:25,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050529793] [2023-12-21 08:50:25,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 08:50:25,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 08:50:25,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:50:25,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 08:50:25,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2023-12-21 08:50:25,855 INFO L87 Difference]: Start difference. First operand 23264 states and 38338 transitions. Second operand has 22 states, 21 states have (on average 11.619047619047619) internal successors, (244), 16 states have internal predecessors, (244), 8 states have call successors, (52), 8 states have call predecessors, (52), 11 states have return successors, (52), 10 states have call predecessors, (52), 8 states have call successors, (52) [2023-12-21 08:50:57,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:50:57,795 INFO L93 Difference]: Finished difference Result 81590 states and 142449 transitions. [2023-12-21 08:50:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 08:50:57,796 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 11.619047619047619) internal successors, (244), 16 states have internal predecessors, (244), 8 states have call successors, (52), 8 states have call predecessors, (52), 11 states have return successors, (52), 10 states have call predecessors, (52), 8 states have call successors, (52) Word has length 193 [2023-12-21 08:50:57,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:50:58,115 INFO L225 Difference]: With dead ends: 81590 [2023-12-21 08:50:58,115 INFO L226 Difference]: Without dead ends: 58447 [2023-12-21 08:50:58,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 433 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=464, Invalid=2188, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 08:50:58,206 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 6113 mSDsluCounter, 8241 mSDsCounter, 0 mSdLazyCounter, 19400 mSolverCounterSat, 2013 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6127 SdHoareTripleChecker+Valid, 9136 SdHoareTripleChecker+Invalid, 21413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2013 IncrementalHoareTripleChecker+Valid, 19400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-21 08:50:58,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6127 Valid, 9136 Invalid, 21413 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2013 Valid, 19400 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-21 08:50:58,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58447 states. [2023-12-21 08:51:10,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58447 to 47015. [2023-12-21 08:51:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47015 states, 34625 states have (on average 1.5230902527075811) internal successors, (52737), 36559 states have internal predecessors, (52737), 9992 states have call successors, (9992), 1699 states have call predecessors, (9992), 2397 states have return successors, (15266), 10007 states have call predecessors, (15266), 9987 states have call successors, (15266) [2023-12-21 08:51:10,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47015 states to 47015 states and 77995 transitions. [2023-12-21 08:51:10,816 INFO L78 Accepts]: Start accepts. Automaton has 47015 states and 77995 transitions. Word has length 193 [2023-12-21 08:51:10,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:51:10,816 INFO L495 AbstractCegarLoop]: Abstraction has 47015 states and 77995 transitions. [2023-12-21 08:51:10,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 11.619047619047619) internal successors, (244), 16 states have internal predecessors, (244), 8 states have call successors, (52), 8 states have call predecessors, (52), 11 states have return successors, (52), 10 states have call predecessors, (52), 8 states have call successors, (52) [2023-12-21 08:51:10,816 INFO L276 IsEmpty]: Start isEmpty. Operand 47015 states and 77995 transitions. [2023-12-21 08:51:10,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-21 08:51:10,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:51:10,839 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:51:10,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-21 08:51:11,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-21 08:51:11,047 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:51:11,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:51:11,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1591265725, now seen corresponding path program 1 times [2023-12-21 08:51:11,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:51:11,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393099444] [2023-12-21 08:51:11,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:51:11,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:51:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:51:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:51:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:51:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:51:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:51:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:51:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 08:51:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:51:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:51:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 08:51:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:51:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:51:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 08:51:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 08:51:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 08:51:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:51:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 08:51:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 08:51:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 08:51:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 08:51:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:51:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:51:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:51:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:51:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:51:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:51:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 08:51:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-21 08:51:11,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:51:11,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393099444] [2023-12-21 08:51:11,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393099444] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:51:11,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866408429] [2023-12-21 08:51:11,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:51:11,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:51:11,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:51:11,502 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:51:11,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-21 08:51:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:11,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 2431 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:51:11,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:51:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-12-21 08:51:11,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:51:11,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866408429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:51:11,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:51:11,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-21 08:51:11,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761454468] [2023-12-21 08:51:11,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:51:11,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 08:51:11,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:51:11,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 08:51:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:51:11,917 INFO L87 Difference]: Start difference. First operand 47015 states and 77995 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-21 08:51:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:51:29,703 INFO L93 Difference]: Finished difference Result 115350 states and 192914 transitions. [2023-12-21 