/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_spec3_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 22:45:45,888 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 22:45:45,975 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 22:45:45,980 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 22:45:45,981 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 22:45:46,007 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 22:45:46,008 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 22:45:46,008 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 22:45:46,009 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 22:45:46,012 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 22:45:46,012 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 22:45:46,012 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 22:45:46,013 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 22:45:46,014 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 22:45:46,014 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 22:45:46,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 22:45:46,015 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 22:45:46,015 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 22:45:46,015 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 22:45:46,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 22:45:46,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 22:45:46,016 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 22:45:46,016 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 22:45:46,017 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 22:45:46,017 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 22:45:46,017 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 22:45:46,017 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 22:45:46,017 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 22:45:46,018 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 22:45:46,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 22:45:46,019 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 22:45:46,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 22:45:46,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:45:46,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 22:45:46,020 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 22:45:46,020 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 22:45:46,021 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 22:45:46,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 22:45:46,021 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 22:45:46,021 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 22:45:46,021 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 22:45:46,022 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 22:45:46,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 22:45:46,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 22:45:46,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 22:45:46,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 22:45:46,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 22:45:46,275 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 22:45:46,276 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 22:45:46,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product26.cil.c [2023-12-19 22:45:47,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 22:45:47,827 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 22:45:47,828 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product26.cil.c [2023-12-19 22:45:47,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83de1efeb/6e3b1dd7e9414369ad29e339b552f3b7/FLAG9a628ca8d [2023-12-19 22:45:47,874 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83de1efeb/6e3b1dd7e9414369ad29e339b552f3b7 [2023-12-19 22:45:47,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 22:45:47,878 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 22:45:47,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 22:45:47,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 22:45:47,891 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 22:45:47,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:45:47" (1/1) ... [2023-12-19 22:45:47,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1502cd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:47, skipping insertion in model container [2023-12-19 22:45:47,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:45:47" (1/1) ... [2023-12-19 22:45:47,969 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 22:45:48,447 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_spec3_product26.cil.c[67702,67715] [2023-12-19 22:45:48,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:45:48,480 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 22:45:48,492 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-12-19 22:45:48,493 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [67] [2023-12-19 22:45:48,493 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [168] [2023-12-19 22:45:48,493 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [520] [2023-12-19 22:45:48,494 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2041] [2023-12-19 22:45:48,494 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2407] [2023-12-19 22:45:48,494 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3068] [2023-12-19 22:45:48,495 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3186] [2023-12-19 22:45:48,495 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3195] [2023-12-19 22:45:48,496 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [3230] [2023-12-19 22:45:48,574 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_spec3_product26.cil.c[67702,67715] [2023-12-19 22:45:48,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:45:48,617 INFO L206 MainTranslator]: Completed translation [2023-12-19 22:45:48,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:48 WrapperNode [2023-12-19 22:45:48,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 22:45:48,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 22:45:48,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 22:45:48,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 22:45:48,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:48" (1/1) ... [2023-12-19 22:45:48,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:48" (1/1) ... [2023-12-19 22:45:48,691 INFO L138 Inliner]: procedures = 91, calls = 346, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 862 [2023-12-19 22:45:48,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 22:45:48,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 22:45:48,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 22:45:48,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 22:45:48,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:48" (1/1) ... [2023-12-19 22:45:48,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:48" (1/1) ... [2023-12-19 22:45:48,720 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:48" (1/1) ... [2023-12-19 22:45:48,750 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-12-19 22:45:48,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:48" (1/1) ... [2023-12-19 22:45:48,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:48" (1/1) ... [2023-12-19 22:45:48,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:48" (1/1) ... [2023-12-19 22:45:48,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:48" (1/1) ... [2023-12-19 22:45:48,804 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:48" (1/1) ... [2023-12-19 22:45:48,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:48" (1/1) ... [2023-12-19 22:45:48,823 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 22:45:48,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 22:45:48,824 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 22:45:48,824 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 22:45:48,825 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:48" (1/1) ... [2023-12-19 22:45:48,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:45:48,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:45:48,853 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 22:45:48,870 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 22:45:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 22:45:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-12-19 22:45:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-12-19 22:45:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-19 22:45:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-19 22:45:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-19 22:45:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-19 22:45:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-19 22:45:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-19 22:45:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-12-19 22:45:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-12-19 22:45:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-19 22:45:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-19 22:45:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-19 22:45:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-19 22:45:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-19 22:45:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-19 22:45:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-19 22:45:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-19 22:45:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-19 22:45:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-19 22:45:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-19 22:45:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-19 22:45:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-19 22:45:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-19 22:45:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-12-19 22:45:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-12-19 22:45:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-19 22:45:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-19 22:45:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-12-19 22:45:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-12-19 22:45:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-19 22:45:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-19 22:45:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2023-12-19 22:45:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2023-12-19 22:45:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-19 22:45:48,897 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-19 22:45:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-19 22:45:48,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-19 22:45:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-19 22:45:48,897 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-19 22:45:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 22:45:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 22:45:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 22:45:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 22:45:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 22:45:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 22:45:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-19 22:45:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-19 22:45:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-19 22:45:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-19 22:45:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-19 22:45:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-19 22:45:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-19 22:45:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-19 22:45:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-19 22:45:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-19 22:45:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-19 22:45:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-19 22:45:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-19 22:45:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-19 22:45:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-12-19 22:45:48,900 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-12-19 22:45:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-19 22:45:48,901 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-19 22:45:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-19 22:45:48,901 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-19 22:45:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-19 22:45:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-19 22:45:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 22:45:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 22:45:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-19 22:45:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-19 22:45:49,091 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 22:45:49,093 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 22:45:50,085 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 22:45:50,146 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 22:45:50,146 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 22:45:50,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:45:50 BoogieIcfgContainer [2023-12-19 22:45:50,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 22:45:50,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 22:45:50,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 22:45:50,152 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 22:45:50,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 10:45:47" (1/3) ... [2023-12-19 22:45:50,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4752e3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:45:50, skipping insertion in model container [2023-12-19 22:45:50,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:48" (2/3) ... [2023-12-19 22:45:50,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4752e3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:45:50, skipping insertion in model container [2023-12-19 22:45:50,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:45:50" (3/3) ... [2023-12-19 22:45:50,154 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product26.cil.c [2023-12-19 22:45:50,169 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 22:45:50,169 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 22:45:50,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 22:45:50,232 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;@74e43545, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 22:45:50,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 22:45:50,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 556 states, 427 states have (on average 1.721311475409836) internal successors, (735), 447 states have internal predecessors, (735), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-19 22:45:50,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-19 22:45:50,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:45:50,259 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] [2023-12-19 22:45:50,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:45:50,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:45:50,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1610879925, now