/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_spec13_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 21:58:23,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 21:58:23,726 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 21:58:23,729 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 21:58:23,729 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 21:58:23,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 21:58:23,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 21:58:23,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 21:58:23,746 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 21:58:23,746 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 21:58:23,747 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 21:58:23,747 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 21:58:23,747 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 21:58:23,747 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 21:58:23,748 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 21:58:23,748 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 21:58:23,748 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 21:58:23,748 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 21:58:23,748 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 21:58:23,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 21:58:23,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 21:58:23,752 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 21:58:23,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 21:58:23,752 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 21:58:23,752 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 21:58:23,753 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 21:58:23,753 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 21:58:23,753 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 21:58:23,753 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 21:58:23,754 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 21:58:23,754 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 21:58:23,754 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 21:58:23,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 21:58:23,755 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 21:58:23,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 21:58:23,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 21:58:23,755 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 21:58:23,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 21:58:23,755 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 21:58:23,755 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 21:58:23,755 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 21:58:23,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 21:58:23,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 21:58:23,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 21:58:23,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 21:58:23,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 21:58:23,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 21:58:23,957 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 21:58:23,957 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 21:58:23,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2023-12-19 21:58:24,870 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 21:58:25,093 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 21:58:25,093 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2023-12-19 21:58:25,109 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac082a638/e336729007a44fa0ad83ee5cb42ff4ec/FLAG301bc66cc [2023-12-19 21:58:25,124 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac082a638/e336729007a44fa0ad83ee5cb42ff4ec [2023-12-19 21:58:25,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 21:58:25,130 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 21:58:25,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 21:58:25,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 21:58:25,134 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 21:58:25,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:58:25" (1/1) ... [2023-12-19 21:58:25,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c6c4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:25, skipping insertion in model container [2023-12-19 21:58:25,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:58:25" (1/1) ... [2023-12-19 21:58:25,191 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 21:58:25,286 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_spec13_product22.cil.c[1811,1824] [2023-12-19 21:58:25,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 21:58:25,529 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 21:58:25,535 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-12-19 21:58:25,536 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [68] [2023-12-19 21:58:25,537 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [77] [2023-12-19 21:58:25,537 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [443] [2023-12-19 21:58:25,537 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2020] [2023-12-19 21:58:25,537 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2682] [2023-12-19 21:58:25,538 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2775] [2023-12-19 21:58:25,540 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2893] [2023-12-19 21:58:25,541 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2931] [2023-12-19 21:58:25,541 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [3279] [2023-12-19 21:58:25,545 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_spec13_product22.cil.c[1811,1824] [2023-12-19 21:58:25,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 21:58:25,663 INFO L206 MainTranslator]: Completed translation [2023-12-19 21:58:25,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:25 WrapperNode [2023-12-19 21:58:25,663 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 21:58:25,664 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 21:58:25,664 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 21:58:25,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 21:58:25,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:25" (1/1) ... [2023-12-19 21:58:25,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:25" (1/1) ... [2023-12-19 21:58:25,733 INFO L138 Inliner]: procedures = 92, calls = 344, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 838 [2023-12-19 21:58:25,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 21:58:25,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 21:58:25,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 21:58:25,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 21:58:25,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:25" (1/1) ... [2023-12-19 21:58:25,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:25" (1/1) ... [2023-12-19 21:58:25,750 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:25" (1/1) ... [2023-12-19 21:58:25,777 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 21:58:25,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:25" (1/1) ... [2023-12-19 21:58:25,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:25" (1/1) ... [2023-12-19 21:58:25,789 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:25" (1/1) ... [2023-12-19 21:58:25,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:25" (1/1) ... [2023-12-19 21:58:25,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:25" (1/1) ... [2023-12-19 21:58:25,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:25" (1/1) ... [2023-12-19 21:58:25,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 21:58:25,819 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 21:58:25,819 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 21:58:25,819 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 21:58:25,821 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:25" (1/1) ... [2023-12-19 21:58:25,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 21:58:25,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:25,855 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 21:58:25,873 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 21:58:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-12-19 21:58:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-12-19 21:58:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 21:58:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-12-19 21:58:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-12-19 21:58:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-19 21:58:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-19 21:58:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-12-19 21:58:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-12-19 21:58:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-19 21:58:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-19 21:58:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-19 21:58:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-19 21:58:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-12-19 21:58:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-12-19 21:58:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-19 21:58:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-19 21:58:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-19 21:58:25,881 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-19 21:58:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-19 21:58:25,881 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-19 21:58:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-19 21:58:25,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-19 21:58:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-19 21:58:25,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-19 21:58:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-19 21:58:25,881 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-19 21:58:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-19 21:58:25,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-19 21:58:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-19 21:58:25,882 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-19 21:58:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-19 21:58:25,882 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-19 21:58:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-19 21:58:25,882 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-19 21:58:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-19 21:58:25,882 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-19 21:58:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-19 21:58:25,882 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-19 21:58:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 21:58:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 21:58:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 21:58:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 21:58:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 21:58:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 21:58:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-19 21:58:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-19 21:58:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-19 21:58:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-19 21:58:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-19 21:58:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-19 21:58:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-19 21:58:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-19 21:58:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-19 21:58:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-19 21:58:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-19 21:58:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-19 21:58:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-19 21:58:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-19 21:58:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-12-19 21:58:25,883 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-12-19 21:58:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-19 21:58:25,883 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-19 21:58:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-19 21:58:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-19 21:58:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-19 21:58:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-19 21:58:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-12-19 21:58:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-12-19 21:58:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-12-19 21:58:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-12-19 21:58:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 21:58:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 21:58:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-19 21:58:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-19 21:58:26,036 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 21:58:26,038 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 21:58:26,747 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 21:58:26,821 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 21:58:26,821 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-19 21:58:26,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 09:58:26 BoogieIcfgContainer [2023-12-19 21:58:26,821 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 21:58:26,823 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 21:58:26,823 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 21:58:26,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 21:58:26,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 09:58:25" (1/3) ... [2023-12-19 21:58:26,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b0589a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 09:58:26, skipping insertion in model container [2023-12-19 21:58:26,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:25" (2/3) ... [2023-12-19 21:58:26,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b0589a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 09:58:26, skipping insertion in model container [2023-12-19 21:58:26,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 09:58:26" (3/3) ... [2023-12-19 21:58:26,827 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2023-12-19 21:58:26,838 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 21:58:26,838 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 21:58:26,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 21:58:26,890 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;@2c9d6009, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 21:58:26,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 21:58:26,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 577 states, 447 states have (on average 1.7248322147651007) internal successors, (771), 467 states have internal predecessors, (771), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-19 21:58:26,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-19 21:58:26,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:26,925 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:26,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:26,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:26,929 INFO L85 PathProgramCache]: Analyzing trace with hash 45902878, now seen corresponding path program 1 times [2023-12-19 21:58:26,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:26,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183026208] [2023-12-19 21:58:26,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:26,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 21:58:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 21:58:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 21:58:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 21:58:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 21:58:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 21:58:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 21:58:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 21:58:27,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:27,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183026208] [2023-12-19 21:58:27,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183026208] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:27,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477103293] [2023-12-19 21:58:27,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:27,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:27,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:27,847 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 21:58:27,876 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 21:58:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 21:58:28,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 21:58:28,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:28,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477103293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:28,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:28,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2023-12-19 21:58:28,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122340118] [2023-12-19 21:58:28,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:28,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 21:58:28,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:28,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 21:58:28,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 21:58:28,202 INFO L87 Difference]: Start difference. First operand has 577 states, 447 states have (on average 1.7248322147651007) internal successors, (771), 467 states have internal predecessors, (771), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 21:58:28,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:28,325 INFO L93 Difference]: Finished difference Result 1138 states and 1939 transitions. [2023-12-19 21:58:28,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 21:58:28,328 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2023-12-19 21:58:28,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:28,341 INFO L225 Difference]: With dead ends: 1138 [2023-12-19 21:58:28,341 INFO L226 Difference]: Without dead ends: 571 [2023-12-19 21:58:28,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 21:58:28,356 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:28,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 