/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 22:23:49,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 22:23:49,423 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 22:23:49,427 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 22:23:49,428 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 22:23:49,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 22:23:49,450 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 22:23:49,450 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 22:23:49,450 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 22:23:49,453 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 22:23:49,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 22:23:49,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 22:23:49,454 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 22:23:49,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 22:23:49,455 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 22:23:49,455 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 22:23:49,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 22:23:49,456 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 22:23:49,456 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 22:23:49,456 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 22:23:49,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 22:23:49,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 22:23:49,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 22:23:49,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 22:23:49,457 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 22:23:49,457 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 22:23:49,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 22:23:49,458 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 22:23:49,458 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 22:23:49,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 22:23:49,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 22:23:49,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 22:23:49,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:23:49,460 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 22:23:49,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 22:23:49,460 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 22:23:49,460 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 22:23:49,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 22:23:49,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 22:23:49,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 22:23:49,460 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 22:23:49,461 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 22:23:49,461 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 22:23:49,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 22:23:49,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 22:23:49,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 22:23:49,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 22:23:49,695 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 22:23:49,695 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 22:23:49,696 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product11.cil.c [2023-12-19 22:23:50,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 22:23:50,905 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 22:23:50,905 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product11.cil.c [2023-12-19 22:23:50,927 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e91535f98/aee5ec44c3c24453ad9beb70cfe6c7e3/FLAG03e9d0901 [2023-12-19 22:23:50,940 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e91535f98/aee5ec44c3c24453ad9beb70cfe6c7e3 [2023-12-19 22:23:50,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 22:23:50,942 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 22:23:50,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 22:23:50,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 22:23:50,948 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 22:23:50,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:23:50" (1/1) ... [2023-12-19 22:23:50,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7671b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:50, skipping insertion in model container [2023-12-19 22:23:50,949 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:23:50" (1/1) ... [2023-12-19 22:23:51,010 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 22:23:51,138 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_spec2_product11.cil.c[1545,1558] [2023-12-19 22:23:51,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:23:51,417 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 22:23:51,423 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2023-12-19 22:23:51,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [57] [2023-12-19 22:23:51,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [421] [2023-12-19 22:23:51,427 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [541] [2023-12-19 22:23:51,427 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [907] [2023-12-19 22:23:51,428 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2442] [2023-12-19 22:23:51,428 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [2533] [2023-12-19 22:23:51,428 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2714] [2023-12-19 22:23:51,428 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3375] [2023-12-19 22:23:51,429 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3387] [2023-12-19 22:23:51,431 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_spec2_product11.cil.c[1545,1558] [2023-12-19 22:23:51,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:23:51,533 INFO L206 MainTranslator]: Completed translation [2023-12-19 22:23:51,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:51 WrapperNode [2023-12-19 22:23:51,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 22:23:51,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 22:23:51,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 22:23:51,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 22:23:51,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:51" (1/1) ... [2023-12-19 22:23:51,560 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:51" (1/1) ... [2023-12-19 22:23:51,611 INFO L138 Inliner]: procedures = 93, calls = 338, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1128 [2023-12-19 22:23:51,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 22:23:51,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 22:23:51,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 22:23:51,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 22:23:51,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:51" (1/1) ... [2023-12-19 22:23:51,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:51" (1/1) ... [2023-12-19 22:23:51,624 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:51" (1/1) ... [2023-12-19 22:23:51,639 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]. [2023-12-19 22:23:51,640 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:51" (1/1) ... [2023-12-19 22:23:51,640 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:51" (1/1) ... [2023-12-19 22:23:51,651 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:51" (1/1) ... [2023-12-19 22:23:51,658 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:51" (1/1) ... [2023-12-19 22:23:51,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:51" (1/1) ... [2023-12-19 22:23:51,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:51" (1/1) ... [2023-12-19 22:23:51,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 22:23:51,670 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 22:23:51,670 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 22:23:51,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 22:23:51,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:51" (1/1) ... [2023-12-19 22:23:51,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:23:51,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:23:51,701 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) [2023-12-19 22:23:51,721 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 [2023-12-19 22:23:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 22:23:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-12-19 22:23:51,725 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-12-19 22:23:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-19 22:23:51,725 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-19 22:23:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-12-19 22:23:51,725 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-12-19 22:23:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-19 22:23:51,725 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-19 22:23:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-19 22:23:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-19 22:23:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-19 22:23:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-19 22:23:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-19 22:23:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-19 22:23:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-12-19 22:23:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-12-19 22:23:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-19 22:23:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-19 22:23:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-19 22:23:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-19 22:23:51,727 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-19 22:23:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-19 22:23:51,727 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-19 22:23:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-19 22:23:51,727 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-12-19 22:23:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-12-19 22:23:51,727 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-19 22:23:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-19 22:23:51,727 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-12-19 22:23:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-12-19 22:23:51,727 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-19 22:23:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-19 22:23:51,728 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-19 22:23:51,728 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-19 22:23:51,728 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-19 22:23:51,728 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-19 22:23:51,728 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-19 22:23:51,728 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-19 22:23:51,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 22:23:51,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 22:23:51,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 22:23:51,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 22:23:51,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 22:23:51,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 22:23:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-19 22:23:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-19 22:23:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-19 22:23:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-19 22:23:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-19 22:23:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-19 22:23:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-19 22:23:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-19 22:23:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-19 22:23:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-19 22:23:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-19 22:23:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-19 22:23:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-19 22:23:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-19 22:23:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-19 22:23:51,730 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-19 22:23:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-19 22:23:51,730 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-19 22:23:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-19 22:23:51,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-19 22:23:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 22:23:51,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 22:23:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-19 22:23:51,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-19 22:23:51,901 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 22:23:51,905 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 22:23:52,644 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 22:23:52,762 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 22:23:52,763 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 22:23:52,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:23:52 BoogieIcfgContainer [2023-12-19 22:23:52,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 22:23:52,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 22:23:52,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 22:23:52,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 22:23:52,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 10:23:50" (1/3) ... [2023-12-19 22:23:52,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dedb76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:23:52, skipping insertion in model container [2023-12-19 22:23:52,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:51" (2/3) ... [2023-12-19 22:23:52,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dedb76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:23:52, skipping insertion in model container [2023-12-19 22:23:52,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:23:52" (3/3) ... [2023-12-19 22:23:52,770 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product11.cil.c [2023-12-19 22:23:52,782 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 22:23:52,783 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 22:23:52,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 22:23:52,832 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;@7ce8cd95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 22:23:52,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 22:23:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 534 states, 415 states have (on average 1.730120481927711) internal successors, (718), 436 states have internal predecessors, (718), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-19 22:23:52,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 22:23:52,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:23:52,854 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-19 22:23:52,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:23:52,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:23:52,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1750579373, now seen corresponding path program 1 times [2023-12-19 22:23:52,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:23:52,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999155324] [2023-12-19 22:23:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:52,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:23:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:53,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:23:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:53,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:53,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:23:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:53,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:23:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:23:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:23:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:23:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-19 22:23:54,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:23:54,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999155324] [2023-12-19 22:23:54,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999155324] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:23:54,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570769577] [2023-12-19 22:23:54,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:54,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:23:54,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:23:54,264 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) [2023-12-19 22:23:54,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 22:23:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 22:23:54,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:23:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:23:54,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:23:54,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570769577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:23:54,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:23:54,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [16] total 16 [2023-12-19 22:23:54,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854969350] [2023-12-19 22:23:54,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:23:54,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 22:23:54,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:23:54,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 22:23:54,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:23:54,590 INFO L87 Difference]: Start difference. First operand has 534 states, 415 states have (on average 1.730120481927711) internal successors, (718), 436 states have internal predecessors, (718), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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) [2023-12-19 22:23:54,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:23:54,662 INFO L93 Difference]: Finished difference Result 552 states and 933 transitions. [2023-12-19 22:23:54,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 22:23:54,667 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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 91 [2023-12-19 22:23:54,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:23:54,689 INFO L225 Difference]: With dead ends: 552 [2023-12-19 22:23:54,689 INFO L226 Difference]: Without dead ends: 530 [2023-12-19 22:23:54,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:23:54,694 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:23:54,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 884 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:23:54,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2023-12-19 22:23:54,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2023-12-19 22:23:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 413 states have (on average 1.721549636803874) internal successors, (711), 432 states have internal predecessors, (711), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:23:54,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 894 transitions. [2023-12-19 22:23:54,778 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 894 transitions. Word has length 91 [2023-12-19 22:23:54,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:23:54,779 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 894 transitions. [2023-12-19 22:23:54,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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) [2023-12-19 22:23:54,780 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 894 transitions. [2023-12-19 22:23:54,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 22:23:54,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:23:54,789 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-19 22:23:54,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 22:23:54,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 22:23:54,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:23:54,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:23:54,991 INFO L85 PathProgramCache]: Analyzing trace with hash 878977534, now seen corresponding path program 1 times [2023-12-19 22:23:54,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:23:54,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445380105] [2023-12-19 22:23:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:54,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:23:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:55,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:23:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:55,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:55,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:23:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:55,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:23:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:55,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:55,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:55,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:55,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:55,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:23:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:55,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:55,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:55,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:55,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:23:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:55,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:23:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-19 22:23:55,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:23:55,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445380105] [2023-12-19 22:23:55,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445380105] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:23:55,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567015808] [2023-12-19 22:23:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:55,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:23:55,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:23:55,766 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) [2023-12-19 22:23:55,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 22:23:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:56,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 1403 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:23:56,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:23:56,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:23:56,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:23:56,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567015808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:23:56,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:23:56,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2023-12-19 22:23:56,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184167363] [2023-12-19 22:23:56,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:23:56,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:23:56,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:23:56,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:23:56,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:23:56,118 INFO L87 Difference]: Start difference. First operand 530 states and 894 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:23:56,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:23:56,226 INFO L93 Difference]: Finished difference Result 1048 states and 1770 transitions. [2023-12-19 22:23:56,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 22:23:56,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 92 [2023-12-19 22:23:56,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:23:56,232 INFO L225 Difference]: With dead ends: 1048 [2023-12-19 22:23:56,232 INFO L226 Difference]: Without dead ends: 530 [2023-12-19 22:23:56,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:23:56,239 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 14 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:23:56,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2602 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:23:56,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2023-12-19 22:23:56,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2023-12-19 22:23:56,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 413 states have (on average 1.7191283292978208) internal successors, (710), 432 states have internal predecessors, (710), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:23:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 893 transitions. [2023-12-19 22:23:56,283 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 893 transitions. Word has length 92 [2023-12-19 22:23:56,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:23:56,283 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 893 transitions. [2023-12-19 22:23:56,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:23:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 893 transitions. [2023-12-19 22:23:56,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 22:23:56,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:23:56,287 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:23:56,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 22:23:56,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 22:23:56,491 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:23:56,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:23:56,491 INFO L85 PathProgramCache]: Analyzing trace with hash -12429094, now seen corresponding path program 1 times [2023-12-19 22:23:56,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:23:56,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068468635] [2023-12-19 22:23:56,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:56,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:23:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:56,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:23:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:56,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:56,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:23:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:56,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:23:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:57,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:57,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:57,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:57,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:57,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:23:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:57,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:57,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:57,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:57,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:23:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:57,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:23:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-19 22:23:57,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:23:57,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068468635] [2023-12-19 22:23:57,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068468635] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:23:57,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551454847] [2023-12-19 22:23:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:57,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:23:57,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:23:57,206 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) [2023-12-19 22:23:57,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 22:23:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:57,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:23:57,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:23:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:23:57,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:23:57,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551454847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:23:57,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:23:57,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2023-12-19 22:23:57,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107515040] [2023-12-19 22:23:57,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:23:57,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:23:57,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:23:57,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:23:57,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:23:57,500 INFO L87 Difference]: Start difference. First operand 530 states and 893 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:23:57,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:23:57,575 INFO L93 Difference]: Finished difference Result 1048 states and 1769 transitions. [2023-12-19 22:23:57,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 22:23:57,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 93 [2023-12-19 22:23:57,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:23:57,580 