seen corresponding path program 1 times [2023-12-19 22:45:50,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:45:50,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221971910] [2023-12-19 22:45:50,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:50,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:45:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:51,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:45:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:51,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:51,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:45:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:51,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:51,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:45:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:51,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:45:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:51,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:45:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:51,567 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 22:45:51,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:45:51,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221971910] [2023-12-19 22:45:51,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221971910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:45:51,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:45:51,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:45:51,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903469870] [2023-12-19 22:45:51,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:45:51,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:45:51,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:45:51,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:45:51,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:45:51,610 INFO L87 Difference]: Start difference. First operand has 556 states, 427 states have (on average 1.721311475409836) internal successors, (735), 447 states have internal predecessors, (735), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:45:58,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:45:58,919 INFO L93 Difference]: Finished difference Result 1387 states and 2433 transitions. [2023-12-19 22:45:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:45:58,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 52 [2023-12-19 22:45:58,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:45:58,951 INFO L225 Difference]: With dead ends: 1387 [2023-12-19 22:45:58,951 INFO L226 Difference]: Without dead ends: 832 [2023-12-19 22:45:58,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:45:58,968 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 914 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 5180 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 5376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 5180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:45:58,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 2199 Invalid, 5376 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [196 Valid, 5180 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-19 22:45:58,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-19 22:45:59,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 562. [2023-12-19 22:45:59,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 433 states have (on average 1.7066974595842956) internal successors, (739), 453 states have internal predecessors, (739), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2023-12-19 22:45:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 944 transitions. [2023-12-19 22:45:59,135 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 944 transitions. Word has length 52 [2023-12-19 22:45:59,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:45:59,136 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 944 transitions. [2023-12-19 22:45:59,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:45:59,136 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 944 transitions. [2023-12-19 22:45:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 22:45:59,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:45:59,139 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] [2023-12-19 22:45:59,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 22:45:59,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:45:59,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:45:59,140 INFO L85 PathProgramCache]: Analyzing trace with hash -485832071, now seen corresponding path program 1 times [2023-12-19 22:45:59,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:45:59,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902332506] [2023-12-19 22:45:59,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:59,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:45:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:59,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:45:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:59,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:59,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:45:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:59,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:59,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:45:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:59,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-19 22:45:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:59,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 22:45:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:59,846 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 22:45:59,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:45:59,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902332506] [2023-12-19 22:45:59,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902332506] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:45:59,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:45:59,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:45:59,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102104111] [2023-12-19 22:45:59,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:45:59,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:45:59,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:45:59,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:45:59,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:45:59,854 INFO L87 Difference]: Start difference. First operand 562 states and 944 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:07,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:46:07,056 INFO L93 Difference]: Finished difference Result 1385 states and 2401 transitions. [2023-12-19 22:46:07,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 22:46:07,057 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 53 [2023-12-19 22:46:07,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:46:07,065 INFO L225 Difference]: With dead ends: 1385 [2023-12-19 22:46:07,065 INFO L226 Difference]: Without dead ends: 833 [2023-12-19 22:46:07,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:46:07,070 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 872 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 5307 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 5498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 5307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:46:07,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 2507 Invalid, 5498 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [191 Valid, 5307 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-19 22:46:07,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-12-19 22:46:07,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 562. [2023-12-19 22:46:07,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 433 states have (on average 1.7043879907621247) internal successors, (738), 453 states have internal predecessors, (738), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2023-12-19 22:46:07,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 943 transitions. [2023-12-19 22:46:07,190 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 943 transitions. Word has length 53 [2023-12-19 22:46:07,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:46:07,191 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 943 transitions. [2023-12-19 22:46:07,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:07,191 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 943 transitions. [2023-12-19 22:46:07,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 22:46:07,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:46:07,195 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] [2023-12-19 22:46:07,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 22:46:07,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:46:07,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:46:07,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1166356715, now seen corresponding path program 1 times [2023-12-19 22:46:07,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:46:07,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178835617] [2023-12-19 22:46:07,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:46:07,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:46:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:07,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:46:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:07,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:46:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:07,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:07,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:46:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:07,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-19 22:46:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:07,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 22:46:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:07,753 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 22:46:07,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:46:07,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178835617] [2023-12-19 22:46:07,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178835617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:46:07,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:46:07,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:46:07,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477253217] [2023-12-19 22:46:07,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:46:07,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:46:07,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:46:07,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:46:07,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:46:07,758 INFO L87 Difference]: Start difference. First operand 562 states and 943 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:46:12,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:46:12,449 INFO L93 Difference]: Finished difference Result 1378 states and 2383 transitions. [2023-12-19 22:46:12,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:46:12,452 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2023-12-19 22:46:12,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:46:12,459 INFO L225 Difference]: With dead ends: 1378 [2023-12-19 22:46:12,459 INFO L226 Difference]: Without dead ends: 797 [2023-12-19 22:46:12,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:46:12,463 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 810 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 2781 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:46:12,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1179 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2781 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-19 22:46:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2023-12-19 22:46:12,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 539. [2023-12-19 22:46:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 413 states have (on average 1.694915254237288) internal successors, (700), 431 states have internal predecessors, (700), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 22:46:12,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 901 transitions. [2023-12-19 22:46:12,564 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 901 transitions. Word has length 53 [2023-12-19 22:46:12,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:46:12,564 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 901 transitions. [2023-12-19 22:46:12,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:46:12,565 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 901 transitions. [2023-12-19 22:46:12,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 22:46:12,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:46:12,566 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] [2023-12-19 22:46:12,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 22:46:12,570 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:46:12,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:46:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash -834773185, now seen corresponding path program 1 times [2023-12-19 22:46:12,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:46:12,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428778411] [2023-12-19 22:46:12,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:46:12,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:46:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:12,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:46:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:13,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:13,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:46:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:13,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:13,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:46:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:13,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:46:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:13,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 22:46:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:13,210 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 22:46:13,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:46:13,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428778411] [2023-12-19 22:46:13,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428778411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:46:13,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:46:13,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:46:13,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232213486] [2023-12-19 22:46:13,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:46:13,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:46:13,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:46:13,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:46:13,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:46:13,212 INFO L87 Difference]: Start difference. First operand 539 states and 901 transitions. Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:19,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:46:19,326 INFO L93 Difference]: Finished difference Result 1342 states and 2315 transitions. [2023-12-19 22:46:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:46:19,328 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 54 [2023-12-19 22:46:19,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:46:19,334 INFO L225 Difference]: With dead ends: 1342 [2023-12-19 22:46:19,334 INFO L226 Difference]: Without dead ends: 791 [2023-12-19 22:46:19,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:46:19,338 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 867 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 5024 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 2336 SdHoareTripleChecker+Invalid, 5217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 5024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:46:19,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 2336 Invalid, 5217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 5024 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-19 22:46:19,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2023-12-19 22:46:19,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 533. [2023-12-19 22:46:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 407 states have (on average 1.6879606879606879) internal successors, (687), 425 states have internal predecessors, (687), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 22:46:19,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 888 transitions. [2023-12-19 22:46:19,413 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 888 transitions. Word has length 54 [2023-12-19 22:46:19,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:46:19,413 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 888 transitions. [2023-12-19 22:46:19,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:19,414 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 888 transitions. [2023-12-19 22:46:19,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 22:46:19,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:46:19,415 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] [2023-12-19 22:46:19,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 22:46:19,415 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:46:19,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:46:19,415 INFO L85 PathProgramCache]: Analyzing trace with hash 996465169, now seen corresponding path program 1 times [2023-12-19 22:46:19,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:46:19,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138479302] [2023-12-19 22:46:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:46:19,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:46:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:19,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:46:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:19,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:46:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:19,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:19,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:46:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:19,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-19 22:46:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:46:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:19,964 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 22:46:19,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:46:19,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138479302] [2023-12-19 22:46:19,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138479302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:46:19,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:46:19,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:46:19,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401365155] [2023-12-19 22:46:19,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:46:19,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:46:19,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:46:19,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:46:19,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:46:19,968 INFO L87 Difference]: Start difference. First operand 533 states and 888 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:25,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:46:25,467 INFO L93 Difference]: Finished difference Result 1314 states and 2266 transitions. [2023-12-19 22:46:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:46:25,467 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 55 [2023-12-19 22:46:25,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:46:25,473 INFO L225 Difference]: With dead ends: 1314 [2023-12-19 22:46:25,473 INFO L226 Difference]: Without dead ends: 791 [2023-12-19 22:46:25,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:46:25,478 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 821 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 4944 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 5135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 4944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:46:25,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 2337 Invalid, 5135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 4944 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-19 22:46:25,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2023-12-19 22:46:25,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 533. [2023-12-19 22:46:25,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 407 states have (on average 1.6855036855036856) internal successors, (686), 425 states have internal predecessors, (686), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 22:46:25,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 887 transitions. [2023-12-19 22:46:25,553 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 887 transitions. Word has length 55 [2023-12-19 22:46:25,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:46:25,553 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 887 transitions. [2023-12-19 22:46:25,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 887 transitions. [2023-12-19 22:46:25,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-19 22:46:25,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:46:25,555 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] [2023-12-19 22:46:25,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 22:46:25,555 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:46:25,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:46:25,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2071618366, now seen corresponding path program 1 times [2023-12-19 22:46:25,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:46:25,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884886906] [2023-12-19 22:46:25,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:46:25,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:46:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:25,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:46:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:26,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:26,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:46:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:26,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:26,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:46:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:26,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:46:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:26,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:46:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:26,115 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 22:46:26,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:46:26,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884886906] [2023-12-19 22:46:26,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884886906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:46:26,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:46:26,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:46:26,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146673065] [2023-12-19 22:46:26,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:46:26,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:46:26,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:46:26,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:46:26,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:46:26,117 INFO L87 Difference]: Start difference. First operand 533 states and 887 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:31,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:46:31,458 INFO L93 Difference]: Finished difference Result 1330 states and 2284 transitions. [2023-12-19 22:46:31,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:46:31,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 56 [2023-12-19 22:46:31,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:46:31,463 INFO L225 Difference]: With dead ends: 1330 [2023-12-19 22:46:31,463 INFO L226 Difference]: Without dead ends: 785 [2023-12-19 22:46:31,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:46:31,466 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1403 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 4733 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 5140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 4733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:46:31,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 2103 Invalid, 5140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 4733 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-19 22:46:31,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2023-12-19 22:46:31,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 527. [2023-12-19 22:46:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 401 states have (on average 1.6783042394014962) internal successors, (673), 419 states have internal predecessors, (673), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 22:46:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 874 transitions. [2023-12-19 22:46:31,539 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 874 transitions. Word has length 56 [2023-12-19 22:46:31,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:46:31,539 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 874 transitions. [2023-12-19 22:46:31,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 874 transitions. [2023-12-19 22:46:31,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 22:46:31,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:46:31,540 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] [2023-12-19 22:46:31,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 22:46:31,540 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:46:31,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:46:31,541 INFO L85 PathProgramCache]: Analyzing trace with hash -630177936, now seen corresponding path program 1 times [2023-12-19 22:46:31,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:46:31,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631406535] [2023-12-19 22:46:31,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:46:31,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:46:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:31,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:46:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:31,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:46:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:31,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:46:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:32,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 22:46:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:32,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 22:46:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:32,036 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 22:46:32,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:46:32,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631406535] [2023-12-19 22:46:32,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631406535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:46:32,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:46:32,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:46:32,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191954190] [2023-12-19 22:46:32,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:46:32,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:46:32,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:46:32,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:46:32,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:46:32,038 INFO L87 Difference]: Start difference. First operand 527 states and 874 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:37,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:46:37,362 INFO L93 Difference]: Finished difference Result 1302 states and 2237 transitions. [2023-12-19 22:46:37,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:46:37,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2023-12-19 22:46:37,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:46:37,369 INFO L225 Difference]: With dead ends: 1302 [2023-12-19 22:46:37,369 INFO L226 Difference]: Without dead ends: 785 [2023-12-19 22:46:37,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:46:37,372 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 1339 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 4706 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 5091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 4706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:46:37,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 2389 Invalid, 5091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 4706 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-19 22:46:37,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2023-12-19 22:46:37,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 527. [2023-12-19 22:46:37,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 401 states have (on average 1.6758104738154613) internal successors, (672), 419 states have internal predecessors, (672), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 22:46:37,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 873 transitions. [2023-12-19 22:46:37,477 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 873 transitions. Word has length 57 [2023-12-19 22:46:37,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:46:37,477 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 873 transitions. [2023-12-19 22:46:37,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:37,477 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 873 transitions. [2023-12-19 22:46:37,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 22:46:37,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:46:37,478 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] [2023-12-19 22:46:37,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 22:46:37,478 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:46:37,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:46:37,479 