947 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:58:28,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2023-12-19 21:58:28,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2023-12-19 21:58:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 444 states have (on average 1.7004504504504505) internal successors, (755), 462 states have internal predecessors, (755), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 21:58:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 956 transitions. [2023-12-19 21:58:28,436 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 956 transitions. Word has length 84 [2023-12-19 21:58:28,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:28,438 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 956 transitions. [2023-12-19 21:58:28,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 21:58:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 956 transitions. [2023-12-19 21:58:28,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-19 21:58:28,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:28,446 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:28,456 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 21:58:28,654 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 21:58:28,654 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:28,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:28,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1452086658, now seen corresponding path program 1 times [2023-12-19 21:58:28,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:28,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126373901] [2023-12-19 21:58:28,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:28,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 21:58:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 21:58:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 21:58:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 21:58:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 21:58:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 21:58:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 21:58:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 21:58:29,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:29,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126373901] [2023-12-19 21:58:29,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126373901] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:29,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722668728] [2023-12-19 21:58:29,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:29,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:29,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:29,154 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 21:58:29,179 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 21:58:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:58:29,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 21:58:29,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:29,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722668728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:29,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:29,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-19 21:58:29,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632682324] [2023-12-19 21:58:29,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:29,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:58:29,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:29,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:58:29,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 21:58:29,442 INFO L87 Difference]: Start difference. First operand 571 states and 956 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 21:58:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:29,555 INFO L93 Difference]: Finished difference Result 1148 states and 1925 transitions. [2023-12-19 21:58:29,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 21:58:29,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2023-12-19 21:58:29,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:29,561 INFO L225 Difference]: With dead ends: 1148 [2023-12-19 21:58:29,561 INFO L226 Difference]: Without dead ends: 580 [2023-12-19 21:58:29,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-19 21:58:29,565 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 26 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:29,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2769 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:58:29,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-12-19 21:58:29,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2023-12-19 21:58:29,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 452 states have (on average 1.7013274336283186) internal successors, (769), 470 states have internal predecessors, (769), 102 states have call successors, (102), 27 states have call predecessors, (102), 25 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 21:58:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 970 transitions. [2023-12-19 21:58:29,583 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 970 transitions. Word has length 84 [2023-12-19 21:58:29,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:29,583 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 970 transitions. [2023-12-19 21:58:29,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 21:58:29,583 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 970 transitions. [2023-12-19 21:58:29,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 21:58:29,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:29,585 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:29,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 21:58:29,790 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 21:58:29,790 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:29,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:29,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1293983062, now seen corresponding path program 1 times [2023-12-19 21:58:29,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:29,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399167196] [2023-12-19 21:58:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:29,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 21:58:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 21:58:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 21:58:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 21:58:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 21:58:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 21:58:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 21:58:30,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:30,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399167196] [2023-12-19 21:58:30,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399167196] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:30,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576998673] [2023-12-19 21:58:30,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:30,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:30,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:30,380 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 21:58:30,408 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 21:58:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:58:30,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:30,669 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 21:58:30,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:30,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576998673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:30,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:30,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-12-19 21:58:30,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854201302] [2023-12-19 21:58:30,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:30,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:58:30,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:30,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:58:30,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-19 21:58:30,671 INFO L87 Difference]: Start difference. First operand 580 states and 970 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 21:58:30,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:30,828 INFO L93 Difference]: Finished difference Result 1199 states and 2019 transitions. [2023-12-19 21:58:30,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 21:58:30,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2023-12-19 21:58:30,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:30,833 INFO L225 Difference]: With dead ends: 1199 [2023-12-19 21:58:30,833 INFO L226 Difference]: Without dead ends: 624 [2023-12-19 21:58:30,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-19 21:58:30,836 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 168 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:30,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2615 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:30,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2023-12-19 21:58:30,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2023-12-19 21:58:30,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 495 states have (on average 1.7212121212121212) internal successors, (852), 513 states have internal predecessors, (852), 102 states have call successors, (102), 28 states have call predecessors, (102), 26 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 21:58:30,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 1053 transitions. [2023-12-19 21:58:30,852 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 1053 transitions. Word has length 86 [2023-12-19 21:58:30,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:30,853 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 1053 transitions. [2023-12-19 21:58:30,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 21:58:30,853 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 1053 transitions. [2023-12-19 21:58:30,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 21:58:30,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:30,854 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:30,864 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 21:58:31,068 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 21:58:31,068 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:31,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:31,069 INFO L85 PathProgramCache]: Analyzing trace with hash 210519474, now seen corresponding path program 1 times [2023-12-19 21:58:31,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:31,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872142032] [2023-12-19 21:58:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:31,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:31,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:31,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:31,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 21:58:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:31,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 21:58:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:31,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:31,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 21:58:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:31,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 21:58:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:31,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 21:58:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:31,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 21:58:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 21:58:31,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:31,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872142032] [2023-12-19 21:58:31,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872142032] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:31,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834710349] [2023-12-19 21:58:31,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:31,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:31,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:31,527 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 21:58:31,531 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 21:58:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:31,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 21:58:31,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 21:58:31,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:31,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834710349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:31,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:31,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-19 21:58:31,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019502396] [2023-12-19 21:58:31,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:31,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 21:58:31,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:31,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 21:58:31,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-19 21:58:31,833 INFO L87 Difference]: Start difference. First operand 624 states and 1053 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 21:58:31,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:31,948 INFO L93 Difference]: Finished difference Result 1266 states and 2136 transitions. [2023-12-19 21:58:31,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 21:58:31,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2023-12-19 21:58:31,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:31,951 INFO L225 Difference]: With dead ends: 1266 [2023-12-19 21:58:31,951 INFO L226 Difference]: Without dead ends: 647 [2023-12-19 21:58:31,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-12-19 21:58:31,954 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 113 mSDsluCounter, 4536 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5463 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:31,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5463 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-12-19 21:58:31,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 636. [2023-12-19 21:58:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 504 states have (on average 1.7182539682539681) internal successors, (866), 524 states have internal predecessors, (866), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2023-12-19 21:58:31,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1073 transitions. [2023-12-19 21:58:31,971 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1073 transitions. Word has length 88 [2023-12-19 21:58:31,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:31,971 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 1073 transitions. [2023-12-19 21:58:31,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 21:58:31,972 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1073 transitions. [2023-12-19 21:58:31,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 21:58:31,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:31,973 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:31,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 21:58:32,182 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 21:58:32,183 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:32,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:32,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1885228893, now seen corresponding path program 1 times [2023-12-19 21:58:32,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:32,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862404020] [2023-12-19 21:58:32,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:32,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 21:58:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 21:58:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 21:58:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 21:58:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 21:58:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 21:58:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-19 21:58:32,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:32,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862404020] [2023-12-19 21:58:32,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862404020] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:32,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788634621] [2023-12-19 21:58:32,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:32,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:32,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:32,632 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 21:58:32,635 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 21:58:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 21:58:32,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 21:58:32,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:32,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788634621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:32,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:32,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-19 21:58:32,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73014170] [2023-12-19 21:58:32,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:32,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 21:58:32,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:32,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 21:58:32,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-19 21:58:32,935 INFO L87 Difference]: Start difference. First operand 636 states and 1073 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 21:58:33,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:33,048 INFO L93 Difference]: Finished difference Result 1284 states and 2165 transitions. [2023-12-19 21:58:33,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 21:58:33,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2023-12-19 21:58:33,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:33,052 INFO L225 Difference]: With dead ends: 1284 [2023-12-19 21:58:33,052 INFO L226 Difference]: Without dead ends: 655 [2023-12-19 21:58:33,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-19 21:58:33,055 