INFO L225 Difference]: With dead ends: 1048 [2023-12-19 22:23:57,580 INFO L226 Difference]: Without dead ends: 530 [2023-12-19 22:23:57,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:23:57,583 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 12 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:23:57,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2602 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:23:57,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2023-12-19 22:23:57,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2023-12-19 22:23:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 413 states have (on average 1.7167070217917675) internal successors, (709), 432 states have internal predecessors, (709), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:23:57,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 892 transitions. [2023-12-19 22:23:57,607 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 892 transitions. Word has length 93 [2023-12-19 22:23:57,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:23:57,607 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 892 transitions. [2023-12-19 22:23:57,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:23:57,607 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 892 transitions. [2023-12-19 22:23:57,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 22:23:57,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:23:57,610 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-19 22:23:57,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 22:23:57,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:23:57,818 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:23:57,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:23:57,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1498413062, now seen corresponding path program 1 times [2023-12-19 22:23:57,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:23:57,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015168205] [2023-12-19 22:23:57,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:57,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:23:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:57,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:23:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:57,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:23:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:23:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:23:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:23:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:23:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-19 22:23:58,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:23:58,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015168205] [2023-12-19 22:23:58,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015168205] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:23:58,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945934666] [2023-12-19 22:23:58,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:58,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:23:58,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:23:58,449 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) [2023-12-19 22:23:58,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 22:23:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:23:58,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:23:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:23:58,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:23:58,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945934666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:23:58,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:23:58,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2023-12-19 22:23:58,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255325517] [2023-12-19 22:23:58,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:23:58,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:23:58,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:23:58,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:23:58,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:23:58,752 INFO L87 Difference]: Start difference. First operand 530 states and 892 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:23:58,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:23:58,823 INFO L93 Difference]: Finished difference Result 1048 states and 1768 transitions. [2023-12-19 22:23:58,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 22:23:58,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 94 [2023-12-19 22:23:58,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:23:58,827 INFO L225 Difference]: With dead ends: 1048 [2023-12-19 22:23:58,827 INFO L226 Difference]: Without dead ends: 530 [2023-12-19 22:23:58,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:23:58,837 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 10 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:23:58,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2602 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:23:58,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2023-12-19 22:23:58,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2023-12-19 22:23:58,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 413 states have (on average 1.7142857142857142) internal successors, (708), 432 states have internal predecessors, (708), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:23:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 891 transitions. [2023-12-19 22:23:58,869 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 891 transitions. Word has length 94 [2023-12-19 22:23:58,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:23:58,869 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 891 transitions. [2023-12-19 22:23:58,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:23:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 891 transitions. [2023-12-19 22:23:58,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 22:23:58,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:23:58,875 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:23:58,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 22:23:59,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:23:59,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:23:59,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:23:59,082 INFO L85 PathProgramCache]: Analyzing trace with hash 58541910, now seen corresponding path program 1 times [2023-12-19 22:23:59,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:23:59,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021590877] [2023-12-19 22:23:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:59,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:23:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:23:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 22:23:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:23:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:23:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:23:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:23:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-19 22:23:59,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:23:59,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021590877] [2023-12-19 22:23:59,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021590877] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:23:59,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980635717] [2023-12-19 22:23:59,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:59,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:23:59,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:23:59,650 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) [2023-12-19 22:23:59,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 22:23:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:23:59,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:23:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:23:59,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:23:59,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980635717] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:23:59,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:23:59,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2023-12-19 22:23:59,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205146619] [2023-12-19 22:23:59,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:23:59,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:23:59,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:23:59,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:23:59,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:23:59,929 INFO L87 Difference]: Start difference. First operand 530 states and 891 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:23:59,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:23:59,989 INFO L93 Difference]: Finished difference Result 1048 states and 1767 transitions. [2023-12-19 22:23:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 22:23:59,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 95 [2023-12-19 22:23:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:23:59,992 INFO L225 Difference]: With dead ends: 1048 [2023-12-19 22:23:59,992 INFO L226 Difference]: Without dead ends: 530 [2023-12-19 22:23:59,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:23:59,995 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 8 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2602 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 [2023-12-19 22:23:59,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2602 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:23:59,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2023-12-19 22:24:00,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2023-12-19 22:24:00,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 413 states have (on average 1.7118644067796611) internal successors, (707), 432 states have internal predecessors, (707), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:24:00,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 890 transitions. [2023-12-19 22:24:00,008 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 890 transitions. Word has length 95 [2023-12-19 22:24:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:00,008 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 890 transitions. [2023-12-19 22:24:00,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:00,009 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 890 transitions. [2023-12-19 22:24:00,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-19 22:24:00,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:00,011 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:24:00,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 22:24:00,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:24:00,218 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:00,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:00,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1457323510, now seen corresponding path program 1 times [2023-12-19 22:24:00,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:00,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845140942] [2023-12-19 22:24:00,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:00,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:24:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:24:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-19 22:24:00,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:00,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845140942] [2023-12-19 22:24:00,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845140942] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:24:00,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916861637] [2023-12-19 22:24:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:00,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:24:00,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:24:00,857 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) [2023-12-19 22:24:00,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 22:24:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:24:01,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:24:01,170 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:01,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:24:01,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916861637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:01,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:24:01,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2023-12-19 22:24:01,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627956021] [2023-12-19 22:24:01,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:01,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:24:01,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:01,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:24:01,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:24:01,172 INFO L87 Difference]: Start difference. First operand 530 states and 890 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:01,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:01,224 INFO L93 Difference]: Finished difference Result 1048 states and 1766 transitions. [2023-12-19 22:24:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 22:24:01,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 96 [2023-12-19 22:24:01,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:01,227 INFO L225 Difference]: With dead ends: 1048 [2023-12-19 22:24:01,227 INFO L226 Difference]: Without dead ends: 530 [2023-12-19 22:24:01,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:24:01,229 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 6 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:01,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2602 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:24:01,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2023-12-19 22:24:01,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2023-12-19 22:24:01,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 413 states have (on average 1.7094430992736078) internal successors, (706), 432 states have internal predecessors, (706), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:24:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 889 transitions. [2023-12-19 22:24:01,246 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 889 transitions. Word has length 96 [2023-12-19 22:24:01,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:01,246 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 889 transitions. [2023-12-19 22:24:01,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:01,246 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 889 transitions. [2023-12-19 22:24:01,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-19 22:24:01,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:01,248 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-19 22:24:01,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 22:24:01,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:24:01,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:01,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash -2047269422, now seen corresponding path program 1 times [2023-12-19 22:24:01,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:01,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471810347] [2023-12-19 22:24:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:01,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:24:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:01,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:01,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471810347] [2023-12-19 22:24:01,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471810347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:01,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:01,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:01,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792681493] [2023-12-19 22:24:01,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:01,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:01,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:01,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:01,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:01,936 INFO L87 Difference]: Start difference. First operand 530 states and 889 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:05,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:05,994 INFO L93 Difference]: Finished difference Result 1264 states and 2162 transitions. [2023-12-19 22:24:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:24:05,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 97 [2023-12-19 22:24:05,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:05,999 INFO L225 Difference]: With dead ends: 1264 [2023-12-19 22:24:05,999 INFO L226 Difference]: Without dead ends: 786 [2023-12-19 22:24:06,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:24:06,001 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1079 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 3006 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 3207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 3006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:06,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1730 Invalid, 3207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 3006 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 22:24:06,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2023-12-19 22:24:06,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 530. [2023-12-19 22:24:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 413 states have (on average 1.6973365617433414) internal successors, (701), 432 states have internal predecessors, (701), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:24:06,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 884 transitions. [2023-12-19 22:24:06,091 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 884 transitions. Word has length 97 [2023-12-19 22:24:06,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:06,091 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 884 transitions. [2023-12-19 22:24:06,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:06,092 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 884 transitions. [2023-12-19 22:24:06,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 22:24:06,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:06,094 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-19 22:24:06,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 22:24:06,094 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:06,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:06,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1713720460, now seen corresponding path program 1 times [2023-12-19 22:24:06,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:06,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028380944] [2023-12-19 22:24:06,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:06,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:06,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:06,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:24:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:06,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:06,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:06,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:06,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:06,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:06,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:06,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:06,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:06,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:06,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:06,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:06,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028380944] [2023-12-19 22:24:06,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028380944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:06,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:06,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:06,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587646364] [2023-12-19 22:24:06,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:06,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:06,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:06,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:06,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:06,592 INFO L87 Difference]: Start difference. First operand 530 states and 884 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:10,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:10,583 INFO L93 Difference]: Finished difference Result 1264 states and 2157 transitions. [2023-12-19 22:24:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:24:10,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 98 [2023-12-19 22:24:10,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:10,588 INFO L225 Difference]: With dead ends: 1264 [2023-12-19 22:24:10,588 INFO L226 Difference]: Without dead ends: 786 [2023-12-19 22:24:10,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:24:10,590 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1068 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 2973 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 2973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:10,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1716 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 2973 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 22:24:10,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2023-12-19 22:24:10,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 530. [2023-12-19 22:24:10,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 413 states have (on average 1.685230024213075) internal successors, (696), 432 states have internal predecessors, (696), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:24:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 879 transitions. [2023-12-19 22:24:10,647 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 879 transitions. Word has length 98 [2023-12-19 22:24:10,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:10,648 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 879 transitions. [2023-12-19 22:24:10,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:10,648 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 879 transitions. [2023-12-19 22:24:10,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 22:24:10,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:10,650 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-19 22:24:10,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 22:24:10,650 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:10,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:10,650 INFO L85 PathProgramCache]: Analyzing trace with hash 636962135, now seen corresponding path program 1 times [2023-12-19 22:24:10,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:10,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377935528] [2023-12-19 22:24:10,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:10,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:11,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 22:24:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:11,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:11,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:11,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:11,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:11,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:11,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:11,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:11,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:11,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:11,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:11,103 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:11,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:11,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377935528] [2023-12-19 22:24:11,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377935528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:11,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:11,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:11,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480793777] [2023-12-19 22:24:11,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:11,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:11,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:11,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:11,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:11,105 INFO L87 Difference]: Start difference. First operand 530 states and 879 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:15,550 INFO L93 Difference]: Finished difference Result 1264 states and 2152 transitions. [2023-12-19 22:24:15,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:24:15,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 99 [2023-12-19 22:24:15,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:15,574 INFO L225 Difference]: With dead ends: 1264 [2023-12-19 22:24:15,574 INFO L226 Difference]: Without dead ends: 786 [2023-12-19 22:24:15,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:24:15,576 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1057 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 2957 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 3160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 2957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:15,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 1722 Invalid, 3160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 2957 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-19 22:24:15,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2023-12-19 22:24:15,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 530. [2023-12-19 22:24:15,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 413 states have (on average 1.6731234866828086) internal successors, (691), 432 states have internal predecessors, (691), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:24:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 874 transitions. [2023-12-19 22:24:15,636 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 874 transitions. Word has length 99 [2023-12-19 22:24:15,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:15,637 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 874 transitions. [2023-12-19 22:24:15,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:15,637 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 874 transitions. [2023-12-19 22:24:15,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 22:24:15,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:15,639 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:24:15,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 22:24:15,639 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:15,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:15,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1094277913, now seen corresponding path program 1 times [2023-12-19 22:24:15,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:15,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227442146] [2023-12-19 22:24:15,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:15,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:15,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:15,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:15,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:24:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:16,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:16,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227442146] [2023-12-19 22:24:16,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227442146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:16,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:16,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:16,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854723774] [2023-12-19 22:24:16,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:16,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:16,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:16,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:16,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:16,174 INFO L87 Difference]: Start difference. First operand 530 states and 874 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:20,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:20,390 INFO L93 Difference]: Finished difference Result 1264 states and 2147 transitions. [2023-12-19 22:24:20,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:24:20,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 100 [2023-12-19 22:24:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:20,416 INFO