INFO L85 PathProgramCache]: Analyzing trace with hash -901366434, now seen corresponding path program 1 times [2023-12-19 22:46:37,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:46:37,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299106011] [2023-12-19 22:46:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:46:37,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:46:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:37,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:46:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:37,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:37,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:46:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:38,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:46:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:38,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:46:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:38,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:46:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:38,047 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 22:46:38,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:46:38,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299106011] [2023-12-19 22:46:38,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299106011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:46:38,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:46:38,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:46:38,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028835734] [2023-12-19 22:46:38,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:46:38,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:46:38,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:46:38,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:46:38,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:46:38,049 INFO L87 Difference]: Start difference. First operand 527 states and 873 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:43,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:46:43,174 INFO L93 Difference]: Finished difference Result 1318 states and 2253 transitions. [2023-12-19 22:46:43,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:46:43,175 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-19 22:46:43,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:46:43,180 INFO L225 Difference]: With dead ends: 1318 [2023-12-19 22:46:43,180 INFO L226 Difference]: Without dead ends: 779 [2023-12-19 22:46:43,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:46:43,187 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1340 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 4727 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 5110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 4727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:46:43,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 2372 Invalid, 5110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 4727 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-19 22:46:43,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-12-19 22:46:43,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 521. [2023-12-19 22:46:43,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 395 states have (on average 1.6683544303797468) internal successors, (659), 413 states have internal predecessors, (659), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 22:46:43,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 860 transitions. [2023-12-19 22:46:43,269 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 860 transitions. Word has length 58 [2023-12-19 22:46:43,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:46:43,270 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 860 transitions. [2023-12-19 22:46:43,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:43,270 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 860 transitions. [2023-12-19 22:46:43,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 22:46:43,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:46:43,271 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] [2023-12-19 22:46:43,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 22:46:43,271 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:46:43,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:46:43,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1246622047, now seen corresponding path program 1 times [2023-12-19 22:46:43,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:46:43,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605901134] [2023-12-19 22:46:43,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:46:43,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:46:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:46:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:43,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:43,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:46:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:43,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:46:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:46:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:43,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:46:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:43,846 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 22:46:43,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:46:43,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605901134] [2023-12-19 22:46:43,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605901134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:46:43,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:46:43,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:46:43,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574388288] [2023-12-19 22:46:43,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:46:43,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:46:43,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:46:43,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:46:43,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:46:43,848 INFO L87 Difference]: Start difference. First operand 521 states and 860 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:48,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:46:48,898 INFO L93 Difference]: Finished difference Result 1290 states and 2208 transitions. [2023-12-19 22:46:48,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:46:48,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-19 22:46:48,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:46:48,902 INFO L225 Difference]: With dead ends: 1290 [2023-12-19 22:46:48,902 INFO L226 Difference]: Without dead ends: 779 [2023-12-19 22:46:48,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:46:48,904 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 1326 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 4597 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 4976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 4597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:46:48,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 2358 Invalid, 4976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 4597 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-19 22:46:48,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-12-19 22:46:48,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 521. [2023-12-19 22:46:48,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 395 states have (on average 1.6658227848101266) internal successors, (658), 413 states have internal predecessors, (658), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 22:46:48,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 859 transitions. [2023-12-19 22:46:48,981 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 859 transitions. Word has length 58 [2023-12-19 22:46:48,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:46:48,982 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 859 transitions. [2023-12-19 22:46:48,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:48,982 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 859 transitions. [2023-12-19 22:46:48,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 22:46:48,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:46:48,983 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] [2023-12-19 22:46:48,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 22:46:48,983 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:46:48,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:46:48,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1501438826, now seen corresponding path program 1 times [2023-12-19 22:46:48,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:46:48,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270203707] [2023-12-19 22:46:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:46:48,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:46:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:49,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:46:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:49,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:49,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:46:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:49,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:49,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:46:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:49,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:46:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:49,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:46:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:49,510 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 22:46:49,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:46:49,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270203707] [2023-12-19 22:46:49,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270203707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:46:49,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:46:49,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:46:49,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533540471] [2023-12-19 22:46:49,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:46:49,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:46:49,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:46:49,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:46:49,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:46:49,511 INFO L87 Difference]: Start difference. First operand 521 states and 859 transitions. Second operand has 9 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:55,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:46:55,175 INFO L93 Difference]: Finished difference Result 1299 states and 2215 transitions. [2023-12-19 22:46:55,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:46:55,175 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2023-12-19 22:46:55,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:46:55,179 INFO L225 Difference]: With dead ends: 1299 [2023-12-19 22:46:55,179 INFO L226 Difference]: Without dead ends: 788 [2023-12-19 22:46:55,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:46:55,181 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 766 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 4662 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 4863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 4662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:46:55,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 2055 Invalid, 4863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 4662 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 22:46:55,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-12-19 22:46:55,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 527. [2023-12-19 22:46:55,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 401 states have (on average 1.655860349127182) internal successors, (664), 419 states have internal predecessors, (664), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 22:46:55,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 865 transitions. [2023-12-19 22:46:55,280 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 865 transitions. Word has length 59 [2023-12-19 22:46:55,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:46:55,280 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 865 transitions. [2023-12-19 22:46:55,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:46:55,280 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 865 transitions. [2023-12-19 22:46:55,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 22:46:55,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:46:55,282 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] [2023-12-19 22:46:55,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 22:46:55,282 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:46:55,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:46:55,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1524071080, now seen corresponding path program 1 times [2023-12-19 22:46:55,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:46:55,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151751182] [2023-12-19 22:46:55,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:46:55,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:46:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:55,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:46:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:55,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:55,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:46:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:55,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:55,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:46:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:55,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:46:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:55,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:46:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:55,831 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 22:46:55,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:46:55,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151751182] [2023-12-19 22:46:55,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151751182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:46:55,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:46:55,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:46:55,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750004361] [2023-12-19 22:46:55,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:46:55,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:46:55,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:46:55,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:46:55,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:46:55,833 INFO L87 Difference]: Start difference. First operand 527 states and 865 transitions. Second operand has 9 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:47:01,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:47:01,264 INFO L93 Difference]: Finished