/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 22:01:38,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 22:01:38,744 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 22:01:38,748 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 22:01:38,749 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 22:01:38,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 22:01:38,772 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 22:01:38,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 22:01:38,773 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 22:01:38,775 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 22:01:38,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 22:01:38,776 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 22:01:38,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 22:01:38,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 22:01:38,778 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 22:01:38,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 22:01:38,778 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 22:01:38,778 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 22:01:38,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 22:01:38,779 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 22:01:38,779 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 22:01:38,780 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 22:01:38,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 22:01:38,780 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 22:01:38,780 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 22:01:38,780 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 22:01:38,780 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 22:01:38,781 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 22:01:38,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 22:01:38,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 22:01:38,782 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 22:01:38,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 22:01:38,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:01:38,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 22:01:38,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 22:01:38,782 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 22:01:38,783 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 22:01:38,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 22:01:38,783 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 22:01:38,783 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 22:01:38,783 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 22:01:38,783 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 22:01:38,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 22:01:38,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 22:01:38,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 22:01:39,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 22:01:39,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 22:01:39,012 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 22:01:39,013 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 22:01:39,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product31.cil.c [2023-12-19 22:01:40,183 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 22:01:40,473 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 22:01:40,474 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product31.cil.c [2023-12-19 22:01:40,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7c7fbb4f/e9e81e1c275747ba82c20b7054b3f393/FLAGed15c6447 [2023-12-19 22:01:40,505 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7c7fbb4f/e9e81e1c275747ba82c20b7054b3f393 [2023-12-19 22:01:40,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 22:01:40,507 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 22:01:40,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 22:01:40,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 22:01:40,512 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 22:01:40,513 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:01:40" (1/1) ... [2023-12-19 22:01:40,514 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5160b852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:01:40, skipping insertion in model container [2023-12-19 22:01:40,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:01:40" (1/1) ... [2023-12-19 22:01:40,578 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 22:01:40,702 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product31.cil.c[1546,1559] [2023-12-19 22:01:40,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:01:40,921 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 22:01:40,927 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2023-12-19 22:01:40,928 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [57] [2023-12-19 22:01:40,928 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [423] [2023-12-19 22:01:40,928 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [517] [2023-12-19 22:01:40,929 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [638] [2023-12-19 22:01:40,929 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1306] [2023-12-19 22:01:40,929 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1664] [2023-12-19 22:01:40,929 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1679] [2023-12-19 22:01:40,929 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1714] [2023-12-19 22:01:40,929 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3329] [2023-12-19 22:01:40,932 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product31.cil.c[1546,1559] [2023-12-19 22:01:41,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:01:41,035 INFO L206 MainTranslator]: Completed translation [2023-12-19 22:01:41,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:01:41 WrapperNode [2023-12-19 22:01:41,035 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 22:01:41,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 22:01:41,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 22:01:41,037 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 22:01:41,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:01:41" (1/1) ... [2023-12-19 22:01:41,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:01:41" (1/1) ... [2023-12-19 22:01:41,108 INFO L138 Inliner]: procedures = 95, calls = 348, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 916 [2023-12-19 22:01:41,109 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 22:01:41,109 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 22:01:41,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 22:01:41,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 22:01:41,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:01:41" (1/1) ... [2023-12-19 22:01:41,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:01:41" (1/1) ... [2023-12-19 22:01:41,125 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:01:41" (1/1) ... [2023-12-19 22:01:41,164 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-12-19 22:01:41,165 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:01:41" (1/1) ... [2023-12-19 22:01:41,165 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:01:41" (1/1) ... [2023-12-19 22:01:41,178 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:01:41" (1/1) ... [2023-12-19 22:01:41,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:01:41" (1/1) ... [2023-12-19 22:01:41,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:01:41" (1/1) ... [2023-12-19 22:01:41,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:01:41" (1/1) ... [2023-12-19 22:01:41,217 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 22:01:41,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 22:01:41,218 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 22:01:41,218 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 22:01:41,219 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:01:41" (1/1) ... [2023-12-19 22:01:41,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:01:41,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:41,256 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 22:01:41,292 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 22:01:41,307 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-12-19 22:01:41,307 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-12-19 22:01:41,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 22:01:41,307 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-12-19 22:01:41,307 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-12-19 22:01:41,307 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-12-19 22:01:41,307 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-12-19 22:01:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-19 22:01:41,308 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-19 22:01:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-12-19 22:01:41,308 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-12-19 22:01:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-19 22:01:41,308 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-19 22:01:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-12-19 22:01:41,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-12-19 22:01:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-19 22:01:41,309 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-19 22:01:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-12-19 22:01:41,311 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-12-19 22:01:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-19 22:01:41,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-19 22:01:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-12-19 22:01:41,311 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-12-19 22:01:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-19 22:01:41,311 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-19 22:01:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-19 22:01:41,311 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-19 22:01:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-19 22:01:41,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-19 22:01:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-19 22:01:41,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-19 22:01:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-19 22:01:41,312 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-19 22:01:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-19 22:01:41,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-19 22:01:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-12-19 22:01:41,312 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-12-19 22:01:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-19 22:01:41,312 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-19 22:01:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-19 22:01:41,312 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-19 22:01:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-19 22:01:41,312 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-19 22:01:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-19 22:01:41,312 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-19 22:01:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-19 22:01:41,312 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-19 22:01:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 22:01:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 22:01:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 22:01:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 22:01:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 22:01:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 22:01:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-19 22:01:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-19 22:01:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-19 22:01:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-19 22:01:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-19 22:01:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-19 22:01:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-19 22:01:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-19 22:01:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-19 22:01:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-19 22:01:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-19 22:01:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-19 22:01:41,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-19 22:01:41,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-19 22:01:41,315 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-12-19 22:01:41,315 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-12-19 22:01:41,316 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-19 22:01:41,316 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-19 22:01:41,316 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-19 22:01:41,316 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-19 22:01:41,316 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-19 22:01:41,316 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-19 22:01:41,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 22:01:41,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 22:01:41,316 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-19 22:01:41,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-19 22:01:41,497 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 22:01:41,499 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 22:01:42,297 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 22:01:42,357 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 22:01:42,358 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-19 22:01:42,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:01:42 BoogieIcfgContainer [2023-12-19 22:01:42,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 22:01:42,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 22:01:42,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 22:01:42,361 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 22:01:42,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 10:01:40" (1/3) ... [2023-12-19 22:01:42,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9f9968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:01:42, skipping insertion in model container [2023-12-19 22:01:42,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:01:41" (2/3) ... [2023-12-19 22:01:42,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9f9968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:01:42, skipping insertion in model container [2023-12-19 22:01:42,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:01:42" (3/3) ... [2023-12-19 22:01:42,363 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product31.cil.c [2023-12-19 22:01:42,374 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 22:01:42,374 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 22:01:42,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 22:01:42,415 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;@4321a225, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 22:01:42,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 22:01:42,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 606 states, 468 states have (on average 1.7094017094017093) internal successors, (800), 486 states have internal predecessors, (800), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-19 22:01:42,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 22:01:42,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:42,442 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:42,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:42,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1820874356, now seen corresponding path program 1 times [2023-12-19 22:01:42,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:42,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597381616] [2023-12-19 22:01:42,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:42,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:42,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:01:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:01:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:01:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:01:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:01:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:01:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:01:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:01:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 22:01:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 22:01:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 22:01:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 22:01:43,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:43,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597381616] [2023-12-19 22:01:43,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597381616] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:43,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113458613] [2023-12-19 22:01:43,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:43,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:43,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:43,162 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 22:01:43,181 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 22:01:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:43,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:01:43,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-19 22:01:43,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:43,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113458613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:43,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:43,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-19 22:01:43,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868176850] [2023-12-19 22:01:43,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:43,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:01:43,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:43,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:01:43,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:01:43,565 INFO L87 Difference]: Start difference. First operand has 606 states, 468 states have (on average 1.7094017094017093) internal successors, (800), 486 states have internal predecessors, (800), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:01:43,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:43,734 INFO L93 Difference]: Finished difference Result 1217 states and 2054 transitions. [2023-12-19 22:01:43,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:01:43,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2023-12-19 22:01:43,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:43,751 INFO L225 Difference]: With dead ends: 1217 [2023-12-19 22:01:43,751 INFO L226 Difference]: Without dead ends: 609 [2023-12-19 22:01:43,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:01:43,763 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 26 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:43,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2907 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:01:43,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-12-19 22:01:43,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2023-12-19 22:01:43,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 473 states have (on average 1.6871035940803383) internal successors, (798), 489 states have internal predecessors, (798), 108 states have call successors, (108), 29 states have call predecessors, (108), 27 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2023-12-19 22:01:43,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1011 transitions. [2023-12-19 22:01:43,837 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1011 transitions. Word has length 117 [2023-12-19 22:01:43,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:43,837 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 1011 transitions. [2023-12-19 22:01:43,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:01:43,837 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1011 transitions. [2023-12-19 22:01:43,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 22:01:43,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:43,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:43,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 22:01:44,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 22:01:44,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:44,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:44,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1987164092, now seen corresponding path program 1 times [2023-12-19 22:01:44,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:44,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299802577] [2023-12-19 22:01:44,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:44,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 22:01:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:01:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 22:01:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:01:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:01:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 22:01:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 22:01:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 22:01:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:01:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 22:01:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 22:01:44,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:44,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299802577] [2023-12-19 22:01:44,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299802577] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:44,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969904675] [2023-12-19 22:01:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:44,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:44,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:44,430 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 22:01:44,468 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 22:01:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:44,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:01:44,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:44,755 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 22:01:44,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:44,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969904675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:44,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:44,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-19 22:01:44,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24074754] [2023-12-19 22:01:44,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:44,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:01:44,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:44,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:01:44,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:01:44,757 INFO L87 Difference]: Start difference. First operand 609 states and 1011 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:44,901 INFO L93 Difference]: Finished difference Result 1228 states and 2040 transitions. [2023-12-19 22:01:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:01:44,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 119 [2023-12-19 22:01:44,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:44,904 INFO L225 Difference]: With dead ends: 1228 [2023-12-19 22:01:44,904 INFO L226 Difference]: Without dead ends: 624 [2023-12-19 22:01:44,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:01:44,908 INFO L413 NwaCegarLoop]: 968 mSDtfsCounter, 114 mSDsluCounter, 4739 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 5707 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:44,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 5707 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:01:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2023-12-19 22:01:44,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 621. [2023-12-19 22:01:44,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 482 states have (on average 1.6846473029045643) internal successors, (812), 500 states have internal predecessors, (812), 109 states have call successors, (109), 29 states have call predecessors, (109), 29 states have return successors, (111), 104 states have call predecessors, (111), 106 states have call successors, (111) [2023-12-19 22:01:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1032 transitions. [2023-12-19 22:01:44,946 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1032 transitions. Word has length 119 [2023-12-19 22:01:44,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:44,947 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 1032 transitions. [2023-12-19 22:01:44,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:44,950 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1032 transitions. [2023-12-19 22:01:44,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-19 22:01:44,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:44,955 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:44,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 22:01:45,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 22:01:45,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:45,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:45,163 INFO L85 PathProgramCache]: Analyzing trace with hash -368381880, now seen corresponding path program 1 times [2023-12-19 22:01:45,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:45,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224391520] [2023-12-19 22:01:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:45,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 22:01:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 22:01:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:01:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:01:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:01:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:01:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:01:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 22:01:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:01:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 22:01:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 22:01:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,505 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 22:01:45,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:45,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224391520] [2023-12-19 22:01:45,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224391520] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:45,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825054649] [2023-12-19 22:01:45,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:45,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:45,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:45,507 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 22:01:45,535 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 22:01:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:45,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:01:45,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-19 