/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 22:28:38,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 22:28:38,442 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 22:28:38,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 22:28:38,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 22:28:38,474 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 22:28:38,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 22:28:38,475 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 22:28:38,476 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 22:28:38,479 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 22:28:38,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 22:28:38,479 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 22:28:38,480 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 22:28:38,480 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 22:28:38,480 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 22:28:38,480 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 22:28:38,480 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 22:28:38,481 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 22:28:38,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 22:28:38,481 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 22:28:38,481 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 22:28:38,483 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 22:28:38,483 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 22:28:38,483 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 22:28:38,484 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 22:28:38,484 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 22:28:38,484 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 22:28:38,484 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 22:28:38,484 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 22:28:38,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 22:28:38,485 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 22:28:38,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 22:28:38,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:28:38,486 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 22:28:38,486 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 22:28:38,486 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 22:28:38,486 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 22:28:38,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 22:28:38,486 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 22:28:38,487 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 22:28:38,487 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 22:28:38,487 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 22:28:38,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 22:28:38,487 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 22:28:38,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 22:28:38,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 22:28:38,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 22:28:38,700 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 22:28:38,702 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 22:28:38,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product21.cil.c [2023-12-19 22:28:39,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 22:28:40,038 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 22:28:40,039 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product21.cil.c [2023-12-19 22:28:40,064 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e020afa1/89f10b055ad145f280fa79355491bafc/FLAGded952278 [2023-12-19 22:28:40,074 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e020afa1/89f10b055ad145f280fa79355491bafc [2023-12-19 22:28:40,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 22:28:40,077 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 22:28:40,079 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 22:28:40,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 22:28:40,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 22:28:40,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:28:40" (1/1) ... [2023-12-19 22:28:40,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e9942fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:40, skipping insertion in model container [2023-12-19 22:28:40,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:28:40" (1/1) ... [2023-12-19 22:28:40,135 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 22:28:40,469 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product21.cil.c[40071,40084] [2023-12-19 22:28:40,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:28:40,557 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 22:28:40,563 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2023-12-19 22:28:40,564 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [86] [2023-12-19 22:28:40,564 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [452] [2023-12-19 22:28:40,564 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1120] [2023-12-19 22:28:40,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1220] [2023-12-19 22:28:40,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1574] [2023-12-19 22:28:40,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1586] [2023-12-19 22:28:40,566 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [1706] [2023-12-19 22:28:40,566 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1890] [2023-12-19 22:28:40,566 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1899] [2023-12-19 22:28:40,620 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product21.cil.c[40071,40084] [2023-12-19 22:28:40,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:28:40,676 INFO L206 MainTranslator]: Completed translation [2023-12-19 22:28:40,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:40 WrapperNode [2023-12-19 22:28:40,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 22:28:40,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 22:28:40,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 22:28:40,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 22:28:40,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:40" (1/1) ... [2023-12-19 22:28:40,712 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:40" (1/1) ... [2023-12-19 22:28:40,757 INFO L138 Inliner]: procedures = 92, calls = 339, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 860 [2023-12-19 22:28:40,758 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 22:28:40,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 22:28:40,758 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 22:28:40,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 22:28:40,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:40" (1/1) ... [2023-12-19 22:28:40,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:40" (1/1) ... [2023-12-19 22:28:40,786 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:40" (1/1) ... [2023-12-19 22:28:40,824 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-12-19 22:28:40,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:40" (1/1) ... [2023-12-19 22:28:40,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:40" (1/1) ... [2023-12-19 22:28:40,836 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:40" (1/1) ... [2023-12-19 22:28:40,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:40" (1/1) ... [2023-12-19 22:28:40,848 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:40" (1/1) ... [2023-12-19 22:28:40,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:40" (1/1) ... [2023-12-19 22:28:40,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 22:28:40,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 22:28:40,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 22:28:40,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 22:28:40,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:40" (1/1) ... [2023-12-19 22:28:40,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:28:40,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:28:40,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 22:28:40,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 22:28:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 22:28:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-19 22:28:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-19 22:28:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-12-19 22:28:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-12-19 22:28:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-19 22:28:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-19 22:28:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-19 22:28:40,925 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-19 22:28:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-19 22:28:40,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-19 22:28:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-19 22:28:40,925 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-19 22:28:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-19 22:28:40,925 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-19 22:28:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-12-19 22:28:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-12-19 22:28:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-19 22:28:40,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-19 22:28:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-19 22:28:40,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-19 22:28:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-19 22:28:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-19 22:28:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-19 22:28:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-19 22:28:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-12-19 22:28:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-12-19 22:28:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-19 22:28:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-19 22:28:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-19 22:28:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-19 22:28:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-19 22:28:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-19 22:28:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-19 22:28:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-19 22:28:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-19 22:28:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-19 22:28:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 22:28:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 22:28:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 22:28:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 22:28:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 22:28:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 22:28:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-19 22:28:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-19 22:28:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-19 22:28:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-19 22:28:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-19 22:28:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-19 22:28:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-19 22:28:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-19 22:28:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-19 22:28:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-19 22:28:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-19 22:28:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-19 22:28:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-19 22:28:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-19 22:28:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-12-19 22:28:40,931 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-12-19 22:28:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-19 22:28:40,931 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-19 22:28:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-19 22:28:40,931 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-19 22:28:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-19 22:28:40,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-19 22:28:40,933 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-12-19 22:28:40,933 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-12-19 22:28:40,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 22:28:40,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 22:28:40,933 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-19 22:28:40,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-19 22:28:41,104 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 22:28:41,106 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 22:28:41,865 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 22:28:41,933 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 22:28:41,933 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 22:28:41,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:28:41 BoogieIcfgContainer [2023-12-19 22:28:41,934 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 22:28:41,936 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 22:28:41,936 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 22:28:41,944 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 22:28:41,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 10:28:40" (1/3) ... [2023-12-19 22:28:41,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56414baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:28:41, skipping insertion in model container [2023-12-19 22:28:41,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:40" (2/3) ... [2023-12-19 22:28:41,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56414baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:28:41, skipping insertion in model container [2023-12-19 22:28:41,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:28:41" (3/3) ... [2023-12-19 22:28:41,947 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product21.cil.c [2023-12-19 22:28:41,959 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 22:28:41,960 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 22:28:42,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 22:28:42,026 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;@746eb1c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 22:28:42,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 22:28:42,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 542 states, 421 states have (on average 1.7292161520190024) internal successors, (728), 442 states have internal predecessors, (728), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-19 22:28:42,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-19 22:28:42,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:28:42,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:28:42,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:28:42,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:28:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1538400726, now seen corresponding path program 1 times [2023-12-19 22:28:42,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:28:42,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066619259] [2023-12-19 22:28:42,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:42,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:28:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:42,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:42,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:42,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:28:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:42,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:28:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:42,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:28:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:43,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:28:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:43,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:28:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:43,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:28:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:28:43,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:28:43,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066619259] [2023-12-19 22:28:43,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066619259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:28:43,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:28:43,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:28:43,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137503679] [2023-12-19 22:28:43,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:28:43,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:28:43,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:28:43,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:28:43,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:28:43,051 INFO L87 Difference]: Start difference. First operand has 542 states, 421 states have (on average 1.7292161520190024) internal successors, (728), 442 states have internal predecessors, (728), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:28:47,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:28:47,842 INFO L93 Difference]: Finished difference Result 1320 states and 2268 transitions. [2023-12-19 22:28:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:28:47,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 79 [2023-12-19 22:28:47,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:28:47,866 INFO L225 Difference]: With dead ends: 1320 [2023-12-19 22:28:47,868 INFO L226 Difference]: Without dead ends: 787 [2023-12-19 22:28:47,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:28:47,879 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 965 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 3025 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 