difference Result 1304 states and 2218 transitions. [2023-12-19 22:47:01,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 22:47:01,264 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2023-12-19 22:47:01,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:47:01,268 INFO L225 Difference]: With dead ends: 1304 [2023-12-19 22:47:01,269 INFO L226 Difference]: Without dead ends: 779 [2023-12-19 22:47:01,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:47:01,271 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 786 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 4703 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 4895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 4703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:47:01,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 2337 Invalid, 4895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 4703 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 22:47:01,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-12-19 22:47:01,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 521. [2023-12-19 22:47:01,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 395 states have (on average 1.6632911392405063) internal successors, (657), 413 states have internal predecessors, (657), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 22:47:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 858 transitions. [2023-12-19 22:47:01,349 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 858 transitions. Word has length 59 [2023-12-19 22:47:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:47:01,349 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 858 transitions. [2023-12-19 22:47:01,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:47:01,349 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 858 transitions. [2023-12-19 22:47:01,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 22:47:01,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:47:01,350 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] [2023-12-19 22:47:01,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 22:47:01,351 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:47:01,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:47:01,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1698462521, now seen corresponding path program 1 times [2023-12-19 22:47:01,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:47:01,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439826603] [2023-12-19 22:47:01,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:47:01,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:47:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:01,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:47:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:01,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:01,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:47:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:01,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:47:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:47:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:01,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:47:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 22:47:01,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:47:01,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439826603] [2023-12-19 22:47:01,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439826603] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:47:01,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598704605] [2023-12-19 22:47:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:47:01,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:47:01,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:47:01,896 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 22:47:01,908 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 22:47:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:02,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 22:47:02,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:47:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:47:02,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:47:02,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598704605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:47:02,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:47:02,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-19 22:47:02,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512682729] [2023-12-19 22:47:02,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:47:02,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:47:02,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:47:02,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:47:02,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:47:02,277 INFO L87 Difference]: Start difference. First operand 521 states and 858 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:47:02,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:47:02,429 INFO L93 Difference]: Finished difference Result 1488 states and 2477 transitions. [2023-12-19 22:47:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:47:02,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 60 [2023-12-19 22:47:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:47:02,435 INFO L225 Difference]: With dead ends: 1488 [2023-12-19 22:47:02,435 INFO L226 Difference]: Without dead ends: 979 [2023-12-19 22:47:02,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:47:02,438 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 826 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:47:02,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1603 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:47:02,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2023-12-19 22:47:02,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 965. [2023-12-19 22:47:02,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 740 states have (on average 1.672972972972973) internal successors, (1238), 775 states have internal predecessors, (1238), 180 states have call successors, (180), 45 states have call predecessors, (180), 44 states have return successors, (182), 172 states have call predecessors, (182), 177 states have call successors, (182) [2023-12-19 22:47:02,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1600 transitions. [2023-12-19 22:47:02,589 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1600 transitions. Word has length 60 [2023-12-19 22:47:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:47:02,590 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1600 transitions. [2023-12-19 22:47:02,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:47:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1600 transitions. [2023-12-19 22:47:02,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 22:47:02,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:47:02,592 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] [2023-12-19 22:47:02,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 22:47:02,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 22:47:02,800 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:47:02,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:47:02,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1311393664, now seen corresponding path program 1 times [2023-12-19 22:47:02,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:47:02,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318400728] [2023-12-19 22:47:02,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:47:02,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:47:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:03,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:47:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:03,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:03,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:47:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:03,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:03,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:47:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:03,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:47:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:03,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:47:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 22:47:03,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:47:03,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318400728] [2023-12-19 22:47:03,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318400728] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:47:03,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039974405] [2023-12-19 22:47:03,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:47:03,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:47:03,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:47:03,414 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 22:47:03,416 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 22:47:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:03,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 22:47:03,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:47:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:47:03,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:47:03,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039974405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:47:03,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:47:03,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-19 22:47:03,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474717486] [2023-12-19 22:47:03,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:47:03,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:47:03,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:47:03,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:47:03,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:47:03,754 INFO L87 Difference]: Start difference. First operand 965 states and 1600 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:47:03,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:47:03,975 INFO L93 Difference]: Finished difference Result 2376 states and 3963 transitions. [2023-12-19 22:47:03,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:47:03,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2023-12-19 22:47:03,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:47:03,983 INFO L225 Difference]: With dead ends: 2376 [2023-12-19 22:47:03,983 INFO L226 Difference]: Without dead ends: 1423 [2023-12-19 22:47:03,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:47:03,988 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 826 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:47:03,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1652 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:47:03,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2023-12-19 22:47:04,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1377. [2023-12-19 22:47:04,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1059 states have (on average 1.684608120868744) internal successors, (1784), 1111 states have internal predecessors, (1784), 255 states have call successors, (255), 62 states have call predecessors, (255), 62 states have return successors, (262), 245 states have call predecessors, (262), 252 states have call successors, (262) [2023-12-19 22:47:04,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 2301 transitions. [2023-12-19 22:47:04,166 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 2301 transitions. Word has length 61 [2023-12-19 22:47:04,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:47:04,166 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 2301 transitions. [2023-12-19 22:47:04,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:47:04,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 2301 transitions. [2023-12-19 22:47:04,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-19 22:47:04,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:47:04,168 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] [2023-12-19 22:47:04,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 22:47:04,374 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,SelfDestructingSolverStorable12 [2023-12-19 22:47:04,374 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:47:04,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:47:04,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1357021890, now seen corresponding path program 1 times [2023-12-19 22:47:04,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:47:04,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665355173] [2023-12-19 22:47:04,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:47:04,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:47:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:47:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:47:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:47:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:47:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:47:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:47:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,894 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 22:47:04,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:47:04,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665355173] [2023-12-19 22:47:04,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665355173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:47:04,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:47:04,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 22:47:04,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972471477] [2023-12-19 22:47:04,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:47:04,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:47:04,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:47:04,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:47:04,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:47:04,896 INFO L87 Difference]: Start difference. First operand 1377 states and 2301 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:47:13,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:47:13,989 INFO L93 Difference]: Finished difference Result 5447 states and 9765 transitions. [2023-12-19 22:47:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:47:13,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2023-12-19 22:47:13,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:47:14,020 INFO L225 Difference]: With dead ends: 5447 [2023-12-19 22:47:14,021 INFO L226 Difference]: Without dead ends: 4082 [2023-12-19 22:47:14,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:47:14,028 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 3308 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 4675 mSolverCounterSat, 986 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3444 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 5661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 986 IncrementalHoareTripleChecker+Valid, 4675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:47:14,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3444 Valid, 2276 Invalid, 