22:01:45,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:45,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825054649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:45,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:45,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-19 22:01:45,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122106691] [2023-12-19 22:01:45,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:45,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:01:45,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:01:45,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:01:45,774 INFO L87 Difference]: Start difference. First operand 621 states and 1032 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:01:45,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:45,863 INFO L93 Difference]: Finished difference Result 1250 states and 2075 transitions. [2023-12-19 22:01:45,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:01:45,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 120 [2023-12-19 22:01:45,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:45,869 INFO L225 Difference]: With dead ends: 1250 [2023-12-19 22:01:45,869 INFO L226 Difference]: Without dead ends: 632 [2023-12-19 22:01:45,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:01:45,874 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 20 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:45,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2890 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:01:45,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-12-19 22:01:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 630. [2023-12-19 22:01:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 490 states have (on average 1.6755102040816328) internal successors, (821), 508 states have internal predecessors, (821), 109 states have call successors, (109), 30 states have call predecessors, (109), 30 states have return successors, (110), 104 states have call predecessors, (110), 106 states have call successors, (110) [2023-12-19 22:01:45,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1040 transitions. [2023-12-19 22:01:45,907 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1040 transitions. Word has length 120 [2023-12-19 22:01:45,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:45,907 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1040 transitions. [2023-12-19 22:01:45,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:01:45,908 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1040 transitions. [2023-12-19 22:01:45,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-19 22:01:45,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:45,911 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:45,919 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 22:01:46,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:46,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:46,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:46,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1344224194, now seen corresponding path program 1 times [2023-12-19 22:01:46,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:46,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594012894] [2023-12-19 22:01:46,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:46,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 22:01:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:01:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:01:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:01:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:01:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:01:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 22:01:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:01:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 22:01:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 22:01:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 22:01:46,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:46,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594012894] [2023-12-19 22:01:46,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594012894] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:46,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306721600] [2023-12-19 22:01:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:46,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:46,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:46,482 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 22:01:46,507 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 22:01:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:46,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:01:46,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 22:01:46,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:46,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306721600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:46,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:46,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-19 22:01:46,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738310640] [2023-12-19 22:01:46,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:46,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:01:46,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:46,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:01:46,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:01:46,818 INFO L87 Difference]: Start difference. First operand 630 states and 1040 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:46,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:46,962 INFO L93 Difference]: Finished difference Result 1255 states and 2074 transitions. [2023-12-19 22:01:46,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:01:46,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 120 [2023-12-19 22:01:46,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:46,965 INFO L225 Difference]: With dead ends: 1255 [2023-12-19 22:01:46,965 INFO L226 Difference]: Without dead ends: 643 [2023-12-19 22:01:46,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:01:46,968 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 125 mSDsluCounter, 4724 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 5691 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:46,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 5691 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:01:46,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-12-19 22:01:46,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 630. [2023-12-19 22:01:46,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 490 states have (on average 1.6755102040816328) internal successors, (821), 508 states have internal predecessors, (821), 109 states have call successors, (109), 30 states have call predecessors, (109), 30 states have return successors, (110), 104 states have call predecessors, (110), 106 states have call successors, (110) [2023-12-19 22:01:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1040 transitions. [2023-12-19 22:01:46,983 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1040 transitions. Word has length 120 [2023-12-19 22:01:46,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:46,984 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1040 transitions. [2023-12-19 22:01:46,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:46,984 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1040 transitions. [2023-12-19 22:01:46,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-19 22:01:46,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:46,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:46,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 22:01:47,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:47,199 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:47,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:47,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1436828896, now seen corresponding path program 1 times [2023-12-19 22:01:47,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:47,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466520164] [2023-12-19 22:01:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:47,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:01:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:01:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:01:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 22:01:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:01:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 22:01:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:01:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 22:01:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 22:01:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 22:01:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 22:01:47,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:47,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466520164] [2023-12-19 22:01:47,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466520164] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:47,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595405235] [2023-12-19 22:01:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:47,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:47,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:47,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:01:47,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 22:01:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:47,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:01:47,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 22:01:47,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:47,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595405235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:47,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:47,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-19 22:01:47,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301091155] [2023-12-19 22:01:47,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:47,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:01:47,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:47,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:01:47,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:01:47,811 INFO L87 Difference]: Start difference. First operand 630 states and 1040 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:47,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:47,941 INFO L93 Difference]: Finished difference Result 1255 states and 2074 transitions. [2023-12-19 22:01:47,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:01:47,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 121 [2023-12-19 22:01:47,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:47,944 INFO L225 Difference]: With dead ends: 1255 [2023-12-19 22:01:47,944 INFO L226 Difference]: Without dead ends: 643 [2023-12-19 22:01:47,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:01:47,947 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 136 mSDsluCounter, 4712 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 5679 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:47,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 5679 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:01:47,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-12-19 22:01:47,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 630. [2023-12-19 22:01:47,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 490 states have (on average 1.6755102040816328) internal successors, (821), 508 states have internal predecessors, (821), 109 states have call successors, (109), 30 states have call predecessors, (109), 30 states have return successors, (110), 104 states have call predecessors, (110), 106 states have call successors, (110) [2023-12-19 22:01:47,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1040 transitions. [2023-12-19 22:01:47,963 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1040 transitions. Word has length 121 [2023-12-19 22:01:47,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:47,963 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1040 transitions. [2023-12-19 22:01:47,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:47,963 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1040 transitions. [2023-12-19 22:01:47,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-19 22:01:47,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:47,966 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:47,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 22:01:48,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:48,172 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:48,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:48,172 INFO L85 PathProgramCache]: Analyzing trace with hash 88609698, now seen corresponding path program 1 times [2023-12-19 22:01:48,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:48,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93862746] [2023-12-19 22:01:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:48,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:01:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:01:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:01:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 22:01:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:01:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:01:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:01:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 22:01:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:01:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 22:01:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 22:01:48,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:48,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93862746] [2023-12-19 22:01:48,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93862746] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:48,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453055084] [2023-12-19 22:01:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:48,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:48,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:48,408 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:01:48,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 22:01:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:48,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:01:48,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 22:01:48,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:48,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453055084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:48,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:48,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-12-19 22:01:48,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154540377] [2023-12-19 22:01:48,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:48,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:01:48,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:48,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:01:48,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:01:48,738 INFO L87 Difference]: Start difference. First operand 630 states and 1040 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:01:48,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:48,929 INFO L93 Difference]: Finished difference Result 1294 states and 2154 transitions. [2023-12-19 22:01:48,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:01:48,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 122 [2023-12-19 22:01:48,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:48,936 INFO L225 Difference]: With dead ends: 1294 [2023-12-19 22:01:48,936 INFO L226 Difference]: Without dead ends: 682 [2023-12-19 22:01:48,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:01:48,940 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 165 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:48,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 2735 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:01:48,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-12-19 22:01:48,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 674. [2023-12-19 22:01:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 533 states have (on average 1.6960600375234522) internal successors, (904), 551 states have internal predecessors, (904), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2023-12-19 22:01:48,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1122 transitions. [2023-12-19 22:01:48,957 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1122 transitions. Word has length 122 [2023-12-19 22:01:48,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:48,958 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 1122 transitions. [2023-12-19 22:01:48,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:01:48,958 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1122 transitions. [2023-12-19 22:01:48,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 22:01:48,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:48,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:48,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 22:01:49,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:49,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:49,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:49,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1389501014, now seen corresponding path program 1 times [2023-12-19 22:01:49,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:49,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806640652] [2023-12-19 22:01:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:49,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:01:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:01:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:01:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:01:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:01:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 22:01:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 22:01:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 22:01:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 22:01:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 22:01:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 22:01:49,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:49,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806640652] [2023-12-19 22:01:49,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806640652] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:49,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134147613] [2023-12-19 22:01:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:49,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:49,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:49,496 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:01:49,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 22:01:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:49,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:01:49,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 22:01:49,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:49,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134147613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:49,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:49,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-19 22:01:49,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91070050] [2023-12-19 22:01:49,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:49,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:01:49,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:49,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:01:49,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:01:49,829 INFO L87 Difference]: Start difference. First operand 674 states and 1122 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:50,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:50,185 INFO L93 Difference]: Finished difference Result 1353 states and 2253 transitions. [2023-12-19 22:01:50,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:01:50,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 123 [2023-12-19 22:01:50,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:50,189 INFO L225 Difference]: With dead ends: 1353 [2023-12-19 22:01:50,189 INFO L226 Difference]: Without dead ends: 697 [2023-12-19 22:01:50,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:01:50,192 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 131 mSDsluCounter, 5649 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 6606 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:50,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 6606 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 22:01:50,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2023-12-19 22:01:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 674. [2023-12-19 22:01:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 533 states have (on average 1.6960600375234522) internal successors, (904), 551 states have internal predecessors, (904), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2023-12-19 22:01:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1122 transitions. [2023-12-19 22:01:50,209 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1122 transitions. Word has length 123 [2023-12-19 22:01:50,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:50,209 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 1122 transitions. [2023-12-19 22:01:50,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:50,209 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1122 transitions. [2023-12-19 22:01:50,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-19 22:01:50,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:50,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:50,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 22:01:50,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:50,419 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:50,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:50,419 INFO L85 PathProgramCache]: Analyzing trace with hash -322946102, now seen corresponding path program 1 times [2023-12-19 22:01:50,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:50,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039603136] [2023-12-19 22:01:50,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:50,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:01:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:01:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:01:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:01:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:01:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 22:01:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 22:01:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:01:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 22:01:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 22:01:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 22:01:50,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:50,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039603136] [2023-12-19 22:01:50,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039603136] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:50,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552657012] [2023-12-19 22:01:50,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:50,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:50,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:50,657 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:01:50,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 22:01:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:50,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:01:50,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 22:01:50,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:50,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552657012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:50,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:50,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-19 22:01:50,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489764801] [2023-12-19 22:01:50,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:50,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:01:50,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:50,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:01:50,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:01:50,968 INFO L87 Difference]: Start difference. First operand 674 states and 1122 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:51,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:51,146 INFO L93 Difference]: Finished difference Result 1353 states and 2253 transitions. [2023-12-19 22:01:51,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:01:51,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 124 [2023-12-19 22:01:51,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:51,149 INFO L225 Difference]: With dead ends: 1353 [2023-12-19 22:01:51,150 INFO L226 Difference]: Without dead ends: 697 [2023-12-19 22:01:51,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:01:51,152 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 141 mSDsluCounter, 5637 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6594 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:51,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6594 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:01:51,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2023-12-19 22:01:51,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 674. [2023-12-19 22:01:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 533 states have (on average 1.6960600375234522) internal successors, (904), 551 states have internal predecessors, (904), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2023-12-19 22:01:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1122 transitions. [2023-12-19 22:01:51,167 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1122 transitions. Word has length 124 [2023-12-19 22:01:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:51,167 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 1122 transitions. [2023-12-19 22:01:51,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1122 transitions. [2023-12-19 22:01:51,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-19 22:01:51,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:51,170 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:51,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 22:01:51,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 22:01:51,393 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:51,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:51,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1470796327, now seen corresponding path program 1 times [2023-12-19 22:01:51,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:51,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201916890] [2023-12-19 