3232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:28:47,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 1712 Invalid, 3232 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [207 Valid, 3025 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-19 22:28:47,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2023-12-19 22:28:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 538. [2023-12-19 22:28:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 419 states have (on average 1.7183770883054892) internal successors, (720), 438 states have internal predecessors, (720), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-19 22:28:48,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 905 transitions. [2023-12-19 22:28:48,016 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 905 transitions. Word has length 79 [2023-12-19 22:28:48,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:28:48,016 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 905 transitions. [2023-12-19 22:28:48,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:28:48,016 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 905 transitions. [2023-12-19 22:28:48,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 22:28:48,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:28:48,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:28:48,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 22:28:48,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:28:48,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:28:48,021 INFO L85 PathProgramCache]: Analyzing trace with hash 464240010, now seen corresponding path program 1 times [2023-12-19 22:28:48,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:28:48,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291196171] [2023-12-19 22:28:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:48,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:28:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:48,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:48,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:48,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:28:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:48,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:28:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:48,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:48,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:48,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:28:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:48,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:28:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:48,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:28:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:48,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:28:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:28:48,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:28:48,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291196171] [2023-12-19 22:28:48,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291196171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:28:48,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:28:48,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:28:48,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091004802] [2023-12-19 22:28:48,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:28:48,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:28:48,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:28:48,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:28:48,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:28:48,564 INFO L87 Difference]: Start difference. First operand 538 states and 905 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:28:52,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:28:52,468 INFO L93 Difference]: Finished difference Result 1313 states and 2237 transitions. [2023-12-19 22:28:52,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:28:52,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 81 [2023-12-19 22:28:52,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:28:52,477 INFO L225 Difference]: With dead ends: 1313 [2023-12-19 22:28:52,477 INFO L226 Difference]: Without dead ends: 787 [2023-12-19 22:28:52,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:28:52,481 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1848 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 3268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:28:52,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 1607 Invalid, 3268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 2767 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:28:52,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2023-12-19 22:28:52,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 538. [2023-12-19 22:28:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 419 states have (on average 1.7159904534606205) internal successors, (719), 438 states have internal predecessors, (719), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-19 22:28:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 904 transitions. [2023-12-19 22:28:52,570 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 904 transitions. Word has length 81 [2023-12-19 22:28:52,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:28:52,570 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 904 transitions. [2023-12-19 22:28:52,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:28:52,570 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 904 transitions. [2023-12-19 22:28:52,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 22:28:52,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:28:52,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:28:52,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 22:28:52,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:28:52,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:28:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1282449535, now seen corresponding path program 1 times [2023-12-19 22:28:52,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:28:52,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011917221] [2023-12-19 22:28:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:52,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:28:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:52,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:52,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:52,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:28:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:53,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:28:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:53,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:53,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:53,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:28:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:53,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:28:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:53,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:28:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:53,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:28:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:28:53,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:28:53,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011917221] [2023-12-19 22:28:53,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011917221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:28:53,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:28:53,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:28:53,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061023604] [2023-12-19 22:28:53,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:28:53,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:28:53,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:28:53,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:28:53,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:28:53,126 INFO L87 Difference]: Start difference. First operand 538 states and 904 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:28:57,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:28:57,424 INFO L93 Difference]: Finished difference Result 1313 states and 2236 transitions. [2023-12-19 22:28:57,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:28:57,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 82 [2023-12-19 22:28:57,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:28:57,429 INFO L225 Difference]: With dead ends: 1313 [2023-12-19 22:28:57,429 INFO L226 Difference]: Without dead ends: 787 [2023-12-19 22:28:57,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:28:57,431 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 961 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 3006 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 3211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 3006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:28:57,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 1715 Invalid, 3211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 3006 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 22:28:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2023-12-19 22:28:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 538. [2023-12-19 22:28:57,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 419 states have (on average 1.7136038186157518) internal successors, (718), 438 states have internal predecessors, (718), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-19 22:28:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 903 transitions. [2023-12-19 22:28:57,498 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 903 transitions. Word has length 82 [2023-12-19 22:28:57,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:28:57,498 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 903 transitions. [2023-12-19 22:28:57,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:28:57,498 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 903 transitions. [2023-12-19 22:28:57,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 22:28:57,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:28:57,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:28:57,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 22:28:57,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:28:57,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:28:57,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2115772186, now seen corresponding path program 1 times [2023-12-19 22:28:57,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:28:57,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740564269] [2023-12-19 22:28:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:57,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:28:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:57,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:57,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 22:28:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:58,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:28:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:58,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:58,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:58,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:28:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:58,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:28:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:58,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:28:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:58,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:28:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:28:58,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:28:58,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740564269] [2023-12-19 22:28:58,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740564269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:28:58,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:28:58,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:28:58,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638096929] [2023-12-19 22:28:58,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:28:58,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:28:58,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:28:58,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:28:58,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:28:58,119 INFO L87 Difference]: Start difference. First operand 538 states and 903 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:29:02,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:02,514 INFO L93 Difference]: Finished difference Result 1313 states and 2235 transitions. [2023-12-19 22:29:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:29:02,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2023-12-19 22:29:02,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:02,518 INFO L225 Difference]: With dead ends: 1313 [2023-12-19 22:29:02,518 INFO L226 Difference]: Without dead ends: 787 [2023-12-19 22:29:02,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:29:02,521 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 958 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 2991 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 3200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:02,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 1695 Invalid, 3200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2991 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 22:29:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2023-12-19 22:29:02,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 538. [2023-12-19 22:29:02,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 419 states have (on average 1.7112171837708832) internal successors, (717), 438 states have internal predecessors, (717), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-19 22:29:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 902 transitions. [2023-12-19 22:29:02,584 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 902 transitions. Word has length 83 [2023-12-19 22:29:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:02,585 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 902 transitions. [2023-12-19 22:29:02,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:29:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 902 transitions. [2023-12-19 22:29:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-19 22:29:02,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:02,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:02,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 22:29:02,587 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:02,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:02,587 INFO L85 PathProgramCache]: Analyzing trace with hash -404524899, now seen corresponding path program 1 times [2023-12-19 22:29:02,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:02,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645830974] [2023-12-19 22:29:02,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:02,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:02,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:29:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:29:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:03,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:03,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:03,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:29:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:03,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:29:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:03,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:29:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:03,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:29:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:03,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:03,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:03,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645830974] [2023-12-19 22:29:03,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645830974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:03,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:03,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:29:03,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065916173] [2023-12-19 22:29:03,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:03,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:29:03,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:03,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:29:03,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:29:03,137 INFO L87 Difference]: Start difference. First operand 538 states and 902 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:29:07,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:07,563 INFO L93 Difference]: Finished difference Result 1313 states and 2234 transitions. [2023-12-19 22:29:07,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:29:07,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2023-12-19 22:29:07,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:07,567 INFO L225 Difference]: With dead ends: 1313 [2023-12-19 22:29:07,567 INFO L226 Difference]: Without dead ends: 787 [2023-12-19 22:29:07,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:29:07,570 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 955 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 2982 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 3192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:07,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1698 Invalid, 3192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2982 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 