L225 Difference]: With dead ends: 1264 [2023-12-19 22:24:20,416 INFO L226 Difference]: Without dead ends: 786 [2023-12-19 22:24:20,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:24:20,418 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1477 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 2848 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 3199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 2848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:20,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 1669 Invalid, 3199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 2848 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 22:24:20,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2023-12-19 22:24:20,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 530. [2023-12-19 22:24:20,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 413 states have (on average 1.6610169491525424) internal successors, (686), 432 states have internal predecessors, (686), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:24:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 869 transitions. [2023-12-19 22:24:20,482 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 869 transitions. Word has length 100 [2023-12-19 22:24:20,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:20,482 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 869 transitions. [2023-12-19 22:24:20,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:20,482 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 869 transitions. [2023-12-19 22:24:20,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 22:24:20,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:20,484 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:24:20,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 22:24:20,484 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:20,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:20,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2117957318, now seen corresponding path program 1 times [2023-12-19 22:24:20,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:20,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023317991] [2023-12-19 22:24:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:20,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:20,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:20,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:20,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:20,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:24:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:20,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:20,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:20,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:20,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:21,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:21,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023317991] [2023-12-19 22:24:21,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023317991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:21,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:21,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:21,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724568101] [2023-12-19 22:24:21,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:21,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:21,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:21,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:21,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:21,013 INFO L87 Difference]: Start difference. First operand 530 states and 869 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:25,207 INFO L93 Difference]: Finished difference Result 1275 states and 2158 transitions. [2023-12-19 22:24:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:24:25,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 100 [2023-12-19 22:24:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:25,211 INFO L225 Difference]: With dead ends: 1275 [2023-12-19 22:24:25,211 INFO L226 Difference]: Without dead ends: 803 [2023-12-19 22:24:25,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:24:25,213 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1452 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:25,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1671 Invalid, 3116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:24:25,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-12-19 22:24:25,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 532. [2023-12-19 22:24:25,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 415 states have (on average 1.657831325301205) internal successors, (688), 434 states have internal predecessors, (688), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:24:25,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 871 transitions. [2023-12-19 22:24:25,282 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 871 transitions. Word has length 100 [2023-12-19 22:24:25,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:25,283 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 871 transitions. [2023-12-19 22:24:25,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:25,283 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 871 transitions. [2023-12-19 22:24:25,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 22:24:25,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:25,286 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:24:25,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 22:24:25,286 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:25,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:25,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1308202788, now seen corresponding path program 1 times [2023-12-19 22:24:25,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:25,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948547274] [2023-12-19 22:24:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:25,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:25,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:25,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:25,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:24:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:25,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:25,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:25,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:25,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:25,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:25,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:25,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:25,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:25,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:25,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:25,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948547274] [2023-12-19 22:24:25,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948547274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:25,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:25,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:25,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669225478] [2023-12-19 22:24:25,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:25,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:25,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:25,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:25,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:25,784 INFO L87 Difference]: Start difference. First operand 532 states and 871 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:30,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:30,038 INFO L93 Difference]: Finished difference Result 1270 states and 2148 transitions. [2023-12-19 22:24:30,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:24:30,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2023-12-19 22:24:30,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:30,059 INFO L225 Difference]: With dead ends: 1270 [2023-12-19 22:24:30,059 INFO L226 Difference]: Without dead ends: 790 [2023-12-19 22:24:30,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:24:30,065 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1049 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 3107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:30,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 1705 Invalid, 3107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 22:24:30,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2023-12-19 22:24:30,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 532. [2023-12-19 22:24:30,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 415 states have (on average 1.6457831325301204) internal successors, (683), 434 states have internal predecessors, (683), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:24:30,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 866 transitions. [2023-12-19 22:24:30,154 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 866 transitions. Word has length 101 [2023-12-19 22:24:30,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:30,154 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 866 transitions. [2023-12-19 22:24:30,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:30,154 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 866 transitions. [2023-12-19 22:24:30,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 22:24:30,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:30,156 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:24:30,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 22:24:30,157 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:30,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:30,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1531632807, now seen corresponding path program 1 times [2023-12-19 22:24:30,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:30,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910000910] [2023-12-19 22:24:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:30,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:30,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:30,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:30,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:30,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:24:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:30,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:30,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:30,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:30,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:30,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:30,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:30,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:30,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:30,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:30,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:30,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910000910] [2023-12-19 22:24:30,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910000910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:30,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:30,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:30,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577188591] [2023-12-19 22:24:30,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:30,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:30,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:30,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:30,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:30,593 INFO L87 Difference]: Start difference. First operand 532 states and 866 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:34,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:34,271 INFO L93 Difference]: Finished difference Result 1279 states and 2155 transitions. [2023-12-19 22:24:34,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:24:34,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2023-12-19 22:24:34,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:34,301 INFO L225 Difference]: With dead ends: 1279 [2023-12-19 22:24:34,301 INFO L226 Difference]: Without dead ends: 807 [2023-12-19 22:24:34,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:24:34,303 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 1467 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 2730 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 3080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 2730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:34,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 1660 Invalid, 3080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 2730 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 22:24:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2023-12-19 22:24:34,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 535. [2023-12-19 22:24:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 418 states have (on average 1.6411483253588517) internal successors, (686), 437 states have internal predecessors, (686), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:24:34,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 869 transitions. [2023-12-19 22:24:34,370 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 869 transitions. Word has length 101 [2023-12-19 22:24:34,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:34,370 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 869 transitions. [2023-12-19 22:24:34,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:34,371 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 869 transitions. [2023-12-19 22:24:34,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 22:24:34,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:34,374 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-19 22:24:34,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 22:24:34,374 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:34,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:34,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2124906174, now seen corresponding path program 1 times [2023-12-19 22:24:34,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:34,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306988518] [2023-12-19 22:24:34,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:34,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:34,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:34,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:34,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:34,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:24:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:34,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:34,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:34,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:34,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:34,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:34,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:34,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:34,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:34,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:34,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:34,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:34,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306988518] [2023-12-19 22:24:34,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306988518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:34,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:34,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 22:24:34,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555973321] [2023-12-19 22:24:34,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:34,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 22:24:34,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:34,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 22:24:34,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:24:34,896 INFO L87 Difference]: Start difference. First operand 535 states and 869 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 22:24:40,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:40,316 INFO L93 Difference]: Finished difference Result 1286 states and 2164 transitions. [2023-12-19 22:24:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 22:24:40,324 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 102 [2023-12-19 22:24:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:40,328 INFO L225 Difference]: With dead ends: 1286 [2023-12-19 22:24:40,328 INFO L226 Difference]: Without dead ends: 816 [2023-12-19 22:24:40,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:24:40,331 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1043 mSDsluCounter, 2587 mSDsCounter, 0 mSdLazyCounter, 5338 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 5540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 5338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:40,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 3038 Invalid, 5540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 5338 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-19 22:24:40,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-19 22:24:40,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 545. [2023-12-19 22:24:40,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 425 states have (on average 1.6376470588235295) internal successors, (696), 446 states have internal predecessors, (696), 95 states have call successors, (95), 23 states have call predecessors, (95), 24 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2023-12-19 22:24:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 883 transitions. [2023-12-19 22:24:40,402 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 883 transitions. Word has length 102 [2023-12-19 22:24:40,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:40,402 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 883 transitions. [2023-12-19 22:24:40,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 22:24:40,402 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 883 transitions. [2023-12-19 22:24:40,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 22:24:40,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:40,404 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-19 22:24:40,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 22:24:40,404 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:40,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:40,405 INFO L85 PathProgramCache]: Analyzing trace with hash -467778145, now seen corresponding path program 1 times [2023-12-19 22:24:40,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:40,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003683205] [2023-12-19 22:24:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:40,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:40,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:40,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:40,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:40,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:24:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:40,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:40,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:40,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:40,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:40,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:40,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:40,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:40,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:40,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:40,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:40,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:40,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003683205] [2023-12-19 22:24:40,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003683205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:40,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:40,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:40,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368455150] [2023-12-19 22:24:40,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:40,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:40,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:40,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:40,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:40,819 INFO L87 Difference]: Start difference. First operand 545 states and 883 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:45,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:45,198 INFO L93 Difference]: Finished difference Result 1303 states and 2188 transitions. [2023-12-19 22:24:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:24:45,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2023-12-19 22:24:45,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:45,203 INFO L225 Difference]: With dead ends: 1303 [2023-12-19 22:24:45,203 INFO L226 Difference]: Without dead ends: 829 [2023-12-19 22:24:45,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:24:45,205 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1026 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 2913 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 2913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:45,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 1727 Invalid, 3116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 2913 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 22:24:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-12-19 22:24:45,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 549. [2023-12-19 22:24:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 429 states have (on average 1.6293706293706294) internal successors, (699), 450 states have internal predecessors, (699), 95 states have call successors, (95), 23 states have call predecessors, (95), 24 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2023-12-19 22:24:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 886 transitions. [2023-12-19 22:24:45,305 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 886 transitions. Word has length 102 [2023-12-19 22:24:45,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:45,306 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 886 transitions. [2023-12-19 22:24:45,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 886 transitions. [2023-12-19 22:24:45,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 22:24:45,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:45,309 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-19 22:24:45,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 22:24:45,309 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:45,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:45,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1154615167, now seen corresponding path program 1 times [2023-12-19 22:24:45,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:45,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261221744] [2023-12-19 22:24:45,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:45,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:24:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,782 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:45,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:45,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261221744] [2023-12-19 22:24:45,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261221744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:45,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:45,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:45,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722916598] [2023-12-19 22:24:45,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:45,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:45,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:45,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:45,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:45,783 INFO L87 Difference]: Start difference. First operand 549 states and 886 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:49,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:49,554 INFO L93 Difference]: Finished difference Result 1349 states and 2236 transitions. [2023-12-19 22:24:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:24:49,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2023-12-19 22:24:49,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:49,573 INFO L225 Difference]: With dead ends: 1349 [2023-12-19 22:24:49,574 INFO L226 Difference]: Without dead ends: 794 [2023-12-19 22:24:49,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:24:49,578 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1780 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 2695 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 2695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:49,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 1608 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 2695 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:24:49,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-12-19 22:24:49,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 531. [2023-12-19 22:24:49,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 414 states have (on average 1.6376811594202898) internal successors, (678), 433 states have internal predecessors, (678), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:24:49,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 861 transitions. [2023-12-19 22:24:49,654 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 861 transitions. Word has length 102 [2023-12-19 22:24:49,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:49,655 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 861 transitions. [2023-12-19 22:24:49,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:49,655 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 861 transitions. [2023-12-19 22:24:49,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 22:24:49,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:49,657 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-19 22:24:49,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 22:24:49,657 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:49,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:49,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1780357986, now seen corresponding path program 1 times [2023-12-19 22:24:49,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:49,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095632688] [2023-12-19 22:24:49,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:49,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:49,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:49,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:50,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-19 22:24:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:50,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:50,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:50,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:50,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:50,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:50,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:50,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:50,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:50,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:50,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:50,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095632688] [2023-12-19 22:24:50,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095632688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:50,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:50,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:50,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727746090] [2023-12-19 22:24:50,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:50,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:50,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:50,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:50,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:50,132 INFO L87 Difference]: Start difference. First operand 531 states and 861 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:53,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:53,728 INFO L93 Difference]: Finished difference Result 1283 states and 2150 transitions. [2023-12-19 22:24:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:24:53,744 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-12-19 22:24:53,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:53,748 INFO L225 Difference]: With dead ends: 1283 [2023-12-19 22:24:53,748 INFO L226 Difference]: Without dead ends: 811 [2023-12-19 22:24:53,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:24:53,762 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1416 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 