22:01:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:51,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:01:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:01:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:01:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 22:01:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 22:01:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:01:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 22:01:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:01:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 22:01:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 22:01:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 22:01:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 22:01:51,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:51,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201916890] [2023-12-19 22:01:51,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201916890] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:51,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523106690] [2023-12-19 22:01:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:51,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:51,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:51,652 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:01:51,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 22:01:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:51,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:01:51,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:51,959 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 22:01:51,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:51,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523106690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:51,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:51,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-19 22:01:51,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360393808] [2023-12-19 22:01:51,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:51,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:01:51,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:51,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:01:51,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:01:51,962 INFO L87 Difference]: Start difference. First operand 674 states and 1122 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:01:52,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:52,060 INFO L93 Difference]: Finished difference Result 1319 states and 2201 transitions. [2023-12-19 22:01:52,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:01:52,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 125 [2023-12-19 22:01:52,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:52,064 INFO L225 Difference]: With dead ends: 1319 [2023-12-19 22:01:52,064 INFO L226 Difference]: Without dead ends: 674 [2023-12-19 22:01:52,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:01:52,068 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 35 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:52,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2888 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:01:52,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2023-12-19 22:01:52,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2023-12-19 22:01:52,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 533 states have (on average 1.6866791744840526) internal successors, (899), 551 states have internal predecessors, (899), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2023-12-19 22:01:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1117 transitions. [2023-12-19 22:01:52,085 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1117 transitions. Word has length 125 [2023-12-19 22:01:52,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:52,085 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 1117 transitions. [2023-12-19 22:01:52,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:01:52,085 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1117 transitions. [2023-12-19 22:01:52,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-19 22:01:52,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:52,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:52,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 22:01:52,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:52,295 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:52,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:52,295 INFO L85 PathProgramCache]: Analyzing trace with hash 596654903, now seen corresponding path program 1 times [2023-12-19 22:01:52,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:52,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382679128] [2023-12-19 22:01:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:52,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:01:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:01:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 22:01:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:01:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:01:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 22:01:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 22:01:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 22:01:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 22:01:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 22:01:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,556 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 22:01:52,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:52,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382679128] [2023-12-19 22:01:52,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382679128] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:52,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785398839] [2023-12-19 22:01:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:52,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:52,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:52,573 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:01:52,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 22:01:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:52,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:01:52,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:52,883 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 22:01:52,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:52,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785398839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:52,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:52,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-19 22:01:52,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275180663] [2023-12-19 22:01:52,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:52,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:01:52,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:52,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:01:52,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:01:52,885 INFO L87 Difference]: Start difference. First operand 674 states and 1117 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:53,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:53,069 INFO L93 Difference]: Finished difference Result 1287 states and 2133 transitions. [2023-12-19 22:01:53,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:01:53,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 126 [2023-12-19 22:01:53,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:53,072 INFO L225 Difference]: With dead ends: 1287 [2023-12-19 22:01:53,072 INFO L226 Difference]: Without dead ends: 698 [2023-12-19 22:01:53,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:01:53,075 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 114 mSDsluCounter, 4746 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 5715 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:53,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 5715 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:01:53,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2023-12-19 22:01:53,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 686. [2023-12-19 22:01:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 542 states have (on average 1.6845018450184501) internal successors, (913), 562 states have internal predecessors, (913), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2023-12-19 22:01:53,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1137 transitions. [2023-12-19 22:01:53,089 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1137 transitions. Word has length 126 [2023-12-19 22:01:53,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:53,091 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 1137 transitions. [2023-12-19 22:01:53,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:53,091 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1137 transitions. [2023-12-19 22:01:53,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-19 22:01:53,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:53,094 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:53,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 22:01:53,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 22:01:53,300 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:53,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:53,301 INFO L85 PathProgramCache]: Analyzing trace with hash -321375463, now seen corresponding path program 1 times [2023-12-19 22:01:53,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:53,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418290218] [2023-12-19 22:01:53,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:53,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:01:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:01:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:01:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:01:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 22:01:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:01:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 22:01:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 22:01:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 22:01:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:01:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 22:01:53,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:53,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418290218] [2023-12-19 22:01:53,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418290218] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:53,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079999537] [2023-12-19 22:01:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:53,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:53,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:53,573 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:01:53,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 22:01:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:53,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:01:53,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 22:01:53,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:53,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079999537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:53,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:53,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-19 22:01:53,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130335009] [2023-12-19 22:01:53,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:53,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:01:53,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:53,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:01:53,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:01:53,903 INFO L87 Difference]: Start difference. First operand 686 states and 1137 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:54,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:54,036 INFO L93 Difference]: Finished difference Result 1295 states and 2147 transitions. [2023-12-19 22:01:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:01:54,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 127 [2023-12-19 22:01:54,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:54,041 INFO L225 Difference]: With dead ends: 1295 [2023-12-19 22:01:54,041 INFO L226 Difference]: Without dead ends: 706 [2023-12-19 22:01:54,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:01:54,043 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 125 mSDsluCounter, 4734 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 5703 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:54,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 5703 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:01:54,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2023-12-19 22:01:54,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 686. [2023-12-19 22:01:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 542 states have (on average 1.6845018450184501) internal successors, (913), 562 states have internal predecessors, (913), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2023-12-19 22:01:54,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1137 transitions. [2023-12-19 22:01:54,060 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1137 transitions. Word has length 127 [2023-12-19 22:01:54,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:54,060 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 1137 transitions. [2023-12-19 22:01:54,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:54,060 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1137 transitions. [2023-12-19 22:01:54,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-19 22:01:54,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:54,063 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:54,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 22:01:54,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 22:01:54,270 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:54,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:54,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1824750549, now seen corresponding path program 1 times [2023-12-19 22:01:54,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:54,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853290287] [2023-12-19 22:01:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:54,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:01:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:01:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 22:01:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:01:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:01:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 22:01:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:01:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 22:01:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 22:01:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 22:01:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:01:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 22:01:54,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:54,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853290287] [2023-12-19 22:01:54,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853290287] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:54,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586495251] [2023-12-19 22:01:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:54,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:54,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:54,545 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:01:54,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 22:01:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:54,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:01:54,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:54,807 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 22:01:54,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:54,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586495251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:54,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:54,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-19 22:01:54,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765860447] [2023-12-19 22:01:54,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:54,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:01:54,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:54,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:01:54,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:01:54,809 INFO L87 Difference]: Start difference. First operand 686 states and 1137 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:01:54,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:54,873 INFO L93 Difference]: Finished difference Result 1339 states and 2229 transitions. [2023-12-19 22:01:54,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 22:01:54,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2023-12-19 22:01:54,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:54,876 INFO L225 Difference]: With dead ends: 1339 [2023-12-19 22:01:54,876 INFO L226 Difference]: Without dead ends: 686 [2023-12-19 22:01:54,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:01:54,879 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 10 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:54,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2890 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:01:54,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-12-19 22:01:54,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2023-12-19 22:01:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 542 states have (on average 1.6789667896678966) internal successors, (910), 562 states have internal predecessors, (910), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2023-12-19 22:01:54,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1134 transitions. [2023-12-19 22:01:54,892 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1134 transitions. Word has length 127 [2023-12-19 22:01:54,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:54,892 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 1134 transitions. [2023-12-19 22:01:54,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:01:54,892 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1134 transitions. [2023-12-19 22:01:54,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-19 22:01:54,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:54,894 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:54,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 22:01:55,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 22:01:55,104 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:55,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:55,105 INFO L85 PathProgramCache]: Analyzing trace with hash 296151963, now seen corresponding path program 1 times [2023-12-19 22:01:55,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:55,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455573887] [2023-12-19 22:01:55,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:55,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:01:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:01:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:01:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:01:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:01:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 22:01:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 22:01:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:01:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 22:01:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-19 22:01:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 22:01:55,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:55,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455573887] [2023-12-19 22:01:55,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455573887] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:55,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559721386] [2023-12-19 22:01:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:55,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:55,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:55,383 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:01:55,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 22:01:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:55,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:01:55,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-19 22:01:55,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:55,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559721386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:55,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:55,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-12-19 22:01:55,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7224694] [2023-12-19 22:01:55,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:55,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:01:55,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:55,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:01:55,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:01:55,666 INFO L87 Difference]: Start difference. First operand 686 states and 1134 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:01:55,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:55,819 INFO L93 Difference]: Finished difference Result 1335 states and 2224 transitions. [2023-12-19 22:01:55,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:01:55,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2023-12-19 22:01:55,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:55,823 INFO L225 Difference]: With dead ends: 1335 [2023-12-19 22:01:55,823 INFO L226 Difference]: Without dead ends: 746 [2023-12-19 22:01:55,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:01:55,826 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 235 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:55,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2715 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:01:55,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-12-19 22:01:55,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 730. [2023-12-19 22:01:55,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 585 states have (on average 1.6974358974358974) internal successors, (993), 605 states have internal predecessors, (993), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2023-12-19 22:01:55,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1214 transitions. [2023-12-19 22:01:55,842 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1214 transitions. Word has length 128 [2023-12-19 22:01:55,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:55,842 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 1214 transitions. [2023-12-19 22:01:55,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:01:55,842 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1214 transitions. [2023-12-19 22:01:55,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-19 22:01:55,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:55,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:55,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 22:01:56,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 22:01:56,052 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:56,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:56,052 INFO L85 PathProgramCache]: Analyzing trace with hash -448071267, now seen corresponding path program 1 times [2023-12-19 22:01:56,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:56,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988397558] [2023-12-19 22:01:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:56,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:01:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:01:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:01:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:01:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:01:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 22:01:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 22:01:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:01:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 22:01:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-19 22:01:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-19 22:01:56,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:56,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988397558] [2023-12-19 22:01:56,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988397558] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:56,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458335756] [2023-12-19 22:01:56,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:56,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:56,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:56,296 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:01:56,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 22:01:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:56,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:01:56,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 22:01:56,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:56,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458335756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:56,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:56,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-12-19 22:01:56,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954395268] [2023-12-19 22:01:56,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:56,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:01:56,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:56,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:01:56,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:01:56,639 INFO L87 Difference]: Start difference. First operand 730 states and 1214 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:56,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:56,818 INFO L93 Difference]: Finished difference Result 1349 states and 2238 transitions. [2023-12-19 22:01:56,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:01:56,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 128 [2023-12-19 22:01:56,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:56,821 INFO L225 Difference]: With dead ends: 1349 [2023-12-19 22:01:56,821 INFO L226 Difference]: Without dead ends: 760 [2023-12-19 22:01:56,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:01:56,825 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 132 mSDsluCounter, 5635 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6589 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:56,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6589 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:01:56,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2023-12-19 22:01:56,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 730. [2023-12-19 22:01:56,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 585 states have (on average 1.6974358974358974) internal successors, (993), 605 states have internal