22:29:07,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2023-12-19 22:29:07,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 538. [2023-12-19 22:29:07,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 419 states have (on average 1.7088305489260143) internal successors, (716), 438 states have internal predecessors, (716), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-19 22:29:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 901 transitions. [2023-12-19 22:29:07,659 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 901 transitions. Word has length 84 [2023-12-19 22:29:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:07,660 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 901 transitions. [2023-12-19 22:29:07,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:29:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 901 transitions. [2023-12-19 22:29:07,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-19 22:29:07,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:07,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:07,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 22:29:07,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:07,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:07,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1415988158, now seen corresponding path program 1 times [2023-12-19 22:29:07,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:07,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109615741] [2023-12-19 22:29:07,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:07,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:07,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:07,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:08,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:29:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:08,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:08,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:08,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:29:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:08,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:29:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:08,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:29:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:08,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:29:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:08,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:08,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109615741] [2023-12-19 22:29:08,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109615741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:08,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:08,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 22:29:08,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629645031] [2023-12-19 22:29:08,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:08,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 22:29:08,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:08,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 22:29:08,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:29:08,399 INFO L87 Difference]: Start difference. First operand 538 states and 901 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:29:15,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:15,016 INFO L93 Difference]: Finished difference Result 1312 states and 2235 transitions. [2023-12-19 22:29:15,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 22:29:15,022 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2023-12-19 22:29:15,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:15,026 INFO L225 Difference]: With dead ends: 1312 [2023-12-19 22:29:15,026 INFO L226 Difference]: Without dead ends: 826 [2023-12-19 22:29:15,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2023-12-19 22:29:15,028 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1567 mSDsluCounter, 4166 mSDsCounter, 0 mSdLazyCounter, 7650 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 4656 SdHoareTripleChecker+Invalid, 8056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 7650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:15,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 4656 Invalid, 8056 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [406 Valid, 7650 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-19 22:29:15,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2023-12-19 22:29:15,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 545. [2023-12-19 22:29:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 424 states have (on average 1.6886792452830188) internal successors, (716), 443 states have internal predecessors, (716), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2023-12-19 22:29:15,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 906 transitions. [2023-12-19 22:29:15,113 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 906 transitions. Word has length 85 [2023-12-19 22:29:15,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:15,113 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 906 transitions. [2023-12-19 22:29:15,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:29:15,113 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 906 transitions. [2023-12-19 22:29:15,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 22:29:15,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:15,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:15,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 22:29:15,115 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:15,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:15,116 INFO L85 PathProgramCache]: Analyzing trace with hash 813642905, now seen corresponding path program 1 times [2023-12-19 22:29:15,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:15,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745430916] [2023-12-19 22:29:15,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:15,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:15,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:15,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:15,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:29:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:15,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:15,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:15,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:29:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:15,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:29:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:15,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:29:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:29:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:15,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:15,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745430916] [2023-12-19 22:29:15,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745430916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:15,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:15,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 22:29:15,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789023140] [2023-12-19 22:29:15,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:15,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 22:29:15,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:15,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 22:29:15,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:29:15,713 INFO L87 Difference]: Start difference. First operand 545 states and 906 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:29:21,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:21,099 INFO L93 Difference]: Finished difference Result 1326 states and 2250 transitions. [2023-12-19 22:29:21,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 22:29:21,099 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2023-12-19 22:29:21,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:21,103 INFO L225 Difference]: With dead ends: 1326 [2023-12-19 22:29:21,103 INFO L226 Difference]: Without dead ends: 833 [2023-12-19 22:29:21,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-12-19 22:29:21,108 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1974 mSDsluCounter, 3640 mSDsCounter, 0 mSdLazyCounter, 6750 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2054 SdHoareTripleChecker+Valid, 4133 SdHoareTripleChecker+Invalid, 7285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 6750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:21,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2054 Valid, 4133 Invalid, 7285 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [535 Valid, 6750 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 22:29:21,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-12-19 22:29:21,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 546. [2023-12-19 22:29:21,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 425 states have (on average 1.6752941176470588) internal successors, (712), 443 states have internal predecessors, (712), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 91 states have call predecessors, (95), 90 states have call successors, (95) [2023-12-19 22:29:21,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 902 transitions. [2023-12-19 22:29:21,192 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 902 transitions. Word has length 87 [2023-12-19 22:29:21,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:21,192 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 902 transitions. [2023-12-19 22:29:21,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:29:21,192 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 902 transitions. [2023-12-19 22:29:21,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 22:29:21,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:21,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:21,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 22:29:21,195 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:21,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:21,195 INFO L85 PathProgramCache]: Analyzing trace with hash -477794145, now seen corresponding path program 1 times [2023-12-19 22:29:21,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:21,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689849147] [2023-12-19 22:29:21,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:21,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 22:29:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:29:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:29:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:29:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:29:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:21,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:21,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689849147] [2023-12-19 22:29:21,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689849147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:21,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:21,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:29:21,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331792001] [2023-12-19 22:29:21,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:21,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:29:21,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:21,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:29:21,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:29:21,697 INFO L87 Difference]: Start difference. First operand 546 states and 902 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:29:25,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:25,898 INFO L93 Difference]: Finished difference Result 1308 states and 2219 transitions. [2023-12-19 22:29:25,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:29:25,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2023-12-19 22:29:25,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:25,902 INFO L225 Difference]: With dead ends: 1308 [2023-12-19 22:29:25,902 INFO L226 Difference]: Without dead ends: 814 [2023-12-19 22:29:25,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:29:25,905 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 1511 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 4242 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 4632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 4242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:25,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 2523 Invalid, 4632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 4242 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 22:29:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2023-12-19 22:29:26,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 549. [2023-12-19 22:29:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 428 states have (on average 1.661214953271028) internal successors, (711), 446 states have internal predecessors, (711), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 91 states have call predecessors, (95), 90 states have call successors, (95) [2023-12-19 22:29:26,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 901 transitions. [2023-12-19 22:29:26,010 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 901 transitions. Word has length 88 [2023-12-19 22:29:26,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:26,011 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 901 transitions. [2023-12-19 22:29:26,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:29:26,011 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 901 transitions. [2023-12-19 22:29:26,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 22:29:26,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:26,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:26,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 22:29:26,016 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:26,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:26,016 INFO L85 PathProgramCache]: Analyzing trace with hash 412342826, now seen corresponding path program 1 times [2023-12-19 22:29:26,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:26,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492551882] [2023-12-19 22:29:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:26,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:26,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:26,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:26,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:26,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:29:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:26,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:26,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:26,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:29:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:26,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:29:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:26,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-19 22:29:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:26,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:29:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:26,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:26,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492551882] [2023-12-19 22:29:26,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492551882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:26,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:26,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 22:29:26,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815464430] [2023-12-19 22:29:26,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:26,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 22:29:26,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:26,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 22:29:26,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:29:26,619 INFO L87 Difference]: Start difference. First operand 549 states and 901 transitions. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 22:29:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:36,529 INFO L93 Difference]: Finished difference Result 2510 states and 4433 transitions. [2023-12-19 22:29:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 22:29:36,530 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2023-12-19 22:29:36,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:36,547 INFO L225 Difference]: With dead ends: 2510 [2023-12-19 22:29:36,547 INFO L226 Difference]: Without dead ends: 2013 [2023-12-19 22:29:36,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=260, Invalid=732, Unknown=0, NotChecked=0, Total=992 [2023-12-19 22:29:36,551 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 3098 mSDsluCounter, 3549 mSDsCounter, 0 mSdLazyCounter, 6868 mSolverCounterSat, 966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3185 SdHoareTripleChecker+Valid, 4110 SdHoareTripleChecker+Invalid, 7834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 966 IncrementalHoareTripleChecker+Valid, 6868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:36,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3185 Valid, 4110 Invalid, 7834 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [966 Valid, 6868 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-19 22:29:36,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2023-12-19 22:29:36,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1466. [2023-12-19 22:29:36,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1130 states have (on average 1.6371681415929205) internal successors, (1850), 1174 states have internal predecessors, (1850), 264 states have call successors, (264), 65 states have call predecessors, (264), 71 states have return successors, (325), 262 states have call predecessors, (325), 259 states have call successors, (325) [2023-12-19 22:29:36,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 2439 transitions. [2023-12-19 22:29:36,805 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 2439 transitions. Word has length 92 [2023-12-19 22:29:36,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:36,806 INFO L495 AbstractCegarLoop]: Abstraction has 1466 states and 2439 transitions. [2023-12-19 22:29:36,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 22:29:36,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 2439 transitions. [2023-12-19 22:29:36,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 22:29:36,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:36,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:36,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 22:29:36,808 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:36,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:36,809 INFO L85 PathProgramCache]: Analyzing trace with hash -2086786657, now seen corresponding path program 1 times [2023-12-19 22:29:36,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:36,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792313909] [2023-12-19 22:29:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:36,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:36,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:37,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:37,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:37,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:29:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:37,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:37,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:29:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:37,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:29:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:37,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:29:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:29:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:37,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:37,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:37,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792313909] [2023-12-19 22:29:37,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792313909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:37,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:37,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 22:29:37,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888422778] [2023-12-19 22:29:37,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:37,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 22:29:37,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:37,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 22:29:37,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:29:37,441 INFO L87 Difference]: Start difference. First operand 1466 states and 2439 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:29:43,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:43,714 INFO L93 Difference]: Finished difference Result 3482 states and 5978 transitions. [2023-12-19 22:29:43,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 22:29:43,715 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2023-12-19 22:29:43,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:43,724 INFO L225 Difference]: With dead ends: 3482 [2023-12-19 22:29:43,724 INFO L226 Difference]: Without dead ends: 2074 [2023-12-19 22:29:43,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2023-12-19 22:29:43,729 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1949 mSDsluCounter, 3640 mSDsCounter, 0 mSdLazyCounter, 6613 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 4133 SdHoareTripleChecker+Invalid, 7153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 6613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:43,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2029 Valid, 4133 Invalid, 7153 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [540 Valid, 6613 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 22:29:43,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2023-12-19 22:29:43,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 1471. [2023-12-19 22:29:43,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1135 states have (on average 1.6343612334801763) internal successors, (1855), 1176 states have internal predecessors, (1855), 264 states have call successors, (264), 65 states have call predecessors, (264), 71 states have return successors, (325), 265 states have call predecessors, (325), 259 states have call successors, (325) [2023-12-19 22:29:44,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2444 transitions. [2023-12-19 22:29:44,004 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2444 transitions. Word has length 93 [2023-12-19 22:29:44,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:44,004 INFO L495 AbstractCegarLoop]: Abstraction has 1471 states and 2444 transitions. [2023-12-19 22:29:44,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:29:44,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2444 transitions. [2023-12-19 22:29:44,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 22:29:44,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:44,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:44,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 22:29:44,006 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:44,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:44,007 INFO L85 PathProgramCache]: Analyzing trace with hash -755497212, now seen corresponding path program 1 times [2023-12-19 22:29:44,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:44,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478150988] [2023-12-19 22:29:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:44,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:44,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:44,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:29:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:44,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:44,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:44,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:29:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:44,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:29:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:44,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:29:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:44,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:29:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:44,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:44,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:44,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478150988] [2023-12-19 22:29:44,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478150988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:44,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:44,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:29:44,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931513723] [2023-12-19 22:29:44,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:44,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:29:44,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:44,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:29:44,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:29:44,550 INFO L87 Difference]: Start difference. First operand 1471 states and 2444 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:29:48,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:48,361 INFO L93 Difference]: Finished difference Result 3402 states and 5789 transitions. [2023-12-19 22:29:48,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:29:48,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2023-12-19 22:29:48,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:48,370 INFO L225 Difference]: With dead ends: 3402 [2023-12-19 22:29:48,370 INFO L226 Difference]: Without dead ends: 1983 [2023-12-19 22:29:48,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:29:48,374 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1917 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 2594 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 3104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 2594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:48,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 1599 Invalid, 3104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 2594 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:29:48,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2023-12-19 22:29:48,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1471. [2023-12-19 22:29:48,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1135 states have (on average 1.6299559471365639) internal successors, (1850), 1176 states have internal predecessors, (1850), 264 states have call successors, (264), 65 states have call predecessors, (264), 71 states have return successors, (325), 265 states have call predecessors, (325), 259 states have call successors, (325) [2023-12-19 22:29:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2439 transitions. [2023-12-19 22:29:48,627 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2439 transitions. Word has length 101 [2023-12-19 22:29:48,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:48,628 INFO L495 AbstractCegarLoop]: Abstraction has 1471 states and 2439 transitions. [2023-12-19 22:29:48,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:29:48,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2439 transitions. [2023-12-19 22:29:48,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 22:29:48,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:48,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:48,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 22:29:48,630 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:48,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:48,630 INFO L85 PathProgramCache]: Analyzing trace with hash -978927231, now seen corresponding path program 1 times [2023-12-19 22:29:48,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:48,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828684863] [2023-12-19 22:29:48,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:48,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:48,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:48,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:48,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:49,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:29:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:49,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:49,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:49,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:29:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:49,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:29:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:49,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:49,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:29:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:49,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:29:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:49,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:49,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:49,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828684863] [2023-12-19 22:29:49,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828684863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:49,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:49,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:29:49,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701862479] [2023-12-19 22:29:49,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:49,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:29:49,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:49,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:29:49,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:29:49,144 INFO L87 Difference]: Start difference. First operand 1471 states and 2439 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:29:53,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:53,702 INFO L93 Difference]: Finished difference Result 3411 states and 5796 transitions. [2023-12-19 22:29:53,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:29:53,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2023-12-19 22:29:53,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:53,733 INFO L225 Difference]: With dead ends: 3411 [2023-12-19 22:29:53,733 INFO L226 Difference]: Without dead ends: 2000 [2023-12-19 22:29:53,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:29:53,737 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 1455 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 2733 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 2733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:53,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 1663 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 2733 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:29:53,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2023-12-19 22:29:54,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1474. [2023-12-19 22:29:54,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1138 states have (on average 1.6282952548330405) internal successors, (1853), 1179 states have internal predecessors, (1853), 264 states have call successors, (264), 65 states have call predecessors, (264), 71 states have return successors, (325), 265 states have call predecessors, (325), 259 states have call successors, (325) [2023-12-19 22:29:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2442 transitions. [2023-12-19 22:29:54,090 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2442 transitions. Word has length 101 [2023-12-19 22:29:54,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:54,090 INFO L495 AbstractCegarLoop]: Abstraction has 1474 states and 2442 transitions. [2023-12-19 22:29:54,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:29:54,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2442 transitions. [2023-12-19 22:29:54,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 22:29:54,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:54,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:54,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 22:29:54,093 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:54,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:54,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2033183477, now seen corresponding path program 1 times [2023-12-19 22:29:54,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:54,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793947294] [2023-12-19 22:29:54,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:54,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:29:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:29:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:29:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 22:29:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:29:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:54,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:54,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793947294] [2023-12-19 22:29:54,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793947294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:54,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:54,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 22:29:54,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712401368] [2023-12-19 22:29:54,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:54,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 22:29:54,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:54,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 22:29:54,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:29:54,622 INFO L87 Difference]: Start difference. First operand 1474 states and 2442 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-19 22:29:59,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:59,885 INFO L93 Difference]: Finished difference Result 3418 states and 5805 transitions. [2023-12-19 22:29:59,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 22:29:59,885 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2023-12-19 22:29:59,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:59,895 INFO L225 Difference]: With dead ends: 3418 [2023-12-19 22:29:59,895 INFO L226 Difference]: Without dead ends: 2009 [2023-12-19 22:29:59,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:29:59,899 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1903 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 4988 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1984 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 5491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 4988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:59,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1984 Valid, 2942 Invalid, 5491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 4988 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 22:29:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2023-12-19 22:30:00,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1484. [2023-12-19 22:30:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1145 states have (on average 1.6270742358078603) internal successors, (1863), 1188 states have internal predecessors, (1863), 265 states have call successors, (265), 65 states have call predecessors, (265), 73 states have return successors, (328), 266 states have call predecessors, (328), 260 states have call successors, (328) [2023-12-19 22:30:00,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 2456 transitions. [2023-12-19 22:30:00,190 