5661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [986 Valid, 4675 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-19 22:47:14,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2023-12-19 22:47:14,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 3358. [2023-12-19 22:47:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3358 states, 2438 states have (on average 1.6521739130434783) internal successors, (4028), 2634 states have internal predecessors, (4028), 757 states have call successors, (757), 118 states have call predecessors, (757), 162 states have return successors, (1241), 755 states have call predecessors, (1241), 753 states have call successors, (1241) [2023-12-19 22:47:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3358 states to 3358 states and 6026 transitions. [2023-12-19 22:47:14,765 INFO L78 Accepts]: Start accepts. Automaton has 3358 states and 6026 transitions. Word has length 63 [2023-12-19 22:47:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:47:14,766 INFO L495 AbstractCegarLoop]: Abstraction has 3358 states and 6026 transitions. [2023-12-19 22:47:14,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:47:14,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3358 states and 6026 transitions. [2023-12-19 22:47:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 22:47:14,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:47:14,767 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] [2023-12-19 22:47:14,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 22:47:14,767 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:47:14,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:47:14,768 INFO L85 PathProgramCache]: Analyzing trace with hash 842233771, now seen corresponding path program 1 times [2023-12-19 22:47:14,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:47:14,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706247143] [2023-12-19 22:47:14,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:47:14,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:47:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:47:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:15,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:15,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:47:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:15,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:15,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:47:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:15,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:47:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:15,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:47:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:15,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:47:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 22:47:15,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:47:15,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706247143] [2023-12-19 22:47:15,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706247143] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:47:15,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054279610] [2023-12-19 22:47:15,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:47:15,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:47:15,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:47:15,330 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 22:47:15,332 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 22:47:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:15,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:47:15,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:47:15,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:47:15,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:47:15,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054279610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:47:15,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:47:15,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-12-19 22:47:15,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390172921] [2023-12-19 22:47:15,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:47:15,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:47:15,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:47:15,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:47:15,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:47:15,728 INFO L87 Difference]: Start difference. First operand 3358 states and 6026 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-19 22:47:17,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:47:17,052 INFO L93 Difference]: Finished difference Result 9033 states and 16421 transitions. [2023-12-19 22:47:17,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:47:17,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 64 [2023-12-19 22:47:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:47:17,088 INFO L225 Difference]: With dead ends: 9033 [2023-12-19 22:47:17,088 INFO L226 Difference]: Without dead ends: 5687 [2023-12-19 22:47:17,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:47:17,108 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 735 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:47:17,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 2351 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 22:47:17,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5687 states. [2023-12-19 22:47:18,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5687 to 5645. [2023-12-19 22:47:18,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5645 states, 4097 states have (on average 1.612643397608006) internal successors, (6607), 4423 states have internal predecessors, (6607), 1260 states have call successors, (1260), 210 states have call predecessors, (1260), 287 states have return successors, (2170), 1261 states have call predecessors, (2170), 1254 states have call successors, (2170) [2023-12-19 22:47:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5645 states to 5645 states and 10037 transitions. [2023-12-19 22:47:18,288 INFO L78 Accepts]: Start accepts. Automaton has 5645 states and 10037 transitions. Word has length 64 [2023-12-19 22:47:18,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:47:18,289 INFO L495 AbstractCegarLoop]: Abstraction has 5645 states and 10037 transitions. [2023-12-19 22:47:18,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-19 22:47:18,289 INFO L276 IsEmpty]: Start isEmpty. Operand 5645 states and 10037 transitions. [2023-12-19 22:47:18,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 22:47:18,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:47:18,290 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] [2023-12-19 22:47:18,297 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 22:47:18,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:47:18,492 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:47:18,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:47:18,493 INFO L85 PathProgramCache]: Analyzing trace with hash -740294043, now seen corresponding path program 1 times [2023-12-19 22:47:18,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:47:18,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411710714] [2023-12-19 22:47:18,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:47:18,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:47:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:18,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:47:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:18,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:18,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:47:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:18,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:18,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:47:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:18,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:47:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:47:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:18,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:47:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:18,950 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 22:47:18,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:47:18,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411710714] [2023-12-19 22:47:18,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411710714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:47:18,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:47:18,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:47:18,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816797815] [2023-12-19 22:47:18,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:47:18,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:47:18,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:47:18,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:47:18,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:47:18,951 INFO L87 Difference]: Start difference. First operand 5645 states and 10037 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:47:24,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:47:24,509 INFO L93 Difference]: Finished difference Result 12432 states and 22590 transitions. [2023-12-19 22:47:24,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:47:24,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2023-12-19 22:47:24,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:47:24,557 INFO L225 Difference]: With dead ends: 12432 [2023-12-19 22:47:24,557 INFO L226 Difference]: Without dead ends: 6799 [2023-12-19 22:47:24,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:47:24,587 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 767 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:47:24,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1496 Invalid, 2801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 22:47:24,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6799 states. [2023-12-19 22:47:25,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6799 to 6137. [2023-12-19 22:47:25,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6137 states, 4335 states have (on average 1.5988465974625143) internal successors, (6931), 4701 states have internal predecessors, (6931), 1496 states have call successors, (1496), 214 states have call predecessors, (1496), 305 states have return successors, (2657), 1511 states have call predecessors, (2657), 1490 states have call successors, (2657) [2023-12-19 22:47:25,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6137 states to 6137 states and 11084 transitions. [2023-12-19 22:47:25,986 INFO L78 Accepts]: Start accepts. Automaton has 6137 states and 11084 transitions. Word has length 64 [2023-12-19 22:47:25,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:47:25,986 INFO L495 AbstractCegarLoop]: Abstraction has 6137 states and 11084 transitions. [2023-12-19 22:47:25,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:47:25,987 INFO L276 IsEmpty]: Start isEmpty. Operand 6137 states and 11084 transitions. [2023-12-19 22:47:25,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-19 22:47:25,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:47:25,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:47:25,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 22:47:25,989 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:47:25,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:47:25,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1591736026, now seen corresponding path program 1 times [2023-12-19 22:47:25,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:47:25,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615193182] [2023-12-19 22:47:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:47:25,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:47:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:26,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:47:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:26,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:26,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:47:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:26,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:26,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:47:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:26,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:47:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:26,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:47:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:26,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:47:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:26,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 22:47:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 22:47:26,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:47:26,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615193182] [2023-12-19 22:47:26,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615193182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:47:26,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:47:26,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 22:47:26,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593440606] [2023-12-19 22:47:26,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:47:26,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:47:26,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:47:26,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:47:26,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:47:26,485 INFO L87 Difference]: Start difference. First operand 6137 states and 11084 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:47:37,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:47:37,448 INFO L93 Difference]: Finished difference Result 19717 states and 37167 transitions. [2023-12-19 22:47:37,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:47:37,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 72 [2023-12-19 22:47:37,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:47:37,531 INFO L225 Difference]: With dead ends: 19717 [2023-12-19 22:47:37,531 INFO L226 Difference]: Without dead ends: 13592 [2023-12-19 22:47:37,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:47:37,570 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 3300 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 4470 mSolverCounterSat, 973 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3434 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 5443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 973 IncrementalHoareTripleChecker+Valid, 4470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:47:37,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3434 Valid, 2318 Invalid, 5443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [973 Valid, 4470 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-19 22:47:37,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13592 states. [2023-12-19 22:47:40,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13592 to 12181. [2023-12-19 22:47:40,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12181 states, 8607 states have (on average 1.596375043569188) internal successors, (13740), 9333 states have