/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_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 21:58:21,573 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 21:58:21,657 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 21:58:21,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 21:58:21,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 21:58:21,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 21:58:21,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 21:58:21,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 21:58:21,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 21:58:21,702 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 21:58:21,702 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 21:58:21,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 21:58:21,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 21:58:21,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 21:58:21,705 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 21:58:21,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 21:58:21,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 21:58:21,706 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 21:58:21,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 21:58:21,707 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 21:58:21,708 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 21:58:21,708 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 21:58:21,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 21:58:21,709 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 21:58:21,709 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 21:58:21,709 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 21:58:21,709 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 21:58:21,709 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 21:58:21,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 21:58:21,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 21:58:21,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 21:58:21,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 21:58:21,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 21:58:21,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 21:58:21,712 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 21:58:21,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 21:58:21,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 21:58:21,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 21:58:21,713 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 21:58:21,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 21:58:21,713 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 21:58:21,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 21:58:21,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 21:58:21,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 21:58:21,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 21:58:21,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 21:58:21,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 21:58:21,999 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 21:58:22,000 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 21:58:22,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2023-12-19 21:58:23,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 21:58:23,576 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 21:58:23,577 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2023-12-19 21:58:23,613 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e955215f/8d98b60015644fe08c5f100a1d4ff2d1/FLAG924272b45 [2023-12-19 21:58:23,627 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e955215f/8d98b60015644fe08c5f100a1d4ff2d1 [2023-12-19 21:58:23,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 21:58:23,630 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 21:58:23,631 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 21:58:23,631 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 21:58:23,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 21:58:23,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:58:23" (1/1) ... [2023-12-19 21:58:23,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6993e143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:23, skipping insertion in model container [2023-12-19 21:58:23,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:58:23" (1/1) ... [2023-12-19 21:58:23,729 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 21:58:24,280 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_product21.cil.c[58922,58935] [2023-12-19 21:58:24,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 21:58:24,361 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 21:58:24,370 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2023-12-19 21:58:24,371 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [716] [2023-12-19 21:58:24,371 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [754] [2023-12-19 21:58:24,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [875] [2023-12-19 21:58:24,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1230] [2023-12-19 21:58:24,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2746] [2023-12-19 21:58:24,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2837] [2023-12-19 21:58:24,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2846] [2023-12-19 21:58:24,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [2861] [2023-12-19 21:58:24,374 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2950] [2023-12-19 21:58:24,465 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_product21.cil.c[58922,58935] [2023-12-19 21:58:24,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 21:58:24,508 INFO L206 MainTranslator]: Completed translation [2023-12-19 21:58:24,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:24 WrapperNode [2023-12-19 21:58:24,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 21:58:24,530 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 21:58:24,530 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 21:58:24,530 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 21:58:24,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:24" (1/1) ... [2023-12-19 21:58:24,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:24" (1/1) ... [2023-12-19 21:58:24,601 INFO L138 Inliner]: procedures = 90, calls = 338, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 817 [2023-12-19 21:58:24,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 21:58:24,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 21:58:24,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 21:58:24,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 21:58:24,613 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:24" (1/1) ... [2023-12-19 21:58:24,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:24" (1/1) ... [2023-12-19 21:58:24,618 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:24" (1/1) ... [2023-12-19 21:58:24,657 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-12-19 21:58:24,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:24" (1/1) ... [2023-12-19 21:58:24,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:24" (1/1) ... [2023-12-19 21:58:24,673 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:24" (1/1) ... [2023-12-19 21:58:24,685 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:24" (1/1) ... [2023-12-19 21:58:24,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:24" (1/1) ... [2023-12-19 21:58:24,696 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:24" (1/1) ... [2023-12-19 21:58:24,705 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 21:58:24,706 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 21:58:24,706 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 21:58:24,707 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 21:58:24,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:24" (1/1) ... [2023-12-19 21:58:24,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 21:58:24,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:24,737 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 21:58:24,776 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 21:58:24,792 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-12-19 21:58:24,792 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-12-19 21:58:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 21:58:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-12-19 21:58:24,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-12-19 21:58:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-19 21:58:24,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-19 21:58:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-12-19 21:58:24,793 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-12-19 21:58:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-19 21:58:24,793 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-19 21:58:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-19 21:58:24,794 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-19 21:58:24,794 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-12-19 21:58:24,794 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-12-19 21:58:24,794 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-19 21:58:24,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-19 21:58:24,794 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-19 21:58:24,794 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-19 21:58:24,794 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-19 21:58:24,795 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-19 21:58:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-19 21:58:24,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-19 21:58:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-19 21:58:24,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-19 21:58:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-19 21:58:24,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-19 21:58:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-19 21:58:24,799 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-19 21:58:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-19 21:58:24,800 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-19 21:58:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-19 21:58:24,800 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-19 21:58:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-19 21:58:24,800 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-19 21:58:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-19 21:58:24,801 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-19 21:58:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-19 21:58:24,801 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-19 21:58:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 21:58:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 21:58:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 21:58:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 21:58:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 21:58:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 21:58:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-19 21:58:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-19 21:58:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-19 21:58:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-19 21:58:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-19 21:58:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-19 21:58:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-19 21:58:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-19 21:58:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-19 21:58:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-19 21:58:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-19 21:58:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-19 21:58:24,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-19 21:58:24,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-19 21:58:24,803 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-12-19 21:58:24,803 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-12-19 21:58:24,803 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-19 21:58:24,803 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-19 21:58:24,803 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-19 21:58:24,803 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-19 21:58:24,803 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-19 21:58:24,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-19 21:58:24,804 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-12-19 21:58:24,804 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-12-19 21:58:24,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 21:58:24,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 21:58:24,804 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-19 21:58:24,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-19 21:58:24,991 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 21:58:24,996 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 21:58:26,004 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 21:58:26,060 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 21:58:26,060 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-19 21:58:26,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 09:58:26 BoogieIcfgContainer [2023-12-19 21:58:26,060 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 21:58:26,062 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 21:58:26,063 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 21:58:26,065 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 21:58:26,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 09:58:23" (1/3) ... [2023-12-19 21:58:26,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409c548a 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 21:58:26,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:58:24" (2/3) ... [2023-12-19 21:58:26,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409c548a 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 21:58:26,067 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 21:58:26,068 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2023-12-19 21:58:26,085 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 21:58:26,085 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 21:58:26,137 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 21:58:26,143 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;@a81e9f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 21:58:26,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 21:58:26,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 570 states, 443 states have (on average 1.72686230248307) internal successors, (765), 461 states have internal predecessors, (765), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-19 21:58:26,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 21:58:26,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:26,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:26,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:26,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:26,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1069495149, now seen corresponding path program 1 times [2023-12-19 21:58:26,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:26,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655305317] [2023-12-19 21:58:26,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:26,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:26,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:26,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:26,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 21:58:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 21:58:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 21:58:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 21:58:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 21:58:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 21:58:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 21:58:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 21:58:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 21:58:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 21:58:27,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:27,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655305317] [2023-12-19 21:58:27,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655305317] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:27,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178418805] [2023-12-19 21:58:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:27,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:27,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:27,138 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 21:58:27,149 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 21:58:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:27,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 21:58:27,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 21:58:27,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:27,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178418805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:27,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:27,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2023-12-19 21:58:27,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039871819] [2023-12-19 21:58:27,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:27,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 21:58:27,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:27,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 21:58:27,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 21:58:27,597 INFO L87 Difference]: Start difference. First operand has 570 states, 443 states have (on average 1.72686230248307) internal successors, (765), 461 states have internal predecessors, (765), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:27,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:27,716 INFO L93 Difference]: Finished difference Result 1124 states and 1919 transitions. [2023-12-19 21:58:27,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 21:58:27,719 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-12-19 21:58:27,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:27,739 INFO L225 Difference]: With dead ends: 1124 [2023-12-19 21:58:27,740 INFO L226 Difference]: Without dead ends: 564 [2023-12-19 21:58:27,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 21:58:27,755 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:27,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 937 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:58:27,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-12-19 21:58:27,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2023-12-19 21:58:27,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 440 states have (on average 1.7022727272727274) internal successors, (749), 456 states have internal predecessors, (749), 100 states have call successors, (100), 25 states have call predecessors, (100), 23 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-19 21:58:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 946 transitions. [2023-12-19 21:58:27,847 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 946 transitions. Word has length 103 [2023-12-19 21:58:27,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:27,848 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 946 transitions. [2023-12-19 21:58:27,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:27,849 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 946 transitions. [2023-12-19 21:58:27,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 21:58:27,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:27,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:27,866 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 21:58:28,065 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 21:58:28,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:28,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:28,066 INFO L85 PathProgramCache]: Analyzing trace with hash -428494387, now seen corresponding path program 1 times [2023-12-19 21:58:28,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:28,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616745482] [2023-12-19 21:58:28,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:28,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 21:58:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 21:58:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 21:58:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 21:58:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 21:58:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 21:58:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 21:58:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 21:58:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 21:58:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 