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 2456 transitions. Word has length 101 [2023-12-19 22:30:00,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:00,190 INFO L495 AbstractCegarLoop]: Abstraction has 1484 states and 2456 transitions. [2023-12-19 22:30:00,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-19 22:30:00,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 2456 transitions. [2023-12-19 22:30:00,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 22:30:00,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:00,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:30:00,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 22:30:00,193 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:00,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:00,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1008439798, now seen corresponding path program 1 times [2023-12-19 22:30:00,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:00,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89753696] [2023-12-19 22:30:00,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:00,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:00,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:00,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:30:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:00,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:30:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:00,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:30:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:00,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:00,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 22:30:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:00,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:30:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:30:00,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:00,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89753696] [2023-12-19 22:30:00,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89753696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:00,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:30:00,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-19 22:30:00,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907661164] [2023-12-19 22:30:00,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:00,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 22:30:00,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:00,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 22:30:00,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:30:00,956 INFO L87 Difference]: Start difference. First operand 1484 states and 2456 transitions. Second operand has 17 states, 16 states have (on average 4.875) internal successors, (78), 13 states have internal predecessors, (78), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-19 22:30:13,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:13,497 INFO L93 Difference]: Finished difference Result 3830 states and 6533 transitions. [2023-12-19 22:30:13,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 22:30:13,497 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.875) internal successors, (78), 13 states have internal predecessors, (78), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 101 [2023-12-19 22:30:13,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:13,510 INFO L225 Difference]: With dead ends: 3830 [2023-12-19 22:30:13,510 INFO L226 Difference]: Without dead ends: 2383 [2023-12-19 22:30:13,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=325, Invalid=1567, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 22:30:13,517 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 5101 mSDsluCounter, 5184 mSDsCounter, 0 mSdLazyCounter, 9752 mSolverCounterSat, 1350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5168 SdHoareTripleChecker+Valid, 5657 SdHoareTripleChecker+Invalid, 11102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1350 IncrementalHoareTripleChecker+Valid, 9752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:13,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5168 Valid, 5657 Invalid, 11102 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1350 Valid, 9752 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-19 22:30:13,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states. [2023-12-19 22:30:13,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 1812. [2023-12-19 22:30:13,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1418 states have (on average 1.6114245416078985) internal successors, (2285), 1465 states have internal predecessors, (2285), 305 states have call successors, (305), 75 states have call predecessors, (305), 88 states have return successors, (389), 307 states have call predecessors, (389), 300 states have call successors, (389) [2023-12-19 22:30:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2979 transitions. [2023-12-19 22:30:13,846 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2979 transitions. Word has length 101 [2023-12-19 22:30:13,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:13,847 INFO L495 AbstractCegarLoop]: Abstraction has 1812 states and 2979 transitions. [2023-12-19 22:30:13,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.875) internal successors, (78), 13 states have internal predecessors, (78), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-19 22:30:13,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2979 transitions. [2023-12-19 22:30:13,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 22:30:13,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:13,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:30:13,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 22:30:13,849 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:13,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:13,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1328231792, now seen corresponding path program 1 times [2023-12-19 22:30:13,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:13,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850155811] [2023-12-19 22:30:13,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:13,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:13,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:14,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:14,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:30:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:14,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:14,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:30:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:14,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:30:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:14,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:14,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:30:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:14,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:30:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:30:14,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:14,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850155811] [2023-12-19 22:30:14,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850155811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:14,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:30:14,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:30:14,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22568330] [2023-12-19 22:30:14,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:14,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:30:14,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:14,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:30:14,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:30:14,315 INFO L87 Difference]: Start difference. First operand 1812 states and 2979 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:30:18,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:18,393 INFO L93 Difference]: Finished difference Result 4143 states and 6948 transitions. [2023-12-19 22:30:18,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:30:18,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2023-12-19 22:30:18,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:18,404 INFO L225 Difference]: With dead ends: 4143 [2023-12-19 22:30:18,404 INFO L226 Difference]: Without dead ends: 2325 [2023-12-19 22:30:18,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:30:18,409 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1809 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 3132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:18,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1889 Valid, 1604 Invalid, 3132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:30:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2023-12-19 22:30:18,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 1794. [2023-12-19 22:30:18,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1403 states have (on average 1.6136849607982893) internal successors, (2264), 1448 states have internal predecessors, (2264), 304 states have call successors, (304), 75 states have call predecessors, (304), 86 states have return successors, (386), 306 states have call predecessors, (386), 299 states have call successors, (386) [2023-12-19 22:30:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2954 transitions. [2023-12-19 22:30:18,734 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2954 transitions. Word has length 102 [2023-12-19 22:30:18,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:18,734 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2954 transitions. [2023-12-19 22:30:18,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:30:18,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2954 transitions. [2023-12-19 22:30:18,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 22:30:18,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:18,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:30:18,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 22:30:18,736 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:18,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:18,736 INFO L85 PathProgramCache]: Analyzing trace with hash 418914278, now seen corresponding path program 1 times [2023-12-19 22:30:18,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:18,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587431776] [2023-12-19 22:30:18,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:18,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:18,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:18,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:19,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-19 22:30:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:19,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:19,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:30:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:19,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:30:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:19,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:19,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:30:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:19,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:30:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:30:19,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:19,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587431776] [2023-12-19 22:30:19,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587431776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:19,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:30:19,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:30:19,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121953855] [2023-12-19 22:30:19,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:19,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:30:19,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:19,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:30:19,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:30:19,248 INFO L87 Difference]: Start difference. First operand 1794 states and 2954 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:30:23,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:23,606 INFO L93 Difference]: Finished difference Result 4077 states and 6862 transitions. [2023-12-19 22:30:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:30:23,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2023-12-19 22:30:23,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:23,632 INFO L225 Difference]: With dead ends: 4077 [2023-12-19 22:30:23,632 INFO L226 Difference]: Without dead ends: 2342 [2023-12-19 22:30:23,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:30:23,641 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 975 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:23,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 1715 Invalid, 3007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 2795 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:30:23,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2023-12-19 22:30:23,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 1799. [2023-12-19 22:30:23,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1408 states have (on average 1.6115056818181819) internal successors, (2269), 1453 states have internal predecessors, (2269), 304 states have call successors, (304), 75 states have call predecessors, (304), 86 states have return successors, (386), 306 states have call predecessors, (386), 299 states have call successors, (386) [2023-12-19 22:30:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 2959 transitions. [2023-12-19 22:30:23,982 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 2959 transitions. Word has length 103 [2023-12-19 22:30:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:23,982 INFO L495 AbstractCegarLoop]: Abstraction has 1799 states and 2959 transitions. [2023-12-19 22:30:23,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:30:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 2959 transitions. [2023-12-19 22:30:23,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 22:30:23,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:23,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:30:23,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 22:30:23,984 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:23,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:23,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1149714939, now seen corresponding path program 1 times [2023-12-19 22:30:23,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:23,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653023791] [2023-12-19 22:30:23,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:23,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:24,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:24,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:24,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:24,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:30:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:24,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:24,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:24,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:30:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:24,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:30:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:24,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:30:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:24,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:30:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:24,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:30:24,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:24,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653023791] [2023-12-19 22:30:24,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653023791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:24,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:30:24,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-19 22:30:24,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448651442] [2023-12-19 22:30:24,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:24,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 22:30:24,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:24,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 22:30:24,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:30:24,775 INFO L87 Difference]: Start difference. First operand 1799 states and 2959 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 12 states have internal predecessors, (81), 7 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-19 22:30:35,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:35,613 INFO L93 Difference]: Finished difference Result 5838 states and 10058 transitions. [2023-12-19 22:30:35,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 22:30:35,614 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 12 states have internal predecessors, (81), 7 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 104 [2023-12-19 22:30:35,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:35,628 INFO L225 Difference]: With dead ends: 5838 [2023-12-19 22:30:35,628 INFO L226 Difference]: Without dead ends: 4111 [2023-12-19 22:30:35,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=448, Invalid=1358, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 22:30:35,633 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 7171 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 6258 mSolverCounterSat, 2352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7171 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 8610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2352 IncrementalHoareTripleChecker+Valid, 