08:51:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 08:51:29,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 241 [2023-12-21 08:51:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:51:30,075 INFO L225 Difference]: With dead ends: 115350 [2023-12-21 08:51:30,075 INFO L226 Difference]: Without dead ends: 68497 [2023-12-21 08:51:30,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:51:30,238 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 829 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:51:30,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1555 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:51:30,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68497 states. [2023-12-21 08:51:47,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68497 to 68495. [2023-12-21 08:51:47,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68495 states, 50743 states have (on average 1.5199140768184773) internal successors, (77125), 53557 states have internal predecessors, (77125), 14178 states have call successors, (14178), 2571 states have call predecessors, (14178), 3573 states have return successors, (22295), 14174 states have call predecessors, (22295), 14173 states have call successors, (22295) [2023-12-21 08:51:47,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68495 states to 68495 states and 113598 transitions. [2023-12-21 08:51:47,799 INFO L78 Accepts]: Start accepts. Automaton has 68495 states and 113598 transitions. Word has length 241 [2023-12-21 08:51:47,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:51:47,799 INFO L495 AbstractCegarLoop]: Abstraction has 68495 states and 113598 transitions. [2023-12-21 08:51:47,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-21 08:51:47,799 INFO L276 IsEmpty]: Start isEmpty. Operand 68495 states and 113598 transitions. [2023-12-21 08:51:47,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-12-21 08:51:47,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:51:47,849 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:51:47,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-21 08:51:48,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:51:48,057 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:51:48,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:51:48,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1927194073, now seen corresponding path program 1 times [2023-12-21 08:51:48,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:51:48,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891199019] [2023-12-21 08:51:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:51:48,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:51:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:51:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:51:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:51:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:51:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:51:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:51:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 08:51:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:51:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:51:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 08:51:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:51:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:51:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 08:51:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 08:51:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 08:51:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:51:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 08:51:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 08:51:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 08:51:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 08:51:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:51:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:51:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:51:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:51:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:51:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:51:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-21 08:51:48,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:51:48,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891199019] [2023-12-21 08:51:48,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891199019] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:51:48,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773621256] [2023-12-21 08:51:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:51:48,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:51:48,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:51:48,649 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:51:48,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-21 08:51:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:51:49,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 2417 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:51:49,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:51:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-21 08:51:49,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:51:49,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773621256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:51:49,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:51:49,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-12-21 08:51:49,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140959685] [2023-12-21 08:51:49,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:51:49,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:51:49,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:51:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:51:49,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:51:49,067 INFO L87 Difference]: Start difference. First operand 68495 states and 113598 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-21 08:52:08,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:52:08,312 INFO L93 Difference]: Finished difference Result 139922 states and 235720 transitions. [2023-12-21 08:52:08,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:52:08,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 239 [2023-12-21 08:52:08,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:52:08,960 INFO L225 Difference]: With dead ends: 139922 [2023-12-21 08:52:08,960 INFO L226 Difference]: Without dead ends: 71615 [2023-12-21 08:52:09,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:52:09,300 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 213 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:52:09,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2277 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:52:09,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71615 states. [2023-12-21 08:52:27,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71615 to 71615. [2023-12-21 08:52:27,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71615 states, 53783 states have (on average 1.5425878065559748) internal successors, (82965), 56597 states have internal predecessors, (82965), 14178 states have call successors, (14178), 2651 states have call predecessors, (14178), 3653 states have return successors, (22295), 14174 states have call predecessors, (22295), 14173 states have call successors, (22295) [2023-12-21 08:52:27,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71615 states to 71615 states and 119438 transitions. [2023-12-21 08:52:27,752 INFO L78 Accepts]: Start accepts. Automaton has 71615 states and 119438 transitions. Word has length 239 [2023-12-21 08:52:27,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:52:27,752 INFO L495 AbstractCegarLoop]: Abstraction has 71615 states and 119438 transitions. [2023-12-21 08:52:27,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-21 08:52:27,753 INFO L276 IsEmpty]: Start isEmpty. Operand 71615 states and 119438 transitions. [2023-12-21 08:52:27,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-21 08:52:27,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:52:27,797 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:52:27,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-21 08:52:28,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-12-21 08:52:28,004 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:52:28,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:52:28,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2054534733, now