predecessors, (993), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2023-12-19 22:01:56,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1214 transitions. [2023-12-19 22:01:56,840 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1214 transitions. Word has length 128 [2023-12-19 22:01:56,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:56,841 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 1214 transitions. [2023-12-19 22:01:56,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:56,841 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1214 transitions. [2023-12-19 22:01:56,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-19 22:01:56,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:56,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:56,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 22:01:57,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:57,051 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:57,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:57,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1087218685, now seen corresponding path program 1 times [2023-12-19 22:01:57,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:57,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850026008] [2023-12-19 22:01:57,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:57,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:01:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:01:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 22:01:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:01:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 22:01:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:01:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 22:01:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 22:01:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 22:01:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 22:01:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,245 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-19 22:01:57,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:57,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850026008] [2023-12-19 22:01:57,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850026008] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:57,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352894945] [2023-12-19 22:01:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:57,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:57,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:57,262 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:01:57,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 22:01:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:57,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:01:57,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 22:01:57,570 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:57,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352894945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:57,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:57,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-12-19 22:01:57,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030448205] [2023-12-19 22:01:57,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:57,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:01:57,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:57,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:01:57,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:01:57,571 INFO L87 Difference]: Start difference. First operand 730 states and 1214 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:57,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:57,747 INFO L93 Difference]: Finished difference Result 1341 states and 2225 transitions. [2023-12-19 22:01:57,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:01:57,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2023-12-19 22:01:57,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:57,751 INFO L225 Difference]: With dead ends: 1341 [2023-12-19 22:01:57,751 INFO L226 Difference]: Without dead ends: 752 [2023-12-19 22:01:57,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:01:57,754 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 142 mSDsluCounter, 5623 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 6577 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:57,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 6577 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:01:57,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2023-12-19 22:01:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 730. [2023-12-19 22:01:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 585 states have (on average 1.6974358974358974) internal successors, (993), 605 states have internal predecessors, (993), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2023-12-19 22:01:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1214 transitions. [2023-12-19 22:01:57,768 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1214 transitions. Word has length 129 [2023-12-19 22:01:57,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:57,768 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 1214 transitions. [2023-12-19 22:01:57,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:01:57,768 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1214 transitions. [2023-12-19 22:01:57,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-19 22:01:57,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:57,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:57,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 22:01:57,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 22:01:57,978 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:57,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:57,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2118360034, now seen corresponding path program 1 times [2023-12-19 22:01:57,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:57,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972258672] [2023-12-19 22:01:57,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:57,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:01:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:01:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:01:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:01:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:01:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:01:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:01:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:01:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 22:01:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 22:01:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 22:01:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-19 22:01:58,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:58,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972258672] [2023-12-19 22:01:58,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972258672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:58,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665214849] [2023-12-19 22:01:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:58,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:58,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:58,186 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:01:58,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 22:01:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:58,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:01:58,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:58,518 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 22:01:58,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:58,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665214849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:58,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:58,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-12-19 22:01:58,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203648570] [2023-12-19 22:01:58,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:58,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:01:58,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:58,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:01:58,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:01:58,520 INFO L87 Difference]: Start difference. First operand 730 states and 1214 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:01:59,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:01:59,042 INFO L93 Difference]: Finished difference Result 1323 states and 2225 transitions. [2023-12-19 22:01:59,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:01:59,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2023-12-19 22:01:59,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:01:59,046 INFO L225 Difference]: With dead ends: 1323 [2023-12-19 22:01:59,046 INFO L226 Difference]: Without dead ends: 738 [2023-12-19 22:01:59,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:01:59,049 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 933 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:01:59,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 2449 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 22:01:59,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2023-12-19 22:01:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2023-12-19 22:01:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 592 states have (on average 1.697635135135135) internal successors, (1005), 612 states have internal predecessors, (1005), 110 states have call successors, (110), 33 states have call predecessors, (110), 35 states have return successors, (112), 105 states have call predecessors, (112), 107 states have call successors, (112) [2023-12-19 22:01:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1227 transitions. [2023-12-19 22:01:59,066 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1227 transitions. Word has length 130 [2023-12-19 22:01:59,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:01:59,066 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 1227 transitions. [2023-12-19 22:01:59,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:01:59,066 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1227 transitions. [2023-12-19 22:01:59,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 22:01:59,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:01:59,068 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:01:59,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 22:01:59,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 22:01:59,275 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:01:59,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:01:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash 895904128, now seen corresponding path program 1 times [2023-12-19 22:01:59,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:01:59,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837020305] [2023-12-19 22:01:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:59,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:01:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:01:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:01:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:01:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:01:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:01:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:01:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 22:01:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:01:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:01:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:01:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 22:01:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 22:01:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 22:01:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 22:01:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 22:01:59,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:01:59,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837020305] [2023-12-19 22:01:59,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837020305] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:01:59,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066780681] [2023-12-19 22:01:59,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:01:59,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:01:59,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:01:59,467 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:01:59,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 22:01:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:01:59,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:01:59,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:01:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 22:01:59,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:01:59,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066780681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:01:59,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:01:59,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-12-19 22:01:59,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126458175] [2023-12-19 22:01:59,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:01:59,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:01:59,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:01:59,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:01:59,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:01:59,796 INFO L87 Difference]: Start difference. First operand 738 states and 1227 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:00,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:00,270 INFO L93 Difference]: Finished difference Result 1339 states and 2248 transitions. [2023-12-19 22:02:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:02:00,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 132 [2023-12-19 22:02:00,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:00,278 INFO L225 Difference]: With dead ends: 1339 [2023-12-19 22:02:00,278 INFO L226 Difference]: Without dead ends: 746 [2023-12-19 22:02:00,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:02:00,281 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 943 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:00,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 2449 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 22:02:00,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-12-19 22:02:00,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2023-12-19 22:02:00,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 599 states have (on average 1.6978297161936562) internal successors, (1017), 619 states have internal predecessors, (1017), 110 states have call successors, (110), 34 states have call predecessors, (110), 36 states have return successors, (113), 105 states have call predecessors, (113), 107 states have call successors, (113) [2023-12-19 22:02:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1240 transitions. [2023-12-19 22:02:00,299 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1240 transitions. Word has length 132 [2023-12-19 22:02:00,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:00,299 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1240 transitions. [2023-12-19 22:02:00,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:00,300 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1240 transitions. [2023-12-19 22:02:00,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-19 22:02:00,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:00,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:00,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:00,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 22:02:00,509 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:00,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:00,509 INFO L85 PathProgramCache]: Analyzing trace with hash 913106338, now seen corresponding path program 1 times [2023-12-19 22:02:00,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:00,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643298879] [2023-12-19 22:02:00,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:00,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:02:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:02:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:02:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:02:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 22:02:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 22:02:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:02:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:02:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 22:02:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 22:02:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-19 22:02:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,723 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-19 22:02:00,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:00,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643298879] [2023-12-19 22:02:00,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643298879] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:00,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493031110] [2023-12-19 22:02:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:00,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:00,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:00,725 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:00,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 22:02:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:00,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:02:00,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 22:02:01,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:01,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493031110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:01,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:01,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-12-19 22:02:01,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266422819] [2023-12-19 22:02:01,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:01,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:02:01,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:01,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:02:01,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:02:01,106 INFO L87 Difference]: Start difference. First operand 746 states and 1240 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:01,623 INFO L93 Difference]: Finished difference Result 1355 states and 2271 transitions. [2023-12-19 22:02:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:02:01,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 134 [2023-12-19 22:02:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:01,627 INFO L225 Difference]: With dead ends: 1355 [2023-12-19 22:02:01,627 INFO L226 Difference]: Without dead ends: 754 [2023-12-19 22:02:01,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:02:01,631 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 940 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:01,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 2449 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 22:02:01,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-19 22:02:01,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-12-19 22:02:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 606 states have (on average 1.698019801980198) internal successors, (1029), 626 states have internal predecessors, (1029), 110 states have call successors, (110), 35 states have call predecessors, (110), 37 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2023-12-19 22:02:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1253 transitions. [2023-12-19 22:02:01,653 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1253 transitions. Word has length 134 [2023-12-19 22:02:01,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:01,653 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1253 transitions. [2023-12-19 22:02:01,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:01,653 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1253 transitions. [2023-12-19 22:02:01,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-19 22:02:01,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:01,656 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:01,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:01,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 22:02:01,875 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:01,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:01,875 INFO L85 PathProgramCache]: Analyzing trace with hash -783254728, now seen corresponding path program 1 times [2023-12-19 22:02:01,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:01,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200889838] [2023-12-19 22:02:01,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:01,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:01,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:02:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:02:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:02:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:02:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 22:02:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 22:02:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:02:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 22:02:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 22:02:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:02:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:02:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 22:02:02,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:02,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200889838] [2023-12-19 22:02:02,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200889838] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:02,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472249714] [2023-12-19 22:02:02,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:02,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:02,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:02,207 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:02,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 22:02:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:02,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:02:02,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:02,557 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 22:02:02,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:02,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472249714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:02,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:02,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-12-19 22:02:02,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896982129] [2023-12-19 22:02:02,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:02,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:02:02,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:02,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:02:02,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:02:02,559 INFO L87 Difference]: Start difference. First operand 754 states and 1253 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:03,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:03,028 INFO L93 Difference]: Finished difference Result 1371 states and 2294 transitions. [2023-12-19 22:02:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:02:03,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2023-12-19 22:02:03,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:03,032 INFO L225 Difference]: With dead ends: 1371 [2023-12-19 22:02:03,032 INFO L226 Difference]: Without dead ends: 762 [2023-12-19 22:02:03,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:02:03,035 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 918 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:03,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 2449 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 22:02:03,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-12-19 22:02:03,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2023-12-19 22:02:03,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 613 states have (on average 1.698205546492659) internal successors, (1041), 633 states have internal predecessors, (1041), 110 states have call successors, (110), 36 states have call predecessors, (110), 38 states have return successors, (115), 105 states have call predecessors, (115), 107 states have call successors, (115) [2023-12-19 22:02:03,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1266 transitions. [2023-12-19 22:02:03,052 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1266 transitions. Word has length 136 [2023-12-19 22:02:03,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:03,052 INFO L495 AbstractCegarLoop]: Abstraction has 762 states and 1266 transitions. [2023-12-19 22:02:03,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:03,052 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1266 transitions. [2023-12-19 22:02:03,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 22:02:03,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:03,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:03,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-19 22:02:03,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:03,265 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:03,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:03,265 INFO L85 PathProgramCache]: Analyzing trace with hash 633707874, now seen corresponding path program 1 times [2023-12-19 22:02:03,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:03,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237183860] [2023-12-19 22:02:03,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:03,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:02:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:02:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:02:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:02:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 22:02:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 22:02:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:02:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 22:02:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 22:02:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-19 22:02:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,565 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 22:02:03,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:03,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237183860] [2023-12-19 22:02:03,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237183860] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:03,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937659594] [2023-12-19 22:02:03,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:03,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:03,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:03,568 