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 124 mSDsluCounter, 4524 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5451 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:33,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5451 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-12-19 21:58:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 636. [2023-12-19 21:58:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 504 states have (on average 1.7182539682539681) internal successors, (866), 524 states have internal predecessors, (866), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2023-12-19 21:58:33,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1073 transitions. [2023-12-19 21:58:33,090 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1073 transitions. Word has length 89 [2023-12-19 21:58:33,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:33,090 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 1073 transitions. [2023-12-19 21:58:33,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 21:58:33,091 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1073 transitions. [2023-12-19 21:58:33,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 21:58:33,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:33,092 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:33,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 21:58:33,301 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 21:58:33,301 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:33,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:33,302 INFO L85 PathProgramCache]: Analyzing trace with hash -300952191, now seen corresponding path program 1 times [2023-12-19 21:58:33,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:33,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506580329] [2023-12-19 21:58:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:33,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 21:58:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 21:58:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 21:58:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 21:58:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 21:58:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 21:58:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 21:58:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 21:58:33,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:33,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506580329] [2023-12-19 21:58:33,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506580329] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:33,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243349320] [2023-12-19 21:58:33,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:33,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:33,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:33,696 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 21:58:33,721 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 21:58:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:58:33,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-19 21:58:33,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:33,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243349320] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:33,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:33,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-19 21:58:33,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684446326] [2023-12-19 21:58:33,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:33,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:58:33,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:33,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:58:33,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 21:58:33,961 INFO L87 Difference]: Start difference. First operand 636 states and 1073 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 21:58:34,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:34,054 INFO L93 Difference]: Finished difference Result 1280 states and 2157 transitions. [2023-12-19 21:58:34,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 21:58:34,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2023-12-19 21:58:34,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:34,057 INFO L225 Difference]: With dead ends: 1280 [2023-12-19 21:58:34,057 INFO L226 Difference]: Without dead ends: 647 [2023-12-19 21:58:34,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-19 21:58:34,059 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 20 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:34,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2770 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:58:34,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-12-19 21:58:34,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 645. [2023-12-19 21:58:34,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-12-19 21:58:34,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2023-12-19 21:58:34,074 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 89 [2023-12-19 21:58:34,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:34,074 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2023-12-19 21:58:34,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 21:58:34,074 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2023-12-19 21:58:34,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 21:58:34,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:34,075 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:34,084 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 21:58:34,284 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 21:58:34,284 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:34,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:34,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1535905988, now seen corresponding path program 1 times [2023-12-19 21:58:34,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:34,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777566070] [2023-12-19 21:58:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:34,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 21:58:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 21:58:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 21:58:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 21:58:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 21:58:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,500 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 21:58:34,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:34,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777566070] [2023-12-19 21:58:34,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777566070] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:34,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273456409] [2023-12-19 21:58:34,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:34,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:34,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:34,501 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 21:58:34,520 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 21:58:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 21:58:34,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:34,758 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 21:58:34,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:34,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273456409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:34,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:34,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-19 21:58:34,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533086365] [2023-12-19 21:58:34,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:34,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 21:58:34,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:34,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 21:58:34,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-19 21:58:34,760 INFO L87 Difference]: Start difference. First operand 645 states and 1081 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 21:58:34,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:34,858 INFO L93 Difference]: Finished difference Result 1293 states and 2168 transitions. [2023-12-19 21:58:34,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 21:58:34,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-12-19 21:58:34,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:34,861 INFO L225 Difference]: With dead ends: 1293 [2023-12-19 21:58:34,861 INFO L226 Difference]: Without dead ends: 666 [2023-12-19 21:58:34,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-19 21:58:34,864 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 135 mSDsluCounter, 4512 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5439 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:34,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 5439 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:34,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-12-19 21:58:34,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 645. [2023-12-19 21:58:34,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-12-19 21:58:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2023-12-19 21:58:34,879 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 78 [2023-12-19 21:58:34,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:34,879 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2023-12-19 21:58:34,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 21:58:34,879 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2023-12-19 21:58:34,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 21:58:34,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:34,881 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:34,890 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 21:58:35,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:35,088 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:35,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:35,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1950057538, now seen corresponding path program 1 times [2023-12-19 21:58:35,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:35,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266755056] [2023-12-19 21:58:35,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:35,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 21:58:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 21:58:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 21:58:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 21:58:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 21:58:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 21:58:35,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:35,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266755056] [2023-12-19 21:58:35,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266755056] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:35,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443018990] [2023-12-19 21:58:35,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:35,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:35,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:35,331 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 21:58:35,335 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 21:58:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 21:58:35,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 21:58:35,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:35,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443018990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:35,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:35,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-12-19 21:58:35,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524528436] [2023-12-19 21:58:35,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:35,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 21:58:35,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:35,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 21:58:35,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-19 21:58:35,619 INFO L87 Difference]: Start difference. First operand 645 states and 1081 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 21:58:35,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:35,780 INFO L93 Difference]: Finished difference Result 1295 states and 2171 transitions. [2023-12-19 21:58:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 21:58:35,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-12-19 21:58:35,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:35,783 INFO L225 Difference]: With dead ends: 1295 [2023-12-19 21:58:35,783 INFO L226 Difference]: Without dead ends: 668 [2023-12-19 21:58:35,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-19 21:58:35,787 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 131 mSDsluCounter, 5409 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 6326 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:35,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 6326 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:35,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2023-12-19 21:58:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 645. [2023-12-19 21:58:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-12-19 21:58:35,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2023-12-19 21:58:35,803 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 78 [2023-12-19 21:58:35,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:35,805 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2023-12-19 21:58:35,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 21:58:35,805 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2023-12-19 21:58:35,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 21:58:35,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:35,806 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:35,820 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 21:58:36,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 21:58:36,013 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:36,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:36,014 INFO L85 PathProgramCache]: Analyzing trace with hash 378866343, now seen corresponding path program 1 times [2023-12-19 21:58:36,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:36,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305858548] [2023-12-19 21:58:36,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:36,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:36,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:36,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:36,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 21:58:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:36,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:36,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 21:58:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:36,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:36,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 21:58:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:36,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 21:58:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:36,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 21:58:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:36,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 21:58:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-19 21:58:36,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:36,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305858548] [2023-12-19 21:58:36,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305858548] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:36,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218815376] [2023-12-19 21:58:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:36,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:36,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:36,437 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 21:58:36,461 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 21:58:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:36,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 21:58:36,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 21:58:36,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:36,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218815376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:36,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:36,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-19 21:58:36,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824570289] [2023-12-19 21:58:36,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:36,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 21:58:36,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:36,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 21:58:36,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-19 21:58:36,743 INFO L87 Difference]: Start difference. First operand 645 states and 1081 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 21:58:36,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:36,919 INFO L93 Difference]: Finished difference Result 1295 states and 2171 transitions. [2023-12-19 21:58:36,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 21:58:36,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2023-12-19 21:58:36,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:36,923 INFO L225 Difference]: With dead ends: 1295 [2023-12-19 21:58:36,923 INFO L226 Difference]: Without dead ends: 668 [2023-12-19 21:58:36,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 21:58:36,925 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 141 mSDsluCounter, 5397 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6314 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:36,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6314 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:36,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2023-12-19 21:58:36,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 645. [2023-12-19 21:58:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-12-19 21:58:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2023-12-19 21:58:36,941 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 91 [2023-12-19 21:58:36,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:36,941 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2023-12-19 21:58:36,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 21:58:36,942 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2023-12-19 21:58:36,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 21:58:36,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:36,943 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:36,952 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 21:58:37,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:37,149 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:37,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:37,150 INFO L85 PathProgramCache]: Analyzing trace with hash -653020125, now seen corresponding path program 1 times [2023-12-19 21:58:37,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:37,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957103365] [2023-12-19 21:58:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:37,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 21:58:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 21:58:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 21:58:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 21:58:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 21:58:37,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:37,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957103365] [2023-12-19 21:58:37,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957103365] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:37,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963508753] [2023-12-19 21:58:37,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:37,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:37,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:37,357 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 21:58:37,384 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 21:58:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 21:58:37,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:37,639 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 21:58:37,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:37,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963508753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:37,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:37,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-12-19 21:58:37,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482161095] [2023-12-19 21:58:37,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:37,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 21:58:37,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:37,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 21:58:37,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-19 21:58:37,641 INFO L87 Difference]: Start difference. First operand 645 states and 1081 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 21:58:37,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:37,795 INFO L93 Difference]: Finished difference Result 1287 states and 2157 transitions. [2023-12-19 21:58:37,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 21:58:37,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 80 [2023-12-19 21:58:37,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:37,799 INFO L225 Difference]: With dead ends: 1287 [2023-12-19 21:58:37,799 INFO L226 Difference]: Without dead ends: 660 [2023-12-19 21:58:37,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-19 21:58:37,801 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 151 mSDsluCounter, 5385 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 6302 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:37,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 6302 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:37,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-12-19 21:58:37,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 645. [2023-12-19 21:58:37,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-12-19 21:58:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2023-12-19 21:58:37,814 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 80 [2023-12-19 21:58:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:37,815 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2023-12-19 21:58:37,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 21:58:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2023-12-19 21:58:37,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 21:58:37,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:37,816 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:37,825 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 21:58:38,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 21:58:38,023 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:38,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:38,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1177552581, now seen corresponding path program 1 times [2023-12-19 21:58:38,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:38,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199274671] [2023-12-19 21:58:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:38,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 21:58:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 21:58:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 21:58:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 21:58:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 21:58:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 21:58:38,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:38,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199274671] [2023-12-19 21:58:38,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199274671] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:38,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281545815] [2023-12-19 21:58:38,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:38,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:38,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:38,411 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 21:58:38,432 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 21:58:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:58:38,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:38,673 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 21:58:38,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:38,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281545815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:38,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:38,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-19 21:58:38,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449274621] [2023-12-19 21:58:38,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:38,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:58:38,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:38,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:58:38,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 21:58:38,674 INFO L87 Difference]: Start difference. First operand 645 states and 1081 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 21:58:38,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:38,728 INFO L93 Difference]: Finished difference Result 1261 states and 2119 transitions. [2023-12-19 21:58:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 21:58:38,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2023-12-19 21:58:38,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:38,732 INFO L225 Difference]: With dead ends: 1261 [2023-12-19 21:58:38,732 INFO L226 Difference]: Without dead ends: 645 [2023-12-19 21:58:38,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-19 21:58:38,735 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 35 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:38,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2768 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:58:38,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-19 21:58:38,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2023-12-19 21:58:38,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.69921875) internal successors, (870), 532 states have internal predecessors, (870), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-12-19 21:58:38,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1076 transitions. [2023-12-19 21:58:38,748 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1076 transitions. Word has length 92 [2023-12-19 21:58:38,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:38,748 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1076 transitions. [2023-12-19 21:58:38,748 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 21:58:38,748 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1076 transitions. [2023-12-19 21:58:38,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 21:58:38,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:38,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:38,759 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 21:58:38,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 21:58:38,957 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:38,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:38,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1965468872, now seen corresponding path program 1 times [2023-12-19 21:58:38,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:38,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265960885] [2023-12-19 21:58:38,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:38,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 21:58:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 21:58:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 21:58:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 21:58:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 21:58:39,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:39,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265960885] [2023-12-19 21:58:39,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265960885] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:39,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787120064] [2023-12-19 21:58:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:39,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:39,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:39,173 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 21:58:39,192 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 21:58:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:58:39,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 21:58:39,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:39,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787120064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:39,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:39,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-12-19 21:58:39,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388758069] [2023-12-19 21:58:39,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:39,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:58:39,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:39,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:58:39,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-19 21:58:39,404 INFO L87 Difference]: Start difference. First operand 645 states and 1076 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 21:58:39,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:39,559 INFO L93 Difference]: Finished difference Result 1257 states and 2110 transitions. [2023-12-19 21:58:39,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 21:58:39,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2023-12-19 21:58:39,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:39,562 INFO L225 Difference]: With dead ends: 1257 [2023-12-19 21:58:39,562 INFO L226 Difference]: Without dead ends: 697 [2023-12-19 21:58:39,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-19 21:58:39,564 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 239 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:39,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2604 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:39,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2023-12-19 21:58:39,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 689. [2023-12-19 21:58:39,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 555 states have (on average 1.7171171171171171) internal successors, (953), 575 states have internal predecessors, (953), 103 states have call successors, (103), 30 states have call predecessors, (103), 30 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2023-12-19 21:58:39,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1158 transitions. [2023-12-19 21:58:39,577 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1158 transitions. Word has length 81 [2023-12-19 21:58:39,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:39,577 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1158 transitions. [2023-12-19 21:58:39,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 21:58:39,577 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1158 transitions. [2023-12-19 21:58:39,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 21:58:39,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:39,579 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:39,585 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 21:58:39,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 21:58:39,785 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:39,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:39,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1005732585, now seen corresponding path program 1 times [2023-12-19 21:58:39,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:39,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853198877] [2023-12-19 21:58:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:39,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 21:58:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 21:58:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 21:58:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 21:58:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 21:58:40,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:40,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853198877] [2023-12-19 21:58:40,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853198877] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:40,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592834994] [2023-12-19 21:58:40,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:40,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:40,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:40,024 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 21:58:40,052 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 21:58:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 21:58:40,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:40,276 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 21:58:40,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:40,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592834994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:40,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:40,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-12-19 21:58:40,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347539571] [2023-12-19 21:58:40,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:40,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 21:58:40,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:40,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 21:58:40,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-12-19 21:58:40,278 INFO L87 Difference]: Start difference. First operand 689 states and 1158 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 21:58:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:40,401 INFO L93 Difference]: Finished difference Result 1281 states and 2144 transitions. [2023-12-19 21:58:40,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 21:58:40,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 82 [2023-12-19 21:58:40,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:40,423 INFO L225 Difference]: With dead ends: 1281 [2023-12-19 21:58:40,423 INFO L226 Difference]: Without dead ends: 721 [2023-12-19 21:58:40,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-19 21:58:40,426 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 113 mSDsluCounter, 4537 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5464 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:40,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5464 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:40,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2023-12-19 21:58:40,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 701. [2023-12-19 21:58:40,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7145390070921986) internal successors, (967), 586 states have internal predecessors, (967), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-12-19 21:58:40,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1176 transitions. [2023-12-19 21:58:40,439 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1176 transitions. Word has length 82 [2023-12-19 21:58:40,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:40,440 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1176 transitions. [2023-12-19 21:58:40,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 21:58:40,440 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1176 transitions. [2023-12-19 21:58:40,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 21:58:40,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:40,442 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:40,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 21:58:40,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 21:58:40,648 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:40,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:40,649 INFO L85 PathProgramCache]: Analyzing trace with hash 712217724, now seen corresponding path program 1 times [2023-12-19 21:58:40,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:40,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109369874] [2023-12-19 21:58:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:40,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 