21:58:28,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:28,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616745482] [2023-12-19 21:58:28,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616745482] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:28,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18315328] [2023-12-19 21:58:28,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:28,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:28,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:28,559 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 21:58:28,585 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 21:58:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:28,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:58:28,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-19 21:58:28,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:28,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18315328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:28,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:28,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-19 21:58:28,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096798407] [2023-12-19 21:58:28,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:28,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 21:58:28,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:28,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 21:58:28,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 21:58:28,902 INFO L87 Difference]: Start difference. First operand 564 states and 946 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:29,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:29,029 INFO L93 Difference]: Finished difference Result 1657 states and 2819 transitions. [2023-12-19 21:58:29,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 21:58:29,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-12-19 21:58:29,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:29,038 INFO L225 Difference]: With dead ends: 1657 [2023-12-19 21:58:29,038 INFO L226 Difference]: Without dead ends: 1108 [2023-12-19 21:58:29,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 21:58:29,043 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 940 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1851 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 21:58:29,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 1851 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:58:29,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2023-12-19 21:58:29,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1099. [2023-12-19 21:58:29,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 865 states have (on average 1.7098265895953757) internal successors, (1479), 894 states have internal predecessors, (1479), 188 states have call successors, (188), 47 states have call predecessors, (188), 45 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-12-19 21:58:29,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1863 transitions. [2023-12-19 21:58:29,105 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1863 transitions. Word has length 103 [2023-12-19 21:58:29,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:29,106 INFO L495 AbstractCegarLoop]: Abstraction has 1099 states and 1863 transitions. [2023-12-19 21:58:29,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:29,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1863 transitions. [2023-12-19 21:58:29,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 21:58:29,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:29,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:29,127 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 21:58:29,321 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 21:58:29,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:29,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:29,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1130094261, now seen corresponding path program 1 times [2023-12-19 21:58:29,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:29,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132948348] [2023-12-19 21:58:29,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:29,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 21:58:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 21:58:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 21:58:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 21:58:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 21:58:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 21:58:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 21:58:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 21:58:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 21:58:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 21:58:29,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:29,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132948348] [2023-12-19 21:58:29,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132948348] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:29,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143760487] [2023-12-19 21:58:29,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:29,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:29,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:29,730 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 21:58:29,750 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 21:58:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:58:30,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:30,077 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 21:58:30,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:30,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143760487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:30,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:30,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-19 21:58:30,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461321028] [2023-12-19 21:58:30,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:30,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:58:30,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:30,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:58:30,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 21:58:30,080 INFO L87 Difference]: Start difference. First operand 1099 states and 1863 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:30,213 INFO L93 Difference]: Finished difference Result 2204 states and 3739 transitions. [2023-12-19 21:58:30,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 21:58:30,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-12-19 21:58:30,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:30,221 INFO L225 Difference]: With dead ends: 2204 [2023-12-19 21:58:30,221 INFO L226 Difference]: Without dead ends: 1108 [2023-12-19 21:58:30,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-19 21:58:30,228 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 26 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:30,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2739 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2023-12-19 21:58:30,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1108. [2023-12-19 21:58:30,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 873 states have (on average 1.7101947308132874) internal successors, (1493), 902 states have internal predecessors, (1493), 188 states have call successors, (188), 48 states have call predecessors, (188), 46 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-12-19 21:58:30,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1877 transitions. [2023-12-19 21:58:30,295 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1877 transitions. Word has length 103 [2023-12-19 21:58:30,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:30,295 INFO L495 AbstractCegarLoop]: Abstraction has 1108 states and 1877 transitions. [2023-12-19 21:58:30,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:30,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1877 transitions. [2023-12-19 21:58:30,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-19 21:58:30,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:30,304 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:30,316 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 21:58:30,512 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 21:58:30,513 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:30,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:30,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1006973529, now seen corresponding path program 1 times [2023-12-19 21:58:30,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:30,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449195113] [2023-12-19 21:58:30,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:30,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 21:58:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 21:58:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 21:58:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 21:58:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 21:58:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 21:58:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 21:58:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 21:58:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 21:58:30,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:30,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449195113] [2023-12-19 21:58:30,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449195113] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:30,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470874164] [2023-12-19 21:58:30,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:30,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:30,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:30,954 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 21:58:30,971 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 21:58:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:31,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:58:31,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:31,281 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 21:58:31,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:31,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470874164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:31,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:31,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-12-19 21:58:31,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971765039] [2023-12-19 21:58:31,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:31,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:58:31,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:31,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:58:31,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-19 21:58:31,289 INFO L87 Difference]: Start difference. First operand 1108 states and 1877 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:31,541 INFO L93 Difference]: Finished difference Result 2255 states and 3833 transitions. [2023-12-19 21:58:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 21:58:31,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2023-12-19 21:58:31,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:31,556 INFO L225 Difference]: With dead ends: 2255 [2023-12-19 21:58:31,556 INFO L226 Difference]: Without dead ends: 1152 [2023-12-19 21:58:31,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-19 21:58:31,567 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 168 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:31,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2585 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 21:58:31,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2023-12-19 21:58:31,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1152. [2023-12-19 21:58:31,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 916 states have (on average 1.720524017467249) internal successors, (1576), 945 states have internal predecessors, (1576), 188 states have call successors, (188), 49 states have call predecessors, (188), 47 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-12-19 21:58:31,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1960 transitions. [2023-12-19 21:58:31,632 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1960 transitions. Word has length 105 [2023-12-19 21:58:31,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:31,632 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1960 transitions. [2023-12-19 21:58:31,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:31,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1960 transitions. [2023-12-19 21:58:31,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-19 21:58:31,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:31,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:31,649 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 21:58:31,846 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 21:58:31,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:31,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:31,847 INFO L85 PathProgramCache]: Analyzing trace with hash -813048253, now seen corresponding path program 1 times [2023-12-19 21:58:31,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:31,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361730563] [2023-12-19 21:58:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:31,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 21:58:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 21:58:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 21:58:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 21:58:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 21:58:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 21:58:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 21:58:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 21:58:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 21:58:32,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:32,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361730563] [2023-12-19 21:58:32,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361730563] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:32,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896649267] [2023-12-19 21:58:32,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:32,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:32,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:32,304 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 21:58:32,315 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 21:58:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:32,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 21:58:32,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 21:58:32,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:32,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896649267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:32,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:32,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-19 21:58:32,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581342479] [2023-12-19 21:58:32,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:32,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 21:58:32,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:32,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 21:58:32,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-19 21:58:32,693 INFO L87 Difference]: Start difference. First operand 1152 states and 1960 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:32,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:32,922 INFO L93 Difference]: Finished difference Result 2332 states and 3965 transitions. [2023-12-19 21:58:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 21:58:32,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 107 [2023-12-19 21:58:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:32,930 INFO L225 Difference]: With dead ends: 2332 [2023-12-19 21:58:32,930 INFO L226 Difference]: Without dead ends: 1185 [2023-12-19 21:58:32,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-12-19 21:58:32,939 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 113 mSDsluCounter, 4486 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5403 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 21:58:32,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5403 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:32,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2023-12-19 21:58:32,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1164. [2023-12-19 21:58:32,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 925 states have (on average 1.718918918918919) internal successors, (1590), 956 states have internal predecessors, (1590), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2023-12-19 21:58:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1980 transitions. [2023-12-19 21:58:32,981 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1980 transitions. Word has length 107 [2023-12-19 21:58:32,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:32,982 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 1980 transitions. [2023-12-19 21:58:32,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:32,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1980 transitions. [2023-12-19 21:58:32,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 21:58:32,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:32,987 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:32,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 21:58:33,199 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 21:58:33,200 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:33,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:33,200 INFO L85 PathProgramCache]: Analyzing trace with hash -160611478, now seen corresponding path program 1 times [2023-12-19 21:58:33,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:33,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822163161] [2023-12-19 21:58:33,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:33,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 21:58:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 21:58:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 21:58:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 21:58:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 21:58:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 21:58:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 21:58:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 21:58:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,581 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 21:58:33,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:33,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822163161] [2023-12-19 21:58:33,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822163161] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:33,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568640267] [2023-12-19 21:58:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:33,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:33,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:33,583 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 21:58:33,608 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 21:58:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:33,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 21:58:33,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:34,004 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 21:58:34,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:34,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568640267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:34,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:34,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-19 21:58:34,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620807332] [2023-12-19 21:58:34,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:34,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 21:58:34,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:34,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 21:58:34,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-19 21:58:34,006 INFO L87 Difference]: Start difference. First operand 1164 states and 1980 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:34,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:34,186 INFO L93 Difference]: Finished difference Result 2350 states and 3994 transitions. [2023-12-19 21:58:34,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 21:58:34,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 108 [2023-12-19 21:58:34,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:34,196 INFO L225 Difference]: With dead ends: 2350 [2023-12-19 21:58:34,197 INFO L226 Difference]: Without dead ends: 1193 [2023-12-19 21:58:34,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-19 21:58:34,205 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 124 mSDsluCounter, 4474 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5391 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:34,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5391 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2023-12-19 21:58:34,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1164. [2023-12-19 21:58:34,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 925 states have (on average 1.718918918918919) internal successors, (1590), 956 states have internal predecessors, (1590), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2023-12-19 21:58:34,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1980 transitions. [2023-12-19 21:58:34,254 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1980 transitions. Word has length 108 [2023-12-19 21:58:34,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:34,254 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 1980 transitions. [2023-12-19 21:58:34,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:34,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1980 transitions. [2023-12-19 21:58:34,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 21:58:34,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:34,259 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:34,270 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 21:58:34,468 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 21:58:34,468 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:34,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:34,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1218816576, now seen corresponding path program 1 times [2023-12-19 21:58:34,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:34,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839153178] [2023-12-19 21:58:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:34,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 21:58:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 21:58:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 21:58:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 21:58:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 21:58:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 21:58:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 21:58:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 21:58:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 21:58:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:34,741 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-19 21:58:34,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:34,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839153178] [2023-12-19 21:58:34,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839153178] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:34,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117782958] [2023-12-19 21:58:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:34,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:34,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:34,743 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 21:58:34,764 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 21:58:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:58:35,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 21:58:35,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:35,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117782958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:35,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:35,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-19 21:58:35,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747465665] [2023-12-19 21:58:35,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:35,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:58:35,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:35,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:58:35,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 21:58:35,098 INFO L87 Difference]: Start difference. First operand 1164 states and 1980 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:35,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:35,212 INFO L93 Difference]: Finished difference Result 2338 states and 3974 transitions. [2023-12-19 21:58:35,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 21:58:35,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2023-12-19 21:58:35,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:35,220 INFO L225 Difference]: With dead ends: 2338 [2023-12-19 21:58:35,220 INFO L226 Difference]: Without dead ends: 1175 [2023-12-19 21:58:35,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-19 21:58:35,228 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 20 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:35,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2740 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:35,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2023-12-19 21:58:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1173. [2023-12-19 21:58:35,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7095391211146838) internal successors, (1595), 964 states have internal predecessors, (1595), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-12-19 21:58:35,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1984 transitions. [2023-12-19 21:58:35,270 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1984 transitions. Word has length 108 [2023-12-19 21:58:35,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:35,270 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1984 transitions. [2023-12-19 21:58:35,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:35,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1984 transitions. [2023-12-19 21:58:35,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-19 21:58:35,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:35,276 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:35,291 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 21:58:35,484 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 21:58:35,484 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:35,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:35,485 INFO L85 PathProgramCache]: Analyzing trace with hash -486685313, now seen corresponding path program 1 times [2023-12-19 21:58:35,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:35,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633007732] [2023-12-19 21:58:35,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:35,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 21:58:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 21:58:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 21:58:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 21:58:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 21:58:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 21:58:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 21:58:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 21:58:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:35,881 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 21:58:35,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:35,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633007732] [2023-12-19 21:58:35,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633007732] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:35,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906753492] [2023-12-19 21:58:35,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:35,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:35,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:35,883 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 21:58:35,897 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 21:58:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:36,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 21:58:36,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:36,262 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 21:58:36,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:36,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906753492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:36,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:36,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-19 21:58:36,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355922693] [2023-12-19 21:58:36,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:36,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 21:58:36,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:36,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 21:58:36,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-19 21:58:36,264 INFO L87 Difference]: Start difference. First operand 1173 states and 1984 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:36,450 INFO L93 Difference]: Finished difference Result 2359 states and 3989 transitions. [2023-12-19 21:58:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 21:58:36,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2023-12-19 21:58:36,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:36,458 INFO L225 Difference]: With dead ends: 2359 [2023-12-19 21:58:36,458 INFO L226 Difference]: Without dead ends: 1204 [2023-12-19 21:58:36,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-19 21:58:36,465 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 135 mSDsluCounter, 4462 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5379 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:36,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 5379 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:36,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2023-12-19 21:58:36,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1173. [2023-12-19 21:58:36,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7095391211146838) internal successors, (1595), 964 states have internal predecessors, (1595), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-12-19 21:58:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1984 transitions. [2023-12-19 21:58:36,504 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1984 transitions. Word has length 109 [2023-12-19 21:58:36,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:36,504 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1984 transitions. [2023-12-19 21:58:36,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1984 transitions. [2023-12-19 21:58:36,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-19 21:58:36,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:36,509 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:36,523 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 21:58:36,717 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 21:58:36,717 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:36,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:36,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1659098947, now seen corresponding path program 1 times [2023-12-19 21:58:36,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:36,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333607189] [2023-12-19 21:58:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:36,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:36,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 21:58:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 21:58:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 21:58:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 21:58:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 21:58:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 21:58:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 21:58:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 21:58:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,117 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 21:58:37,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:37,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333607189] [2023-12-19 21:58:37,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333607189] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:37,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774461675] [2023-12-19 21:58:37,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:37,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:37,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:37,118 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 21:58:37,168 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 21:58:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:37,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 21:58:37,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:37,533 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 21:58:37,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:37,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774461675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:37,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:37,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-19 21:58:37,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973022822] [2023-12-19 21:58:37,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:37,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 21:58:37,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:37,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 21:58:37,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-19 21:58:37,535 INFO L87 Difference]: Start difference. First operand 1173 states and 1984 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:37,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:37,768 INFO L93 Difference]: Finished difference Result 2361 states and 3992 transitions. [2023-12-19 21:58:37,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 21:58:37,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2023-12-19 21:58:37,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:37,776 INFO L225 Difference]: With dead ends: 2361 [2023-12-19 21:58:37,776 INFO L226 Difference]: Without dead ends: 1206 [2023-12-19 21:58:37,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-19 21:58:37,783 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 131 mSDsluCounter, 5343 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 6249 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 21:58:37,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 6249 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:37,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2023-12-19 21:58:37,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1173. [2023-12-19 21:58:37,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7095391211146838) internal successors, (1595), 964 states have internal predecessors, (1595), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-12-19 21:58:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1984 transitions. [2023-12-19 21:58:37,826 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1984 transitions. Word has length 109 [2023-12-19 21:58:37,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:37,827 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1984 transitions. [2023-12-19 21:58:37,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:37,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1984 transitions. [2023-12-19 21:58:37,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 21:58:37,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:37,832 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:37,841 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 21:58:38,041 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 21:58:38,041 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:38,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:38,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1513483238, now seen corresponding path program 1 times [2023-12-19 21:58:38,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:38,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428908143] [2023-12-19 21:58:38,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:38,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 21:58:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 21:58:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 21:58:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 21:58:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 21:58:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 21:58:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 21:58:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 21:58:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:38,689 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 21:58:38,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:38,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428908143] [2023-12-19 21:58:38,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428908143] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:38,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268653077] [2023-12-19 21:58:38,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:38,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:38,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:38,706 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 21:58:38,735 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 21:58:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:39,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 21:58:39,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:39,247 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 21:58:39,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:39,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268653077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:39,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:39,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-19 21:58:39,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433990113] [2023-12-19 21:58:39,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:39,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 21:58:39,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:39,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 21:58:39,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-19 21:58:39,250 INFO L87 Difference]: Start difference. First operand 1173 states and 1984 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:39,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:39,589 INFO L93 Difference]: Finished difference Result 2361 states and 3992 transitions. [2023-12-19 21:58:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 21:58:39,590 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2023-12-19 21:58:39,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:39,610 INFO L225 Difference]: With dead ends: 2361 [2023-12-19 21:58:39,610 INFO L226 Difference]: Without dead ends: 1206 [2023-12-19 21:58:39,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-19 21:58:39,616 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 141 mSDsluCounter, 5337 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6244 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:39,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6244 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 21:58:39,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2023-12-19 21:58:39,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1173. [2023-12-19 21:58:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7095391211146838) internal successors, (1595), 964 states have internal predecessors, (1595), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-12-19 21:58:39,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1984 transitions. [2023-12-19 21:58:39,689 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1984 transitions. Word has length 110 [2023-12-19 21:58:39,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:39,689 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1984 transitions. [2023-12-19 21:58:39,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:39,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1984 transitions. [2023-12-19 21:58:39,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-19 21:58:39,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:39,693 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:39,735 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 21:58:39,915 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 21:58:39,915 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:39,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:39,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1008032440, now seen corresponding path program 1 times [2023-12-19 21:58:39,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:39,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072561854] [2023-12-19 