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:03,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 22:02:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:03,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 22:02:03,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 22:02:03,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:03,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937659594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:03,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:03,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-19 22:02:03,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994428366] [2023-12-19 22:02:03,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:03,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:02:03,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:03,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:02:03,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:02:03,851 INFO L87 Difference]: Start difference. First operand 762 states and 1266 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:02:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:03,916 INFO L93 Difference]: Finished difference Result 1506 states and 2511 transitions. [2023-12-19 22:02:03,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:02:03,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2023-12-19 22:02:03,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:03,920 INFO L225 Difference]: With dead ends: 1506 [2023-12-19 22:02:03,920 INFO L226 Difference]: Without dead ends: 728 [2023-12-19 22:02:03,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:02:03,922 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 13 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:03,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2889 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:02:03,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2023-12-19 22:02:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 728. [2023-12-19 22:02:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 582 states have (on average 1.6786941580756014) internal successors, (977), 600 states have internal predecessors, (977), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2023-12-19 22:02:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1198 transitions. [2023-12-19 22:02:03,936 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1198 transitions. Word has length 138 [2023-12-19 22:02:03,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:03,936 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1198 transitions. [2023-12-19 22:02:03,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:02:03,936 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1198 transitions. [2023-12-19 22:02:03,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 22:02:03,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:03,938 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:03,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:04,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:04,159 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:04,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:04,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1061426436, now seen corresponding path program 1 times [2023-12-19 22:02:04,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:04,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035442736] [2023-12-19 22:02:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:04,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:02:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:02:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:02:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 22:02:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 22:02:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:02:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 22:02:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 22:02:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-19 22:02:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 22:02:04,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:04,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035442736] [2023-12-19 22:02:04,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035442736] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:04,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386282473] [2023-12-19 22:02:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:04,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:04,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:04,505 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:04,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 22:02:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:04,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:02:04,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 22:02:04,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:04,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386282473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:04,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:04,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-19 22:02:04,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696754166] [2023-12-19 22:02:04,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:04,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:02:04,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:04,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:02:04,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:02:04,832 INFO L87 Difference]: Start difference. First operand 728 states and 1198 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:02:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:05,019 INFO L93 Difference]: Finished difference Result 1448 states and 2383 transitions. [2023-12-19 22:02:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:02:05,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 138 [2023-12-19 22:02:05,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:05,024 INFO L225 Difference]: With dead ends: 1448 [2023-12-19 22:02:05,024 INFO L226 Difference]: Without dead ends: 746 [2023-12-19 22:02:05,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:02:05,027 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 130 mSDsluCounter, 5609 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 6563 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:05,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 6563 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:02:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-12-19 22:02:05,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 728. [2023-12-19 22:02:05,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 582 states have (on average 1.6769759450171822) internal successors, (976), 600 states have internal predecessors, (976), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2023-12-19 22:02:05,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1197 transitions. [2023-12-19 22:02:05,050 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1197 transitions. Word has length 138 [2023-12-19 22:02:05,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:05,051 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1197 transitions. [2023-12-19 22:02:05,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:02:05,051 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1197 transitions. [2023-12-19 22:02:05,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 22:02:05,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:05,065 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:05,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:05,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:05,271 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:05,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:05,272 INFO L85 PathProgramCache]: Analyzing trace with hash -94960764, now seen corresponding path program 1 times [2023-12-19 22:02:05,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:05,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426266250] [2023-12-19 22:02:05,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:05,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:02:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:02:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:02:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:02:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 22:02:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 22:02:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 22:02:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 22:02:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-19 22:02:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,551 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 22:02:05,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:05,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426266250] [2023-12-19 22:02:05,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426266250] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:05,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051599593] [2023-12-19 22:02:05,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:05,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:05,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:05,552 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:05,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 22:02:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:05,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 22:02:05,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 22:02:05,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:05,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051599593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:05,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:05,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2023-12-19 22:02:05,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996459436] [2023-12-19 22:02:05,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:05,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:02:05,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:05,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:02:05,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:02:05,829 INFO L87 Difference]: Start difference. First operand 728 states and 1197 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:02:06,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:06,002 INFO L93 Difference]: Finished difference Result 1454 states and 2389 transitions. [2023-12-19 22:02:06,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:02:06,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 139 [2023-12-19 22:02:06,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:06,007 INFO L225 Difference]: With dead ends: 1454 [2023-12-19 22:02:06,007 INFO L226 Difference]: Without dead ends: 739 [2023-12-19 22:02:06,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:02:06,011 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 134 mSDsluCounter, 4716 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5690 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:06,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5690 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:02:06,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2023-12-19 22:02:06,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 721. [2023-12-19 22:02:06,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 575 states have (on average 1.6695652173913043) internal successors, (960), 593 states have internal predecessors, (960), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2023-12-19 22:02:06,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1181 transitions. [2023-12-19 22:02:06,046 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1181 transitions. Word has length 139 [2023-12-19 22:02:06,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:06,046 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 1181 transitions. [2023-12-19 22:02:06,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-19 22:02:06,046 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1181 transitions. [2023-12-19 22:02:06,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 22:02:06,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:06,049 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:06,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:06,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:06,250 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:06,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:06,250 INFO L85 PathProgramCache]: Analyzing trace with hash 620959268, now seen corresponding path program 1 times [2023-12-19 22:02:06,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:06,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037979728] [2023-12-19 22:02:06,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:06,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:02:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:02:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 22:02:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 22:02:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 22:02:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 22:02:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 22:02:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-19 22:02:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:02:06,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:06,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037979728] [2023-12-19 22:02:06,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037979728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:06,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:02:06,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:02:06,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218908122] [2023-12-19 22:02:06,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:06,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:02:06,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:06,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:02:06,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:02:06,506 INFO L87 Difference]: Start difference. First operand 721 states and 1181 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:02:09,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:09,996 INFO L93 Difference]: Finished difference Result 1616 states and 2675 transitions. [2023-12-19 22:02:09,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 22:02:09,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2023-12-19 22:02:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:10,001 INFO L225 Difference]: With dead ends: 1616 [2023-12-19 22:02:10,001 INFO L226 Difference]: Without dead ends: 991 [2023-12-19 22:02:10,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:02:10,005 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 1603 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 2727 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 3167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 2727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:10,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 1263 Invalid, 3167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 2727 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 22:02:10,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2023-12-19 22:02:10,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 729. [2023-12-19 22:02:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 583 states have (on average 1.6655231560891939) internal successors, (971), 601 states have internal predecessors, (971), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2023-12-19 22:02:10,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1192 transitions. [2023-12-19 22:02:10,106 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1192 transitions. Word has length 140 [2023-12-19 22:02:10,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:10,107 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1192 transitions. [2023-12-19 22:02:10,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:02:10,107 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1192 transitions. [2023-12-19 22:02:10,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 22:02:10,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:10,109 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:10,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 22:02:10,109 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:10,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:10,109 INFO L85 PathProgramCache]: Analyzing trace with hash -169787644, now seen corresponding path program 1 times [2023-12-19 22:02:10,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:10,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379364496] [2023-12-19 22:02:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:10,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:02:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:02:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:02:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 22:02:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 22:02:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 22:02:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 22:02:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 22:02:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-19 22:02:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 22:02:10,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:10,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379364496] [2023-12-19 22:02:10,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379364496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:10,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:02:10,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:02:10,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422486399] [2023-12-19 22:02:10,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:10,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:02:10,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:10,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:02:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:02:10,309 INFO L87 Difference]: Start difference. First operand 729 states and 1192 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:02:13,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:13,830 INFO L93 Difference]: Finished difference Result 1660 states and 2741 transitions. [2023-12-19 22:02:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:02:13,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2023-12-19 22:02:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:13,834 INFO L225 Difference]: With dead ends: 1660 [2023-12-19 22:02:13,834 INFO L226 Difference]: Without dead ends: 936 [2023-12-19 22:02:13,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:02:13,836 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1515 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 2781 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 3213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 2781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:13,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1570 Valid, 1313 Invalid, 3213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 2781 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 22:02:13,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2023-12-19 22:02:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 702. [2023-12-19 22:02:13,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 559 states have (on average 1.6565295169946332) internal successors, (926), 575 states have internal predecessors, (926), 108 states have call successors, (108), 36 states have call predecessors, (108), 34 states have return successors, (109), 103 states have call predecessors, (109), 105 states have call successors, (109) [2023-12-19 22:02:13,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1143 transitions. [2023-12-19 22:02:13,900 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1143 transitions. Word has length 140 [2023-12-19 22:02:13,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:13,900 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1143 transitions. [2023-12-19 22:02:13,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:02:13,901 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1143 transitions. [2023-12-19 22:02:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 22:02:13,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:13,903 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:13,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 22:02:13,903 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:13,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:13,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1973320130, now seen corresponding path program 1 times [2023-12-19 22:02:13,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:13,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413914178] [2023-12-19 22:02:13,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:13,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:02:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:02:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:02:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:02:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 22:02:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 22:02:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 22:02:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,339 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 22:02:14,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:14,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413914178] [2023-12-19 22:02:14,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413914178] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:14,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35674659] [2023-12-19 22:02:14,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:14,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:14,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:14,340 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:14,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 22:02:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:14,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:02:14,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 22:02:14,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:14,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35674659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:14,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:14,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2023-12-19 22:02:14,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002820413] [2023-12-19 22:02:14,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:14,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:02:14,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:14,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:02:14,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:02:14,676 INFO L87 Difference]: Start difference. First operand 702 states and 1143 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:14,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:14,799 INFO L93 Difference]: Finished difference Result 1575 states and 2579 transitions. [2023-12-19 22:02:14,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:02:14,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 141 [2023-12-19 22:02:14,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:14,803 INFO L225 Difference]: With dead ends: 1575 [2023-12-19 22:02:14,803 INFO L226 Difference]: Without dead ends: 954 [2023-12-19 22:02:14,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:02:14,805 INFO L413 NwaCegarLoop]: 1178 mSDtfsCounter, 685 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:14,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1738 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:02:14,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2023-12-19 22:02:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 950. [2023-12-19 22:02:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 761 states have (on average 1.6438896189224705) internal successors, (1251), 775 states have internal predecessors, (1251), 138 states have call successors, (138), 53 states have call predecessors, (138), 50 states have return successors, (151), 133 states have call predecessors, (151), 134 states have call successors, (151) [2023-12-19 22:02:14,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1540 transitions. [2023-12-19 22:02:14,895 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1540 transitions. Word has length 141 [2023-12-19 22:02:14,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:14,895 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1540 transitions. [2023-12-19 22:02:14,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:14,895 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1540 transitions. [2023-12-19 22:02:14,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 22:02:14,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:14,897 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:14,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:15,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:15,104 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:15,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash 11745472, now seen corresponding path program 1 times [2023-12-19 22:02:15,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:15,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971646695] [2023-12-19 22:02:15,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:15,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:02:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:02:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:02:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:02:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 22:02:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 22:02:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 22:02:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 22:02:15,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:15,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971646695] [2023-12-19 22:02:15,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971646695] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:15,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533103949] [2023-12-19 22:02:15,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:15,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:15,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:15,545 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:15,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 22:02:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:15,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 22:02:15,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 22:02:15,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:15,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533103949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:15,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:15,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-19 