21:58:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 21:58:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 21:58:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 21:58:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 21:58:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 21:58:41,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:41,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109369874] [2023-12-19 21:58:41,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109369874] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:41,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513303596] [2023-12-19 21:58:41,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:41,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:41,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:41,072 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 21:58:41,077 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 21:58:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 21:58:41,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 21:58:41,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:41,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513303596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:41,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:41,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-19 21:58:41,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239066785] [2023-12-19 21:58:41,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:41,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 21:58:41,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:41,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 21:58:41,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-19 21:58:41,366 INFO L87 Difference]: Start difference. First operand 701 states and 1176 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 21:58:41,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:41,486 INFO L93 Difference]: Finished difference Result 1289 states and 2157 transitions. [2023-12-19 21:58:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 21:58:41,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2023-12-19 21:58:41,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:41,489 INFO L225 Difference]: With dead ends: 1289 [2023-12-19 21:58:41,489 INFO L226 Difference]: Without dead ends: 729 [2023-12-19 21:58:41,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-12-19 21:58:41,518 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 124 mSDsluCounter, 4525 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5452 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:41,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5452 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:41,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2023-12-19 21:58:41,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 701. [2023-12-19 21:58:41,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7145390070921986) internal successors, (967), 586 states have internal predecessors, (967), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-12-19 21:58:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1176 transitions. [2023-12-19 21:58:41,534 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1176 transitions. Word has length 95 [2023-12-19 21:58:41,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:41,535 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1176 transitions. [2023-12-19 21:58:41,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 21:58:41,535 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1176 transitions. [2023-12-19 21:58:41,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 21:58:41,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:41,537 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:41,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 21:58:41,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:41,743 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:41,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:41,744 INFO L85 PathProgramCache]: Analyzing trace with hash 440502268, now seen corresponding path program 1 times [2023-12-19 21:58:41,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:41,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006679272] [2023-12-19 21:58:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:41,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 21:58:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 21:58:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 21:58:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 21:58:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 21:58:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 21:58:42,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:42,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006679272] [2023-12-19 21:58:42,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006679272] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:42,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773059560] [2023-12-19 21:58:42,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:42,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:42,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:42,149 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 21:58:42,163 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 21:58:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 21:58:42,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 21:58:42,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:42,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773059560] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:42,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:42,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-12-19 21:58:42,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120622859] [2023-12-19 21:58:42,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:42,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 21:58:42,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:42,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 21:58:42,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-12-19 21:58:42,445 INFO L87 Difference]: Start difference. First operand 701 states and 1176 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 21:58:42,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:42,614 INFO L93 Difference]: Finished difference Result 1291 states and 2159 transitions. [2023-12-19 21:58:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 21:58:42,614 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2023-12-19 21:58:42,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:42,617 INFO L225 Difference]: With dead ends: 1291 [2023-12-19 21:58:42,617 INFO L226 Difference]: Without dead ends: 731 [2023-12-19 21:58:42,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-12-19 21:58:42,620 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 132 mSDsluCounter, 5410 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6327 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:42,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6327 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:42,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-12-19 21:58:42,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 701. [2023-12-19 21:58:42,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7145390070921986) internal successors, (967), 586 states have internal predecessors, (967), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-12-19 21:58:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1176 transitions. [2023-12-19 21:58:42,633 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1176 transitions. Word has length 95 [2023-12-19 21:58:42,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:42,633 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1176 transitions. [2023-12-19 21:58:42,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 21:58:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1176 transitions. [2023-12-19 21:58:42,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 21:58:42,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:42,635 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:42,644 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 21:58:42,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 21:58:42,842 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:42,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:42,842 INFO L85 PathProgramCache]: Analyzing trace with hash 462298868, now seen corresponding path program 1 times [2023-12-19 21:58:42,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:42,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899177794] [2023-12-19 21:58:42,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:42,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 21:58:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 21:58:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 21:58:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 21:58:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 21:58:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,039 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 21:58:43,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:43,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899177794] [2023-12-19 21:58:43,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899177794] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:43,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750200894] [2023-12-19 21:58:43,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:43,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:43,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:43,040 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 21:58:43,043 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 21:58:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:58:43,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:43,242 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 21:58:43,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:43,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750200894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:43,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:43,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-19 21:58:43,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166030538] [2023-12-19 21:58:43,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:43,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:58:43,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:43,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:58:43,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 21:58:43,243 INFO L87 Difference]: Start difference. First operand 701 states and 1176 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 21:58:43,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:43,298 INFO L93 Difference]: Finished difference Result 1333 states and 2238 transitions. [2023-12-19 21:58:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 21:58:43,298 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2023-12-19 21:58:43,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:43,301 INFO L225 Difference]: With dead ends: 1333 [2023-12-19 21:58:43,301 INFO L226 Difference]: Without dead ends: 701 [2023-12-19 21:58:43,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 21:58:43,303 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 10 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:43,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2770 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:58:43,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2023-12-19 21:58:43,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 701. [2023-12-19 21:58:43,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7092198581560283) internal successors, (964), 586 states have internal predecessors, (964), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-12-19 21:58:43,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1173 transitions. [2023-12-19 21:58:43,317 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1173 transitions. Word has length 83 [2023-12-19 21:58:43,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:43,317 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1173 transitions. [2023-12-19 21:58:43,317 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 21:58:43,317 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1173 transitions. [2023-12-19 21:58:43,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-19 21:58:43,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:43,319 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:43,325 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 21:58:43,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 21:58:43,525 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:43,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:43,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1042106081, now seen corresponding path program 1 times [2023-12-19 21:58:43,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:43,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132247694] [2023-12-19 21:58:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:43,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 21:58:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 21:58:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 21:58:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 21:58:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 21:58:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 21:58:43,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:43,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132247694] [2023-12-19 21:58:43,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132247694] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:43,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735079866] [2023-12-19 21:58:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:43,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:43,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:43,959 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 21:58:43,980 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 21:58:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 21:58:44,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 21:58:44,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:44,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735079866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:44,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:44,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-12-19 21:58:44,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644788379] [2023-12-19 21:58:44,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:44,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 21:58:44,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:44,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 21:58:44,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-12-19 21:58:44,273 INFO L87 Difference]: Start difference. First operand 701 states and 1173 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 21:58:44,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:44,431 INFO L93 Difference]: Finished difference Result 1283 states and 2143 transitions. [2023-12-19 21:58:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 21:58:44,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2023-12-19 21:58:44,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:44,434 INFO L225 Difference]: With dead ends: 1283 [2023-12-19 21:58:44,434 INFO L226 Difference]: Without dead ends: 723 [2023-12-19 21:58:44,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-12-19 21:58:44,436 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 142 mSDsluCounter, 5383 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 6297 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:44,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 6297 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:44,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2023-12-19 21:58:44,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 701. [2023-12-19 21:58:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7092198581560283) internal successors, (964), 586 states have internal predecessors, (964), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-12-19 21:58:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1173 transitions. [2023-12-19 21:58:44,450 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1173 transitions. Word has length 96 [2023-12-19 21:58:44,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:44,450 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1173 transitions. [2023-12-19 21:58:44,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 21:58:44,450 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1173 transitions. [2023-12-19 21:58:44,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-19 21:58:44,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:44,452 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:44,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 21:58:44,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 21:58:44,658 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:44,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:44,658 INFO L85 PathProgramCache]: Analyzing trace with hash 407035319, now seen corresponding path program 1 times [2023-12-19 21:58:44,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:44,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451526416] [2023-12-19 21:58:44,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:44,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 21:58:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 21:58:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 21:58:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 21:58:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 21:58:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 21:58:45,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:45,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451526416] [2023-12-19 21:58:45,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451526416] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:45,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533509564] [2023-12-19 