seen corresponding path program 1 times [2023-12-21 08:52:28,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:52:28,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698834739] [2023-12-21 08:52:28,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:52:28,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:52:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:52:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:52:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:52:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:52:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:52:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:52:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 08:52:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:52:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:52:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 08:52:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:52:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 08:52:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 08:52:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 08:52:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:52:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 08:52:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 08:52:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 08:52:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 08:52:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 08:52:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:52:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:52:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:52:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:52:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:52:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:52:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 17 proven. 23 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-12-21 08:52:28,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:52:28,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698834739] [2023-12-21 08:52:28,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698834739] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:52:28,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336875265] [2023-12-21 08:52:28,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:52:28,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:52:28,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:52:28,637 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:52:28,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-21 08:52:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:52:29,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:52:29,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:52:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-12-21 08:52:29,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:52:29,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336875265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:52:29,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:52:29,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-12-21 08:52:29,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157619942] [2023-12-21 08:52:29,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:52:29,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:52:29,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:52:29,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:52:29,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:52:29,076 INFO L87 Difference]: Start difference. First operand 71615 states and 119438 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-21 08:52:48,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:52:48,459 INFO L93 Difference]: Finished difference Result 146162 states and 247172 transitions. [2023-12-21 08:52:48,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:52:48,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 244 [2023-12-21 08:52:48,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:52:49,070 INFO L225 Difference]: With dead ends: 146162 [2023-12-21 08:52:49,070 INFO L226 Difference]: Without dead ends: 74735 [2023-12-21 08:52:49,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:52:49,318 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 211 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:52:49,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2277 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:52:49,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74735 states. [2023-12-21 08:53:07,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74735 to 74735. [2023-12-21 08:53:07,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74735 states, 56823 states have (on average 1.5628354715520123) internal successors, (88805), 59637 states have internal predecessors, (88805), 14178 states have call successors, (14178), 2731 states have call predecessors, (14178), 3733 states have return successors, (22295), 14174 states have call predecessors, (22295), 14173 states have call successors, (22295) [2023-12-21 08:53:07,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74735 states to 74735 states and 125278 transitions. [2023-12-21 08:53:07,972 INFO L78 Accepts]: Start accepts. Automaton has 74735 states and 125278 transitions. Word has length 244 [2023-12-21 08:53:07,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:53:07,974 INFO L495 AbstractCegarLoop]: Abstraction has 74735 states and 125278 transitions. [2023-12-21 08:53:07,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-21 08:53:07,974 INFO L276 IsEmpty]: Start isEmpty. Operand 74735 states and 125278 transitions. [2023-12-21 08:53:08,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-21 08:53:08,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:53:08,019 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:53:08,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-21 08:53:08,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:53:08,228 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:53:08,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:53:08,228 INFO L85 PathProgramCache]: Analyzing trace with hash 844642268, now seen corresponding path program 1 times [2023-12-21 08:53:08,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:53:08,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132141210] [2023-12-21 08:53:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:53:08,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:53:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:08,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:53:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:08,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:53:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:08,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:53:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:08,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:53:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:08,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:53:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:08,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:53:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:08,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:53:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:53:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:53:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:53:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:53:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 08:53:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:53:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 08:53:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:53:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:53:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 08:53:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 08:53:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 08:53:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:53:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:53:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:53:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:53:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:53:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 26 proven. 