21:58:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:39,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 21:58:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 21:58:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 21:58:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 21:58:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 21:58:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 21:58:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 21:58:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,449 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 21:58:40,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:40,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072561854] [2023-12-19 21:58:40,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072561854] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:40,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140489387] [2023-12-19 21:58:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:40,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:40,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:40,465 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 21:58:40,500 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 21:58:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:40,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 21:58:40,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:40,996 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 21:58:40,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:40,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140489387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:40,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:40,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-19 21:58:40,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157751403] [2023-12-19 21:58:40,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:40,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 21:58:40,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:40,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 21:58:40,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-19 21:58:40,998 INFO L87 Difference]: Start difference. First operand 1173 states and 1984 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:41,317 INFO L93 Difference]: Finished difference Result 2353 states and 3978 transitions. [2023-12-19 21:58:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 21:58:41,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2023-12-19 21:58:41,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:41,344 INFO L225 Difference]: With dead ends: 2353 [2023-12-19 21:58:41,344 INFO L226 Difference]: Without dead ends: 1198 [2023-12-19 21:58:41,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-19 21:58:41,350 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 151 mSDsluCounter, 5319 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 6225 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:41,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 6225 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 21:58:41,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2023-12-19 21:58:41,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1173. [2023-12-19 21:58:41,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7095391211146838) internal successors, (1595), 964 states have internal predecessors, (1595), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-12-19 21:58:41,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1984 transitions. [2023-12-19 21:58:41,414 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1984 transitions. Word has length 111 [2023-12-19 21:58:41,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:41,414 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1984 transitions. [2023-12-19 21:58:41,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:41,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1984 transitions. [2023-12-19 21:58:41,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-19 21:58:41,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:41,425 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:41,440 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 21:58:41,633 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 21:58:41,634 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:41,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:41,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1766035226, now seen corresponding path program 1 times [2023-12-19 21:58:41,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:41,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510800223] [2023-12-19 21:58:41,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:41,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:58:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:41,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 21:58:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 21:58:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 21:58:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 21:58:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 21:58:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 21:58:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 21:58:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 21:58:42,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:42,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510800223] [2023-12-19 21:58:42,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510800223] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:42,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861665993] [2023-12-19 21:58:42,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:42,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:42,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:42,054 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 21:58:42,127 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 21:58:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:42,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:58:42,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 21:58:42,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:42,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861665993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:42,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:42,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-19 21:58:42,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142855117] [2023-12-19 21:58:42,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:42,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:58:42,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:42,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:58:42,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 21:58:42,562 INFO L87 Difference]: Start difference. First operand 1173 states and 1984 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:42,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:42,732 INFO L93 Difference]: Finished difference Result 2317 states and 3925 transitions. [2023-12-19 21:58:42,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 21:58:42,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2023-12-19 21:58:42,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:42,743 INFO L225 Difference]: With dead ends: 2317 [2023-12-19 21:58:42,743 INFO L226 Difference]: Without dead ends: 1173 [2023-12-19 21:58:42,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-19 21:58:42,760 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 35 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:42,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2738 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:42,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2023-12-19 21:58:42,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2023-12-19 21:58:42,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7041800643086817) internal successors, (1590), 964 states have internal predecessors, (1590), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-12-19 21:58:42,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1979 transitions. [2023-12-19 21:58:42,819 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1979 transitions. Word has length 111 [2023-12-19 21:58:42,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:42,820 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1979 transitions. [2023-12-19 21:58:42,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:42,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1979 transitions. [2023-12-19 21:58:42,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-19 21:58:42,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:42,825 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:42,835 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 21:58:43,033 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 21:58:43,034 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:43,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:43,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1736644033, now seen corresponding path program 1 times [2023-12-19 21:58:43,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:43,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801421758] [2023-12-19 21:58:43,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:43,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 21:58:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 21:58:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 21:58:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 21:58:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 21:58:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 21:58:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 21:58:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,361 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 21:58:43,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:43,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801421758] [2023-12-19 21:58:43,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801421758] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:43,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908132157] [2023-12-19 21:58:43,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:43,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:43,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:43,363 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 21:58:43,381 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 21:58:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:43,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:58:43,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:43,666 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 21:58:43,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:43,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908132157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:43,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:43,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-12-19 21:58:43,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639563720] [2023-12-19 21:58:43,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:43,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:58:43,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:58:43,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-19 21:58:43,668 INFO L87 Difference]: Start difference. First operand 1173 states and 1979 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:43,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:43,855 INFO L93 Difference]: Finished difference Result 2313 states and 3916 transitions. [2023-12-19 21:58:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 21:58:43,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2023-12-19 21:58:43,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:43,863 INFO L225 Difference]: With dead ends: 2313 [2023-12-19 21:58:43,864 INFO L226 Difference]: Without dead ends: 1225 [2023-12-19 21:58:43,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-19 21:58:43,870 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 239 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:43,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2574 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:43,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-12-19 21:58:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1217. [2023-12-19 21:58:43,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 976 states have (on average 1.714139344262295) internal successors, (1673), 1007 states have internal predecessors, (1673), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-12-19 21:58:43,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 2061 transitions. [2023-12-19 21:58:43,935 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 2061 transitions. Word has length 112 [2023-12-19 21:58:43,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:43,935 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 2061 transitions. [2023-12-19 21:58:43,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:43,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 2061 transitions. [2023-12-19 21:58:43,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-19 21:58:43,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:43,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:43,949 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 21:58:44,149 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 21:58:44,149 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:44,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:44,150 INFO L85 PathProgramCache]: Analyzing trace with hash 2000035450, now seen corresponding path program 1 times [2023-12-19 21:58:44,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:44,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835872933] [2023-12-19 21:58:44,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:44,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 21:58:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 21:58:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 21:58:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 21:58:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 21:58:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 21:58:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 21:58:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,504 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 21:58:44,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:44,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835872933] [2023-12-19 21:58:44,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835872933] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:44,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418420945] [2023-12-19 21:58:44,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:44,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:44,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:44,506 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 21:58:44,520 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 21:58:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:44,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 21:58:44,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:44,884 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 21:58:44,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:44,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418420945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:44,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:44,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2023-12-19 21:58:44,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960217672] [2023-12-19 21:58:44,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:44,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 21:58:44,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:44,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 21:58:44,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2023-12-19 21:58:44,887 INFO L87 Difference]: Start difference. First operand 1217 states and 2061 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:45,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:45,083 INFO L93 Difference]: Finished difference Result 2347 states and 3965 transitions. [2023-12-19 21:58:45,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 21:58:45,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2023-12-19 21:58:45,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:45,092 INFO L225 Difference]: With dead ends: 2347 [2023-12-19 21:58:45,093 INFO L226 Difference]: Without dead ends: 1259 [2023-12-19 21:58:45,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-12-19 21:58:45,102 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 113 mSDsluCounter, 4482 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5398 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 21:58:45,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5398 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:45,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2023-12-19 21:58:45,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1229. [2023-12-19 21:58:45,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 985 states have (on average 1.7126903553299493) internal successors, (1687), 1018 states have internal predecessors, (1687), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-12-19 21:58:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2079 transitions. [2023-12-19 21:58:45,165 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2079 transitions. Word has length 113 [2023-12-19 21:58:45,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:45,166 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2079 transitions. [2023-12-19 21:58:45,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:45,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2079 transitions. [2023-12-19 21:58:45,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 21:58:45,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:45,172 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:45,183 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 21:58:45,380 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 21:58:45,381 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:45,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:45,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1050717819, now seen corresponding path program 1 times [2023-12-19 21:58:45,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:45,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899931214] [2023-12-19 21:58:45,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:45,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 21:58:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 21:58:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 21:58:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 21:58:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 21:58:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 21:58:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 21:58:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:45,743 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 21:58:45,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:45,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899931214] [2023-12-19 21:58:45,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899931214] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:45,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81053019] [2023-12-19 21:58:45,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:45,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:45,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:45,745 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 21:58:45,749 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 21:58:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:46,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 21:58:46,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:46,089 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 21:58:46,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:46,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81053019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:46,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:46,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-19 21:58:46,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591791034] [2023-12-19 21:58:46,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:46,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 21:58:46,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:46,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 21:58:46,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-12-19 21:58:46,092 INFO L87 Difference]: Start difference. First operand 1229 states and 2079 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:46,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:46,273 