6258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:35,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7171 Valid, 2789 Invalid, 8610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2352 Valid, 6258 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-19 22:30:35,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2023-12-19 22:30:36,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 3207. [2023-12-19 22:30:36,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 2514 states have (on average 1.6014319809069213) internal successors, (4026), 2589 states have internal predecessors, (4026), 516 states have call successors, (516), 134 states have call predecessors, (516), 176 states have return successors, (734), 543 states have call predecessors, (734), 511 states have call successors, (734) [2023-12-19 22:30:36,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 5276 transitions. [2023-12-19 22:30:36,248 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 5276 transitions. Word has length 104 [2023-12-19 22:30:36,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:36,249 INFO L495 AbstractCegarLoop]: Abstraction has 3207 states and 5276 transitions. [2023-12-19 22:30:36,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 12 states have internal predecessors, (81), 7 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-19 22:30:36,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 5276 transitions. [2023-12-19 22:30:36,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 22:30:36,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:36,251 INFO L195 NwaCegarLoop]: trace histogram [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 22:30:36,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 22:30:36,251 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:36,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:36,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2126372043, now seen corresponding path program 1 times [2023-12-19 22:30:36,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:36,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068317134] [2023-12-19 22:30:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:36,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:36,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:36,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:36,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:36,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:30:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:36,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:36,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:36,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:30:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:36,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:30:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:36,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:36,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:30:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:36,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:36,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:30:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:30:36,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:36,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068317134] [2023-12-19 22:30:36,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068317134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:36,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:30:36,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:30:36,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885264607] [2023-12-19 22:30:36,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:36,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:30:36,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:36,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:30:36,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:30:36,830 INFO L87 Difference]: Start difference. First operand 3207 states and 5276 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-19 22:30:44,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:44,333 INFO L93 Difference]: Finished difference Result 10050 states and 17074 transitions. [2023-12-19 22:30:44,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 22:30:44,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 108 [2023-12-19 22:30:44,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:44,373 INFO L225 Difference]: With dead ends: 10050 [2023-12-19 22:30:44,373 INFO L226 Difference]: Without dead ends: 6914 [2023-12-19 22:30:44,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2023-12-19 22:30:44,382 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 4206 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 1446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4206 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 4169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1446 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:44,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4206 Valid, 1266 Invalid, 4169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1446 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-19 22:30:44,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6914 states. [2023-12-19 22:30:45,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6914 to 5492. [2023-12-19 22:30:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5492 states, 4336 states have (on average 1.6047047970479704) internal successors, (6958), 4445 states have internal predecessors, (6958), 860 states have call successors, (860), 221 states have call predecessors, (860), 295 states have return successors, (1205), 921 states have call predecessors, (1205), 855 states have call successors, (1205) [2023-12-19 22:30:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5492 states to 5492 states and 9023 transitions. [2023-12-19 22:30:45,522 INFO L78 Accepts]: Start accepts. Automaton has 5492 states and 9023 transitions. Word has length 108 [2023-12-19 22:30:45,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:45,522 INFO L495 AbstractCegarLoop]: Abstraction has 5492 states and 9023 transitions. [2023-12-19 22:30:45,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-19 22:30:45,522 INFO L276 IsEmpty]: Start isEmpty. Operand 5492 states and 9023 transitions. [2023-12-19 22:30:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 22:30:45,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:45,524 INFO L195 NwaCegarLoop]: trace histogram [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 22:30:45,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 22:30:45,524 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:45,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:45,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1992358537, now seen corresponding path program 1 times [2023-12-19 22:30:45,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:45,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906961363] [2023-12-19 22:30:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:45,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:45,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:45,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:45,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:30:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:30:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:30:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:30:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:30:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:30:46,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:46,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906961363] [2023-12-19 22:30:46,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906961363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:46,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:30:46,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 22:30:46,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080573700] [2023-12-19 22:30:46,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:46,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 22:30:46,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:46,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 22:30:46,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:30:46,235 INFO L87 Difference]: Start difference. First operand 5492 states and 9023 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 9 states have internal predecessors, (82), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-19 22:30:53,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:53,720 INFO L93 Difference]: Finished difference Result 13819 states and 23567 transitions. [2023-12-19 22:30:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 22:30:53,720 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 9 states have internal predecessors, (82), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 108 [2023-12-19 22:30:53,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:53,754 INFO L225 Difference]: With dead ends: 13819 [2023-12-19 22:30:53,754 INFO L226 Difference]: Without dead ends: 8399 [2023-12-19 22:30:53,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2023-12-19 22:30:53,769 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 4764 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 4142 mSolverCounterSat, 1971 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4764 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 6113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1971 IncrementalHoareTripleChecker+Valid, 4142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:53,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4764 Valid, 1885 Invalid, 6113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1971 Valid, 4142 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-19 22:30:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8399 states. [2023-12-19 22:30:54,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8399 to 5516. [2023-12-19 22:30:54,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5516 states, 4360 states have (on average 1.6013761467889909) internal successors, (6982), 4469 states have internal predecessors, (6982), 860 states have call successors, (860), 221 states have call predecessors, (860), 295 states have return successors, (1205), 921 states have call predecessors, (1205), 855 states have call successors, (1205) [2023-12-19 22:30:54,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 9047 transitions. [2023-12-19 22:30:54,957 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 9047 transitions. Word has length 108 [2023-12-19 22:30:54,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:54,957 INFO L495 AbstractCegarLoop]: Abstraction has 5516 states and 9047 transitions. [2023-12-19 22:30:54,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 9 states have internal predecessors, (82), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-19 22:30:54,958 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 9047 transitions. [2023-12-19 22:30:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 22:30:54,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:54,959 INFO L195 NwaCegarLoop]: trace histogram [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 22:30:54,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 22:30:54,960 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:54,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:54,960 INFO L85 PathProgramCache]: Analyzing trace with hash 264961770, now seen corresponding path program 1 times [2023-12-19 22:30:54,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:54,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608253098] [2023-12-19 22:30:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:54,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:55,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:55,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:55,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:55,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:30:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:55,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:55,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:55,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:30:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:55,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:30:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:55,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:30:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:55,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:55,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:30:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:55,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:55,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:30:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:30:55,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:55,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608253098] [2023-12-19 22:30:55,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608253098] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:30:55,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971980114] [2023-12-19 22:30:55,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:55,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:30:55,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:30:55,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:30:55,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 22:30:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:56,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:30:56,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:30:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 22:30:56,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:30:56,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971980114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:56,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:30:56,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [20] total 23 [2023-12-19 22:30:56,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006430739] [2023-12-19 22:30:56,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:56,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:30:56,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:56,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:30:56,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2023-12-19 22:30:56,383 INFO L87 Difference]: Start difference. First operand 5516 states and 9047 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 22:30:57,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:57,744 INFO L93 Difference]: Finished difference Result 5624 states and 9230 transitions. [2023-12-19 22:30:57,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:30:57,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 110 [2023-12-19 22:30:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:57,762 INFO L225 Difference]: With dead ends: 5624 [2023-12-19 22:30:57,762 INFO L226 Difference]: Without dead ends: 5609 [2023-12-19 22:30:57,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2023-12-19 22:30:57,764 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 840 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:57,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 2170 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 22:30:57,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5609 states. [2023-12-19 22:30:58,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5609 to 5522. [2023-12-19 22:30:58,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5522 states, 4366 states have (on average 1.6005497022446176) internal successors, (6988), 4475 states have internal predecessors, (6988), 860 states have call successors, (860), 221 states have call predecessors, (860), 295 states have return successors, (1205), 921 states have call predecessors, (1205), 855 states have call successors, (1205) [2023-12-19 22:30:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5522 states to 5522 states and 9053 transitions. [2023-12-19 22:30:58,855 INFO L78 Accepts]: Start accepts. Automaton has 5522 states and 9053 transitions. Word has length 110 [2023-12-19 22:30:58,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:58,855 INFO L495 AbstractCegarLoop]: Abstraction has 5522 states and 9053 transitions. [2023-12-19 22:30:58,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 22:30:58,855 INFO L276 IsEmpty]: Start isEmpty. Operand 5522 states and 9053 transitions. [2023-12-19 22:30:58,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 22:30:58,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:58,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:30:58,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 22:30:59,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:30:59,065 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:59,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:59,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1532520335, now seen corresponding path program 1 times [2023-12-19 22:30:59,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:59,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794860083] [2023-12-19 