3069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:53,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1657 Invalid, 3069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 22:24:53,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2023-12-19 22:24:53,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 536. [2023-12-19 22:24:53,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 419 states have (on average 1.630071599045346) internal successors, (683), 438 states have internal predecessors, (683), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:24:53,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 866 transitions. [2023-12-19 22:24:53,837 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 866 transitions. Word has length 103 [2023-12-19 22:24:53,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:53,837 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 866 transitions. [2023-12-19 22:24:53,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:53,838 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 866 transitions. [2023-12-19 22:24:53,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 22:24:53,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:53,839 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:24:53,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 22:24:53,839 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:53,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:53,840 INFO L85 PathProgramCache]: Analyzing trace with hash 686669778, now seen corresponding path program 1 times [2023-12-19 22:24:53,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:53,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488078677] [2023-12-19 22:24:53,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:53,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:53,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:53,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:53,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:54,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:24:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:54,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:54,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:54,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:54,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:54,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:54,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:54,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:54,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:54,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:54,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:54,313 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:54,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:54,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488078677] [2023-12-19 22:24:54,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488078677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:54,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:54,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:54,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973312121] [2023-12-19 22:24:54,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:54,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:54,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:54,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:54,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:54,314 INFO L87 Difference]: Start difference. First operand 536 states and 866 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:58,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:58,329 INFO L93 Difference]: Finished difference Result 1284 states and 2148 transitions. [2023-12-19 22:24:58,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:24:58,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2023-12-19 22:24:58,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:58,333 INFO L225 Difference]: With dead ends: 1284 [2023-12-19 22:24:58,333 INFO L226 Difference]: Without dead ends: 792 [2023-12-19 22:24:58,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:24:58,335 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1808 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 3128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:58,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1887 Valid, 1611 Invalid, 3128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 2632 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:24:58,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2023-12-19 22:24:58,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 536. [2023-12-19 22:24:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 419 states have (on average 1.6205250596658711) internal successors, (679), 438 states have internal predecessors, (679), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-19 22:24:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 862 transitions. [2023-12-19 22:24:58,427 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 862 transitions. Word has length 104 [2023-12-19 22:24:58,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:58,427 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 862 transitions. [2023-12-19 22:24:58,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:58,427 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 862 transitions. [2023-12-19 22:24:58,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 22:24:58,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:58,429 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:24:58,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 22:24:58,429 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:58,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:58,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1829172244, now seen corresponding path program 1 times [2023-12-19 22:24:58,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:58,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319108553] [2023-12-19 22:24:58,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:58,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:58,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:58,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:58,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:58,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:24:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:58,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:58,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:58,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:58,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:58,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:58,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:58,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:59,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-19 22:24:59,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:59,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319108553] [2023-12-19 22:24:59,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319108553] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:24:59,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728663754] [2023-12-19 22:24:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:59,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:24:59,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:24:59,014 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) [2023-12-19 22:24:59,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 22:24:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:59,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:24:59,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:24:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 22:24:59,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:24:59,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728663754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:59,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:24:59,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2023-12-19 22:24:59,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189038344] [2023-12-19 22:24:59,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:59,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:24:59,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:59,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:24:59,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:24:59,360 INFO L87 Difference]: Start difference. First operand 536 states and 862 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 22:24:59,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:59,816 INFO L93 Difference]: Finished difference Result 1009 states and 1676 transitions. [2023-12-19 22:24:59,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:24:59,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 104 [2023-12-19 22:24:59,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:59,819 INFO L225 Difference]: With dead ends: 1009 [2023-12-19 22:24:59,819 INFO L226 Difference]: Without dead ends: 544 [2023-12-19 22:24:59,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:24:59,821 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 811 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:59,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 2089 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 22:24:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2023-12-19 22:24:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2023-12-19 22:24:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 426 states have (on average 1.6220657276995305) internal successors, (691), 445 states have internal predecessors, (691), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (90), 87 states have call predecessors, (90), 89 states have call successors, (90) [2023-12-19 22:24:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 875 transitions. [2023-12-19 22:24:59,902 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 875 transitions. Word has length 104 [2023-12-19 22:24:59,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:59,902 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 875 transitions. [2023-12-19 22:24:59,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 22:24:59,903 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 875 transitions. [2023-12-19 22:24:59,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-19 22:24:59,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:59,905 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:24:59,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 22:25:00,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:25:00,128 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:00,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:00,129 INFO L85 PathProgramCache]: Analyzing trace with hash 231075042, now seen corresponding path program 1 times [2023-12-19 22:25:00,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:00,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159876666] [2023-12-19 22:25:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:00,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:00,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:00,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:00,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:00,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:00,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:00,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:25:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:25:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:00,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:00,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:00,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:25:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:25:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:00,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:25:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 22:25:00,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:00,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159876666] [2023-12-19 22:25:00,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159876666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:00,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:25:00,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:25:00,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469884029] [2023-12-19 22:25:00,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:00,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:25:00,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:00,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:25:00,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:25:00,649 INFO L87 Difference]: Start difference. First operand 544 states and 875 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:25:05,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:05,196 INFO L93 Difference]: Finished difference Result 1280 states and 2188 transitions. [2023-12-19 22:25:05,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:25:05,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 106 [2023-12-19 22:25:05,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:05,209 INFO L225 Difference]: With dead ends: 1280 [2023-12-19 22:25:05,209 INFO L226 Difference]: Without dead ends: 805 [2023-12-19 22:25:05,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:25:05,211 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 2146 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 3643 mSolverCounterSat, 698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2156 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 4341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 3643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:05,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2156 Valid, 1931 Invalid, 4341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [698 Valid, 3643 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 22:25:05,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-19 22:25:05,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 549. [2023-12-19 22:25:05,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 430 states have (on average 1.613953488372093) internal successors, (694), 449 states have internal predecessors, (694), 94 states have call successors, (94), 25 states have call predecessors, (94), 24 states have return successors, (91), 87 states have call predecessors, (91), 89 states have call successors, (91) [2023-12-19 22:25:05,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 879 transitions. [2023-12-19 22:25:05,306 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 879 transitions. Word has length 106 [2023-12-19 22:25:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:05,306 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 879 transitions. [2023-12-19 22:25:05,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:25:05,306 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 879 transitions. [2023-12-19 22:25:05,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 22:25:05,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:05,308 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:25:05,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 22:25:05,308 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:05,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:05,308 INFO L85 PathProgramCache]: Analyzing trace with hash -82656940, now seen corresponding path program 1 times [2023-12-19 22:25:05,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:05,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614605339] [2023-12-19 22:25:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:05,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:25:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:25:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:25:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:25:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:25:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 22:25:05,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:05,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614605339] [2023-12-19 22:25:05,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614605339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:05,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:25:05,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:25:05,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847130189] [2023-12-19 22:25:05,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:05,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:25:05,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:05,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:25:05,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:25:05,856 INFO L87 Difference]: Start difference. First operand 549 states and 879 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:25:10,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:10,703 INFO L93 Difference]: Finished difference Result 1291 states and 2192 transitions. [2023-12-19 22:25:10,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:25:10,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 108 [2023-12-19 22:25:10,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:10,708 INFO L225 Difference]: With dead ends: 1291 [2023-12-19 22:25:10,708 INFO L226 Difference]: Without dead ends: 811 [2023-12-19 22:25:10,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:25:10,710 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 2557 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 3571 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2567 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 4429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 3571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:10,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2567 Valid, 1871 Invalid, 4429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 3571 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 22:25:10,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2023-12-19 22:25:10,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 555. [2023-12-19 22:25:10,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 435 states have (on average 1.6045977011494252) internal successors, (698), 454 states have internal predecessors, (698), 94 states have call successors, (94), 26 states have call predecessors, (94), 25 states have return successors, (92), 87 states have call predecessors, (92), 89 states have call successors, (92) [2023-12-19 22:25:10,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 884 transitions. [2023-12-19 22:25:10,814 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 884 transitions. Word has length 108 [2023-12-19 22:25:10,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:10,814 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 884 transitions. [2023-12-19 22:25:10,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:25:10,814 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 884 transitions. [2023-12-19 22:25:10,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 22:25:10,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:10,816 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:25:10,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 22:25:10,816 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:10,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:10,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1173933610, now seen corresponding path program 1 times [2023-12-19 22:25:10,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:10,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186096045] [2023-12-19 22:25:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:10,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:10,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:10,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:11,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:11,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:11,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:11,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:11,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:25:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:11,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:25:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:11,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:11,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:11,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:25:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:11,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 22:25:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:11,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:25:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 22:25:11,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:11,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186096045] [2023-12-19 22:25:11,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186096045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:11,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:25:11,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:25:11,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894757615] [2023-12-19 22:25:11,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:11,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:25:11,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:11,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:25:11,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:25:11,342 INFO L87 Difference]: Start difference. First operand 555 states and 884 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:25:16,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:16,451 INFO L93 Difference]: Finished difference Result 1304 states and 2198 transitions. [2023-12-19 22:25:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:25:16,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 110 [2023-12-19 22:25:16,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:16,460 INFO L225 Difference]: With dead ends: 1304 [2023-12-19 22:25:16,461 INFO L226 Difference]: Without dead ends: 818 [2023-12-19 22:25:16,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:25:16,464 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 2152 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 3635 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 4336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 3635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:16,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 1917 Invalid, 4336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 3635 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 22:25:16,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-19 22:25:16,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 562. [2023-12-19 22:25:16,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 441 states have (on average 1.5941043083900226) internal successors, (703), 460 states have internal predecessors, (703), 94 states have call successors, (94), 27 states have call predecessors, (94), 26 states have return successors, (93), 87 states have call predecessors, (93), 89 states have call successors, (93) [2023-12-19 22:25:16,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 890 transitions. [2023-12-19 22:25:16,598 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 890 transitions. Word has length 110 [2023-12-19 22:25:16,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:16,599 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 890 transitions. [2023-12-19 22:25:16,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:25:16,599 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 890 transitions. [2023-12-19 22:25:16,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-19 22:25:16,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:16,600 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:25:16,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 22:25:16,600 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:16,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:16,601 INFO L85 PathProgramCache]: Analyzing trace with hash -824655724, now seen corresponding path program 1 times [2023-12-19 22:25:16,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:16,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26180314] [2023-12-19 22:25:16,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:16,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:16,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:16,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:16,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:17,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:17,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:17,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:17,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:25:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:17,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:17,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:17,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:17,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:25:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:17,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:25:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 22:25:17,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:17,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26180314] [2023-12-19 22:25:17,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26180314] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:25:17,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701900715] [2023-12-19 22:25:17,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:17,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:25:17,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:25:17,477 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) [2023-12-19 22:25:17,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 22:25:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:17,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:25:17,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:25:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 22:25:17,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:25:17,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701900715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:17,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:25:17,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2023-12-19 22:25:17,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166370844] [2023-12-19 22:25:17,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:17,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:25:17,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:25:17,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:25:17,897 INFO L87 Difference]: Start difference. First operand 562 states and 890 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-12-19 22:25:18,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:18,285 INFO L93 Difference]: Finished difference Result 608 states and 959 transitions. [2023-12-19 22:25:18,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:25:18,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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 112 [2023-12-19 22:25:18,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:18,288 INFO L225 Difference]: With dead ends: 608 [2023-12-19 22:25:18,288 INFO L226 Difference]: Without dead ends: 593 [2023-12-19 22:25:18,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:25:18,289 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 793 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:18,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 2129 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 22:25:18,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-12-19 22:25:18,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 564. [2023-12-19 22:25:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 443 states have (on average 1.5914221218961626) internal successors, (705), 462 states have internal predecessors, (705), 94 states have call successors, (94), 27 states have call predecessors, (94), 26 states have return successors, (93), 87 states have call predecessors, (93), 89 states have call successors, (93) [2023-12-19 22:25:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 892 transitions. [2023-12-19 22:25:18,378 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 892 transitions. Word has length 112 [2023-12-19 22:25:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:18,378 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 892 transitions. [2023-12-19 22:25:18,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-12-19 22:25:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 892 transitions. [2023-12-19 22:25:18,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 