22:02:15,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873784669] [2023-12-19 22:02:15,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:15,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:02:15,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:15,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:02:15,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:02:15,912 INFO L87 Difference]: Start difference. First operand 950 states and 1540 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:02:16,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:16,432 INFO L93 Difference]: Finished difference Result 2692 states and 4446 transitions. [2023-12-19 22:02:16,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:02:16,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2023-12-19 22:02:16,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:16,439 INFO L225 Difference]: With dead ends: 2692 [2023-12-19 22:02:16,439 INFO L226 Difference]: Without dead ends: 1824 [2023-12-19 22:02:16,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:02:16,441 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 918 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 3646 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:16,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 3646 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 22:02:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2023-12-19 22:02:16,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1814. [2023-12-19 22:02:16,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1451 states have (on average 1.651274982770503) internal successors, (2396), 1479 states have internal predecessors, (2396), 265 states have call successors, (265), 100 states have call predecessors, (265), 97 states have return successors, (318), 258 states have call predecessors, (318), 259 states have call successors, (318) [2023-12-19 22:02:16,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 2979 transitions. [2023-12-19 22:02:16,606 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 2979 transitions. Word has length 141 [2023-12-19 22:02:16,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:16,606 INFO L495 AbstractCegarLoop]: Abstraction has 1814 states and 2979 transitions. [2023-12-19 22:02:16,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:02:16,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 2979 transitions. [2023-12-19 22:02:16,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 22:02:16,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:16,609 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:16,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:16,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 22:02:16,815 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:16,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:16,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1760748720, now seen corresponding path program 1 times [2023-12-19 22:02:16,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:16,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460846828] [2023-12-19 22:02:16,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:16,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:16,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:02:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:02:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:02:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:02:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:02:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:02:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-19 22:02:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 22:02:17,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:17,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460846828] [2023-12-19 22:02:17,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460846828] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:17,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006808929] [2023-12-19 22:02:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:17,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:17,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:17,211 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:17,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 22:02:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:17,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 22:02:17,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 22:02:17,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:17,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006808929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:17,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:17,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2023-12-19 22:02:17,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325987508] [2023-12-19 22:02:17,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:17,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:02:17,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:17,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:02:17,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:02:17,490 INFO L87 Difference]: Start difference. First operand 1814 states and 2979 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:17,839 INFO L93 Difference]: Finished difference Result 4404 states and 7312 transitions. [2023-12-19 22:02:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:02:17,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 145 [2023-12-19 22:02:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:17,853 INFO L225 Difference]: With dead ends: 4404 [2023-12-19 22:02:17,853 INFO L226 Difference]: Without dead ends: 2674 [2023-12-19 22:02:17,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:02:17,860 INFO L413 NwaCegarLoop]: 1826 mSDtfsCounter, 962 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:17,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 2798 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:02:17,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2023-12-19 22:02:18,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1814. [2023-12-19 22:02:18,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1451 states have (on average 1.6505858028945555) internal successors, (2395), 1479 states have internal predecessors, (2395), 265 states have call successors, (265), 100 states have call predecessors, (265), 97 states have return successors, (318), 258 states have call predecessors, (318), 259 states have call successors, (318) [2023-12-19 22:02:18,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 2978 transitions. [2023-12-19 22:02:18,100 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 2978 transitions. Word has length 145 [2023-12-19 22:02:18,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:18,101 INFO L495 AbstractCegarLoop]: Abstraction has 1814 states and 2978 transitions. [2023-12-19 22:02:18,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:18,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 2978 transitions. [2023-12-19 22:02:18,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 22:02:18,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:18,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:18,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:18,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 22:02:18,311 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:18,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:18,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1059148846, now seen corresponding path program 1 times [2023-12-19 22:02:18,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:18,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316013293] [2023-12-19 22:02:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:18,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:02:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:02:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:02:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:02:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:02:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:02:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-19 22:02:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 22:02:18,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:18,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316013293] [2023-12-19 22:02:18,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316013293] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:18,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337106211] [2023-12-19 22:02:18,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:18,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:18,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:18,711 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:18,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-19 22:02:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:18,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 22:02:18,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 22:02:19,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:19,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337106211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:19,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:19,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-12-19 22:02:19,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002793471] [2023-12-19 22:02:19,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:19,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:02:19,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:19,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:02:19,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:02:19,028 INFO L87 Difference]: Start difference. First operand 1814 states and 2978 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:19,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:19,631 INFO L93 Difference]: Finished difference Result 2678 states and 4431 transitions. [2023-12-19 22:02:19,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:02:19,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 145 [2023-12-19 22:02:19,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:19,639 INFO L225 Difference]: With dead ends: 2678 [2023-12-19 22:02:19,639 INFO L226 Difference]: Without dead ends: 2675 [2023-12-19 22:02:19,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:02:19,640 INFO L413 NwaCegarLoop]: 1822 mSDtfsCounter, 937 mSDsluCounter, 5347 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 7169 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:19,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 7169 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 22:02:19,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2023-12-19 22:02:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 2665. [2023-12-19 22:02:19,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2133 states have (on average 1.6549460853258322) internal successors, (3530), 2171 states have internal predecessors, (3530), 390 states have call successors, (390), 146 states have call predecessors, (390), 141 states have return successors, (486), 383 states have call predecessors, (486), 382 states have call successors, (486) [2023-12-19 22:02:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 4406 transitions. [2023-12-19 22:02:19,918 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 4406 transitions. Word has length 145 [2023-12-19 22:02:19,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:19,919 INFO L495 AbstractCegarLoop]: Abstraction has 2665 states and 4406 transitions. [2023-12-19 22:02:19,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:19,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 4406 transitions. [2023-12-19 22:02:19,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 22:02:19,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:19,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:19,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:20,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 22:02:20,128 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:20,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:20,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1485989106, now seen corresponding path program 1 times [2023-12-19 22:02:20,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:20,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647334387] [2023-12-19 22:02:20,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:20,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:02:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:02:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:02:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:02:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:02:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:02:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-19 22:02:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 22:02:20,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:20,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647334387] [2023-12-19 22:02:20,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647334387] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:20,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953239224] [2023-12-19 22:02:20,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:20,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:20,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:20,479 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:20,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-19 22:02:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:20,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 22:02:20,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:20,759 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 22:02:20,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:20,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953239224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:20,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:20,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2023-12-19 22:02:20,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304068253] [2023-12-19 22:02:20,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:20,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:02:20,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:20,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:02:20,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:02:20,761 INFO L87 Difference]: Start difference. First operand 2665 states and 4406 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:21,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:21,081 INFO L93 Difference]: Finished difference Result 5285 states and 8854 transitions. [2023-12-19 22:02:21,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:02:21,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 145 [2023-12-19 22:02:21,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:21,090 INFO L225 Difference]: With dead ends: 5285 [2023-12-19 22:02:21,091 INFO L226 Difference]: Without dead ends: 2701 [2023-12-19 22:02:21,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:02:21,099 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 85 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:21,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2823 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:02:21,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2023-12-19 22:02:21,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2023-12-19 22:02:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2163 states have (on average 1.6486361534905225) internal successors, (3566), 2201 states have internal predecessors, (3566), 390 states have call successors, (390), 152 states have call predecessors, (390), 147 states have return successors, (486), 383 states have call predecessors, (486), 382 states have call successors, (486) [2023-12-19 22:02:21,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 4442 transitions. [2023-12-19 22:02:21,401 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 4442 transitions. Word has length 145 [2023-12-19 22:02:21,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:21,401 INFO L495 AbstractCegarLoop]: Abstraction has 2701 states and 4442 transitions. [2023-12-19 22:02:21,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:21,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 4442 transitions. [2023-12-19 22:02:21,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 22:02:21,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:21,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:21,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:21,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 22:02:21,627 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:21,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:21,627 INFO L85 PathProgramCache]: Analyzing trace with hash 828797573, now seen corresponding path program 1 times [2023-12-19 22:02:21,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:21,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232902190] [2023-12-19 22:02:21,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:21,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:22,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:22,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:02:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:22,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:22,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:02:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:22,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:02:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:22,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:22,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:22,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:22,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:02:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:22,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:22,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:02:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:22,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-19 22:02:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:22,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-19 22:02:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 22:02:22,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:22,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232902190] [2023-12-19 22:02:22,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232902190] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:22,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974674573] [2023-12-19 22:02:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:22,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:22,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:22,063 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:22,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-19 22:02:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:22,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 22:02:22,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 22:02:22,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:22,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974674573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:22,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:22,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-12-19 22:02:22,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088882363] [2023-12-19 22:02:22,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:22,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:02:22,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:22,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:02:22,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:02:22,549 INFO L87 Difference]: Start difference. First operand 2701 states and 4442 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 22:02:26,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:26,440 INFO L93 Difference]: Finished difference Result 8985 states and 15101 transitions. [2023-12-19 22:02:26,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:02:26,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 147 [2023-12-19 22:02:26,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:26,468 INFO L225 Difference]: With dead ends: 8985 [2023-12-19 22:02:26,468 INFO L226 Difference]: Without dead ends: 6364 [2023-12-19 22:02:26,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-12-19 22:02:26,479 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 3366 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 5936 mSolverCounterSat, 816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3485 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 6752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 5936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:26,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3485 Valid, 1520 Invalid, 6752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [816 Valid, 5936 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 22:02:26,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2023-12-19 22:02:27,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 6052. [2023-12-19 22:02:27,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6052 states, 4836 states have (on average 1.6430934656741107) internal successors, (7946), 4923 states have internal predecessors, (7946), 870 states have call successors, (870), 358 states have call predecessors, (870), 345 states have return successors, (1181), 854 states have call predecessors, (1181), 855 states have call successors, (1181) [2023-12-19 22:02:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6052 states to 6052 states and 9997 transitions. [2023-12-19 22:02:27,157 INFO L78 Accepts]: Start accepts. Automaton has 6052 states and 9997 transitions. Word has length 147 [2023-12-19 22:02:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:27,157 INFO L495 AbstractCegarLoop]: Abstraction has 6052 states and 9997 transitions. [2023-12-19 22:02:27,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 22:02:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand 6052 states and 9997 transitions. [2023-12-19 22:02:27,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-19 22:02:27,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:27,161 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:27,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:27,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:27,367 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:27,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:27,368 INFO L85 PathProgramCache]: Analyzing trace with hash -627528580, now seen corresponding path program 1 times [2023-12-19 22:02:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:27,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688801702] [2023-12-19 22:02:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:27,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:02:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:02:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:02:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:02:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-19 22:02:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-19 22:02:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-19 22:02:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 22:02:27,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:27,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688801702] [2023-12-19 22:02:27,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688801702] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:27,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515352800] [2023-12-19 22:02:27,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:27,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:27,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:27,724 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:27,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-19 22:02:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:27,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 22:02:27,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 22:02:28,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:28,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515352800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:28,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:28,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-19 22:02:28,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943219291] [2023-12-19 22:02:28,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:28,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:02:28,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:28,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:02:28,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:02:28,133 INFO L87 Difference]: Start difference. First operand 6052 states and 9997 transitions. Second operand has 6 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 22:02:29,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:29,466 INFO L93 Difference]: Finished difference Result 13989 states and 23449 transitions. [2023-12-19 22:02:29,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:02:29,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 148 [2023-12-19 22:02:29,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:29,503 INFO L225 Difference]: With dead ends: 13989 [2023-12-19 22:02:29,503 INFO L226 Difference]: Without dead ends: 8004 [2023-12-19 22:02:29,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-12-19 22:02:29,523 INFO L413 NwaCegarLoop]: 1276 mSDtfsCounter, 1746 mSDsluCounter, 4193 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:29,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1748 Valid, 5469 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 22:02:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8004 states. [2023-12-19 22:02:30,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8004 to 7985. [2023-12-19 22:02:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7985 states, 6491 states have (on average 1.6398089662609767) internal successors, (10644), 6576 states have internal predecessors, (10644), 1007 states have call successors, (1007), 506 states have call predecessors, (1007), 486 states have return successors, (1748), 986 states have call predecessors, (1748), 982 states have call successors, (1748) [2023-12-19 22:02:30,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7985 states to 7985 states and 13399 transitions. [2023-12-19 22:02:30,469 INFO L78 Accepts]: Start accepts. Automaton has 7985 states and 13399 transitions. Word has length 148 [2023-12-19 22:02:30,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:30,469 INFO L495 AbstractCegarLoop]: Abstraction has 7985 states and 13399 transitions. [2023-12-19 22:02:30,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 22:02:30,470 INFO L276 IsEmpty]: Start isEmpty. Operand 7985 states and 13399 transitions. [2023-12-19 22:02:30,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-19 