21:58:45,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:45,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:45,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:45,070 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 21:58:45,096 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 21:58:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 21:58:45,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 21:58:45,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:45,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533509564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:45,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:45,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-19 21:58:45,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630972711] [2023-12-19 21:58:45,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:45,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 21:58:45,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:45,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 21:58:45,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-19 21:58:45,461 INFO L87 Difference]: Start difference. First operand 701 states and 1173 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-19 21:58:47,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:47,975 INFO L93 Difference]: Finished difference Result 2438 states and 4115 transitions. [2023-12-19 21:58:47,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 21:58:47,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2023-12-19 21:58:47,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:47,982 INFO L225 Difference]: With dead ends: 2438 [2023-12-19 21:58:47,982 INFO L226 Difference]: Without dead ends: 1882 [2023-12-19 21:58:47,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-12-19 21:58:47,984 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 3087 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 3611 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3282 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 4136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 3611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:47,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3282 Valid, 1253 Invalid, 4136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 3611 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 21:58:47,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2023-12-19 21:58:48,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1715. [2023-12-19 21:58:48,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1376 states have (on average 1.7005813953488371) internal successors, (2340), 1414 states have internal predecessors, (2340), 269 states have call successors, (269), 66 states have call predecessors, (269), 69 states have return successors, (290), 249 states have call predecessors, (290), 265 states have call successors, (290) [2023-12-19 21:58:48,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2899 transitions. [2023-12-19 21:58:48,030 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2899 transitions. Word has length 97 [2023-12-19 21:58:48,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:48,030 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2899 transitions. [2023-12-19 21:58:48,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-19 21:58:48,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2899 transitions. [2023-12-19 21:58:48,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-19 21:58:48,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:48,033 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:48,042 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 21:58:48,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 21:58:48,240 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:48,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:48,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1665695133, now seen corresponding path program 1 times [2023-12-19 21:58:48,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:48,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661032205] [2023-12-19 21:58:48,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:48,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 21:58:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 21:58:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 21:58:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 21:58:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 21:58:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 21:58:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 21:58:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 21:58:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-19 21:58:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-19 21:58:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-19 21:58:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-19 21:58:49,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:49,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661032205] [2023-12-19 21:58:49,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661032205] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:49,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848190352] [2023-12-19 21:58:49,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:49,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:49,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:49,157 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 21:58:49,161 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 21:58:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 2178 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:58:49,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:49,516 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 21:58:49,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:49,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848190352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:49,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:49,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [21] total 22 [2023-12-19 21:58:49,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553296734] [2023-12-19 21:58:49,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:49,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 21:58:49,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:49,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 21:58:49,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2023-12-19 21:58:49,519 INFO L87 Difference]: Start difference. First operand 1715 states and 2899 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-19 21:58:49,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:49,618 INFO L93 Difference]: Finished difference Result 4838 states and 8274 transitions. [2023-12-19 21:58:49,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 21:58:49,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 169 [2023-12-19 21:58:49,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:49,633 INFO L225 Difference]: With dead ends: 4838 [2023-12-19 21:58:49,633 INFO L226 Difference]: Without dead ends: 3269 [2023-12-19 21:58:49,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2023-12-19 21:58:49,640 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 952 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:49,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 1848 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:58:49,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2023-12-19 21:58:49,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3250. [2023-12-19 21:58:49,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3250 states, 2605 states have (on average 1.6998080614203455) internal successors, (4428), 2672 states have internal predecessors, (4428), 515 states have call successors, (515), 123 states have call predecessors, (515), 129 states have return successors, (591), 484 states have call predecessors, (591), 509 states have call successors, (591) [2023-12-19 21:58:49,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 5534 transitions. [2023-12-19 21:58:49,749 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 5534 transitions. Word has length 169 [2023-12-19 21:58:49,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:49,749 INFO L495 AbstractCegarLoop]: Abstraction has 3250 states and 5534 transitions. [2023-12-19 21:58:49,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-19 21:58:49,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 5534 transitions. [2023-12-19 21:58:49,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-19 21:58:49,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:49,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:49,764 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 21:58:49,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:49,960 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:49,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:49,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2080328430, now seen corresponding path program 1 times [2023-12-19 21:58:49,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:49,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545929684] [2023-12-19 21:58:49,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:49,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 21:58:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 21:58:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 21:58:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 21:58:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 21:58:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 21:58:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 21:58:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 21:58:50,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:50,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545929684] [2023-12-19 21:58:50,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545929684] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:50,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45736265] [2023-12-19 21:58:50,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:50,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:50,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:50,470 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 21:58:50,477 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 21:58:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 21:58:50,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 21:58:50,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:50,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45736265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:50,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:50,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 14 [2023-12-19 21:58:50,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29429879] [2023-12-19 21:58:50,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:50,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:58:50,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:50,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:58:50,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-12-19 21:58:50,797 INFO L87 Difference]: Start difference. First operand 3250 states and 5534 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 21:58:50,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:50,967 INFO L93 Difference]: Finished difference Result 8223 states and 14020 transitions. [2023-12-19 21:58:50,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 21:58:50,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2023-12-19 21:58:50,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:50,991 INFO L225 Difference]: With dead ends: 8223 [2023-12-19 21:58:50,991 INFO L226 Difference]: Without dead ends: 5118 [2023-12-19 21:58:51,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-19 21:58:51,007 INFO L413 NwaCegarLoop]: 1283 mSDtfsCounter, 962 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:51,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 3107 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:51,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2023-12-19 21:58:51,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5110. [2023-12-19 21:58:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5110 states, 4089 states have (on average 1.673758865248227) internal successors, (6844), 4156 states have internal predecessors, (6844), 807 states have call successors, (807), 195 states have call predecessors, (807), 213 states have return successors, (1005), 786 states have call predecessors, (1005), 797 states have call successors, (1005) [2023-12-19 21:58:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5110 states to 5110 states and 8656 transitions. [2023-12-19 21:58:51,172 INFO L78 Accepts]: Start accepts. Automaton has 5110 states and 8656 transitions. Word has length 121 [2023-12-19 21:58:51,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:51,173 INFO L495 AbstractCegarLoop]: Abstraction has 5110 states and 8656 transitions. [2023-12-19 21:58:51,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 21:58:51,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5110 states and 8656 transitions. [2023-12-19 21:58:51,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 21:58:51,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:51,178 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:51,185 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 21:58:51,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:51,385 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:51,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:51,385 INFO L85 PathProgramCache]: Analyzing trace with hash 246726885, now seen corresponding path program 1 times [2023-12-19 21:58:51,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:51,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061183498] [2023-12-19 21:58:51,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:51,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 21:58:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 21:58:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 21:58:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 21:58:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 21:58:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 21:58:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 21:58:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 21:58:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-19 21:58:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-19 21:58:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-19 21:58:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-19 21:58:52,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:52,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061183498] [2023-12-19 21:58:52,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061183498] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:52,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142768003] [2023-12-19 21:58:52,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:52,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:52,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:52,179 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 21:58:52,200 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 21:58:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 2177 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 21:58:52,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 21:58:52,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 21:58:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-19 21:58:52,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142768003] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 21:58:52,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 21:58:52,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 19 [2023-12-19 21:58:52,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095765414] [2023-12-19 21:58:52,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 21:58:52,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-19 21:58:52,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:52,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-19 21:58:52,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-19 21:58:52,828 INFO L87 Difference]: Start difference. First operand 5110 states and 8656 transitions. Second operand has 19 states, 18 states have (on average 8.444444444444445) internal successors, (152), 14 states have internal predecessors, (152), 7 states have call successors, (38), 9 states have call predecessors, (38), 7 states have return successors, (37), 8 states have call predecessors, (37), 7 states have call successors, (37) [2023-12-19 21:59:25,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:59:25,979 INFO L93 Difference]: Finished difference Result 28758 states and 51833 transitions. [2023-12-19 21:59:25,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-19 21:59:25,980 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 8.444444444444445) internal successors, (152), 14 states have internal predecessors, (152), 7 states have call successors, (38), 9 states have call predecessors, (38), 7 states have return successors, (37), 8 states have call predecessors, (37), 7 states have call successors, (37) Word has length 171 [2023-12-19 21:59:25,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:59:26,096 INFO L225 Difference]: With dead ends: 28758 [2023-12-19 21:59:26,097 INFO L226 Difference]: Without dead ends: 23607 [2023-12-19 21:59:26,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 429 SyntacticMatches, 5 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3553 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=1654, Invalid=8246, Unknown=0, NotChecked=0, Total=9900 [2023-12-19 21:59:26,137 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 12249 mSDsluCounter, 8568 mSDsCounter, 0 mSdLazyCounter, 22059 mSolverCounterSat, 4229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12367 SdHoareTripleChecker+Valid, 9411 SdHoareTripleChecker+Invalid, 26288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4229 IncrementalHoareTripleChecker+Valid, 22059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2023-12-19 21:59:26,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12367 Valid, 9411 Invalid, 26288 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4229 Valid, 