22:25:18,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:18,380 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-19 22:25:18,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 22:25:18,586 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,SelfDestructingSolverStorable22 [2023-12-19 22:25:18,587 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:18,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:18,588 INFO L85 PathProgramCache]: Analyzing trace with hash 22479709, now seen corresponding path program 1 times [2023-12-19 22:25:18,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:18,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550624698] [2023-12-19 22:25:18,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:18,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:18,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:18,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:19,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:19,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:19,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:19,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:19,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:25:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:19,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:19,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:25:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:19,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:25:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:19,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:25:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 22:25:19,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:19,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550624698] [2023-12-19 22:25:19,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550624698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:19,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:25:19,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 22:25:19,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698602062] [2023-12-19 22:25:19,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:19,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 22:25:19,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:19,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 22:25:19,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:25:19,255 INFO L87 Difference]: Start difference. First operand 564 states and 892 transitions. Second operand has 11 states, 10 states have (on average 7.5) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:25:28,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:28,274 INFO L93 Difference]: Finished difference Result 1754 states and 2975 transitions. [2023-12-19 22:25:28,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-19 22:25:28,275 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.5) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) Word has length 117 [2023-12-19 22:25:28,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:28,283 INFO L225 Difference]: With dead ends: 1754 [2023-12-19 22:25:28,283 INFO L226 Difference]: Without dead ends: 1739 [2023-12-19 22:25:28,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=455, Invalid=1707, Unknown=0, NotChecked=0, Total=2162 [2023-12-19 22:25:28,284 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 3800 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 4702 mSolverCounterSat, 1230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3831 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 5932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1230 IncrementalHoareTripleChecker+Valid, 4702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:28,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3831 Valid, 2502 Invalid, 5932 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1230 Valid, 4702 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-19 22:25:28,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2023-12-19 22:25:28,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 564. [2023-12-19 22:25:28,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 443 states have (on average 1.5891647855530473) internal successors, (704), 462 states have internal predecessors, (704), 94 states have call successors, (94), 27 states have call predecessors, (94), 26 states have return successors, (93), 87 states have call predecessors, (93), 89 states have call successors, (93) [2023-12-19 22:25:28,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 891 transitions. [2023-12-19 22:25:28,413 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 891 transitions. Word has length 117 [2023-12-19 22:25:28,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:28,414 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 891 transitions. [2023-12-19 22:25:28,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.5) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:25:28,414 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 891 transitions. [2023-12-19 22:25:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-19 22:25:28,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:28,416 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-19 22:25:28,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 22:25:28,416 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:28,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash 886051242, now seen corresponding path program 1 times [2023-12-19 22:25:28,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:28,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635686360] [2023-12-19 22:25:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:28,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:28,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:28,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:28,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:25:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:25:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:25:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:25:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 22:25:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 22:25:29,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:29,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635686360] [2023-12-19 22:25:29,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635686360] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:25:29,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465188279] [2023-12-19 22:25:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:29,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:25:29,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:25:29,200 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) [2023-12-19 22:25:29,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 22:25:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 22:25:29,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:25:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 22:25:29,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:25:29,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465188279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:29,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:25:29,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2023-12-19 22:25:29,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271892101] [2023-12-19 22:25:29,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:29,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:25:29,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:29,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:25:29,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-12-19 22:25:29,609 INFO L87 Difference]: Start difference. First operand 564 states and 891 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-19 22:25:31,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:31,431 INFO L93 Difference]: Finished difference Result 1725 states and 2823 transitions. [2023-12-19 22:25:31,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 22:25:31,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 126 [2023-12-19 22:25:31,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:31,439 INFO L225 Difference]: With dead ends: 1725 [2023-12-19 22:25:31,439 INFO L226 Difference]: Without dead ends: 1232 [2023-12-19 22:25:31,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2023-12-19 22:25:31,441 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 2097 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 3375 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2179 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 3853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 3375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:31,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2179 Valid, 1899 Invalid, 3853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 3375 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 22:25:31,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2023-12-19 22:25:31,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1148. [2023-12-19 22:25:31,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 894 states have (on average 1.6185682326621924) internal successors, (1447), 931 states have internal predecessors, (1447), 196 states have call successors, (196), 52 states have call predecessors, (196), 57 states have return successors, (222), 189 states have call predecessors, (222), 191 states have call successors, (222) [2023-12-19 22:25:31,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1865 transitions. [2023-12-19 22:25:31,684 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1865 transitions. Word has length 126 [2023-12-19 22:25:31,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:31,684 INFO L495 AbstractCegarLoop]: Abstraction has 1148 states and 1865 transitions. [2023-12-19 22:25:31,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-19 22:25:31,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1865 transitions. [2023-12-19 22:25:31,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-19 22:25:31,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:31,687 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-19 22:25:31,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 22:25:31,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-19 22:25:31,893 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:31,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:31,894 INFO L85 PathProgramCache]: Analyzing trace with hash 790888094, now seen corresponding path program 1 times [2023-12-19 22:25:31,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:31,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936509705] [2023-12-19 22:25:31,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:31,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:25:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:25:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:25:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 22:25:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:25:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 22:25:32,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:32,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936509705] [2023-12-19 22:25:32,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936509705] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:25:32,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313856914] [2023-12-19 22:25:32,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:32,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:25:32,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:25:32,565 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) [2023-12-19 22:25:32,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 22:25:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:32,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:25:32,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:25:32,842 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 22:25:32,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:25:32,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313856914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:32,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:25:32,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-12-19 22:25:32,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005790401] [2023-12-19 22:25:32,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:32,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:25:32,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:32,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:25:32,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:25:32,843 INFO L87 Difference]: Start difference. First operand 1148 states and 1865 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-19 22:25:33,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:33,125 INFO L93 Difference]: Finished difference Result 1235 states and 1999 transitions. [2023-12-19 22:25:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:25:33,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 130 [2023-12-19 22:25:33,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:33,130 INFO L225 Difference]: With dead ends: 1235 [2023-12-19 22:25:33,130 INFO L226 Difference]: Without dead ends: 1220 [2023-12-19 22:25:33,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:25:33,131 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 48 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:33,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2567 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:25:33,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2023-12-19 22:25:33,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1152. [2023-12-19 22:25:33,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 898 states have (on average 1.6158129175946547) internal successors, (1451), 935 states have internal predecessors, (1451), 196 states have call successors, (196), 52 states have call predecessors, (196), 57 states have return successors, (222), 189 states have call predecessors, (222), 191 states have call successors, (222) [2023-12-19 22:25:33,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1869 transitions. [2023-12-19 22:25:33,368 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1869 transitions. Word has length 130 [2023-12-19 22:25:33,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:33,368 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1869 transitions. [2023-12-19 22:25:33,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-19 22:25:33,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1869 transitions. [2023-12-19 22:25:33,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-12-19 22:25:33,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:33,371 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-19 22:25:33,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 22:25:33,578 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,SelfDestructingSolverStorable25 [2023-12-19 22:25:33,579 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:33,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:33,579 INFO L85 PathProgramCache]: Analyzing trace with hash 772762498, now seen corresponding path program 1 times [2023-12-19 22:25:33,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:33,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753124265] [2023-12-19 22:25:33,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:33,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:33,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:33,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:25:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:25:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:25:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 22:25:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:25:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 22:25:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-19 22:25:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:25:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 22:25:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:25:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-19 22:25:34,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:34,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753124265] [2023-12-19 22:25:34,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753124265] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:25:34,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567434411] [2023-12-19 22:25:34,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:34,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:25:34,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:25:34,474 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) [2023-12-19 22:25:34,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 22:25:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:34,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 1949 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:25:34,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:25:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-19 22:25:34,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:25:34,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567434411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:34,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:25:34,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [18] total 19 [2023-12-19 22:25:34,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742454407] [2023-12-19 22:25:34,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:34,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:25:34,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:34,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:25:34,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:25:34,836 INFO L87 Difference]: Start difference. First operand 1152 states and 1869 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 22:25:35,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:35,318 INFO L93 Difference]: Finished difference Result 3287 states and 5434 transitions. [2023-12-19 22:25:35,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:25:35,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 215 [2023-12-19 22:25:35,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:35,327 INFO L225 Difference]: With dead ends: 3287 [2023-12-19 22:25:35,327 INFO L226 Difference]: Without dead ends: 2206 [2023-12-19 22:25:35,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:25:35,330 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 830 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:35,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1714 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:25:35,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2023-12-19 22:25:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2204. [2023-12-19 22:25:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 1715 states have (on average 1.632069970845481) internal successors, (2799), 1785 states have internal predecessors, (2799), 377 states have call successors, (377), 99 states have call predecessors, (377), 111 states have return successors, (455), 369 states have call predecessors, (455), 372 states have call successors, (455) [2023-12-19 22:25:35,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 3631 transitions. [2023-12-19 22:25:35,791 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 3631 transitions. Word has length 215 [2023-12-19 22:25:35,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:35,791 INFO L495 AbstractCegarLoop]: Abstraction has 2204 states and 3631 transitions. [2023-12-19 22:25:35,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 22:25:35,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 3631 transitions. [2023-12-19 22:25:35,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-19 22:25:35,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:35,794 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-19 22:25:35,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 22:25:36,001 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,SelfDestructingSolverStorable26 [2023-12-19 22:25:36,001 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:36,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:36,002 INFO L85 PathProgramCache]: Analyzing trace with hash 797443380, now seen corresponding path program 1 times [2023-12-19 22:25:36,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:36,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507684419] [2023-12-19 22:25:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:36,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:25:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:25:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:25:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 22:25:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:36,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:25:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:37,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 22:25:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:37,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:37,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:37,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:37,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:37,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-19 22:25:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:37,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:37,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:37,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:37,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:25:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:37,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:37,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 22:25:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-19 22:25:37,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:37,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507684419] [2023-12-19 22:25:37,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507684419] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:25:37,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460281753] [2023-12-19 22:25:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:37,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:25:37,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:25:37,106 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) [2023-12-19 22:25:37,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 22:25:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:37,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:25:37,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:25:37,563 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 29 proven. 80 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-19 22:25:37,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 22:25:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-19 22:25:37,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460281753] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 22:25:37,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 22:25:37,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5, 5] total 22 [2023-12-19 22:25:37,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104442439] [2023-12-19 22:25:37,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 22:25:37,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-19 22:25:37,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:37,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-19 22:25:37,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2023-12-19 22:25:37,847 INFO L87 Difference]: Start difference. First operand 2204 states and 3631 transitions. Second operand has 22 states, 21 states have (on average 9.857142857142858) internal successors, (207), 16 states have internal predecessors, (207), 9 states have call successors, (52), 8 states have call predecessors, (52), 10 states have return successors, (52), 13 states have call predecessors, (52), 9 states have call successors, (52) [2023-12-19 22:26:07,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:26:07,095 INFO L93 Difference]: Finished difference Result 15333 states and 28205 transitions. [2023-12-19 22:26:07,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-12-19 22:26:07,095 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 9.857142857142858) internal successors, (207), 16 states have internal predecessors, (207), 9 states have call successors, (52), 8 states have call predecessors, (52), 10 states have return successors, (52), 13 states have call predecessors, (52), 9 states have call successors, (52) Word has length 214 [2023-12-19 22:26:07,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:26:07,186 INFO L225 Difference]: With dead ends: 15333 [2023-12-19 22:26:07,186 INFO L226 Difference]: Without dead ends: 13200 [2023-12-19 22:26:07,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 502 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=1586, Invalid=10186, Unknown=0, NotChecked=0, Total=11772 [2023-12-19 22:26:07,223 INFO L413 NwaCegarLoop]: 1386 mSDtfsCounter, 11081 mSDsluCounter, 15090 mSDsCounter, 0 mSdLazyCounter, 29153 mSolverCounterSat, 3704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11087 SdHoareTripleChecker+Valid, 16476 SdHoareTripleChecker+Invalid, 32857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3704 IncrementalHoareTripleChecker+Valid, 29153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:26:07,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11087 Valid, 16476 Invalid, 32857 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3704 Valid, 29153 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2023-12-19 22:26:07,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13200 states. [2023-12-19 22:26:09,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13200 to 8079. [2023-12-19 22:26:09,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8079 states, 6163 states have (on average 1.5958137270809671) internal successors, (9835), 6403 states have internal predecessors, (9835), 1450 states have call successors, (1450), 326 states have call predecessors, (1450), 465 states have return successors, (2183), 1465 states have call predecessors, (2183), 1445 states have call successors, (2183) [2023-12-19 22:26:09,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8079 states to 8079 states and 13468 transitions. [2023-12-19 22:26:09,721 INFO L78 Accepts]: Start accepts. Automaton has 8079 states and 13468 transitions. Word has length 214 [2023-12-19 22:26:09,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:26:09,722 INFO L495 AbstractCegarLoop]: Abstraction has 8079 states and 13468 transitions. [2023-12-19 22:26:09,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 9.857142857142858) internal successors, (207), 16 states have internal predecessors, (207), 9 states have call successors, (52), 8 states have call predecessors, (52), 10 states have return successors, (52), 13 states have call predecessors, (52), 9 states have call successors, (52) [2023-12-19 22:26:09,722 INFO L276 IsEmpty]: Start isEmpty. Operand 8079 states and 13468 transitions. [2023-12-19 22:26:09,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-19 22:26:09,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:26:09,732 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:26:09,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 22:26:09,940 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,SelfDestructingSolverStorable27 [2023-12-19 22:26:09,940 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:26:09,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:26:09,941 INFO L85 PathProgramCache]: Analyzing trace with hash -266754949, now seen corresponding path program 1 times [2023-12-19 22:26:09,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:26:09,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996312185] [2023-12-19 22:26:09,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:26:09,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:26:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:26:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:26:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:26:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:26:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:26:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:26:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:26:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:26:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:26:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 22:26:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:26:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 22:26:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:26:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:26:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:26:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:26:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:26:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:26:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 57 proven. 