31 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-21 08:53:09,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:53:09,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132141210] [2023-12-21 08:53:09,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132141210] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:53:09,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360653132] [2023-12-21 08:53:09,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:53:09,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:53:09,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:53:09,376 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:53:09,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-21 08:53:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:53:09,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 2356 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:53:09,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:53:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-21 08:53:09,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:53:09,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360653132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:53:09,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:53:09,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [17] total 18 [2023-12-21 08:53:09,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112268577] [2023-12-21 08:53:09,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:53:09,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 08:53:09,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:53:09,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 08:53:09,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:53:09,803 INFO L87 Difference]: Start difference. First operand 74735 states and 125278 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 08:53:47,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:53:47,526 INFO L93 Difference]: Finished difference Result 222563 states and 378758 transitions. [2023-12-21 08:53:47,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 08:53:47,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 216 [2023-12-21 08:53:47,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:53:48,792 INFO L225 Difference]: With dead ends: 222563 [2023-12-21 08:53:48,792 INFO L226 Difference]: Without dead ends: 147998 [2023-12-21 08:53:49,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:53:49,103 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 823 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:53:49,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 2348 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:53:49,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147998 states. [2023-12-21 08:54:24,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147998 to 147971. [2023-12-21 08:54:24,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147971 states, 112655 states have (on average 1.559398162531623) internal successors, (175674), 118255 states have internal predecessors, (175674), 27868 states have call successors, (27868), 5440 states have call predecessors, (27868), 7447 states have return successors, (46919), 27891 states have call predecessors, (46919), 27863 states have call successors, (46919) [2023-12-21 08:54:26,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147971 states to 147971 states and 250461 transitions. [2023-12-21 08:54:26,478 INFO L78 Accepts]: Start accepts. Automaton has 147971 states and 250461 transitions. Word has length 216 [2023-12-21 08:54:26,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:54:26,479 INFO L495 AbstractCegarLoop]: Abstraction has 147971 states and 250461 transitions. [2023-12-21 08:54:26,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 08:54:26,479 INFO L276 IsEmpty]: Start isEmpty. Operand 147971 states and 250461 transitions. [2023-12-21 08:54:26,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-21 08:54:26,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:54:26,749 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:54:26,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-21 08:54:26,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:54:26,956 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:54:26,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:54:26,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2097634587, now seen corresponding path program 1 times [2023-12-21 08:54:26,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:54:26,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351149252] [2023-12-21 08:54:26,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:54:26,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:54:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:54:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:54:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:54:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:54:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:54:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:54:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 08:54:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:54:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:54:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:54:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:54:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:54:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:54:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:54:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 08:54:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 08:54:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 08:54:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 08:54:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:54:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:54:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:54:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:54:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:54:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 31 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 08:54:27,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:54:27,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351149252] [2023-12-21 08:54:27,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351149252] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:54:27,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368791971] [2023-12-21 08:54:27,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:54:27,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:54:27,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:54:27,915 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:54:27,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-21 08:54:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:54:28,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 2328 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 08:54:28,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:54:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 24 proven. 36 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 08:54:28,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 08:54:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-12-21 08:54:28,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368791971] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 08:54:28,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 08:54:28,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 5, 5] total 25 [2023-12-21 08:54:28,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91126846] [2023-12-21 08:54:28,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 08:54:28,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 08:54:28,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:54:28,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 08:54:28,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2023-12-21 08:54:28,656 INFO L87 Difference]: Start difference. First operand 147971 states and 250461 transitions. Second operand has 25 states, 24 states have (on average 10.5) internal successors, (252), 21 states have internal predecessors, (252), 10 states have call successors, (52), 8 states have call predecessors, (52), 10 states have return successors, (49), 11 states have call predecessors, (49), 10 states have call successors, (49)