22:02:30,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:30,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:30,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:30,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:30,681 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:30,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:30,681 INFO L85 PathProgramCache]: Analyzing trace with hash 174478589, now seen corresponding path program 1 times [2023-12-19 22:02:30,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:30,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439789873] [2023-12-19 22:02:30,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:30,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:30,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:30,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:30,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:30,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:30,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:30,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:02:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:30,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:30,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:02:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:30,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:02:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:30,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:30,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:30,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:31,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:02:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:31,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:31,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:02:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:31,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 22:02:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:31,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-19 22:02:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 22:02:31,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:31,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439789873] [2023-12-19 22:02:31,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439789873] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:31,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751586702] [2023-12-19 22:02:31,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:31,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:31,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:31,026 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:31,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-19 22:02:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:31,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 22:02:31,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:31,454 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:02:31,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:31,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751586702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:31,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:31,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-12-19 22:02:31,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050607208] [2023-12-19 22:02:31,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:31,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:02:31,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:31,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:02:31,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:02:31,456 INFO L87 Difference]: Start difference. First operand 7985 states and 13399 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 22:02:35,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:35,707 INFO L93 Difference]: Finished difference Result 15260 states and 25600 transitions. [2023-12-19 22:02:35,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:02:35,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 150 [2023-12-19 22:02:35,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:35,751 INFO L225 Difference]: With dead ends: 15260 [2023-12-19 22:02:35,752 INFO L226 Difference]: Without dead ends: 8468 [2023-12-19 22:02:35,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-12-19 22:02:35,778 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 3267 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 5915 mSolverCounterSat, 785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3386 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 6700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 5915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:35,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3386 Valid, 1528 Invalid, 6700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 5915 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:02:35,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8468 states. [2023-12-19 22:02:36,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8468 to 7979. [2023-12-19 22:02:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7979 states, 6485 states have (on average 1.6385505011565151) internal successors, (10626), 6570 states have internal predecessors, (10626), 1007 states have call successors, (1007), 506 states have call predecessors, (1007), 486 states have return successors, (1748), 986 states have call predecessors, (1748), 982 states have call successors, (1748) [2023-12-19 22:02:36,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7979 states to 7979 states and 13381 transitions. [2023-12-19 22:02:36,634 INFO L78 Accepts]: Start accepts. Automaton has 7979 states and 13381 transitions. Word has length 150 [2023-12-19 22:02:36,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:36,635 INFO L495 AbstractCegarLoop]: Abstraction has 7979 states and 13381 transitions. [2023-12-19 22:02:36,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 22:02:36,635 INFO L276 IsEmpty]: Start isEmpty. Operand 7979 states and 13381 transitions. [2023-12-19 22:02:36,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-19 22:02:36,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:36,638 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:36,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:36,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-19 22:02:36,846 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:36,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:36,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1530311065, now seen corresponding path program 1 times [2023-12-19 22:02:36,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:36,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584031778] [2023-12-19 22:02:36,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:36,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:36,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:02:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:02:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:02:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:02:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:02:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-19 22:02:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-19 22:02:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 22:02:37,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:37,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584031778] [2023-12-19 22:02:37,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584031778] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:37,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40634821] [2023-12-19 22:02:37,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:37,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:37,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:37,226 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:37,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-19 22:02:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:37,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 22:02:37,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:37,519 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 22:02:37,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:37,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40634821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:37,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:37,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2023-12-19 22:02:37,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033247092] [2023-12-19 22:02:37,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:37,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:02:37,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:37,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:02:37,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:02:37,521 INFO L87 Difference]: Start difference. First operand 7979 states and 13381 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:38,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:38,362 INFO L93 Difference]: Finished difference Result 15942 states and 27418 transitions. [2023-12-19 22:02:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:02:38,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2023-12-19 22:02:38,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:38,391 INFO L225 Difference]: With dead ends: 15942 [2023-12-19 22:02:38,391 INFO L226 Difference]: Without dead ends: 7956 [2023-12-19 22:02:38,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:02:38,427 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 91 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:38,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 2819 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:02:38,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7956 states. [2023-12-19 22:02:39,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7956 to 7956. [2023-12-19 22:02:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7956 states, 6462 states have (on average 1.6301454658000618) internal successors, (10534), 6547 states have internal predecessors, (10534), 1007 states have call successors, (1007), 506 states have call predecessors, (1007), 486 states have return successors, (1748), 986 states have call predecessors, (1748), 982 states have call successors, (1748) [2023-12-19 22:02:39,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7956 states to 7956 states and 13289 transitions. [2023-12-19 22:02:39,242 INFO L78 Accepts]: Start accepts. Automaton has 7956 states and 13289 transitions. Word has length 152 [2023-12-19 22:02:39,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:39,243 INFO L495 AbstractCegarLoop]: Abstraction has 7956 states and 13289 transitions. [2023-12-19 22:02:39,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:39,243 INFO L276 IsEmpty]: Start isEmpty. Operand 7956 states and 13289 transitions. [2023-12-19 22:02:39,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-19 22:02:39,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:39,249 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:39,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:39,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:39,455 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:39,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:39,455 INFO L85 PathProgramCache]: Analyzing trace with hash -688180887, now seen corresponding path program 1 times [2023-12-19 22:02:39,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:39,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205507190] [2023-12-19 22:02:39,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:39,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:02:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:02:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:02:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:02:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:02:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-19 22:02:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-19 22:02:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:02:39,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:39,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205507190] [2023-12-19 22:02:39,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205507190] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:39,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862991107] [2023-12-19 22:02:39,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:39,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:39,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:39,871 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:39,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-19 22:02:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 22:02:40,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:40,299 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:02:40,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:40,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862991107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:40,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:40,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-12-19 22:02:40,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964561176] [2023-12-19 22:02:40,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:40,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:02:40,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:40,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:02:40,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:02:40,301 INFO L87 Difference]: Start difference. First operand 7956 states and 13289 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 22:02:45,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:45,018 INFO L93 Difference]: Finished difference Result 24252 states and 42911 transitions. [2023-12-19 22:02:45,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:02:45,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 153 [2023-12-19 22:02:45,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:45,067 INFO L225 Difference]: With dead ends: 24252 [2023-12-19 22:02:45,067 INFO L226 Difference]: Without dead ends: 16374 [2023-12-19 22:02:45,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2023-12-19 22:02:45,111 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 3526 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 3764 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3639 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 4667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 3764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:45,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3639 Valid, 1081 Invalid, 4667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 3764 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 22:02:45,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16374 states. [2023-12-19 22:02:46,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16374 to 13966. [2023-12-19 22:02:46,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13966 states, 11308 states have (on average 1.6036434382737885) internal successors, (18134), 11468 states have internal predecessors, (18134), 1773 states have call successors, (1773), 905 states have call predecessors, (1773), 884 states have return successors, (3009), 1748 states have call predecessors, (3009), 1744 states have call successors, (3009) [2023-12-19 22:02:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13966 states to 13966 states and 22916 transitions. [2023-12-19 22:02:46,747 INFO L78 Accepts]: Start accepts. Automaton has 13966 states and 22916 transitions. Word has length 153 [2023-12-19 22:02:46,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:46,748 INFO L495 AbstractCegarLoop]: Abstraction has 13966 states and 22916 transitions. [2023-12-19 22:02:46,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 22:02:46,748 INFO L276 IsEmpty]: Start isEmpty. Operand 13966 states and 22916 transitions. [2023-12-19 22:02:46,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-19 22:02:46,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:46,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:46,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-19 22:02:46,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:46,956 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:46,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:46,957 INFO L85 PathProgramCache]: Analyzing trace with hash -48712054, now seen corresponding path program 1 times [2023-12-19 22:02:46,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:46,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470343706] [2023-12-19 22:02:46,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:46,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:02:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:02:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:02:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:02:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:02:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-19 22:02:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-19 22:02:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:02:47,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:47,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470343706] [2023-12-19 22:02:47,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470343706] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:47,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81719146] [2023-12-19 22:02:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:47,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:47,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:47,296 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:47,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-19 22:02:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:47,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 22:02:47,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:02:47,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:47,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81719146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:47,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:47,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-12-19 22:02:47,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643769426] [2023-12-19 22:02:47,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:47,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:02:47,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:47,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:02:47,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:02:47,738 INFO L87 Difference]: Start difference. First operand 13966 states and 22916 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 22:02:51,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:51,783 INFO L93 Difference]: Finished difference Result 27448 states and 45291 transitions. [2023-12-19 22:02:51,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:02:51,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 154 [2023-12-19 22:02:51,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:51,859 INFO L225 Difference]: With dead ends: 27448 [2023-12-19 22:02:51,859 INFO L226 Difference]: Without dead ends: 14750 [2023-12-19 22:02:51,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-12-19 22:02:51,909 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 2893 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 5756 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3014 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 6398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 5756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:51,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3014 Valid, 1751 Invalid, 6398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 5756 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 22:02:51,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14750 states. [2023-12-19 22:02:53,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14750 to 13948. [2023-12-19 22:02:53,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13948 states, 11290 states have (on average 1.6014171833480957) internal successors, (18080), 11450 states have internal predecessors, (18080), 1773 states have call successors, (1773), 905 states have call predecessors, (1773), 884 states have return successors, (3009), 1748 states have call predecessors, (3009), 1744 states have call successors, (3009) [2023-12-19 22:02:53,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13948 states to 13948 states and 22862 transitions. [2023-12-19 22:02:53,616 INFO L78 Accepts]: Start accepts. Automaton has 13948 states and 22862 transitions. Word has length 154 [2023-12-19 22:02:53,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:53,617 INFO L495 AbstractCegarLoop]: Abstraction has 13948 states and 22862 transitions. [2023-12-19 22:02:53,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 22:02:53,617 INFO L276 IsEmpty]: Start isEmpty. Operand 13948 states and 22862 transitions. [2023-12-19 22:02:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-19 22:02:53,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:53,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:53,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:53,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-19 22:02:53,826 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:53,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 335926688, now seen corresponding path program 1 times [2023-12-19 22:02:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85191024] [2023-12-19 22:02:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:53,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:02:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:02:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:02:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:02:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:02:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-19 22:02:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-19 22:02:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:02:54,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:54,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85191024] [2023-12-19 22:02:54,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85191024] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:54,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304086280] [2023-12-19 22:02:54,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:54,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:54,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:54,169 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:54,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-19 22:02:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:54,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 22:02:54,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:02:54,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:54,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304086280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:54,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:54,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-19 22:02:54,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763265964] [2023-12-19 22:02:54,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:54,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:02:54,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:54,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:02:54,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:02:54,456 INFO L87 Difference]: Start difference. First operand 13948 states and 22862 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:56,063 INFO L93 Difference]: Finished difference Result 28066 states and 46525 transitions. [2023-12-19 22:02:56,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:02:56,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 156 [2023-12-19 22:02:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:56,110 INFO L225 Difference]: With dead ends: 28066 [2023-12-19 22:02:56,110 INFO L226 Difference]: Without dead ends: 14203 [2023-12-19 22:02:56,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:02:56,173 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 1 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3897 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:56,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3897 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:02:56,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14203 states. [2023-12-19 22:02:57,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14203 to 14048. [2023-12-19 22:02:57,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14048 states, 11365 states have (on average 1.5974483062032556) internal successors, (18155), 11525 states have internal predecessors, (18155), 1773 states have call successors, (1773), 905 states have call predecessors, (1773), 909 states have return successors, (3034), 1773 states have call predecessors, (3034), 1744 states have call successors, (3034) [2023-12-19 22:02:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14048 states to 14048 states and 22962 transitions. [2023-12-19 22:02:57,754 INFO L78 Accepts]: Start accepts. Automaton has 14048 states and 22962 transitions. Word has length 156 [2023-12-19 22:02:57,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:57,754 INFO L495 AbstractCegarLoop]: Abstraction has 14048 states and 22962 transitions. [2023-12-19 22:02:57,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:02:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 14048 states and 22962 transitions. [2023-12-19 22:02:57,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 22:02:57,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:57,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:02:57,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:57,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-19 22:02:57,964 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:57,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:57,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1308164733, now seen corresponding path program 1 times [2023-12-19 22:02:57,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:57,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642828713] [2023-12-19 22:02:57,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:57,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:02:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:02:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:02:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:02:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:02:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-19 22:02:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-19 22:02:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 22:02:58,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:58,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642828713] [2023-12-19 