INFO L93 Difference]: Finished difference Result 2355 states and 3978 transitions. [2023-12-19 21:58:46,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 21:58:46,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2023-12-19 21:58:46,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:46,281 INFO L225 Difference]: With dead ends: 2355 [2023-12-19 21:58:46,282 INFO L226 Difference]: Without dead ends: 1267 [2023-12-19 21:58:46,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-12-19 21:58:46,287 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 124 mSDsluCounter, 4470 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5386 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 21:58:46,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5386 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2023-12-19 21:58:46,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1229. [2023-12-19 21:58:46,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 985 states have (on average 1.7126903553299493) internal successors, (1687), 1018 states have internal predecessors, (1687), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-12-19 21:58:46,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2079 transitions. [2023-12-19 21:58:46,329 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2079 transitions. Word has length 114 [2023-12-19 21:58:46,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:46,329 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2079 transitions. [2023-12-19 21:58:46,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:46,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2079 transitions. [2023-12-19 21:58:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 21:58:46,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:46,333 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:46,344 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 21:58:46,544 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 21:58:46,544 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:46,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:46,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1948668411, now seen corresponding path program 1 times [2023-12-19 21:58:46,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:46,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844931644] [2023-12-19 21:58:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:46,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:46,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:46,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:46,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:46,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:46,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:46,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 21:58:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:46,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 21:58:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:46,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 21:58:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:46,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:46,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 21:58:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:46,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 21:58:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:46,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 21:58:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:46,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 21:58:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:46,876 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 21:58:46,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:46,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844931644] [2023-12-19 21:58:46,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844931644] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:46,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980971705] [2023-12-19 21:58:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:46,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:46,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:46,878 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 21:58:46,900 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 21:58:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:47,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 21:58:47,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 21:58:47,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:47,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980971705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:47,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:47,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-12-19 21:58:47,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142383041] [2023-12-19 21:58:47,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:47,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 21:58:47,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:47,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 21:58:47,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-12-19 21:58:47,284 INFO L87 Difference]: Start difference. First operand 1229 states and 2079 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:47,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:47,543 INFO L93 Difference]: Finished difference Result 2357 states and 3980 transitions. [2023-12-19 21:58:47,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 21:58:47,544 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2023-12-19 21:58:47,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:47,551 INFO L225 Difference]: With dead ends: 2357 [2023-12-19 21:58:47,551 INFO L226 Difference]: Without dead ends: 1269 [2023-12-19 21:58:47,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-12-19 21:58:47,557 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 132 mSDsluCounter, 5344 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6250 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:47,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6250 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 21:58:47,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2023-12-19 21:58:47,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1229. [2023-12-19 21:58:47,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 985 states have (on average 1.7126903553299493) internal successors, (1687), 1018 states have internal predecessors, (1687), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-12-19 21:58:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2079 transitions. [2023-12-19 21:58:47,597 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2079 transitions. Word has length 114 [2023-12-19 21:58:47,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:47,598 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2079 transitions. [2023-12-19 21:58:47,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:47,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2079 transitions. [2023-12-19 21:58:47,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 21:58:47,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:47,602 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:47,615 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 21:58:47,810 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 21:58:47,810 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:47,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:47,811 INFO L85 PathProgramCache]: Analyzing trace with hash -578634277, now seen corresponding path program 1 times [2023-12-19 21:58:47,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:47,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013367678] [2023-12-19 21:58:47,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:47,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:47,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:47,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 21:58:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 21:58:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 21:58:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 21:58:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 21:58:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 21:58:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 21:58:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 21:58:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,056 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 21:58:48,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:48,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013367678] [2023-12-19 21:58:48,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013367678] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:48,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330970033] [2023-12-19 21:58:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:48,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:48,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:48,058 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 21:58:48,085 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 21:58:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:58:48,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:48,348 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 21:58:48,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:48,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330970033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:48,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:48,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-19 21:58:48,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429483575] [2023-12-19 21:58:48,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:48,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:58:48,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:48,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:58:48,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 21:58:48,350 INFO L87 Difference]: Start difference. First operand 1229 states and 2079 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:48,449 INFO L93 Difference]: Finished difference Result 2389 states and 4044 transitions. [2023-12-19 21:58:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 21:58:48,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2023-12-19 21:58:48,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:48,456 INFO L225 Difference]: With dead ends: 2389 [2023-12-19 21:58:48,456 INFO L226 Difference]: Without dead ends: 1229 [2023-12-19 21:58:48,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-19 21:58:48,461 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 10 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:48,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2740 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:48,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2023-12-19 21:58:48,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2023-12-19 21:58:48,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 985 states have (on average 1.7096446700507615) internal successors, (1684), 1018 states have internal predecessors, (1684), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-12-19 21:58:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2076 transitions. [2023-12-19 21:58:48,523 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2076 transitions. Word has length 114 [2023-12-19 21:58:48,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:48,523 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2076 transitions. [2023-12-19 21:58:48,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:48,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2076 transitions. [2023-12-19 21:58:48,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 21:58:48,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:48,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:48,542 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 21:58:48,737 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 21:58:48,738 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:48,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:48,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1436783228, now seen corresponding path program 1 times [2023-12-19 21:58:48,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:48,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89589215] [2023-12-19 21:58:48,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:48,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 21:58:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 21:58:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 21:58:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 21:58:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 21:58:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 21:58:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 21:58:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,071 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 21:58:49,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:49,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89589215] [2023-12-19 21:58:49,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89589215] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:49,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268898742] [2023-12-19 21:58:49,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:49,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:49,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:49,077 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 21:58:49,100 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 21:58:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:49,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 21:58:49,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:49,534 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 21:58:49,535 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:49,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268898742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:49,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:49,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-12-19 21:58:49,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302218986] [2023-12-19 21:58:49,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:49,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 21:58:49,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:49,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 21:58:49,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-12-19 21:58:49,536 INFO L87 Difference]: Start difference. First operand 1229 states and 2076 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:49,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:49,765 INFO L93 Difference]: Finished difference Result 2349 states and 3964 transitions. [2023-12-19 21:58:49,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 21:58:49,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2023-12-19 21:58:49,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:49,773 INFO L225 Difference]: With dead ends: 2349 [2023-12-19 21:58:49,773 INFO L226 Difference]: Without dead ends: 1261 [2023-12-19 21:58:49,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-12-19 21:58:49,778 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 142 mSDsluCounter, 5317 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 6220 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:49,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 6220 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:49,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2023-12-19 21:58:49,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1229. [2023-12-19 21:58:49,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 985 states have (on average 1.7096446700507615) internal successors, (1684), 1018 states have internal predecessors, (1684), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-12-19 21:58:49,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2076 transitions. [2023-12-19 21:58:49,818 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2076 transitions. Word has length 115 [2023-12-19 21:58:49,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:49,818 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2076 transitions. [2023-12-19 21:58:49,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:49,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2076 transitions. [2023-12-19 21:58:49,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 21:58:49,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:49,823 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:49,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-19 21:58:50,030 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 21:58:50,030 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:50,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:50,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1471037462, now seen corresponding path program 1 times [2023-12-19 21:58:50,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:50,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806871116] [2023-12-19 21:58:50,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:50,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 21:58:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 21:58:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 21:58:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 21:58:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 21:58:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 21:58:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 21:58:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 21:58:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 21:58:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,343 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 21:58:50,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:50,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806871116] [2023-12-19 21:58:50,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806871116] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:50,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864883169] [2023-12-19 21:58:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:50,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:50,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:50,345 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 21:58:50,347 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 21:58:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:50,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 21:58:50,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:50,606 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 21:58:50,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:50,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864883169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:50,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:50,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 11 [2023-12-19 21:58:50,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695189265] [2023-12-19 21:58:50,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:50,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:58:50,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:50,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:58:50,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-19 21:58:50,608 INFO L87 Difference]: Start difference. First operand 1229 states and 2076 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:50,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:50,718 INFO L93 Difference]: Finished difference Result 2440 states and 4133 transitions. [2023-12-19 21:58:50,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 21:58:50,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2023-12-19 21:58:50,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:50,725 INFO L225 Difference]: With dead ends: 2440 [2023-12-19 21:58:50,726 INFO L226 Difference]: Without dead ends: 1195 [2023-12-19 21:58:50,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-19 21:58:50,731 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 13 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:50,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2739 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:50,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2023-12-19 21:58:50,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1195. [2023-12-19 21:58:50,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 954 states have (on average 1.6960167714884695) internal successors, (1618), 985 states have internal predecessors, (1618), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-12-19 21:58:50,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2006 transitions. [2023-12-19 21:58:50,772 