17 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-19 22:26:10,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:26:10,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996312185] [2023-12-19 22:26:10,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996312185] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:26:10,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645508510] [2023-12-19 22:26:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:26:10,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:26:10,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:26:10,626 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) [2023-12-19 22:26:10,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 22:26:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:10,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:26:10,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:26:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-12-19 22:26:11,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:26:11,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645508510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:26:11,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:26:11,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-12-19 22:26:11,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127256414] [2023-12-19 22:26:11,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:26:11,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:26:11,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:26:11,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:26:11,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:26:11,072 INFO L87 Difference]: Start difference. First operand 8079 states and 13468 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 22:26:12,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:26:12,416 INFO L93 Difference]: Finished difference Result 11760 states and 19543 transitions. [2023-12-19 22:26:12,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:26:12,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 217 [2023-12-19 22:26:12,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:26:12,429 INFO L225 Difference]: With dead ends: 11760 [2023-12-19 22:26:12,429 INFO L226 Difference]: Without dead ends: 3733 [2023-12-19 22:26:12,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2023-12-19 22:26:12,445 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 57 mSDsluCounter, 4801 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 5608 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:26:12,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 5608 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:26:12,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2023-12-19 22:26:13,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 3733. [2023-12-19 22:26:13,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 2889 states have (on average 1.6008999653859466) internal successors, (4625), 2999 states have internal predecessors, (4625), 624 states have call successors, (624), 165 states have call predecessors, (624), 219 states have return successors, (883), 616 states have call predecessors, (883), 619 states have call successors, (883) [2023-12-19 22:26:13,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 6132 transitions. [2023-12-19 22:26:13,443 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 6132 transitions. Word has length 217 [2023-12-19 22:26:13,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:26:13,443 INFO L495 AbstractCegarLoop]: Abstraction has 3733 states and 6132 transitions. [2023-12-19 22:26:13,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 22:26:13,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 6132 transitions. [2023-12-19 22:26:13,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-19 22:26:13,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:26:13,447 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:26:13,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 22:26:13,655 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,SelfDestructingSolverStorable28 [2023-12-19 22:26:13,655 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:26:13,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:26:13,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1442687689, now seen corresponding path program 1 times [2023-12-19 22:26:13,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:26:13,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571477776] [2023-12-19 22:26:13,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:26:13,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:26:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:26:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:26:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:26:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:26:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:26:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:26:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:26:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:26:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:26:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:26:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 22:26:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 22:26:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:26:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:26:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:26:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:26:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:26:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:26:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 2 proven. 53 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-12-19 22:26:14,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:26:14,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571477776] [2023-12-19 22:26:14,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571477776] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:26:14,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497990811] [2023-12-19 22:26:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:26:14,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:26:14,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:26:14,449 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) [2023-12-19 22:26:14,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 22:26:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 1988 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 22:26:14,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:26:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 31 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-12-19 22:26:15,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 22:26:15,708 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 24 proven. 34 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-19 22:26:15,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497990811] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 22:26:15,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 22:26:15,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 11] total 28 [2023-12-19 22:26:15,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170086492] [2023-12-19 22:26:15,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 22:26:15,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 22:26:15,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:26:15,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 22:26:15,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2023-12-19 22:26:15,710 INFO L87 Difference]: Start difference. First operand 3733 states and 6132 transitions. Second operand has 28 states, 27 states have (on average 9.037037037037036) internal successors, (244), 22 states have internal predecessors, (244), 12 states have call successors, (56), 9 states have call predecessors, (56), 13 states have return successors, (59), 17 states have call predecessors, (59), 12 states have call successors, (59) [2023-12-19 22:27:14,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:27:14,542 INFO L93 Difference]: Finished difference Result 22178 states and 40429 transitions. [2023-12-19 22:27:14,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-12-19 22:27:14,543 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 9.037037037037036) internal successors, (244), 22 states have internal predecessors, (244), 12 states have call successors, (56), 9 states have call predecessors, (56), 13 states have return successors, (59), 17 states have call predecessors, (59), 12 states have call successors, (59) Word has length 227 [2023-12-19 22:27:14,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:27:14,697 INFO L225 Difference]: With dead ends: 22178 [2023-12-19 22:27:14,697 INFO L226 Difference]: Without dead ends: 16821 [2023-12-19 22:27:14,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 584 SyntacticMatches, 4 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16408 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=5200, Invalid=35806, Unknown=0, NotChecked=0, Total=41006 [2023-12-19 22:27:14,824 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 17904 mSDsluCounter, 12206 mSDsCounter, 0 mSdLazyCounter, 23653 mSolverCounterSat, 6437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17904 SdHoareTripleChecker+Valid, 13208 SdHoareTripleChecker+Invalid, 30090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 6437 IncrementalHoareTripleChecker+Valid, 23653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:27:14,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17904 Valid, 13208 Invalid, 30090 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [6437 Valid, 23653 Invalid, 0 Unknown, 0 Unchecked, 17.9s Time] [2023-12-19 22:27:14,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16821 states. [2023-12-19 22:27:19,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16821 to 13922. [2023-12-19 22:27:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13922 states, 10300 states have (on average 1.5510679611650486) internal successors, (15976), 10935 states have internal predecessors, (15976), 2778 states have call successors, (2778), 605 states have call predecessors, (2778), 843 states have return successors, (4857), 2765 states have call predecessors, (4857), 2773 states have call successors, (4857) [2023-12-19 22:27:19,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13922 states to 13922 states and 23611 transitions. [2023-12-19 22:27:19,284 INFO L78 Accepts]: Start accepts. Automaton has 13922 states and 23611 transitions. Word has length 227 [2023-12-19 22:27:19,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:27:19,284 INFO L495 AbstractCegarLoop]: Abstraction has 13922 states and 23611 transitions. [2023-12-19 22:27:19,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 9.037037037037036) internal successors, (244), 22 states have internal predecessors, (244), 12 states have call successors, (56), 9 states have call predecessors, (56), 13 states have return successors, (59), 17 states have call predecessors, (59), 12 states have call successors, (59) [2023-12-19 22:27:19,284 INFO L276 IsEmpty]: Start isEmpty. Operand 13922 states and 23611 transitions. [2023-12-19 22:27:19,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-19 22:27:19,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:27:19,289 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 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] [2023-12-19 22:27:19,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-19 22:27:19,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:27:19,497 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:27:19,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:27:19,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1695670967, now seen corresponding path program 1 times [2023-12-19 22:27:19,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:27:19,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359499067] [2023-12-19 22:27:19,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:27:19,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:27:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:19,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:27:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:19,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:19,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:27:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:19,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:27:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:27:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:27:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:27:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:27:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 22:27:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:27:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 22:27:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:27:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 22:27:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 22:27:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:27:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-19 22:27:20,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:27:20,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359499067] [2023-12-19 22:27:20,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359499067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:27:20,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:27:20,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 22:27:20,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935239683] [2023-12-19 22:27:20,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:27:20,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 22:27:20,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:27:20,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 22:27:20,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:27:20,089 INFO L87 Difference]: Start difference. First operand 13922 states and 23611 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-19 22:27:35,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:27:35,966 INFO L93 Difference]: Finished difference Result 32955 states and 58799 transitions. [2023-12-19 22:27:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-19 22:27:35,966 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 183 [2023-12-19 22:27:35,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:27:36,099 INFO L225 Difference]: With dead ends: 32955 [2023-12-19 22:27:36,099 INFO L226 Difference]: Without dead ends: 19104 [2023-12-19 22:27:36,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2023-12-19 22:27:36,143 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 3957 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 5322 mSolverCounterSat, 1208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4030 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 6530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1208 IncrementalHoareTripleChecker+Valid, 5322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:27:36,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4030 Valid, 3221 Invalid, 6530 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1208 Valid, 5322 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-19 22:27:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19104 states. [2023-12-19 22:27:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19104 to 13982. [2023-12-19 22:27:40,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13982 states, 10372 states have (on average 1.5449286540686464) internal successors, (16024), 10971 states have internal predecessors, (16024), 2754 states have call successors, (2754), 605 states have call predecessors, (2754), 855 states have return successors, (4905), 2789 states have call predecessors, (4905), 2749 states have call successors, (4905) [2023-12-19 22:27:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13982 states to 13982 states and 23683 transitions. [2023-12-19 22:27:41,008 INFO L78 Accepts]: Start accepts. Automaton has 13982 states and 23683 transitions. Word has length 183 [2023-12-19 22:27:41,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:27:41,008 INFO L495 AbstractCegarLoop]: Abstraction has 13982 states and 23683 transitions. [2023-12-19 22:27:41,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-19 22:27:41,008 INFO L276 IsEmpty]: Start isEmpty. Operand 13982 states and 23683 transitions. [2023-12-19 22:27:41,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-19 22:27:41,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:27:41,015 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:27:41,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 22:27:41,015 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:27:41,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:27:41,015 INFO L85 PathProgramCache]: Analyzing trace with hash -942123948, now seen corresponding path program 1 times [2023-12-19 22:27:41,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:27:41,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120185787] [2023-12-19 22:27:41,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:27:41,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:27:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:27:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:27:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:27:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:27:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:27:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:27:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:27:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:27:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 22:27:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 22:27:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 22:27:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 22:27:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 22:27:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 22:27:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 22:27:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:27:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:27:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:27:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 22:27:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:27:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:27:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-12-19 22:27:41,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:27:41,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120185787] [2023-12-19 22:27:41,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120185787] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:27:41,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070147173] [2023-12-19 22:27:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:27:41,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:27:41,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:27:41,875 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) [2023-12-19 22:27:41,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 22:27:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:42,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 2099 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:27:42,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:27:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-19 22:27:42,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:27:42,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070147173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:27:42,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:27:42,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2023-12-19 22:27:42,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722427959] [2023-12-19 22:27:42,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:27:42,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:27:42,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:27:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:27:42,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:27:42,304 INFO L87 Difference]: Start difference. First operand 13982 states and 23683 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-19 22:27:47,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:27:47,503 INFO L93 Difference]: Finished difference Result 28517 states and 48746 transitions. [2023-12-19 22:27:47,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:27:47,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 260 [2023-12-19 22:27:47,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:27:47,593 INFO L225 Difference]: With dead ends: 28517 [2023-12-19 22:27:47,593 INFO L226 Difference]: Without dead ends: 14606 [2023-12-19 22:27:47,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:27:47,683 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 213 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:27:47,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2223 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:27:47,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14606 states. [2023-12-19 22:27:52,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14606 to 14606. [2023-12-19 22:27:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14606 states, 10980 states have (on average 1.5657559198542805) internal successors, (17192), 11579 states have internal predecessors, (17192), 2754 states have call successors, (2754), 621 states have call predecessors, (2754), 871 states have return successors, (4905), 2789 states have call predecessors, (4905), 2749 states have call successors, (4905) [2023-12-19 22:27:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14606 states to 14606 states and 24851 transitions. [2023-12-19 22:27:52,490 INFO L78 Accepts]: Start accepts. Automaton has 14606 states and 24851 transitions. Word has length 260 [2023-12-19 22:27:52,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:27:52,490 INFO L495 AbstractCegarLoop]: Abstraction has 14606 states and 24851 transitions. [2023-12-19 22:27:52,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-19 22:27:52,491 INFO L276 IsEmpty]: Start isEmpty. Operand 14606 states and 24851 transitions. [2023-12-19 22:27:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-19 22:27:52,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:27:52,497 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 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] [2023-12-19 22:27:52,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 22:27:52,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:27:52,706 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:27:52,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:27:52,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1875175095, now seen corresponding path program 1 times [2023-12-19 22:27:52,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:27:52,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811936692] [2023-12-19 22:27:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:27:52,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:27:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:27:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:27:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:27:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:27:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:27:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:27:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 22:27:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:27:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:27:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 22:27:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 22:27:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 22:27:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 22:27:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:27:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-19 22:27:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-19 22:27:53,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:27:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811936692] [2023-12-19 22:27:53,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811936692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:27:53,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:27:53,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 22:27:53,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035059282] [2023-12-19 22:27:53,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:27:53,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 22:27:53,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:27:53,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 22:27:53,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:27:53,425 INFO L87 Difference]: Start difference. First operand 14606 states and 24851 transitions. Second operand has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 6 states have internal predecessors, (115), 4 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-12-19 22:28:05,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:28:05,127 INFO L93 Difference]: Finished difference Result 33396 states and 59383 transitions. [2023-12-19 22:28:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:28:05,128 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 6 states have internal predecessors, (115), 4 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 194 [2023-12-19 22:28:05,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:28:05,210 INFO L225 Difference]: With dead ends: 33396 [2023-12-19 22:28:05,211 INFO L226 Difference]: Without dead ends: 18325 [2023-12-19 22:28:05,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:28:05,251 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 2511 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 4314 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2576 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 4900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 4314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:28:05,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2576 Valid, 2886 Invalid, 4900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 4314 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 22:28:05,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18325 states. [2023-12-19 22:28:10,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18325 to 14606. [2023-12-19 22:28:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14606 states, 10980 states have (on average 1.5595628415300546) internal successors, (17124), 11579 states have internal predecessors, (17124), 2754 states have call successors, (2754), 621 states have call predecessors, (2754), 871 states have return successors, (4905), 2789 states have call predecessors, (4905), 2749 states have call successors, (4905) [2023-12-19 22:28:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14606 states to 14606 states and 24783 transitions. [2023-12-19 22:28:10,196 INFO L78 Accepts]: Start accepts. Automaton has 14606 states and 24783 transitions. Word has length 194 [2023-12-19 22:28:10,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:28:10,197 INFO L495 AbstractCegarLoop]: Abstraction has 14606 states and 24783 transitions. [2023-12-19 22:28:10,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 6 states have internal predecessors, (115), 4 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-12-19 22:28:10,197 INFO L276 IsEmpty]: Start isEmpty. Operand 14606 states and 24783 transitions. [2023-12-19 22:28:10,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-19 22:28:10,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:28:10,202 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:28:10,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-19 22:28:10,202 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:28:10,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:28:10,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1871728074, now seen corresponding path program 1 times [2023-12-19 22:28:10,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:28:10,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576487690] [2023-12-19 22:28:10,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:10,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:28:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:28:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:28:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:28:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:28:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:28:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:28:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 