22:30:59,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:59,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:59,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:59,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:59,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:59,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:30:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:59,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:59,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:59,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:30:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:59,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:30:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:59,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:30:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:59,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:59,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:30:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:59,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:59,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:30:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:59,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:30:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 22:30:59,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:59,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794860083] [2023-12-19 22:30:59,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794860083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:59,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:30:59,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:30:59,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879323947] [2023-12-19 22:30:59,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:59,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:30:59,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:30:59,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:30:59,624 INFO L87 Difference]: Start difference. First operand 5522 states and 9053 transitions. Second operand has 9 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 22:31:10,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:31:10,007 INFO L93 Difference]: Finished difference Result 18535 states and 32110 transitions. [2023-12-19 22:31:10,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-19 22:31:10,007 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 115 [2023-12-19 22:31:10,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:31:10,059 INFO L225 Difference]: With dead ends: 18535 [2023-12-19 22:31:10,059 INFO L226 Difference]: Without dead ends: 13087 [2023-12-19 22:31:10,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=258, Invalid=1002, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 22:31:10,078 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 4025 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 4558 mSolverCounterSat, 1066 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 2897 SdHoareTripleChecker+Invalid, 5624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1066 IncrementalHoareTripleChecker+Valid, 4558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:31:10,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 2897 Invalid, 5624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1066 Valid, 4558 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-19 22:31:10,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13087 states. [2023-12-19 22:31:12,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13087 to 10720. [2023-12-19 22:31:12,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10720 states, 8463 states have (on average 1.596951435661113) internal successors, (13515), 8710 states have internal predecessors, (13515), 1662 states have call successors, (1662), 437 states have call predecessors, (1662), 594 states have return successors, (2603), 1764 states have call predecessors, (2603), 1657 states have call successors, (2603) [2023-12-19 22:31:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10720 states to 10720 states and 17780 transitions. [2023-12-19 22:31:12,463 INFO L78 Accepts]: Start accepts. Automaton has 10720 states and 17780 transitions. Word has length 115 [2023-12-19 22:31:12,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:31:12,463 INFO L495 AbstractCegarLoop]: Abstraction has 10720 states and 17780 transitions. [2023-12-19 22:31:12,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 22:31:12,464 INFO L276 IsEmpty]: Start isEmpty. Operand 10720 states and 17780 transitions. [2023-12-19 22:31:12,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-19 22:31:12,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:31:12,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:31:12,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 22:31:12,467 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:31:12,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:31:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash -118107851, now seen corresponding path program 1 times [2023-12-19 22:31:12,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:31:12,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706765644] [2023-12-19 22:31:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:31:12,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:31:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:12,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:12,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:12,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:31:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:12,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:31:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:31:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:31:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:31:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:31:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:31:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 22:31:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 22:31:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:31:13,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:31:13,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706765644] [2023-12-19 22:31:13,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706765644] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:31:13,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389168037] [2023-12-19 22:31:13,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:31:13,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:31:13,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:31:13,435 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:31:13,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 22:31:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:31:13,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:31:14,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 22:31:14,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:31:14,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389168037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:31:14,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:31:14,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [20] total 25 [2023-12-19 22:31:14,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174991613] [2023-12-19 22:31:14,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:31:14,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:31:14,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:31:14,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:31:14,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2023-12-19 22:31:14,225 INFO L87 Difference]: Start difference. First operand 10720 states and 17780 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-19 22:31:19,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:31:19,110 INFO L93 Difference]: Finished difference Result 26982 states and 44812 transitions. [2023-12-19 22:31:19,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:31:19,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 125 [2023-12-19 22:31:19,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:31:19,179 INFO L225 Difference]: With dead ends: 26982 [2023-12-19 22:31:19,179 INFO L226 Difference]: Without dead ends: 16333 [2023-12-19 22:31:19,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2023-12-19 22:31:19,207 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1316 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 3084 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 3409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 3084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:31:19,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 2074 Invalid, 3409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 3084 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 22:31:19,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16333 states. [2023-12-19 22:31:22,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16333 to 15982. [2023-12-19 22:31:22,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15982 states, 12664 states have (on average 1.596493998736576) internal successors, (20218), 12977 states have internal predecessors, (20218), 2440 states have call successors, (2440), 645 states have call predecessors, (2440), 877 states have return successors, (3804), 2551 states have call predecessors, (3804), 2435 states have call successors, (3804) [2023-12-19 22:31:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15982 states to 15982 states and 26462 transitions. [2023-12-19 22:31:22,665 INFO L78 Accepts]: Start accepts. Automaton has 15982 states and 26462 transitions. Word has length 125 [2023-12-19 22:31:22,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:31:22,665 INFO L495 AbstractCegarLoop]: Abstraction has 15982 states and 26462 transitions. [2023-12-19 22:31:22,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-19 22:31:22,665 INFO L276 IsEmpty]: Start isEmpty. Operand 15982 states and 26462 transitions. [2023-12-19 22:31:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-19 22:31:22,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:31:22,669 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:31:22,678 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 22:31:22,871 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,SelfDestructingSolverStorable21 [2023-12-19 22:31:22,871 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:31:22,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:31:22,871 INFO L85 PathProgramCache]: Analyzing trace with hash -167804982, now seen corresponding path program 1 times [2023-12-19 22:31:22,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:31:22,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528593458] [2023-12-19 22:31:22,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:31:22,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:31:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:31:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:31:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:31:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:31:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:31:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:31:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:31:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 22:31:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:31:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 22:31:23,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:31:23,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528593458] [2023-12-19 22:31:23,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528593458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:31:23,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:31:23,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 22:31:23,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546976352] [2023-12-19 22:31:23,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:31:23,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 22:31:23,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:31:23,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 22:31:23,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:31:23,583 INFO L87 Difference]: Start difference. First operand 15982 states and 26462 transitions. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-19 22:31:41,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:31:41,751 INFO L93 Difference]: Finished difference Result 48130 states and 86511 transitions. [2023-12-19 22:31:41,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-19 22:31:41,752 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) Word has length 130 [2023-12-19 22:31:41,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:31:41,923 INFO L225 Difference]: With dead ends: 48130 [2023-12-19 22:31:41,923 INFO L226 Difference]: Without dead ends: 32219 [2023-12-19 22:31:42,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=343, Invalid=1463, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 22:31:42,002 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 5373 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 6649 mSolverCounterSat, 1574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5374 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 8223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1574 IncrementalHoareTripleChecker+Valid, 6649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:31:42,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5374 Valid, 3463 Invalid, 8223 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1574 Valid, 6649 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-19 22:31:42,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32219 states. [2023-12-19 22:31:48,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32219 to 26542. [2023-12-19 22:31:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26542 states, 20981 states have (on average 1.5863876840951336) internal successors, (33284), 21578 states have internal predecessors, (33284), 4052 states have call successors, (4052), 1077 states have call predecessors, (4052), 1508 states have return successors, (7599), 4270 states have call predecessors, (7599), 4047 states have call successors, (7599) [2023-12-19 22:31:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26542 states to 26542 states and 44935 transitions. [2023-12-19 22:31:48,276 INFO L78 Accepts]: Start accepts. Automaton has 26542 states and 44935 transitions. Word has length 130 [2023-12-19 22:31:48,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:31:48,277 INFO L495 AbstractCegarLoop]: Abstraction has 26542 states and 44935 transitions. [2023-12-19 22:31:48,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-19 22:31:48,277 INFO L276 IsEmpty]: Start isEmpty. Operand 26542 states and 44935 transitions. [2023-12-19 22:31:48,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 22:31:48,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:31:48,281 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:31:48,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 22:31:48,281 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:31:48,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:31:48,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1950978597, now seen corresponding path program 1 times [2023-12-19 22:31:48,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:31:48,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692762619] [2023-12-19 22:31:48,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:31:48,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:31:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:31:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:31:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:31:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:31:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:31:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:31:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:31:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 22:31:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 22:31:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:31:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 22:31:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-19 22:31:48,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:31:48,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692762619] [2023-12-19 22:31:48,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692762619] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:31:48,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099348294] [2023-12-19 22:31:48,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:31:48,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:31:48,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:31:48,923 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:31:48,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 22:31:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:49,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:31:49,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:31:49,235 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-19 22:31:49,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:31:49,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099348294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:31:49,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:31:49,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2023-12-19 22:31:49,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054180158] [2023-12-19 22:31:49,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:31:49,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:31:49,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:31:49,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:31:49,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:31:49,237 INFO L87 Difference]: Start difference. First operand 26542 states and 44935 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-19 22:31:55,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:31:55,339 INFO L93 Difference]: Finished difference Result 26977 states and 45711 transitions. [2023-12-19 22:31:55,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:31:55,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 147 [2023-12-19 22:31:55,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:31:55,504 INFO L225 Difference]: With dead ends: 26977 [2023-12-19 22:31:55,504 INFO