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2006 transitions. Word has length 116 [2023-12-19 21:58:50,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:50,772 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 2006 transitions. [2023-12-19 21:58:50,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:58:50,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2006 transitions. [2023-12-19 21:58:50,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 21:58:50,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:50,777 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:50,788 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 21:58:50,985 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 21:58:50,986 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:50,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:50,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1695159395, now seen corresponding path program 1 times [2023-12-19 21:58:50,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:50,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560803827] [2023-12-19 21:58:50,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:50,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 21:58:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 21:58:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 21:58:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 21:58:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 21:58:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 21:58:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 21:58:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 21:58:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,344 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 21:58:51,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:51,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560803827] [2023-12-19 21:58:51,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560803827] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 21:58:51,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066115993] [2023-12-19 21:58:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:51,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:58:51,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:58:51,346 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 21:58:51,352 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 21:58:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:51,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 21:58:51,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:58:51,649 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 21:58:51,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:58:51,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066115993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:51,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:58:51,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2023-12-19 21:58:51,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784905083] [2023-12-19 21:58:51,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:51,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 21:58:51,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:51,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 21:58:51,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-19 21:58:51,651 INFO L87 Difference]: Start difference. First operand 1195 states and 2006 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:51,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:51,811 INFO L93 Difference]: Finished difference Result 2396 states and 4020 transitions. [2023-12-19 21:58:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 21:58:51,812 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2023-12-19 21:58:51,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:51,829 INFO L225 Difference]: With dead ends: 2396 [2023-12-19 21:58:51,829 INFO L226 Difference]: Without dead ends: 1214 [2023-12-19 21:58:51,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-19 21:58:51,834 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 134 mSDsluCounter, 4466 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5390 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:51,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5390 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:58:51,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2023-12-19 21:58:51,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1188. [2023-12-19 21:58:51,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 947 states have (on average 1.6916578669482576) internal successors, (1602), 978 states have internal predecessors, (1602), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-12-19 21:58:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1990 transitions. [2023-12-19 21:58:51,881 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1990 transitions. Word has length 117 [2023-12-19 21:58:51,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:51,881 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1990 transitions. [2023-12-19 21:58:51,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:51,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1990 transitions. [2023-12-19 21:58:51,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-19 21:58:51,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:51,885 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:51,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-19 21:58:52,093 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 21:58:52,094 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:52,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:52,094 INFO L85 PathProgramCache]: Analyzing trace with hash 26278668, now seen corresponding path program 1 times [2023-12-19 21:58:52,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:52,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813771087] [2023-12-19 21:58:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:52,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 21:58:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 21:58:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 21:58:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 21:58:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 21:58:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 21:58:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 21:58:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 21:58:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 21:58:52,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:52,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813771087] [2023-12-19 21:58:52,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813771087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:52,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:58:52,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 21:58:52,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289230315] [2023-12-19 21:58:52,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:52,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 21:58:52,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:52,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 21:58:52,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 21:58:52,470 INFO L87 Difference]: Start difference. First operand 1188 states and 1990 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:58:58,231 INFO L93 Difference]: Finished difference Result 2775 states and 4687 transitions. [2023-12-19 21:58:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 21:58:58,232 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 118 [2023-12-19 21:58:58,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:58:58,241 INFO L225 Difference]: With dead ends: 2775 [2023-12-19 21:58:58,241 INFO L226 Difference]: Without dead ends: 1683 [2023-12-19 21:58:58,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-19 21:58:58,246 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1536 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 5045 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 5460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 5045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 21:58:58,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 2360 Invalid, 5460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [415 Valid, 5045 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 21:58:58,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2023-12-19 21:58:58,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1248. [2023-12-19 21:58:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 993 states have (on average 1.6827794561933536) internal successors, (1671), 1024 states have internal predecessors, (1671), 201 states have call successors, (201), 51 states have call predecessors, (201), 53 states have return successors, (220), 196 states have call predecessors, (220), 197 states have call successors, (220) [2023-12-19 21:58:58,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 2092 transitions. [2023-12-19 21:58:58,431 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 2092 transitions. Word has length 118 [2023-12-19 21:58:58,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:58:58,431 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 2092 transitions. [2023-12-19 21:58:58,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 21:58:58,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 2092 transitions. [2023-12-19 21:58:58,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-19 21:58:58,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:58:58,435 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:58:58,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 21:58:58,435 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:58:58,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:58:58,436 INFO L85 PathProgramCache]: Analyzing trace with hash 123181112, now seen corresponding path program 1 times [2023-12-19 21:58:58,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:58:58,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272245477] [2023-12-19 21:58:58,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:58:58,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:58:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:58:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:58,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:58:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:58,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 21:58:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:58,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:58:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:58,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 21:58:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:58,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 21:58:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:58,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 21:58:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:58,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 21:58:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:58,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:58:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:58,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 21:58:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:58,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 21:58:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:58,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 21:58:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:58,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 21:58:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:58:58,725 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 21:58:58,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:58:58,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272245477] [2023-12-19 21:58:58,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272245477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:58:58,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:58:58,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 21:58:58,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646054133] [2023-12-19 21:58:58,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:58:58,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 21:58:58,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:58:58,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 21:58:58,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 21:58:58,727 INFO L87 Difference]: Start difference. First operand 1248 states and 2092 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:59:02,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:59:02,569 INFO L93 Difference]: Finished difference Result 2858 states and 4823 transitions. [2023-12-19 21:59:02,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 21:59:02,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-12-19 21:59:02,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:59:02,577 INFO L225 Difference]: With dead ends: 2858 [2023-12-19 21:59:02,577 INFO L226 Difference]: Without dead ends: 1615 [2023-12-19 21:59:02,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 21:59:02,581 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1439 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 3045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 21:59:02,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1335 Invalid, 3045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 21:59:02,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2023-12-19 21:59:02,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1221. [2023-12-19 21:59:02,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 969 states have (on average 1.6780185758513932) internal successors, (1626), 998 states have internal predecessors, (1626), 200 states have call successors, (200), 51 states have call predecessors, (200), 51 states have return successors, (217), 195 states have call predecessors, (217), 196 states have call successors, (217) [2023-12-19 21:59:02,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 2043 transitions. [2023-12-19 21:59:02,784 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 2043 transitions. Word has length 118 [2023-12-19 21:59:02,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:59:02,784 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 2043 transitions. [2023-12-19 21:59:02,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 21:59:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 2043 transitions. [2023-12-19 21:59:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 21:59:02,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:59:02,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:59:02,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 21:59:02,788 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:59:02,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:59:02,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1357290559, now seen corresponding path program 1 times [2023-12-19 21:59:02,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:59:02,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247826908] [2023-12-19 21:59:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:59:02,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:59:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:02,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:59:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:03,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:59:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 21:59:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:03,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:59:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:03,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:59:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:03,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 21:59:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:03,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 21:59:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:03,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 21:59:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:03,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 21:59:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:03,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 21:59:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:03,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 21:59:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:03,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 21:59:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:03,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 21:59:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:03,072 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 21:59:03,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:59:03,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247826908] [2023-12-19 21:59:03,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247826908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:59:03,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:59:03,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 21:59:03,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685470777] [2023-12-19 21:59:03,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:59:03,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 21:59:03,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:59:03,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 21:59:03,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 21:59:03,074 INFO L87 Difference]: Start difference. First operand 1221 states and 2043 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 21:59:09,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:59:09,820 INFO L93 Difference]: Finished difference Result 4130 states and 7210 transitions. [2023-12-19 21:59:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 21:59:09,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 119 [2023-12-19 21:59:09,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:59:09,834 INFO L225 Difference]: With dead ends: 4130 [2023-12-19 21:59:09,834 INFO L226 Difference]: Without dead ends: 2990 [2023-12-19 21:59:09,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-19 21:59:09,841 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 4334 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 3959 mSolverCounterSat, 1330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4344 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 5289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1330 IncrementalHoareTripleChecker+Valid, 3959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-19 21:59:09,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4344 Valid, 1433 Invalid, 5289 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1330 Valid, 3959 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-19 21:59:09,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2023-12-19 21:59:10,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 2316. [2023-12-19 21:59:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 1835 states have (on average 1.673024523160763) internal successors, (3070), 1891 states have internal predecessors, (3070), 383 states have call successors, (383), 96 states have call predecessors, (383), 97 states have return successors, (443), 376 states have call predecessors, (443), 377 states have call successors, (443) [2023-12-19 21:59:10,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 3896 transitions. [2023-12-19 21:59:10,238 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 3896 transitions. Word has length 119 [2023-12-19 21:59:10,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:59:10,238 INFO L495 AbstractCegarLoop]: Abstraction has 2316 states and 3896 transitions. [2023-12-19 21:59:10,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 21:59:10,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 3896 transitions. [2023-12-19 21:59:10,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-19 21:59:10,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:59:10,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:59:10,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 21:59:10,242 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:59:10,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:59:10,243 INFO L85 PathProgramCache]: Analyzing trace with hash -701163758, now seen corresponding path program 1 times [2023-12-19 21:59:10,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:59:10,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489786426] [2023-12-19 