22:28:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 22:28:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:28:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:28:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:28:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 22:28:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:28:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:28:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:28:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:28:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:28:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:28:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:28:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:28:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-19 22:28:10,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:28:10,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576487690] [2023-12-19 22:28:10,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576487690] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:28:10,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818827846] [2023-12-19 22:28:10,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:10,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:28:10,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:28:10,928 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) [2023-12-19 22:28:10,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 22:28:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:11,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 2121 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:28:11,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:28:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-19 22:28:11,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:28:11,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818827846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:28:11,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:28:11,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-12-19 22:28:11,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107851791] [2023-12-19 22:28:11,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:28:11,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:28:11,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:28:11,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:28:11,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:28:11,348 INFO L87 Difference]: Start difference. First operand 14606 states and 24783 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-19 22:28:16,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:28:16,276 INFO L93 Difference]: Finished difference Result 29765 states and 50914 transitions. [2023-12-19 22:28:16,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:28:16,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 270 [2023-12-19 22:28:16,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:28:16,338 INFO L225 Difference]: With dead ends: 29765 [2023-12-19 22:28:16,338 INFO L226 Difference]: Without dead ends: 15230 [2023-12-19 22:28:16,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:28:16,378 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 211 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:28:16,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2193 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:28:16,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15230 states. [2023-12-19 22:28:21,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15230 to 15230. [2023-12-19 22:28:21,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15230 states, 11588 states have (on average 1.57852951328961) internal successors, (18292), 12187 states have internal predecessors, (18292), 2754 states have call successors, (2754), 637 states have call predecessors, (2754), 887 states have return successors, (4905), 2789 states have call predecessors, (4905), 2749 states have call successors, (4905) [2023-12-19 22:28:21,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15230 states to 15230 states and 25951 transitions. [2023-12-19 22:28:21,152 INFO L78 Accepts]: Start accepts. Automaton has 15230 states and 25951 transitions. Word has length 270 [2023-12-19 22:28:21,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:28:21,153 INFO L495 AbstractCegarLoop]: Abstraction has 15230 states and 25951 transitions. [2023-12-19 22:28:21,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-19 22:28:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 15230 states and 25951 transitions. [2023-12-19 22:28:21,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-19 22:28:21,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:28:21,159 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 5, 4, 3, 3, 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] [2023-12-19 22:28:21,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 22:28:21,368 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,SelfDestructingSolverStorable33 [2023-12-19 22:28:21,369 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:28:21,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:28:21,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1037478895, now seen corresponding path program 1 times [2023-12-19 22:28:21,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:28:21,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340505369] [2023-12-19 22:28:21,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:21,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:28:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:21,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:21,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:21,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:28:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:21,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:28:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:28:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:28:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:28:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:28:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:28:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:28:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 22:28:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 22:28:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 22:28:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 22:28:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 22:28:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-19 22:28:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-19 22:28:22,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:28:22,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340505369] [2023-12-19 22:28:22,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340505369] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:28:22,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134077882] [2023-12-19 22:28:22,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:22,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:28:22,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:28:22,154 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) [2023-12-19 22:28:22,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 22:28:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:22,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 22:28:22,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:28:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 100 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-19 22:28:22,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 22:28:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-12-19 22:28:22,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134077882] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 22:28:22,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 22:28:22,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 23 [2023-12-19 22:28:22,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516225473] [2023-12-19 22:28:22,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 22:28:22,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 22:28:22,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:28:22,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 22:28:22,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-12-19 22:28:22,977 INFO L87 Difference]: Start difference. First operand 15230 states and 25951 transitions. Second operand has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 16 states have internal predecessors, (218), 8 states have call successors, (51), 8 states have call predecessors, (51), 12 states have return successors, (50), 12 states have call predecessors, (50), 8 states have call successors, (50) [2023-12-19 22:29:03,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:03,690 INFO L93 Difference]: Finished difference Result 72979 states and 133118 transitions. [2023-12-19 22:29:03,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-19 22:29:03,691 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 16 states have internal predecessors, (218), 8 states have call successors, (51), 8 states have call predecessors, (51), 12 states have return successors, (50), 12 states have call predecessors, (50), 8 states have call successors, (50) Word has length 199 [2023-12-19 22:29:03,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:04,154 INFO L225 Difference]: With dead ends: 72979 [2023-12-19 22:29:04,154 INFO L226 Difference]: Without dead ends: 57746 [2023-12-19 22:29:04,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 450 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1664 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=937, Invalid=5225, Unknown=0, NotChecked=0, Total=6162 [2023-12-19 22:29:04,228 INFO L413 NwaCegarLoop]: 1043 mSDtfsCounter, 6699 mSDsluCounter, 8692 mSDsCounter, 0 mSdLazyCounter, 25339 mSolverCounterSat, 2324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6708 SdHoareTripleChecker+Valid, 9735 SdHoareTripleChecker+Invalid, 27663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2324 IncrementalHoareTripleChecker+Valid, 25339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:04,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6708 Valid, 9735 Invalid, 27663 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2324 Valid, 25339 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2023-12-19 22:29:04,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57746 states. [2023-12-19 22:29:20,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57746 to 49391. [2023-12-19 22:29:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49391 states, 36661 states have (on average 1.5759253702844984) internal successors, (57775), 38739 states have internal predecessors, (57775), 10050 states have call successors, (10050), 1798 states have call predecessors, (10050), 2679 states have return successors, (20418), 10245 states have call predecessors, (20418), 10045 states have call successors, (20418) [2023-12-19 22:29:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49391 states to 49391 states and 88243 transitions. [2023-12-19 22:29:21,172 INFO L78 Accepts]: Start accepts. Automaton has 49391 states and 88243 transitions. Word has length 199 [2023-12-19 22:29:21,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:21,172 INFO L495 AbstractCegarLoop]: Abstraction has 49391 states and 88243 transitions. [2023-12-19 22:29:21,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 16 states have internal predecessors, (218), 8 states have call successors, (51), 8 states have call predecessors, (51), 12 states have return successors, (50), 12 states have call predecessors, (50), 8 states have call successors, (50) [2023-12-19 22:29:21,173 INFO L276 IsEmpty]: Start isEmpty. Operand 49391 states and 88243 transitions. [2023-12-19 22:29:21,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-19 22:29:21,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:21,188 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 5, 4, 3, 3, 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] [2023-12-19 22:29:21,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-19 22:29:21,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:29:21,395 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:21,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:21,395 INFO L85 PathProgramCache]: Analyzing trace with hash 538060276, now seen corresponding path program 1 times [2023-12-19 22:29:21,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:21,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760096211] [2023-12-19 22:29:21,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:21,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:29:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:29:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:29:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:29:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:29:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 22:29:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 22:29:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 22:29:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 22:29:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 22:29:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-19 22:29:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-19 22:29:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 22:29:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-19 22:29:21,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:21,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760096211] [2023-12-19 22:29:21,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760096211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:21,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:21,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 22:29:21,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054970326] [2023-12-19 22:29:21,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:21,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 22:29:21,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:21,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 22:29:21,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:29:21,928 INFO L87 Difference]: Start difference. First operand 49391 states and 88243 transitions. Second operand has 10 states, 9 states have (on average 13.0) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-12-19 22:29:49,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:49,582 INFO L93 Difference]: Finished difference Result 89050 states and 162763 transitions. [2023-12-19 22:29:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 22:29:49,583 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.0) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 202 [2023-12-19 22:29:49,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:50,168 INFO L225 Difference]: With dead ends: 89050 [2023-12-19 22:29:50,168 INFO L226 Difference]: Without dead ends: 56852 [2023-12-19 22:29:50,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:29:50,429 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1331 mSDsluCounter, 2508 mSDsCounter, 0 mSdLazyCounter, 4923 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 5251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 4923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:50,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 2952 Invalid, 5251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 4923 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-19 22:29:50,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56852 states. [2023-12-19 22:30:07,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56852 to 49364. [2023-12-19 22:30:07,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49364 states, 36634 states have (on average 1.576213353715128) internal successors, (57743), 38712 states have internal predecessors, (57743), 10050 states have call successors, (10050), 1798 states have call predecessors, (10050), 2679 states have return successors, (20418), 10245 states have call predecessors, (20418), 10045 states have call successors, (20418) [2023-12-19 22:30:07,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49364 states to 49364 states and 88211 transitions. [2023-12-19 22:30:07,788 INFO L78 Accepts]: Start accepts. Automaton has 49364 states and 88211 transitions. Word has length 202 [2023-12-19 22:30:07,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:07,788 INFO L495 AbstractCegarLoop]: Abstraction has 49364 states and 88211 transitions. [2023-12-19 22:30:07,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.0) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-12-19 22:30:07,788 INFO L276 IsEmpty]: Start isEmpty. Operand 49364 states and 88211 transitions. [2023-12-19 22:30:07,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-12-19 22:30:07,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:07,804 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:30:07,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-19 22:30:07,804 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:07,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:07,804 INFO L85 PathProgramCache]: Analyzing trace with hash -264090070, now seen corresponding path program 1 times [2023-12-19 22:30:07,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:07,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890970251] [2023-12-19 22:30:07,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:07,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:30:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:30:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:30:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:30:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:30:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:30:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:30:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 22:30:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 22:30:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:30:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 22:30:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 22:30:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-19 22:30:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:30:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:30:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:30:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:30:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:30:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:30:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-19 22:30:08,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:08,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890970251] [2023-12-19 22:30:08,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890970251] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:30:08,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373513019] [2023-12-19 22:30:08,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:08,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:30:08,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:30:08,385 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) [2023-12-19 22:30:08,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 22:30:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:08,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 2125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:30:08,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:30:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-19 22:30:08,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:30:08,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373513019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:08,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:30:08,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-12-19 22:30:08,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999554088] [2023-12-19 22:30:08,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:08,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:30:08,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:08,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:30:08,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:30:08,782 INFO L87 Difference]: Start difference. First operand 49364 states and 88211 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-19 22:30:26,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:26,725 INFO L93 Difference]: Finished difference Result 100537 states and 181403 transitions. [2023-12-19 22:30:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:30:26,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 274 [2023-12-19 22:30:26,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:27,057 INFO L225 Difference]: With dead ends: 100537 [2023-12-19 22:30:27,058 INFO L226 Difference]: Without dead ends: 51236 [2023-12-19 22:30:27,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:30:27,265 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 209 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:27,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 2133 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:30:27,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51236 states. [2023-12-19 22:30:43,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51236 to 51236. [2023-12-19 22:30:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51236 states, 38458 states have (on average 1.5925685163035) internal successors, (61247), 40536 states have internal predecessors, (61247), 10050 states have call successors, (10050), 1846 states have call predecessors, (10050), 2727 states have return successors, (20418), 10245 states have call predecessors, (20418), 10045 states have call successors, (20418) [2023-12-19 22:30:44,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51236 states to 51236 states and 91715 transitions. [2023-12-19 22:30:44,075 INFO L78 Accepts]: Start accepts. Automaton has 51236 states and 91715 transitions. Word has length 274 [2023-12-19 22:30:44,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:44,075 INFO L495 AbstractCegarLoop]: Abstraction has 51236 states and 91715 transitions. [2023-12-19 22:30:44,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-19 22:30:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 51236 states and 91715 transitions. [2023-12-19 22:30:44,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-19 22:30:44,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:44,107 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 5, 4, 3, 3, 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] [2023-12-19 22:30:44,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 22:30:44,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:30:44,321 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:44,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:44,321 INFO L85 PathProgramCache]: Analyzing trace with hash -924379623, now seen corresponding path program 1 times [2023-12-19 22:30:44,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:44,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205662054] [2023-12-19 22:30:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:44,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 22:30:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:30:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:30:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:30:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:30:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 22:30:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 22:30:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 22:30:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 22:30:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 22:30:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-19 22:30:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-19 22:30:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 22:30:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-19 22:30:44,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:44,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205662054] [2023-12-19 22:30:44,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205662054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:44,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:30:44,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:30:44,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359595077] [2023-12-19 22:30:44,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:44,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:30:44,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:44,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:30:44,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:30:44,785 INFO L87 Difference]: Start difference. First operand 51236 states and 91715 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-19 22:31:08,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:31:08,817 INFO L93 Difference]: Finished difference Result 89145 states and 160927 transitions. [2023-12-19 22:31:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:31:08,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 205 [2023-12-19 22:31:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:31:09,148 INFO L225 Difference]: With dead ends: 89145 [2023-12-19 22:31:09,148 INFO L226 Difference]: Without dead ends: 55730 [2023-12-19 22:31:09,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:31:09,265 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 852 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 2668 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 2857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 2668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:31:09,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 1545 Invalid, 2857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 2668 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:31:09,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55730 states. [2023-12-19 22:31:25,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55730 to 49794. [2023-12-19 22:31:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49794 states, 37352 states have (on average 1.598040265581495) internal successors, (59690), 39433 states have internal predecessors, (59690), 9718 states have call successors, (9718), 1845 states have call predecessors, (9718), 2723 states have return successors, (18771), 9907 states have call predecessors, (18771), 9713 states have call successors, (18771) [2023-12-19 22:31:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49794 states to 49794 states and 88179 transitions. [2023-12-19 22:31:25,884 INFO L78 Accepts]: Start accepts. Automaton has 49794 states and 88179 transitions. Word has length 205 [2023-12-19 22:31:25,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:31:25,884 INFO L495 AbstractCegarLoop]: Abstraction has 49794 states and 88179 transitions. [2023-12-19 22:31:25,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-19 22:31:25,884 INFO L276 IsEmpty]: Start isEmpty. Operand 49794 states and 88179 transitions. [2023-12-19 22:31:25,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-19 22:31:25,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:31:25,891 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:31:25,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-19 22:31:25,891 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:31:25,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:31:25,891 INFO L85 PathProgramCache]: Analyzing trace with hash -15778654, now seen corresponding path program 1 times [2023-12-19 22:31:25,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:31:25,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111831104] [2023-12-19 22:31:25,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:31:25,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:31:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:31:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:31:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:31:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:31:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:31:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:31:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:31:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:31:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:31:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 22:31:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:31:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 22:31:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-19 22:31:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-19 