22:02:58,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642828713] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:58,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006715353] [2023-12-19 22:02:58,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:58,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:58,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:58,296 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:02:58,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-19 22:02:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:58,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:02:58,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:02:58,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 22:02:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 22:02:58,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006715353] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 22:02:58,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 22:02:58,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 24 [2023-12-19 22:02:58,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984620020] [2023-12-19 22:02:58,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 22:02:58,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 22:02:58,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:58,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 22:02:58,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2023-12-19 22:02:58,968 INFO L87 Difference]: Start difference. First operand 14048 states and 22962 transitions. Second operand has 24 states, 23 states have (on average 11.26086956521739) internal successors, (259), 20 states have internal predecessors, (259), 9 states have call successors, (51), 9 states have call predecessors, (51), 11 states have return successors, (48), 12 states have call predecessors, (48), 9 states have call successors, (48) [2023-12-19 22:04:11,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:04:11,991 INFO L93 Difference]: Finished difference Result 139320 states and 309250 transitions. [2023-12-19 22:04:11,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2023-12-19 22:04:11,992 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 11.26086956521739) internal successors, (259), 20 states have internal predecessors, (259), 9 states have call successors, (51), 9 states have call predecessors, (51), 11 states have return successors, (48), 12 states have call predecessors, (48), 9 states have call successors, (48) Word has length 161 [2023-12-19 22:04:11,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:04:13,344 INFO L225 Difference]: With dead ends: 139320 [2023-12-19 22:04:13,345 INFO L226 Difference]: Without dead ends: 125297 [2023-12-19 22:04:13,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 416 SyntacticMatches, 2 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21791 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=7539, Invalid=38901, Unknown=0, NotChecked=0, Total=46440 [2023-12-19 22:04:13,996 INFO L413 NwaCegarLoop]: 2235 mSDtfsCounter, 24425 mSDsluCounter, 18024 mSDsCounter, 0 mSdLazyCounter, 47674 mSolverCounterSat, 10404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24453 SdHoareTripleChecker+Valid, 20259 SdHoareTripleChecker+Invalid, 58078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 10404 IncrementalHoareTripleChecker+Valid, 47674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:04:13,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24453 Valid, 20259 Invalid, 58078 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [10404 Valid, 47674 Invalid, 0 Unknown, 0 Unchecked, 33.4s Time] [2023-12-19 22:04:14,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125297 states. [2023-12-19 22:04:25,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125297 to 66231. [2023-12-19 22:04:25,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66231 states, 52694 states have (on average 1.571848787338217) internal successors, (82827), 54210 states have internal predecessors, (82827), 8816 states have call successors, (8816), 3971 states have call predecessors, (8816), 4720 states have return successors, (16394), 8948 states have call predecessors, (16394), 8756 states have call successors, (16394) [2023-12-19 22:04:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66231 states to 66231 states and 108037 transitions. [2023-12-19 22:04:26,473 INFO L78 Accepts]: Start accepts. Automaton has 66231 states and 108037 transitions. Word has length 161 [2023-12-19 22:04:26,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:04:26,474 INFO L495 AbstractCegarLoop]: Abstraction has 66231 states and 108037 transitions. [2023-12-19 22:04:26,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 11.26086956521739) internal successors, (259), 20 states have internal predecessors, (259), 9 states have call successors, (51), 9 states have call predecessors, (51), 11 states have return successors, (48), 12 states have call predecessors, (48), 9 states have call successors, (48) [2023-12-19 22:04:26,474 INFO L276 IsEmpty]: Start isEmpty. Operand 66231 states and 108037 transitions. [2023-12-19 22:04:26,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-12-19 22:04:26,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:04:26,481 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:26,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-19 22:04:26,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-19 22:04:26,688 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:04:26,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:04:26,689 INFO L85 PathProgramCache]: Analyzing trace with hash 476696089, now seen corresponding path program 1 times [2023-12-19 22:04:26,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:04:26,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352789086] [2023-12-19 22:04:26,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:04:26,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:04:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:04:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:26,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:04:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:26,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:04:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:26,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:26,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:04:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:04:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:04:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:04:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:04:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:04:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 22:04:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:04:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:04:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:04:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:04:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-19 22:04:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-19 22:04:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-19 22:04:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:04:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-19 22:04:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:04:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-19 22:04:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:04:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-19 22:04:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-19 22:04:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-12-19 22:04:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-12-19 22:04:27,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:04:27,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352789086] [2023-12-19 22:04:27,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352789086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:04:27,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:04:27,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 22:04:27,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875200038] [2023-12-19 22:04:27,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:04:27,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:04:27,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:04:27,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:04:27,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:04:27,270 INFO L87 Difference]: Start difference. First operand 66231 states and 108037 transitions. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (31), 6 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-19 22:04:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:04:50,629 INFO L93 Difference]: Finished difference Result 160315 states and 278175 transitions. [2023-12-19 22:04:50,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 22:04:50,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (31), 6 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 283 [2023-12-19 22:04:50,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:04:51,142 INFO L225 Difference]: With dead ends: 160315 [2023-12-19 22:04:51,142 INFO L226 Difference]: Without dead ends: 94537 [2023-12-19 22:04:51,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:04:51,569 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 1468 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 3527 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 3845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 3527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:04:51,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 1799 Invalid, 3845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 3527 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 22:04:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94537 states. [2023-12-19 22:05:02,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94537 to 66533. [2023-12-19 22:05:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66533 states, 53003 states have (on average 1.5714582193460747) internal successors, (83292), 54518 states have internal predecessors, (83292), 8813 states have call successors, (8813), 3968 states have call predecessors, (8813), 4716 states have return successors, (16388), 8945 states have call predecessors, (16388), 8753 states have call successors, (16388) [2023-12-19 22:05:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66533 states to 66533 states and 108493 transitions. [2023-12-19 22:05:02,950 INFO L78 Accepts]: Start accepts. Automaton has 66533 states and 108493 transitions. Word has length 283 [2023-12-19 22:05:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:05:02,950 INFO L495 AbstractCegarLoop]: Abstraction has 66533 states and 108493 transitions. [2023-12-19 22:05:02,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (31), 6 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-19 22:05:02,950 INFO L276 IsEmpty]: Start isEmpty. Operand 66533 states and 108493 transitions. [2023-12-19 22:05:02,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-12-19 22:05:02,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:05:02,959 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:02,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-19 22:05:02,959 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:05:02,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:05:02,959 INFO L85 PathProgramCache]: Analyzing trace with hash -551311785, now seen corresponding path program 1 times [2023-12-19 22:05:02,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:05:02,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571231863] [2023-12-19 22:05:02,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:05:02,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:05:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:05:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:05:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:05:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:05:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:05:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:05:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:05:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:05:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:05:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:05:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:05:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:05:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 22:05:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:05:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:05:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:05:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:05:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-19 22:05:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-19 22:05:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:05:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-19 22:05:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:05:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-19 22:05:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:05:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:05:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:05:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-19 22:05:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:05:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-19 22:05:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-19 22:05:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-12-19 22:05:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-12-19 22:05:03,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:05:03,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571231863] [2023-12-19 22:05:03,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571231863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:05:03,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:05:03,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 22:05:03,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103233087] [2023-12-19 22:05:03,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:05:03,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 22:05:03,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:05:03,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 22:05:03,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:05:03,652 INFO L87 Difference]: Start difference. First operand 66533 states and 108493 transitions. Second operand has 13 states, 12 states have (on average 13.166666666666666) internal successors, (158), 8 states have internal predecessors, (158), 3 states have call successors, (31), 6 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-12-19 22:05:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:05:30,897 INFO L93 Difference]: Finished difference Result 159614 states and 284678 transitions. [2023-12-19 22:05:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 22:05:30,897 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 13.166666666666666) internal successors, (158), 8 states have internal predecessors, (158), 3 states have call successors, (31), 6 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 286 [2023-12-19 22:05:30,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:05:31,625 INFO L225 Difference]: With dead ends: 159614 [2023-12-19 22:05:31,625 INFO L226 Difference]: Without dead ends: 93140 [2023-12-19 22:05:32,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=174, Invalid=756, Unknown=0, NotChecked=0, Total=930 [2023-12-19 22:05:32,253 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 2625 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 8050 mSolverCounterSat, 769 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2706 SdHoareTripleChecker+Valid, 3962 SdHoareTripleChecker+Invalid, 8819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 769 IncrementalHoareTripleChecker+Valid, 8050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:05:32,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2706 Valid, 3962 Invalid, 8819 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [769 Valid, 8050 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-19 22:05:32,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93140 states. [2023-12-19 22:05:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93140 to 64552. [2023-12-19 22:05:43,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64552 states, 51223 states have (on average 1.565136754973352) internal successors, (80171), 52737 states have internal predecessors, (80171), 8702 states have call successors, (8702), 3879 states have call predecessors, (8702), 4626 states have return successors, (16018), 8834 states have call predecessors, (16018), 8642 states have call successors, (16018) [2023-12-19 22:05:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64552 states to 64552 states and 104891 transitions. [2023-12-19 22:05:43,928 INFO L78 Accepts]: Start accepts. Automaton has 64552 states and 104891 transitions. Word has length 286 [2023-12-19 22:05:43,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:05:43,928 INFO L495 AbstractCegarLoop]: Abstraction has 64552 states and 104891 transitions. [2023-12-19 22:05:43,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 13.166666666666666) internal successors, (158), 8 states have internal predecessors, (158), 3 states have call successors, (31), 6 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-12-19 22:05:43,928 INFO L276 IsEmpty]: Start isEmpty. Operand 64552 states and 104891 transitions. [2023-12-19 22:05:43,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-19 22:05:43,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:05:43,932 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:43,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-19 22:05:43,932 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:05:43,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:05:43,932 INFO L85 PathProgramCache]: Analyzing trace with hash 810898949, now seen corresponding path program 1 times [2023-12-19 22:05:43,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:05:43,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874609989] [2023-12-19 22:05:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:05:43,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:05:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:05:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:05:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:05:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:05:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:05:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:05:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:05:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:05:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:05:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:05:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:05:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:05:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:05:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:05:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 22:05:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:05:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:05:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-19 22:05:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-19 22:05:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-19 22:05:44,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:05:44,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874609989] [2023-12-19 22:05:44,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874609989] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:05:44,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783067908] [2023-12-19 22:05:44,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:05:44,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:05:44,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:05:44,338 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:05:44,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-19 22:05:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:44,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:05:44,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:05:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-19 22:05:44,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:05:44,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783067908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:05:44,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:05:44,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-19 22:05:44,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982232840] [2023-12-19 22:05:44,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:05:44,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:05:44,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:05:44,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:05:44,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:05:44,677 INFO L87 Difference]: Start difference. First operand 64552 states and 104891 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-19 22:05:58,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:05:58,991 INFO L93 Difference]: Finished difference Result 137961 states and 229784 transitions. [2023-12-19 22:05:58,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:05:58,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 187 [2023-12-19 22:05:58,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:05:59,319 INFO L225 Difference]: With dead ends: 137961 [2023-12-19 22:05:59,320 INFO L226 Difference]: Without dead ends: 74533 [2023-12-19 22:05:59,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:05:59,860 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 191 mSDsluCounter, 5575 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 6750 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:05:59,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 6750 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:05:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74533 states. [2023-12-19 22:06:10,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74533 to 65104. [2023-12-19 22:06:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65104 states, 51653 states have (on average 1.5604321143012023) internal successors, (80601), 53227 states have internal predecessors, (80601), 8702 states have call successors, (8702), 3879 states have call predecessors, (8702), 4748 states have return successors, (16201), 8896 states have call predecessors, (16201), 8642 states have call successors, (16201) [2023-12-19 22:06:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65104 states to 65104 states and 105504 transitions. [2023-12-19 22:06:10,755 INFO L78 Accepts]: Start accepts. Automaton has 65104 states and 105504 transitions. Word has length 187 [2023-12-19 22:06:10,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:06:10,756 INFO L495 AbstractCegarLoop]: Abstraction has 65104 states and 105504 transitions. [2023-12-19 22:06:10,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-19 22:06:10,756 INFO L276 IsEmpty]: Start isEmpty. Operand 65104 states and 105504 transitions. [2023-12-19 22:06:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-19 22:06:10,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:06:10,760 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:06:10,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-19 22:06:10,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-19 22:06:10,966 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:06:10,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:06:10,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1957422760, now seen corresponding path program 1 times [2023-12-19 22:06:10,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:06:10,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402387007] [2023-12-19 22:06:10,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:06:10,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:06:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:06:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:06:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:06:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:06:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:06:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:06:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:06:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:06:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:06:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:06:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:06:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 22:06:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:06:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 22:06:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 22:06:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 22:06:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-19 22:06:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-19 22:06:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:06:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:06:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-19 22:06:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:06:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-12-19 22:06:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:06:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-19 22:06:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-19 22:06:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-12-19 22:06:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-19 22:06:11,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:06:11,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402387007] [2023-12-19 22:06:11,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402387007] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:06:11,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901124604] [2023-12-19 22:06:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:06:11,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:06:11,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:06:11,786 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:06:11,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-19 22:06:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:06:12,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:06:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-19 22:06:12,158 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:06:12,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901124604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:06:12,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:06:12,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-12-19 22:06:12,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182572931] [2023-12-19 22:06:12,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:06:12,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:06:12,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:06:12,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:06:12,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:06:12,159 INFO L87 Difference]: Start difference. First operand 65104 states and 105504 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32)