21:59:10,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:59:10,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:59:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:10,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:59:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:10,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:59:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:10,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 21:59:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:59:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:10,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:59:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:10,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 21:59:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 21:59:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:10,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 21:59:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:10,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 21:59:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:10,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 21:59:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:10,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 21:59:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 21:59:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 21:59:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:10,520 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 21:59:10,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:59:10,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489786426] [2023-12-19 21:59:10,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489786426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:59:10,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:59:10,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 21:59:10,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420204344] [2023-12-19 21:59:10,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:59:10,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 21:59:10,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:59:10,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 21:59:10,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 21:59:10,523 INFO L87 Difference]: Start difference. First operand 2316 states and 3896 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 21:59:17,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:59:17,741 INFO L93 Difference]: Finished difference Result 7993 states and 14212 transitions. [2023-12-19 21:59:17,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 21:59:17,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 120 [2023-12-19 21:59:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:59:17,772 INFO L225 Difference]: With dead ends: 7993 [2023-12-19 21:59:17,772 INFO L226 Difference]: Without dead ends: 5758 [2023-12-19 21:59:17,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-19 21:59:17,787 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 4335 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 3999 mSolverCounterSat, 1300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4346 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 5299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1300 IncrementalHoareTripleChecker+Valid, 3999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-19 21:59:17,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4346 Valid, 1519 Invalid, 5299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1300 Valid, 3999 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-19 21:59:17,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5758 states. [2023-12-19 21:59:18,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5758 to 4516. [2023-12-19 21:59:18,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4516 states, 3575 states have (on average 1.666013986013986) internal successors, (5956), 3685 states have internal predecessors, (5956), 751 states have call successors, (751), 186 states have call predecessors, (751), 189 states have return successors, (944), 740 states have call predecessors, (944), 741 states have call successors, (944) [2023-12-19 21:59:18,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 7651 transitions. [2023-12-19 21:59:18,518 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 7651 transitions. Word has length 120 [2023-12-19 21:59:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:59:18,518 INFO L495 AbstractCegarLoop]: Abstraction has 4516 states and 7651 transitions. [2023-12-19 21:59:18,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 21:59:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 7651 transitions. [2023-12-19 21:59:18,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-19 21:59:18,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:59:18,522 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:59:18,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 21:59:18,522 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:59:18,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:59:18,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1874866202, now seen corresponding path program 1 times [2023-12-19 21:59:18,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:59:18,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107741635] [2023-12-19 21:59:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:59:18,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:59:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:18,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:59:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:18,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:59:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:18,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 21:59:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:18,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:59:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:18,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:59:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:18,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 21:59:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:18,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 21:59:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:18,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 21:59:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:18,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 21:59:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:18,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 21:59:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:18,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 21:59:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 21:59:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 21:59:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:18,800 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 21:59:18,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:59:18,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107741635] [2023-12-19 21:59:18,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107741635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:59:18,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:59:18,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 21:59:18,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108519422] [2023-12-19 21:59:18,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:59:18,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 21:59:18,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:59:18,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 21:59:18,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 21:59:18,802 INFO L87 Difference]: Start difference. First operand 4516 states and 7651 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 21:59:27,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:59:27,025 INFO L93 Difference]: Finished difference Result 15763 states and 28913 transitions. [2023-12-19 21:59:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 21:59:27,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 121 [2023-12-19 21:59:27,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:59:27,096 INFO L225 Difference]: With dead ends: 15763 [2023-12-19 21:59:27,096 INFO L226 Difference]: Without dead ends: 11328 [2023-12-19 21:59:27,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-19 21:59:27,127 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 4374 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 4018 mSolverCounterSat, 1311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4386 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 5329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1311 IncrementalHoareTripleChecker+Valid, 4018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-19 21:59:27,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4386 Valid, 1548 Invalid, 5329 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1311 Valid, 4018 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-19 21:59:27,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11328 states. [2023-12-19 21:59:28,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11328 to 8926. [2023-12-19 21:59:28,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8926 states, 7063 states have (on average 1.6579357213648591) internal successors, (11710), 7281 states have internal predecessors, (11710), 1489 states have call successors, (1489), 366 states have call predecessors, (1489), 373 states have return successors, (2091), 1470 states have call predecessors, (2091), 1471 states have call successors, (2091) [2023-12-19 21:59:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8926 states to 8926 states and 15290 transitions. [2023-12-19 21:59:28,715 INFO L78 Accepts]: Start accepts. Automaton has 8926 states and 15290 transitions. Word has length 121 [2023-12-19 21:59:28,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:59:28,715 INFO L495 AbstractCegarLoop]: Abstraction has 8926 states and 15290 transitions. [2023-12-19 21:59:28,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 21:59:28,715 INFO L276 IsEmpty]: Start isEmpty. Operand 8926 states and 15290 transitions. [2023-12-19 21:59:28,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-19 21:59:28,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:59:28,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:59:28,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 21:59:28,720 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:59:28,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:59:28,720 INFO L85 PathProgramCache]: Analyzing trace with hash 356266903, now seen corresponding path program 1 times [2023-12-19 21:59:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:59:28,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25878868] [2023-12-19 21:59:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:59:28,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:59:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:59:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:59:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 21:59:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:59:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:59:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 21:59:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 21:59:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 21:59:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 21:59:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:28,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [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 97 [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 106 [2023-12-19 21:59:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:29,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 21:59:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:29,009 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 21:59:29,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:59:29,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25878868] [2023-12-19 21:59:29,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25878868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:59:29,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:59:29,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 21:59:29,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156751437] [2023-12-19 21:59:29,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:59:29,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 21:59:29,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:59:29,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 21:59:29,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 21:59:29,011 INFO L87 Difference]: Start difference. First operand 8926 states and 15290 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 21:59:39,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:59:39,289 INFO L93 Difference]: Finished difference Result 31347 states and 60460 transitions. [2023-12-19 21:59:39,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 21:59:39,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 122 [2023-12-19 21:59:39,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:59:39,437 INFO L225 Difference]: With dead ends: 31347 [2023-12-19 21:59:39,438 INFO L226 Difference]: Without dead ends: 22502 [2023-12-19 21:59:39,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-19 21:59:39,519 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 4391 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 4041 mSolverCounterSat, 1320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4404 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 5361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1320 IncrementalHoareTripleChecker+Valid, 4041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-19 21:59:39,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4404 Valid, 1616 Invalid, 5361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1320 Valid, 4041 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-19 21:59:39,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22502 states. [2023-12-19 21:59:42,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22502 to 17756. [2023-12-19 21:59:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17756 states, 14047 states have (on average 1.6493201395315726) internal successors, (23168), 14481 states have internal predecessors, (23168), 2967 states have call successors, (2967), 726 states have call predecessors, (2967), 741 states have return successors, (4834), 2932 states have call predecessors, (4834), 2933 states have call successors, (4834) [2023-12-19 21:59:42,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17756 states to 17756 states and 30969 transitions. [2023-12-19 21:59:42,318 INFO L78 Accepts]: Start accepts. Automaton has 17756 states and 30969 transitions. Word has length 122 [2023-12-19 21:59:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:59:42,319 INFO L495 AbstractCegarLoop]: Abstraction has 17756 states and 30969 transitions. [2023-12-19 21:59:42,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 21:59:42,319 INFO L276 IsEmpty]: Start isEmpty. Operand 17756 states and 30969 transitions. [2023-12-19 21:59:42,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 21:59:42,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:59:42,322 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:59:42,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 21:59:42,322 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:59:42,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:59:42,322 INFO L85 PathProgramCache]: Analyzing trace with hash 763119627, now seen corresponding path program 1 times [2023-12-19 21:59:42,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:59:42,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564544615] [2023-12-19 21:59:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:59:42,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:59:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:42,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 21:59:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:42,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:59:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:42,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 21:59:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 21:59:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 21:59:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:42,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 21:59:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:42,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 21:59:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:42,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 21:59:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 21:59:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 21:59:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 21:59:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:42,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 21:59:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:42,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 21:59:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:59:42,581 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 21:59:42,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:59:42,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564544615] [2023-12-19 21:59:42,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564544615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:59:42,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:59:42,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 21:59:42,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726030388] [2023-12-19 21:59:42,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:59:42,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 21:59:42,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:59:42,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 21:59:42,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 21:59:42,583 INFO L87 Difference]: Start difference. First operand 17756 states and 30969 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 21:59:57,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:59:57,646 INFO L93 Difference]: Finished difference Result 62559 states and 130475 transitions. [2023-12-19 21:59:57,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 21:59:57,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2023-12-19 21:59:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:59:57,988 INFO L225 Difference]: With dead ends: 62559 [2023-12-19 21:59:57,988 INFO L226 Difference]: Without dead ends: 44884 [2023-12-19 21:59:58,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-19 21:59:58,210 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 4445 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 4049 mSolverCounterSat, 1331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4459 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 5380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1331 IncrementalHoareTripleChecker+Valid, 4049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-19 21:59:58,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4459 Valid, 1617 Invalid, 5380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1331 Valid, 4049 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-19 21:59:58,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44884 states. [2023-12-19 22:00:03,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44884 to 35426. [2023-12-19 22:00:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35426 states, 28023 states have (on average 1.6404382114691503) internal successors, (45970), 28889 states have internal predecessors, (45970), 5925 states have call successors, (5925), 1446 states have call predecessors, (5925), 1477 states have return successors, (11741), 5858 states have call predecessors, (11741), 5859 states have call successors, (11741) [2023-12-19 22:00:04,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35426 states to 35426 states and 63636 transitions. [2023-12-19 22:00:04,349 INFO L78 Accepts]: Start accepts. Automaton has 35426 states and 63636 transitions. Word has length 123 [2023-12-19 22:00:04,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:04,350 INFO L495 AbstractCegarLoop]: Abstraction has 35426 states and 63636 transitions. [2023-12-19 22:00:04,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 22:00:04,350 INFO L276 IsEmpty]: Start isEmpty. Operand 35426 states and 63636 transitions. [2023-12-19 22:00:04,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 22:00:04,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:04,354 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:00:04,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 22:00:04,354 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:04,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:04,354 INFO L85 PathProgramCache]: Analyzing trace with hash 747600909, now seen corresponding path program 1 times [2023-12-19 22:00:04,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:04,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442303015] [2023-12-19 22:00:04,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:04,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:00:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:00:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:00:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 22:00:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:00:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 22:00:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 22:00:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 22:00:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 22:00:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,809 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 22:00:04,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:04,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442303015] [2023-12-19 22:00:04,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442303015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:04,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:00:04,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 22:00:04,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500866279] [2023-12-19 22:00:04,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:04,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 22:00:04,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:04,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 22:00:04,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:00:04,811 INFO L87 Difference]: Start difference. First operand 35426 states and 63636 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:00:19,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:19,675 INFO L93 Difference]: Finished difference Result 82176 states and 160074 transitions. [2023-12-19 22:00:19,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:00:19,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2023-12-19 22:00:19,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:20,306 INFO L225 Difference]: With dead ends: 82176 [2023-12-19 22:00:20,306 INFO L226 Difference]: Without dead ends: 46862 [2023-12-19 22:00:20,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:00:20,712 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1471 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 6106 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 6106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:20,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 3226 Invalid, 6507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [401 Valid, 6106 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-19 22:00:20,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46862 states. [2023-12-19 22:00:26,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46862 to 35874. [2023-12-19 22:00:26,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35874 states, 28343 states have (on average 1.6332074939138412) internal successors, (46290), 29209 states have internal predecessors, (46290), 5925 states have call successors, (5925), 1446 states have call predecessors, (5925), 1605 states have return successors, (12061), 5986 states have call predecessors, (12061), 5859 states have call successors, (12061) [2023-12-19 22:00:26,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35874 states to 35874 states and 64276 transitions. [2023-12-19 22:00:26,936 INFO L78 Accepts]: Start accepts. Automaton has 35874 states and 64276 transitions. Word has length 123 [2023-12-19 22:00:26,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:26,936 INFO L495 AbstractCegarLoop]: Abstraction has 35874 states and 64276 transitions. [2023-12-19 22:00:26,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:00:26,936 INFO L276 IsEmpty]: Start isEmpty. Operand 35874 states and 64276 transitions. [2023-12-19 22:00:26,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-19 22:00:26,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:26,940 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] [2023-12-19 22:00:26,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 22:00:26,940 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:26,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:26,940 INFO L85 PathProgramCache]: Analyzing trace with hash -455761288, now seen corresponding path program 1 times [2023-12-19 22:00:26,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:26,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563156236] [2023-12-19 22:00:26,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:26,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:00:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:00:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:00:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 22:00:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 22:00:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:00:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 22:00:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 22:00:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,262 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 22:00:27,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563156236] [2023-12-19 22:00:27,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563156236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:27,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:00:27,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:00:27,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621413074] [2023-12-19 22:00:27,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:27,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:00:27,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:27,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:00:27,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:00:27,265 INFO L87 Difference]: Start difference. First operand 35874 states and 64276 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:00:40,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:40,669 INFO L93 Difference]: Finished difference Result 81206 states and 156756 transitions. [2023-12-19 22:00:40,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:00:40,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2023-12-19 22:00:40,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:40,935 INFO L225 Difference]: With dead ends: 81206 [2023-12-19 22:00:40,936 INFO L226 Difference]: Without dead ends: 45444 [2023-12-19 22:00:41,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:00:41,169 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 1451 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 2709 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 2709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:41,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1344 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 2709 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:00:41,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45444 states. [2023-12-19 22:00:46,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45444 to 35870. [2023-12-19 22:00:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35870 states, 28341 states have (on average 1.633181609682086) internal successors, (46286), 29207 states have internal predecessors, (46286), 5923 states have call successors, (5923), 1446 states have call predecessors, (5923), 1605 states have return successors, (12057), 5984 states have call predecessors, (12057), 5857 states have call successors, (12057) [2023-12-19 22:00:47,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35870 states to 35870 states and 64266 transitions. [2023-12-19 22:00:47,050 INFO L78 Accepts]: Start accepts. Automaton has 35870 states and 64266 transitions. Word has length 124 [2023-12-19 22:00:47,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:47,050 INFO L495 AbstractCegarLoop]: Abstraction has 35870 states and 64266 transitions. [2023-12-19 22:00:47,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:00:47,050 INFO L276 IsEmpty]: Start isEmpty. Operand 35870 states and 64266 transitions. [2023-12-19 22:00:47,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-19 22:00:47,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:47,054 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] [2023-12-19 22:00:47,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 22:00:47,054 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:47,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:47,054 INFO L85 PathProgramCache]: Analyzing trace with hash -691185384, now seen corresponding path program 1 times [2023-12-19 22:00:47,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:47,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60674897] [2023-12-19 22:00:47,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:47,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:47,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:47,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:47,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:00:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:47,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:47,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:47,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:00:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:47,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:00:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:47,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 22:00:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:47,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:47,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 22:00:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:47,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:00:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:47,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 22:00:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:47,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 22:00:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:47,395 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 22:00:47,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:47,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60674897] [2023-12-19 22:00:47,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60674897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:47,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:00:47,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:00:47,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264211988] [2023-12-19 22:00:47,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:47,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:00:47,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:47,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:00:47,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:00:47,398 INFO L87 Difference]: Start difference. First operand 35870 states and 64266 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:01:02,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:02,535 INFO L93 Difference]: Finished difference Result 82936 states and 161078 transitions. [2023-12-19 22:01:02,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 22:01:02,536 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2023-12-19 22:01:02,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:02,809 INFO L225 Difference]: With dead ends: 82936 [2023-12-19 22:01:02,809 INFO L226 Difference]: Without dead ends: 47178 [2023-12-19 22:01:03,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:01:03,049 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 1445 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 5326 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 5714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 5326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:03,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 2822 Invalid, 5714 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [388 Valid, 5326 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-19 22:01:03,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47178 states. [2023-12-19 22:01:08,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47178 to 35934. [2023-12-19 22:01:08,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35934 states, 28405 states have (on average 1.6317549727160712) internal successors, (46350), 29207 states have internal predecessors, (46350), 5923 states have call successors, (5923), 1446 states have call predecessors, (5923), 1605 states have return successors, (12057), 6048 states have call predecessors, (12057), 5857 states have call successors, (12057) [2023-12-19 22:01:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35934 states to 35934 states and 64330 transitions. [2023-12-19 22:01:09,228 INFO L78 Accepts]: Start accepts. Automaton has 35934 states and 64330 transitions. Word has length 124 [2023-12-19 22:01:09,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:09,229 INFO L495 AbstractCegarLoop]: Abstraction has 35934 states and 64330 transitions. [2023-12-19 22:01:09,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:01:09,229 INFO L276 IsEmpty]: Start isEmpty. Operand 35934 states and 64330 transitions. [2023-12-19 22:01:09,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-19 22:01:09,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:09,233 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] [2023-12-19 22:01:09,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 22:01:09,234 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:09,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:09,234 INFO L85 PathProgramCache]: Analyzing trace with hash -386352742, now seen corresponding path program 1 times [2023-12-19 22:01:09,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:09,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575790759] [2023-12-19 22:01:09,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:09,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:09,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:09,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:09,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:01:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:09,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:09,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:09,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:01:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:09,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:01:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 22:01:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:09,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:09,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:01:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:09,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 22:01:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:09,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 22:01:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:09,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 22:01:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:09,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 22:01:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:09,518 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 22:01:09,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:09,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575790759] [2023-12-19 22:01:09,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575790759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:09,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:01:09,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:01:09,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601947449] [2023-12-19 22:01:09,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:09,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:01:09,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:09,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:01:09,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:01:09,520 INFO L87 Difference]: Start difference. First operand 35934 states and 64330 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-19 22:01:42,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:42,293 INFO L93 Difference]: Finished difference Result 145605 states and 287620 transitions. [2023-12-19 22:01:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 22:01:42,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 133 [2023-12-19 22:01:42,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:43,229 INFO L225 Difference]: With dead ends: 145605 [2023-12-19 22:01:43,229 INFO L226 Difference]: Without dead ends: 109783 [2023-12-19 22:01:43,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:01:43,594 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 4965 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 4149 mSolverCounterSat, 1396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5028 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 5545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1396 IncrementalHoareTripleChecker+Valid, 4149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:43,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5028 Valid, 1861 Invalid, 5545 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1396 Valid, 4149 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-19 22:01:43,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109783 states. [2023-12-19 22:01:57,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109783 to 87159. [2023-12-19 22:01:58,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87159 states, 68661 states have (on average 1.6135360685105082) internal successors, (110787), 70648 states have internal predecessors, (110787), 14332 states have call successors, (14332), 3782 states have call predecessors, (14332), 4165 states have return successors, (28899), 14648 states have call predecessors, (28899), 14170 states have call successors, (28899) [2023-12-19 22:01:59,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87159 states to 87159 states and 154018 transitions. [2023-12-19 22:01:59,893 INFO L78 Accepts]: Start accepts. Automaton has 87159 states and 154018 transitions. Word has length 133 [2023-12-19 22:01:59,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:59,893 INFO L495 AbstractCegarLoop]: Abstraction has 87159 states and 154018 transitions. [2023-12-19 22:01:59,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-19 22:01:59,894 INFO L276 IsEmpty]: Start isEmpty. Operand 87159 states and 154018 transitions. [2023-12-19 22:01:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 22:01:59,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:59,898 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] [2023-12-19 22:01:59,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 22:01:59,899 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:59,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:59,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2060715437, now seen corresponding path program 1 times [2023-12-19 22:01:59,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:59,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476748663] [2023-12-19 22:01:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:59,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:02:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 22:02:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:02:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:02:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:02:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 22:02:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 22:02:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-19 22:02:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,251 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 22:02:00,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:00,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476748663] [2023-12-19 22:02:00,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476748663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:00,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:02:00,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:02:00,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382946900] [2023-12-19 22:02:00,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:00,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:02:00,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:00,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:02:00,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:02:00,253 INFO L87 Difference]: Start difference. First operand 87159 states and 154018 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15)