L226 Difference]: Without dead ends: 26962 [2023-12-19 22:31:55,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-12-19 22:31:55,524 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 47 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:31:55,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2609 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:31:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26962 states. [2023-12-19 22:32:01,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26962 to 26574. [2023-12-19 22:32:01,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26574 states, 21013 states have (on average 1.5843525436634465) internal successors, (33292), 21610 states have internal predecessors, (33292), 4052 states have call successors, (4052), 1077 states have call predecessors, (4052), 1508 states have return successors, (7599), 4270 states have call predecessors, (7599), 4047 states have call successors, (7599) [2023-12-19 22:32:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26574 states to 26574 states and 44943 transitions. [2023-12-19 22:32:01,308 INFO L78 Accepts]: Start accepts. Automaton has 26574 states and 44943 transitions. Word has length 147 [2023-12-19 22:32:01,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:32:01,308 INFO L495 AbstractCegarLoop]: Abstraction has 26574 states and 44943 transitions. [2023-12-19 22:32:01,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-19 22:32:01,308 INFO L276 IsEmpty]: Start isEmpty. Operand 26574 states and 44943 transitions. [2023-12-19 22:32:01,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 22:32:01,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:32:01,315 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:32:01,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 22:32:01,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:32:01,523 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:32:01,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:32:01,523 INFO L85 PathProgramCache]: Analyzing trace with hash -948479290, now seen corresponding path program 1 times [2023-12-19 22:32:01,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:32:01,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087095335] [2023-12-19 22:32:01,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:32:01,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:32:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:01,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:32:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:32:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:32:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:32:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:32:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:32:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:32:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:32:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:32:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:32:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:32:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 22:32:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 22:32:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 22:32:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-19 22:32:02,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:32:02,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087095335] [2023-12-19 22:32:02,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087095335] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:32:02,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103187756] [2023-12-19 22:32:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:32:02,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:32:02,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:32:02,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:32:02,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 22:32:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:02,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:32:02,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:32:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 22:32:02,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:32:02,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103187756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:32:02,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:32:02,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2023-12-19 22:32:02,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961204658] [2023-12-19 22:32:02,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:32:02,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:32:02,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:32:02,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:32:02,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:32:02,584 INFO L87 Difference]: Start difference. First operand 26574 states and 44943 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-19 22:32:14,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:32:14,586 INFO L93 Difference]: Finished difference Result 79168 states and 139047 transitions. [2023-12-19 22:32:14,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:32:14,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 172 [2023-12-19 22:32:14,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:32:14,859 INFO L225 Difference]: With dead ends: 79168 [2023-12-19 22:32:14,859 INFO L226 Difference]: Without dead ends: 52680 [2023-12-19 22:32:14,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:32:14,964 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 699 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:32:14,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 2068 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:32:14,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52680 states. [2023-12-19 22:32:26,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52680 to 52665. [2023-12-19 22:32:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52665 states, 41622 states have (on average 1.5786843496227956) internal successors, (65708), 42822 states have internal predecessors, (65708), 8030 states have call successors, (8030), 2149 states have call predecessors, (8030), 3012 states have return successors, (17323), 8461 states have call predecessors, (17323), 8025 states have call successors, (17323) [2023-12-19 22:32:27,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52665 states to 52665 states and 91061 transitions. [2023-12-19 22:32:27,310 INFO L78 Accepts]: Start accepts. Automaton has 52665 states and 91061 transitions. Word has length 172 [2023-12-19 22:32:27,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:32:27,310 INFO L495 AbstractCegarLoop]: Abstraction has 52665 states and 91061 transitions. [2023-12-19 22:32:27,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-19 22:32:27,311 INFO L276 IsEmpty]: Start isEmpty. Operand 52665 states and 91061 transitions. [2023-12-19 22:32:27,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 22:32:27,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:32:27,322 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:32:27,328 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 22:32:27,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:32:27,528 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:32:27,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:32:27,529 INFO L85 PathProgramCache]: Analyzing trace with hash 451285921, now seen corresponding path program 1 times [2023-12-19 22:32:27,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:32:27,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754546400] [2023-12-19 22:32:27,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:32:27,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:32:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:27,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:27,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:27,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:32:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:32:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:32:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:32:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:32:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:32:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:32:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 22:32:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 22:32:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:32:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 22:32:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 22:32:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 22:32:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 22:32:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-19 22:32:28,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:32:28,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754546400] [2023-12-19 22:32:28,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754546400] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:32:28,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001256102] [2023-12-19 22:32:28,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:32:28,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:32:28,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:32:28,218 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:32:28,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 22:32:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:28,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 22:32:28,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:32:28,691 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-19 22:32:28,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 22:32:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-19 22:32:29,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001256102] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 22:32:29,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 22:32:29,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 23 [2023-12-19 22:32:29,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613871423] [2023-12-19 22:32:29,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 22:32:29,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 22:32:29,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:32:29,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 22:32:29,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-12-19 22:32:29,085 INFO L87 Difference]: Start difference. First operand 52665 states and 91061 transitions. Second operand has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 16 states have internal predecessors, (218), 8 states have call successors, (49), 8 states have call predecessors, (49), 12 states have return successors, (49), 12 states have call predecessors, (49), 8 states have call successors, (49) [2023-12-19 22:33:59,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:33:59,441 INFO L93 Difference]: Finished difference Result 272131 states and 519723 transitions. [2023-12-19 22:33:59,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-19 22:33:59,442 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 16 states have internal predecessors, (218), 8 states have call successors, (49), 8 states have call predecessors, (49), 12 states have return successors, (49), 12 states have call predecessors, (49), 8 states have call successors, (49) Word has length 175 [2023-12-19 22:33:59,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:34:02,172 INFO L225 Difference]: With dead ends: 272131 [2023-12-19 22:34:02,172 INFO L226 Difference]: Without dead ends: 219576 [2023-12-19 22:34:02,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 397 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2502 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1188, Invalid=7368, Unknown=0, NotChecked=0, Total=8556 [2023-12-19 22:34:02,808 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 8053 mSDsluCounter, 10167 mSDsCounter, 0 mSdLazyCounter, 25691 mSolverCounterSat, 2794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8067 SdHoareTripleChecker+Valid, 11498 SdHoareTripleChecker+Invalid, 28485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2794 IncrementalHoareTripleChecker+Valid, 25691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:34:02,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8067 Valid, 11498 Invalid, 28485 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2794 Valid, 25691 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2023-12-19 22:34:02,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219576 states. [2023-12-19 22:34:52,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219576 to 183708. [2023-12-19 22:34:53,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183708 states, 142462 states have (on average 1.5645716050595948) internal successors, (222892), 147172 states have internal predecessors, (222892), 30788 states have call successors, (30788), 6438 states have call predecessors, (30788), 10457 states have return successors, (81601), 33041 states have call predecessors, (81601), 30783 states have call successors, (81601) [2023-12-19 22:34:56,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183708 states to 183708 states and 335281 transitions. [2023-12-19 22:34:56,181 INFO L78 Accepts]: Start accepts. Automaton has 183708 states and 335281 transitions. Word has length 175 [2023-12-19 22:34:56,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:34:56,182 INFO L495 AbstractCegarLoop]: Abstraction has 183708 states and 335281 transitions. [2023-12-19 22:34:56,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 16 states have internal predecessors, (218), 8 states have call successors, (49), 8 states have call predecessors, (49), 12 states have return successors, (49), 12 states have call predecessors, (49), 8 states have call successors, (49) [2023-12-19 22:34:56,182 INFO L276 IsEmpty]: Start isEmpty. Operand 183708 states and 335281 transitions. [2023-12-19 22:34:56,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-19 22:34:56,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:34:56,227 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:34:56,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 22:34:56,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 22:34:56,434 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:34:56,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:34:56,435 INFO L85 PathProgramCache]: Analyzing trace with hash 408213334, now seen corresponding path program 1 times [2023-12-19 22:34:56,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:34:56,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735091072] [2023-12-19 22:34:56,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:34:56,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:34:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:34:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:34:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:34:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:34:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:34:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:34:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:34:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:34:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:34:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:34:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:34:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:34:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:34:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 22:34:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 22:34:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 22:34:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:56,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 22:34:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:57,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:34:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 22:34:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 22:34:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-19 22:34:57,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:34:57,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735091072] [2023-12-19 22:34:57,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735091072] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:34:57,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188015584] [2023-12-19 22:34:57,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:34:57,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:34:57,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:34:57,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:34:57,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 22:34:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:57,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:34:57,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:34:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-19 22:34:57,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:34:57,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188015584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:34:57,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:34:57,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-19 22:34:57,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978980087] [2023-12-19 22:34:57,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:34:57,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:34:57,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:34:57,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:34:57,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:34:57,364 INFO L87 Difference]: Start difference. First operand 183708 states and 335281 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20)