22:31:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:31:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:31:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:31:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:31:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:31:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:31:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-19 22:31:26,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:31:26,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111831104] [2023-12-19 22:31:26,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111831104] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:31:26,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205016195] [2023-12-19 22:31:26,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:31:26,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:31:26,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:31:26,757 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) [2023-12-19 22:31:26,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 22:31:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:27,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:31:27,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:31:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-19 22:31:27,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:31:27,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205016195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:31:27,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:31:27,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-12-19 22:31:27,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856461076] [2023-12-19 22:31:27,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:31:27,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:31:27,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:31:27,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:31:27,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:31:27,151 INFO L87 Difference]: Start difference. First operand 49794 states and 88179 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-19 22:31:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:31:43,819 INFO L93 Difference]: Finished difference Result 101419 states and 180776 transitions. [2023-12-19 22:31:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:31:43,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 277 [2023-12-19 22:31:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:31:44,066 INFO L225 Difference]: With dead ends: 101419 [2023-12-19 22:31:44,066 INFO L226 Difference]: Without dead ends: 51666 [2023-12-19 22:31:44,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:31:44,214 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 207 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:31:44,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 2121 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:31:44,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51666 states. [2023-12-19 22:31:59,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51666 to 51666. [2023-12-19 22:31:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51666 states, 39176 states have (on average 1.6130794363896264) internal successors, (63194), 41257 states have internal predecessors, (63194), 9718 states have call successors, (9718), 1893 states have call predecessors, (9718), 2771 states have return successors, (18771), 9907 states have call predecessors, (18771), 9713 states have call successors, (18771) [2023-12-19 22:32:00,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51666 states to 51666 states and 91683 transitions. [2023-12-19 22:32:00,286 INFO L78 Accepts]: Start accepts. Automaton has 51666 states and 91683 transitions. Word has length 277 [2023-12-19 22:32:00,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:32:00,286 INFO L495 AbstractCegarLoop]: Abstraction has 51666 states and 91683 transitions. [2023-12-19 22:32:00,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-19 22:32:00,286 INFO L276 IsEmpty]: Start isEmpty. Operand 51666 states and 91683 transitions. [2023-12-19 22:32:00,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-19 22:32:00,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:32:00,294 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:32:00,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 22:32:00,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:32:00,501 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:32:00,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:32:00,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1056730422, now seen corresponding path program 1 times [2023-12-19 22:32:00,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:32:00,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945116831] [2023-12-19 22:32:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:32:00,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:32:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:00,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:00,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:32:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:00,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:32:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:32:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:32:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:32:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:32:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:32:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:32:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:32:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:32:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 22:32:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 22:32:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:32:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-19 22:32:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:32:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:32:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:32:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:32:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:32:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:32:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-19 22:32:01,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:32:01,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945116831] [2023-12-19 22:32:01,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945116831] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:32:01,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429184776] [2023-12-19 22:32:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:32:01,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:32:01,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:32:01,105 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) [2023-12-19 22:32:01,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 22:32:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:32:01,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:32:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-19 22:32:01,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:32:01,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429184776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:32:01,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:32:01,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-12-19 22:32:01,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239134020] [2023-12-19 22:32:01,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:32:01,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:32:01,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:32:01,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:32:01,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:32:01,511 INFO L87 Difference]: Start difference. First operand 51666 states and 91683 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-19 22:32:18,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:32:18,406 INFO L93 Difference]: Finished difference Result 105163 states and 187640 transitions. [2023-12-19 22:32:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:32:18,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 279 [2023-12-19 22:32:18,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:32:18,697 INFO L225 Difference]: With dead ends: 105163 [2023-12-19 22:32:18,698 INFO L226 Difference]: Without dead ends: 53538 [2023-12-19 22:32:18,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:32:18,853 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 205 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:32:18,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 2121 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:32:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53538 states. [2023-12-19 22:32:35,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53538 to 53538. [2023-12-19 22:32:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53538 states, 41000 states have (on average 1.626780487804878) internal successors, (66698), 43081 states have internal predecessors, (66698), 9718 states have call successors, (9718), 1941 states have call predecessors, (9718), 2819 states have return successors, (18771), 9907 states have call predecessors, (18771), 9713 states have call successors, (18771) [2023-12-19 22:32:35,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53538 states to 53538 states and 95187 transitions. [2023-12-19 22:32:35,512 INFO L78 Accepts]: Start accepts. Automaton has 53538 states and 95187 transitions. Word has length 279 [2023-12-19 22:32:35,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:32:35,512 INFO L495 AbstractCegarLoop]: Abstraction has 53538 states and 95187 transitions. [2023-12-19 22:32:35,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-19 22:32:35,512 INFO L276 IsEmpty]: Start isEmpty. Operand 53538 states and 95187 transitions. [2023-12-19 22:32:35,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-19 22:32:35,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:32:35,519 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:32:35,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 22:32:35,721 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,SelfDestructingSolverStorable39 [2023-12-19 22:32:35,722 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:32:35,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:32:35,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1662224357, now seen corresponding path program 1 times [2023-12-19 22:32:35,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:32:35,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893439724] [2023-12-19 22:32:35,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:32:35,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:32:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:32:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:32:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:32:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:32:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:32:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:32:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:32:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:32:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:32:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:32:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 22:32:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 22:32:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:32:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-19 22:32:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:32:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:32:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:32:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:32:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:32:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:32:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 18 proven. 32 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-12-19 22:32:36,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:32:36,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893439724] [2023-12-19 22:32:36,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893439724] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:32:36,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305310365] [2023-12-19 22:32:36,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:32:36,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:32:36,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:32:36,516 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) [2023-12-19 22:32:36,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 22:32:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:36,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 2127 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 22:32:36,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:32:37,178 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-12-19 22:32:37,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 22:32:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-12-19 22:32:37,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305310365] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 22:32:37,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 22:32:37,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 7] total 24 [2023-12-19 22:32:37,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170320766] [2023-12-19 22:32:37,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 22:32:37,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 22:32:37,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:32:37,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 22:32:37,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2023-12-19 22:32:37,454 INFO L87 Difference]: Start difference. First operand 53538 states and 95187 transitions. Second operand has 24 states, 24 states have (on average 15.416666666666666) internal successors, (370), 20 states have internal predecessors, (370), 9 states have call successors, (70), 7 states have call predecessors, (70), 9 states have return successors, (70), 11 states have call predecessors, (70), 9 states have call successors, (70) [2023-12-19 22:33:25,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:33:25,258 INFO L93 Difference]: Finished difference Result 134859 states and 265215 transitions. [2023-12-19 22:33:25,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-19 22:33:25,258 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 15.416666666666666) internal successors, (370), 20 states have internal predecessors, (370), 9 states have call successors, (70), 7 states have call predecessors, (70), 9 states have return successors, (70), 11 states have call predecessors, (70), 9 states have call successors, (70) Word has length 279 [2023-12-19 22:33:25,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:33:26,488 INFO L225 Difference]: With dead ends: 134859 [2023-12-19 22:33:26,489 INFO L226 Difference]: Without dead ends: 76860 [2023-12-19 22:33:26,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4102 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2412, Invalid=9798, Unknown=0, NotChecked=0, Total=12210 [2023-12-19 22:33:26,892 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 8439 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 9449 mSolverCounterSat, 3063 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8439 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 12512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3063 IncrementalHoareTripleChecker+Valid, 9449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:33:26,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8439 Valid, 3709 Invalid, 12512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3063 Valid, 9449 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-19 22:33:26,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76860 states. [2023-12-19 22:33:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76860 to 58115. [2023-12-19 22:33:47,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58115 states, 43482 states have (on average 1.568741088266409) internal successors, (68212), 45673 states have internal predecessors, (68212), 11533 states have call successors, (11533), 2215 states have call predecessors, (11533), 3099 states have return successors, (24423), 11792 states have call predecessors, (24423), 11528 states have call successors, (24423) [2023-12-19 22:33:48,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58115 states to 58115 states and 104168 transitions. [2023-12-19 22:33:48,508 INFO L78 Accepts]: Start accepts. Automaton has 58115 states and 104168 transitions. Word has length 279 [2023-12-19 22:33:48,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:33:48,508 INFO L495 AbstractCegarLoop]: Abstraction has 58115 states and 104168 transitions. [2023-12-19 22:33:48,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.416666666666666) internal successors, (370), 20 states have internal predecessors, (370), 9 states have call successors, (70), 7 states have call predecessors, (70), 9 states have return successors, (70), 11 states have call predecessors, (70), 9 states have call successors, (70) [2023-12-19 22:33:48,508 INFO L276 IsEmpty]: Start isEmpty. Operand 58115 states and 104168 transitions. [2023-12-19 22:33:48,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-19 22:33:48,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:33:48,518 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2023-12-19 22:33:48,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 22:33:48,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:33:48,725 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:33:48,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:33:48,725 INFO L85 PathProgramCache]: Analyzing trace with hash -38329975, now seen corresponding path program 1 times [2023-12-19 22:33:48,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:33:48,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800915839] [2023-12-19 22:33:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:33:48,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:33:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:33:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:48,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:33:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:33:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:33:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:33:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:33:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:33:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:33:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:33:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:33:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 22:33:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 22:33:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 22:33:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-19 22:33:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-19 22:33:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 22:33:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 22:33:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-19 22:33:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-19 22:33:49,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:33:49,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800915839] [2023-12-19 22:33:49,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800915839] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:33:49,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875396562] [2023-12-19 22:33:49,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:33:49,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:33:49,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:33:49,349 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) [2023-12-19 22:33:49,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 22:33:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:49,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 22:33:49,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:33:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-12-19 22:33:49,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:33:49,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875396562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:33:49,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:33:49,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2023-12-19 22:33:49,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027907285] [2023-12-19 22:33:49,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:33:49,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:33:49,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:33:49,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:33:49,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2023-12-19 22:33:49,845 INFO L87 Difference]: Start difference. First operand 58115 states and 104168 transitions. Second operand has 9 states, 9 states have (on average 15.0) internal successors, (135), 9 states have internal predecessors, (135), 6 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2023-12-19 22:34:37,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:34:37,582 INFO L93 Difference]: Finished difference Result 175212 states and 318007 transitions. [2023-12-19 22:34:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 22:34:37,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.0) internal successors, (135), 9 states have internal predecessors, (135), 6 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 223 [2023-12-19 22:34:37,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:34:39,016 INFO L225 Difference]: With dead ends: 175212 [2023-12-19 22:34:39,016 INFO L226 Difference]: Without dead ends: 117540 [2023-12-19 22:34:39,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2023-12-19 22:34:39,372 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 2639 mSDsluCounter, 2053 mSDsCounter, 0 mSdLazyCounter, 5789 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2747 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 6449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 5789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:34:39,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2747 Valid, 2538 Invalid, 6449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 5789 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 22:34:39,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117540 states. [2023-12-19 22:35:21,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117540 to 115829. [2023-12-19 22:35:21,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115829 states, 86178 states have (on average 1.586739074937919) internal successors, (136742), 90975 states have internal predecessors, (136742), 23457 states have call successors, (23457), 4423 states have call predecessors, (23457), 6193 states have return successors, (49345), 23960 states have call predecessors, (49345), 23452 states have call successors, (49345) [2023-12-19 22:35:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115829 states to 115829 states and 209544 transitions. [2023-12-19 22:35:23,354 INFO L78 Accepts]: Start accepts. Automaton has 115829 states and 209544 transitions. Word has length 223 [2023-12-19 22:35:23,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:35:23,355 INFO L495 AbstractCegarLoop]: Abstraction has 115829 states and 209544 transitions. [2023-12-19 22:35:23,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.0) internal successors, (135), 9 states have internal predecessors, (135), 6 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2023-12-19 22:35:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 115829 states and 209544 transitions. [2023-12-19 22:35:23,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-19 22:35:23,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:35:23,390 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:35:23,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 22:35:23,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:35:23,612 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:35:23,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:35:23,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2070240623, now seen corresponding path program 1 times [2023-12-19 22:35:23,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:35:23,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309536434] [2023-12-19 22:35:23,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:35:23,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:35:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:23,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:35:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:23,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:35:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:23,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:35:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:35:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:35:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:35:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:35:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:35:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:35:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:35:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:35:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:35:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:35:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:35:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 22:35:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:35:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 22:35:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 22:35:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 22:35:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 22:35:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-19 22:35:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-19 22:35:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-19 22:35:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-19 22:35:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-19 22:35:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-19 22:35:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-19 22:35:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-12-19 22:35:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-12-19 22:35:24,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:35:24,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309536434] [2023-12-19 22:35:24,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309536434] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:35:24,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263285539] [2023-12-19 22:35:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:35:24,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:35:24,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:35:24,459 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) [2023-12-19 22:35:24,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 22:35:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:24,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:35:24,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:35:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-12-19 22:35:24,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:35:24,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263285539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:35:24,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:35:24,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-12-19 22:35:24,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036182311] [2023-12-19 22:35:24,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:35:24,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:35:24,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:35:24,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:35:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:35:24,827 INFO L87 Difference]: Start difference. First operand 115829 states and 209544 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-12-19 22:36:11,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:36:11,541 INFO L93 Difference]: Finished difference Result 236925 states and 435969 transitions. [2023-12-19 22:36:11,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:36:11,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 251 [2023-12-19 22:36:11,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:36:12,828 INFO L225 Difference]: With dead ends: 236925 [2023-12-19 22:36:12,828 INFO L226 Difference]: Without dead ends: 121275 [2023-12-19 22:36:13,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:36:13,618 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 210 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:36:13,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2120 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:36:13,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121275 states.