22059 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time] [2023-12-19 21:59:26,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23607 states. [2023-12-19 21:59:28,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23607 to 14841. [2023-12-19 21:59:28,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14841 states, 11704 states have (on average 1.6131237183868763) internal successors, (18880), 11903 states have internal predecessors, (18880), 2424 states have call successors, (2424), 625 states have call predecessors, (2424), 712 states have return successors, (3650), 2378 states have call predecessors, (3650), 2402 states have call successors, (3650) [2023-12-19 21:59:28,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14841 states to 14841 states and 24954 transitions. [2023-12-19 21:59:28,342 INFO L78 Accepts]: Start accepts. Automaton has 14841 states and 24954 transitions. Word has length 171 [2023-12-19 21:59:28,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:59:28,342 INFO L495 AbstractCegarLoop]: Abstraction has 14841 states and 24954 transitions. [2023-12-19 21:59:28,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 8.444444444444445) internal successors, (152), 14 states have internal predecessors, (152), 7 states have call successors, (38), 9 states have call predecessors, (38), 7 states have return successors, (37), 8 states have call predecessors, (37), 7 states have call successors, (37) [2023-12-19 21:59:28,343 INFO L276 IsEmpty]: Start isEmpty. Operand 14841 states and 24954 transitions. [2023-12-19 21:59:28,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 21:59:28,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:59:28,347 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:59:28,357 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 21:59:28,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:59:28,555 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:59:28,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:59:28,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1029118167, now seen corresponding path program 1 times [2023-12-19 21:59:28,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:59:28,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267199572] [2023-12-19 21:59:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:59:28,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:59:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:59:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:59:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 21:59:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:59:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 21:59:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 21:59:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 21:59:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:59:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 21:59:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:59:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:29,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 21:59:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:29,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 21:59:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:29,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 21:59:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:29,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 21:59:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 21:59:29,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:59:29,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267199572] [2023-12-19 21:59:29,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267199572] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:59:29,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158971756] [2023-12-19 21:59:29,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:59:29,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:59:29,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:59:29,007 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 21:59:29,011 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 21:59:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:29,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 21:59:29,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:59:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 21:59:29,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:59:29,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158971756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:59:29,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:59:29,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 12 [2023-12-19 21:59:29,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368140558] [2023-12-19 21:59:29,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:59:29,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 21:59:29,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:59:29,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 21:59:29,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-19 21:59:29,313 INFO L87 Difference]: Start difference. First operand 14841 states and 24954 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 21:59:31,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:59:31,250 INFO L93 Difference]: Finished difference Result 29832 states and 50129 transitions. [2023-12-19 21:59:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 21:59:31,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2023-12-19 21:59:31,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:59:31,311 INFO L225 Difference]: With dead ends: 29832 [2023-12-19 21:59:31,312 INFO L226 Difference]: Without dead ends: 15004 [2023-12-19 21:59:31,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-19 21:59:31,359 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 134 mSDsluCounter, 4512 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5445 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:59:31,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5445 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:59:31,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15004 states. [2023-12-19 21:59:33,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15004 to 14834. [2023-12-19 21:59:33,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14834 states, 11697 states have (on average 1.612721210566812) internal successors, (18864), 11896 states have internal predecessors, (18864), 2424 states have call successors, (2424), 625 states have call predecessors, (2424), 712 states have return successors, (3650), 2378 states have call predecessors, (3650), 2402 states have call successors, (3650) [2023-12-19 21:59:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14834 states to 14834 states and 24938 transitions. [2023-12-19 21:59:33,348 INFO L78 Accepts]: Start accepts. Automaton has 14834 states and 24938 transitions. Word has length 123 [2023-12-19 21:59:33,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:59:33,348 INFO L495 AbstractCegarLoop]: Abstraction has 14834 states and 24938 transitions. [2023-12-19 21:59:33,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 21:59:33,348 INFO L276 IsEmpty]: Start isEmpty. Operand 14834 states and 24938 transitions. [2023-12-19 21:59:33,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-19 21:59:33,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:59:33,352 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:59:33,361 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 21:59:33,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:59:33,559 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:59:33,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:59:33,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1305175206, now seen corresponding path program 1 times [2023-12-19 21:59:33,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:59:33,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017459376] [2023-12-19 21:59:33,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:59:33,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:59:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:33,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:59:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:33,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:59:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:33,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 21:59:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:59:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:33,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 21:59:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:33,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 21:59:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:33,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 21:59:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:33,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:59:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 21:59:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:33,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:59:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:33,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 21:59:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:33,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 21:59:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:33,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 21:59:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:33,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 21:59:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 21:59:33,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:59:33,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017459376] [2023-12-19 21:59:33,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017459376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:59:33,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:59:33,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 21:59:33,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990848751] [2023-12-19 21:59:33,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:59:33,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 21:59:33,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:59:33,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 21:59:33,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 21:59:33,927 INFO L87 Difference]: Start difference. First operand 14834 states and 24938 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 21:59:41,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:59:41,027 INFO L93 Difference]: Finished difference Result 34430 states and 58794 transitions. [2023-12-19 21:59:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 21:59:41,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 124 [2023-12-19 21:59:41,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:59:41,212 INFO L225 Difference]: With dead ends: 34430 [2023-12-19 21:59:41,212 INFO L226 Difference]: Without dead ends: 19601 [2023-12-19 21:59:41,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-19 21:59:41,252 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1034 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 3151 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 3372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 3151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 21:59:41,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 1416 Invalid, 3372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 3151 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 21:59:41,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19601 states. [2023-12-19 21:59:43,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19601 to 14807. [2023-12-19 21:59:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 11673 states have (on average 1.6121819583654589) internal successors, (18819), 11870 states have internal predecessors, (18819), 2423 states have call successors, (2423), 625 states have call predecessors, (2423), 710 states have return successors, (3647), 2377 states have call predecessors, (3647), 2401 states have call successors, (3647) [2023-12-19 21:59:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 24889 transitions. [2023-12-19 21:59:43,167 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 24889 transitions. Word has length 124 [2023-12-19 21:59:43,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:59:43,167 INFO L495 AbstractCegarLoop]: Abstraction has 14807 states and 24889 transitions. [2023-12-19 21:59:43,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 21:59:43,167 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 24889 transitions. [2023-12-19 21:59:43,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-19 21:59:43,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:59:43,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:59:43,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 21:59:43,171 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:59:43,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:59:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1077071505, now seen corresponding path program 1 times [2023-12-19 21:59:43,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:59:43,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201965671] [2023-12-19 21:59:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:59:43,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:59:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:43,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:59:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:43,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:59:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:43,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 21:59:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:43,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:59:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:43,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:59:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:43,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 21:59:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:43,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 21:59:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:43,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:59:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:43,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 21:59:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:43,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:59:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:43,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 21:59:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:43,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 21:59:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 21:59:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:43,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 21:59:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 21:59:43,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:59:43,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201965671] [2023-12-19 21:59:43,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201965671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:59:43,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:59:43,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 21:59:43,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707562886] [2023-12-19 21:59:43,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:59:43,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 21:59:43,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:59:43,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 21:59:43,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-19 21:59:43,707 INFO L87 Difference]: Start difference. First operand 14807 states and 24889 transitions. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 21:59:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:59:59,038 INFO L93 Difference]: Finished difference Result 46256 states and 86558 transitions. [2023-12-19 21:59:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-19 21:59:59,039 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2023-12-19 21:59:59,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:59:59,214 INFO L225 Difference]: With dead ends: 46256 [2023-12-19 21:59:59,214 INFO L226 Difference]: Without dead ends: 31530 [2023-12-19 21:59:59,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 21:59:59,313 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 4799 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 7941 mSolverCounterSat, 1339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4882 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 9280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1339 IncrementalHoareTripleChecker+Valid, 7941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-19 21:59:59,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4882 Valid, 3396 Invalid, 9280 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1339 Valid, 7941 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-19 21:59:59,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31530 states. [2023-12-19 22:00:02,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31530 to 24113. [2023-12-19 22:00:02,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24113 states, 18924 states have (on average 1.5880891989008665) internal successors, (30053), 19261 states have internal predecessors, (30053), 3906 states have call successors, (3906), 1008 states have call predecessors, (3906), 1282 states have return successors, (7854), 3975 states have call predecessors, (7854), 3875 states have call successors, (7854) [2023-12-19 22:00:02,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24113 states to 24113 states and 41813 transitions. [2023-12-19 22:00:02,925 INFO L78 Accepts]: Start accepts. Automaton has 24113 states and 41813 transitions. Word has length 125 [2023-12-19 22:00:02,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:02,926 INFO L495 AbstractCegarLoop]: Abstraction has 24113 states and 41813 transitions. [2023-12-19 22:00:02,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:00:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 24113 states and 41813 transitions. [2023-12-19 22:00:02,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-19 22:00:02,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:02,930 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:00:02,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 22:00:02,930 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:02,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:02,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1886545535, now seen corresponding path program 1 times [2023-12-19 22:00:02,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:02,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115590815] [2023-12-19 22:00:02,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:02,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:00:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:00:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:00:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:00:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:00:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:00:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 22:00:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 22:00:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:00:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 22:00:03,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:03,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115590815] [2023-12-19 22:00:03,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115590815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:03,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:00:03,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 22:00:03,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911203682] [2023-12-19 22:00:03,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:03,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 22:00:03,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:03,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 22:00:03,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:00:03,372 INFO L87 Difference]: Start difference. First operand 24113 states and 41813 transitions. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:00:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:22,918 INFO L93 Difference]: Finished difference Result 79793 states and 164249 transitions. [2023-12-19 22:00:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-19 22:00:22,918 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 127 [2023-12-19 22:00:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:23,314 INFO L225 Difference]: With dead ends: 79793 [2023-12-19 22:00:23,315 INFO L226 Difference]: Without dead ends: 55761 [2023-12-19 22:00:23,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2023-12-19 22:00:23,531 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 2676 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 7296 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2767 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 8056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 7296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:23,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2767 Valid, 3541 Invalid, 8056 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [760 Valid, 7296 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-19 22:00:23,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55761 states. [2023-12-19 22:00:29,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55761 to 42428. [2023-12-19 22:00:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42428 states, 33246 states have (on average 1.5767611141189917) internal successors, (52421), 33779 states have internal predecessors, (52421), 6905 states have call successors, (6905), 1774 states have call predecessors, (6905), 2276 states have return successors, (18280), 7138 states have call predecessors, (18280), 6856 states have call successors, (18280) [2023-12-19 22:00:30,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42428 states to 42428 states and 77606 transitions. [2023-12-19 22:00:30,334 INFO L78 Accepts]: Start accepts. Automaton has 42428 states and 77606 transitions. Word has length 127 [2023-12-19 22:00:30,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:30,334 INFO L495 AbstractCegarLoop]: Abstraction has 42428 states and 77606 transitions. [2023-12-19 22:00:30,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:00:30,334 INFO L276 IsEmpty]: Start isEmpty. Operand 42428 states and 77606 transitions. [2023-12-19 22:00:30,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-19 22:00:30,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:30,338 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:00:30,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 22:00:30,339 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:30,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:30,339 INFO L85 PathProgramCache]: Analyzing trace with hash -755914801, now seen corresponding path program 1 times [2023-12-19 22:00:30,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:30,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534022639] [2023-12-19 22:00:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:30,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:30,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:30,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:30,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:00:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:30,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:30,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:30,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:00:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:30,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:00:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:30,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:30,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:00:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:30,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:00:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:30,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:00:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:30,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:00:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:30,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 22:00:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:30,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-19 22:00:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 22:00:30,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:30,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534022639] [2023-12-19 22:00:30,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534022639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:30,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:00:30,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 22:00:30,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274078089] [2023-12-19 22:00:30,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:30,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:00:30,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:30,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:00:30,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:00:30,806 INFO L87 Difference]: Start difference. First operand 42428 states and 77606 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:00:57,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:57,752 INFO L93 Difference]: Finished difference Result 144284 states and 336299 transitions. [2023-12-19 22:00:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 22:00:57,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 128 [2023-12-19 22:00:57,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:58,844 INFO L225 Difference]: With dead ends: 144284 [2023-12-19 22:00:58,844 INFO L226 Difference]: Without dead ends: 101937 [2023-12-19 22:00:59,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:00:59,485 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 2713 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 4357 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2806 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 5115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 4357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:59,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2806 Valid, 2157 Invalid, 5115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 4357 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-19 22:00:59,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101937 states. [2023-12-19 22:01:12,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101937 to 78584. [2023-12-19 22:01:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78584 states, 61677 states have (on average 1.5685101415438494) internal successors, (96741), 62656 states have internal predecessors, (96741), 12705 states have call successors, (12705), 3306 states have call predecessors, (12705), 4201 states have return successors, (44936), 13149 states have call predecessors, (44936), 12620 states have call successors, (44936) [2023-12-19 22:01:13,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78584 states to 78584 states and 154382 transitions. [2023-12-19 22:01:13,796 INFO L78 Accepts]: Start accepts. Automaton has 78584 states and 154382 transitions. Word has length 128 [2023-12-19 22:01:13,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:13,796 INFO L495 AbstractCegarLoop]: Abstraction has 78584 states and 154382 transitions. [2023-12-19 22:01:13,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:01:13,797 INFO L276 IsEmpty]: Start isEmpty. Operand 78584 states and 154382 transitions. [2023-12-19 22:01:13,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-19 22:01:13,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:13,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:13,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 22:01:13,801 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:13,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:13,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1454563832, now seen corresponding path program 1 times [2023-12-19 22:01:13,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:13,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042772498] [2023-12-19 22:01:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:13,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:14,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:14,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:01:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:14,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:14,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:14,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:01:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:14,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:01:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:14,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:14,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:01:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:14,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:14,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:01:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:14,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 22:01:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:14,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 22:01:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:14,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 22:01:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 22:01:14,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:14,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042772498] [2023-12-19 22:01:14,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042772498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:14,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:01:14,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 22:01:14,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430166272] [2023-12-19 22:01:14,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:14,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 22:01:14,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:14,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 22:01:14,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:01:14,315 INFO L87 Difference]: Start difference. First operand 78584 states and 154382 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:01:45,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:45,350 INFO L93 Difference]: Finished difference Result 176136 states and 378853 transitions. [2023-12-19 22:01:45,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-19 22:01:45,351 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 130 [2023-12-19 22:01:45,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:46,317 INFO L225 Difference]: With dead ends: 176136 [2023-12-19 22:01:46,318 INFO L226 Difference]: Without dead ends: 102726 [2023-12-19 22:01:47,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2023-12-19 22:01:47,023 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 4739 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 7314 mSolverCounterSat, 1334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4838 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 8648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1334 IncrementalHoareTripleChecker+Valid, 7314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:47,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4838 Valid, 3026 Invalid, 8648 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1334 Valid, 7314 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-19 22:01:47,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102726 states. [2023-12-19 22:01:59,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102726 to 78544. [2023-12-19 22:02:00,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78544 states, 61662 states have (on average 1.5684051766079594) internal successors, (96711), 62601 states have internal predecessors, (96711), 12695 states have call successors, (12695), 3306 states have call predecessors, (12695), 4186 states have return successors, (44745), 13164 states have call predecessors, (44745), 12610 states have call successors, (44745) [2023-12-19 22:02:01,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78544 states to 78544 states and 154151 transitions. [2023-12-19 22:02:01,398 INFO L78 Accepts]: Start accepts. Automaton has 78544 states and 154151 transitions. Word has length 130 [2023-12-19 22:02:01,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:01,398 INFO L495 AbstractCegarLoop]: Abstraction has 78544 states and 154151 transitions. [2023-12-19 22:02:01,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:02:01,399 INFO L276 IsEmpty]: Start isEmpty. Operand 78544 states and 154151 transitions. [2023-12-19 22:02:01,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 22:02:01,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:01,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:02:01,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 22:02:01,404 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:01,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash 406088399, now seen corresponding path program 1 times [2023-12-19 22:02:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:01,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091100826] [2023-12-19 22:02:01,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:01,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:02:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:02:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:02:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 22:02:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:02:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:02:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-19 22:02:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 22:02:01,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:01,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091100826] [2023-12-19 22:02:01,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091100826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:01,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:02:01,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:02:01,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549058513] [2023-12-19 22:02:01,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:01,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:02:01,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:01,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:02:01,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:02:01,885 INFO L87 Difference]: Start difference. First operand 78544 states and 154151 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:02:29,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:29,380 INFO L93 Difference]: Finished difference Result 180131 states and 406636 transitions. [2023-12-19 22:02:29,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:02:29,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2023-12-19 22:02:29,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:30,348 INFO L225 Difference]: With dead ends: 180131 [2023-12-19 22:02:30,348 INFO L226 Difference]: Without dead ends: 102237 [2023-12-19 22:02:31,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:02:31,602 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 1014 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 3457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:31,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 1468 Invalid, 3457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 3233 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 22:02:31,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102237 states. [2023-12-19 22:02:45,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102237 to 79308. [2023-12-19 22:02:45,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79308 states, 62211 states have (on average 1.5607689958367492) internal successors, (97097), 63150 states have internal predecessors, (97097), 12695 states have call successors, (12695), 3521 states have call predecessors, (12695), 4401 states have return successors, (44884), 13164 states have call predecessors, (44884), 12610 states have call successors, (44884)