internal predecessors, (13740), 2964 states have call successors, (2964), 422 states have call predecessors, (2964), 609 states have return successors, (6055), 3005 states have call predecessors, (6055), 2954 states have call successors, (6055) [2023-12-19 22:47:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12181 states to 12181 states and 22759 transitions. [2023-12-19 22:47:40,247 INFO L78 Accepts]: Start accepts. Automaton has 12181 states and 22759 transitions. Word has length 72 [2023-12-19 22:47:40,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:47:40,247 INFO L495 AbstractCegarLoop]: Abstraction has 12181 states and 22759 transitions. [2023-12-19 22:47:40,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:47:40,248 INFO L276 IsEmpty]: Start isEmpty. Operand 12181 states and 22759 transitions. [2023-12-19 22:47:40,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 22:47:40,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:47:40,249 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:47:40,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 22:47:40,249 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:47:40,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:47:40,249 INFO L85 PathProgramCache]: Analyzing trace with hash -638177899, now seen corresponding path program 1 times [2023-12-19 22:47:40,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:47:40,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455924581] [2023-12-19 22:47:40,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:47:40,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:47:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:40,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:47:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:40,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:40,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:47:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:40,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:40,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:47:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:40,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:47:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:40,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:47:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:40,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:47:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:40,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:47:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 22:47:40,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:47:40,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455924581] [2023-12-19 22:47:40,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455924581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:47:40,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:47:40,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:47:40,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168286234] [2023-12-19 22:47:40,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:47:40,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:47:40,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:47:40,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:47:40,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:47:40,715 INFO L87 Difference]: Start difference. First operand 12181 states and 22759 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 22:47:47,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:47:47,705 INFO L93 Difference]: Finished difference Result 25638 states and 49221 transitions. [2023-12-19 22:47:47,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:47:47,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2023-12-19 22:47:47,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:47:47,789 INFO L225 Difference]: With dead ends: 25638 [2023-12-19 22:47:47,789 INFO L226 Difference]: Without dead ends: 13469 [2023-12-19 22:47:47,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:47:47,851 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 774 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 2626 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 2800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 2626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:47:47,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1547 Invalid, 2800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 2626 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 22:47:47,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13469 states. [2023-12-19 22:47:50,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13469 to 12221. [2023-12-19 22:47:50,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12221 states, 8643 states have (on average 1.5943538123336805) internal successors, (13780), 9361 states have internal predecessors, (13780), 2964 states have call successors, (2964), 438 states have call predecessors, (2964), 613 states have return successors, (6035), 3001 states have call predecessors, (6035), 2954 states have call successors, (6035) [2023-12-19 22:47:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12221 states to 12221 states and 22779 transitions. [2023-12-19 22:47:50,491 INFO L78 Accepts]: Start accepts. Automaton has 12221 states and 22779 transitions. Word has length 73 [2023-12-19 22:47:50,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:47:50,492 INFO L495 AbstractCegarLoop]: Abstraction has 12221 states and 22779 transitions. [2023-12-19 22:47:50,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 22:47:50,492 INFO L276 IsEmpty]: Start isEmpty. Operand 12221 states and 22779 transitions. [2023-12-19 22:47:50,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 22:47:50,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:47:50,494 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-19 22:47:50,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 22:47:50,495 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:47:50,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:47:50,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1940371875, now seen corresponding path program 1 times [2023-12-19 22:47:50,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:47:50,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767522054] [2023-12-19 22:47:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:47:50,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:47:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:50,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:47:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:50,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:51,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:47:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:51,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:51,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:47:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:51,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:47:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:51,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:47:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:51,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:47:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:47:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:51,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:47:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:51,032 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 22:47:51,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:47:51,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767522054] [2023-12-19 22:47:51,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767522054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:47:51,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:47:51,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 22:47:51,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634150571] [2023-12-19 22:47:51,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:47:51,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:47:51,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:47:51,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:47:51,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:47:51,035 INFO L87 Difference]: Start difference. First operand 12221 states and 22779 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 22:48:05,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:48:05,213 INFO L93 Difference]: Finished difference Result 39355 states and 78641 transitions. [2023-12-19 22:48:05,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:48:05,214 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 82 [2023-12-19 22:48:05,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:48:05,447 INFO L225 Difference]: With dead ends: 39355 [2023-12-19 22:48:05,447 INFO L226 Difference]: Without dead ends: 27146 [2023-12-19 22:48:05,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:48:05,528 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 2229 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 4668 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2363 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 5293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 4668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:48:05,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2363 Valid, 2335 Invalid, 5293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 4668 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-19 22:48:05,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27146 states. [2023-12-19 22:48:10,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27146 to 24389. [2023-12-19 22:48:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24389 states, 17253 states have (on average 1.5917231785776387) internal successors, (27462), 18683 states have internal predecessors, (27462), 5906 states have call successors, (5906), 870 states have call predecessors, (5906), 1229 states have return successors, (14441), 5995 states have call predecessors, (14441), 5888 states have call successors, (14441) [2023-12-19 22:48:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24389 states to 24389 states and 47809 transitions. [2023-12-19 22:48:11,125 INFO L78 Accepts]: Start accepts. Automaton has 24389 states and 47809 transitions. Word has length 82 [2023-12-19 22:48:11,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:48:11,126 INFO L495 AbstractCegarLoop]: Abstraction has 24389 states and 47809 transitions. [2023-12-19 22:48:11,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 22:48:11,126 INFO L276 IsEmpty]: Start isEmpty. Operand 24389 states and 47809 transitions. [2023-12-19 22:48:11,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 22:48:11,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:48:11,128 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:48:11,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 22:48:11,128 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:48:11,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:48:11,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1299455948, now seen corresponding path program 1 times [2023-12-19 22:48:11,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:48:11,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446989582] [2023-12-19 22:48:11,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:48:11,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:48:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:11,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:48:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:11,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:48:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:11,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:48:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:11,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:48:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:48:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:11,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:48:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:11,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:48:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:11,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:48:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:11,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:48:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:11,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 22:48:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 22:48:11,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:48:11,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446989582] [2023-12-19 22:48:11,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446989582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:48:11,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:48:11,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:48:11,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220067685] [2023-12-19 22:48:11,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:48:11,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:48:11,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:48:11,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:48:11,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:48:11,609 INFO L87 Difference]: Start difference. First operand 24389 states and 47809 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:48:21,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:48:21,608 INFO L93 Difference]: Finished difference Result 51310 states and 105666 transitions. [2023-12-19 22:48:21,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:48:21,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2023-12-19 22:48:21,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:48:21,811 INFO L225 Difference]: With dead ends: 51310 [2023-12-19 22:48:21,811 INFO L226 Difference]: Without dead ends: 26933 [2023-12-19 22:48:21,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:48:21,983 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 776 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 2633 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:48:21,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 1537 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2633 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 22:48:22,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26933 states. [2023-12-19 22:48:26,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26933 to 24469. [2023-12-19 22:48:26,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24469 states, 17325 states have (on average 1.5897258297258297) internal successors, (27542), 18755 states have internal predecessors, (27542), 5906 states have call successors, (5906), 886 states have call predecessors, (5906), 1237 states have return successors, (14413), 5987 states have call predecessors, (14413), 5888 states have call successors, (14413) [2023-12-19 22:48:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24469 states to 24469 states and 47861 transitions. [2023-12-19 22:48:27,091 INFO L78 Accepts]: Start accepts. Automaton has 24469 states and 47861 transitions. Word has length 83 [2023-12-19 22:48:27,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:48:27,091 INFO L495 AbstractCegarLoop]: Abstraction has 24469 states and 47861 transitions. [2023-12-19 22:48:27,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:48:27,091 INFO L276 IsEmpty]: Start isEmpty. Operand 24469 states and 47861 transitions. [2023-12-19 22:48:27,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 22:48:27,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:48:27,094 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:48:27,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 22:48:27,094 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:48:27,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:48:27,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1980382503, now seen corresponding path program 1 times [2023-12-19 22:48:27,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:48:27,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131440819] [2023-12-19 22:48:27,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:48:27,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:48:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:27,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:48:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:27,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:48:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:27,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:48:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:27,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:48:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:27,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:48:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:27,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:48:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:48:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:27,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:48:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:27,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:48:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:27,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:48:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:27,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:48:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 22:48:27,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:48:27,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131440819] [2023-12-19 22:48:27,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131440819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:48:27,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:48:27,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 22:48:27,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868425631] [2023-12-19 22:48:27,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:48:27,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:48:27,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:48:27,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:48:27,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:48:27,796 INFO L87 Difference]: Start difference. First operand 24469 states and 47861 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-19 22:48:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:48:47,374 INFO L93 Difference]: Finished difference Result 78859 states and 173410 transitions. [2023-12-19 22:48:47,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:48:47,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93 [2023-12-19 22:48:47,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:48:47,831 INFO L225 Difference]: With dead ends: 78859 [2023-12-19 22:48:47,831 INFO L226 Difference]: Without dead ends: 54402 [2023-12-19 22:48:47,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:48:47,975 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 2201 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 4675 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2335 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 5298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 4675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:48:47,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2335 Valid, 2353 Invalid, 5298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 4675 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-19 22:48:48,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54402 states. [2023-12-19 22:48:57,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54402 to 48941. [2023-12-19 22:48:57,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48941 states, 34659 states have (on average 1.5876972792059783) internal successors, (55028), 37513 states have internal predecessors, (55028), 11796 states have call successors, (11796), 1766 states have call predecessors, (11796), 2485 states have return successors, (37055), 11981 states have call predecessors, (37055), 11762 states have call successors, (37055) [2023-12-19 22:48:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48941 states to 48941 states and 103879 transitions. [2023-12-19 22:48:58,535 INFO L78 Accepts]: Start accepts. Automaton has 48941 states and 103879 transitions. Word has length 93 [2023-12-19 22:48:58,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:48:58,536 INFO L495 AbstractCegarLoop]: Abstraction has 48941 states and 103879 transitions. [2023-12-19 22:48:58,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-19 22:48:58,536 INFO L276 IsEmpty]: Start isEmpty. Operand 48941 states and 103879 transitions. [2023-12-19 22:48:58,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 22:48:58,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:48:58,539 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:48:58,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 22:48:58,539 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:48:58,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:48:58,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1167844858, now seen corresponding path program 1 times [2023-12-19 22:48:58,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:48:58,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431305271] [2023-12-19 22:48:58,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:48:58,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:48:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:58,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:48:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:58,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:48:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:58,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:48:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:58,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:48:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:59,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:48:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:59,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:48:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:59,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:48:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:59,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:48:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:59,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:48:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:59,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:48:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:59,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:48:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 22:48:59,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:48:59,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431305271] [2023-12-19 22:48:59,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431305271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:48:59,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:48:59,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:48:59,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794744438] [2023-12-19 22:48:59,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:48:59,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:48:59,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:48:59,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:48:59,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:48:59,028 INFO L87 Difference]: Start difference. First operand 48941 states and 103879 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:49:16,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:49:16,291 INFO L93 Difference]: Finished difference Result 103002 states and 238375 transitions. [2023-12-19 22:49:16,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:49:16,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 94 [2023-12-19 22:49:16,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:49:16,967 INFO L225 Difference]: With dead ends: 103002 [2023-12-19 22:49:16,967 INFO L226 Difference]: Without dead ends: 54073 [2023-12-19 22:49:17,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:49:17,327 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 775 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:49:17,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 1453 Invalid, 2789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2610 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-19 22:49:17,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54073 states. [2023-12-19 22:49:28,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54073 to 49133. [2023-12-19 22:49:28,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49133 states, 34835 states have (on average 1.5851873116118846) internal successors, (55220), 37689 states have internal predecessors, (55220), 11796 states have call successors, (11796), 1798 states have call predecessors, (11796), 2501 states have return successors, (37023), 11965 states have call predecessors, (37023), 11762 states have call successors, (37023) [2023-12-19 22:49:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49133 states to 49133 states and 104039 transitions. [2023-12-19 22:49:28,778 INFO L78 Accepts]: Start accepts. Automaton has 49133 states and 104039 transitions. Word has length 94 [2023-12-19 22:49:28,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:49:28,778 INFO L495 AbstractCegarLoop]: Abstraction has 49133 states and 104039 transitions. [2023-12-19 22:49:28,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:49:28,778 INFO L276 IsEmpty]: Start isEmpty. Operand 49133 states and 104039 transitions. [2023-12-19 22:49:28,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-19 22:49:28,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:49:28,783 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:49:28,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 22:49:28,783 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:49:28,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:49:28,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1875312346, now seen corresponding path program 1 times [2023-12-19 22:49:28,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:49:28,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094877316] [2023-12-19 22:49:28,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:49:28,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:49:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:29,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:49:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:29,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:49:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:29,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:49:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:29,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:49:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:29,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:49:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:29,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:49:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:29,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:49:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:29,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:49:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:29,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:49:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:29,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 22:49:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:29,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:49:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:29,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 22:49:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:29,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 22:49:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:29,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 22:49:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-19 22:49:29,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:49:29,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094877316] [2023-12-19 22:49:29,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094877316] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:49:29,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752497873] [2023-12-19 22:49:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:49:29,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:49:29,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:49:29,731 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 22:49:29,735 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 22:49:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:49:30,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 1843 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 22:49:30,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:49:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-19 22:49:30,245 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:49:30,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752497873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:49:30,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:49:30,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 18 [2023-12-19 22:49:30,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187888243] [2023-12-19 22:49:30,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:49:30,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:49:30,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:49:30,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:49:30,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:49:30,247 INFO L87 Difference]: Start difference. First operand 49133 states and 104039 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-19 22:50:04,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:50:04,360 INFO L93 Difference]: Finished difference Result 177368 states and 405427 transitions. [2023-12-19 22:50:04,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 22:50:04,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 125 [2023-12-19 22:50:04,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted.