/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 22:23:17,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 22:23:17,702 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 22:23:17,706 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 22:23:17,707 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 22:23:17,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 22:23:17,730 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 22:23:17,730 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 22:23:17,731 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 22:23:17,733 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 22:23:17,733 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 22:23:17,734 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 22:23:17,734 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 22:23:17,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 22:23:17,736 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 22:23:17,736 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 22:23:17,736 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 22:23:17,736 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 22:23:17,736 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 22:23:17,737 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 22:23:17,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 22:23:17,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 22:23:17,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 22:23:17,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 22:23:17,738 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 22:23:17,739 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 22:23:17,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 22:23:17,739 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 22:23:17,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 22:23:17,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 22:23:17,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 22:23:17,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 22:23:17,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:23:17,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 22:23:17,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 22:23:17,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 22:23:17,741 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 22:23:17,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 22:23:17,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 22:23:17,742 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 22:23:17,742 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 22:23:17,742 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 22:23:17,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 22:23:17,742 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 22:23:17,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 22:23:17,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 22:23:17,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 22:23:17,937 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 22:23:17,937 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 22:23:17,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product03.cil.c [2023-12-19 22:23:18,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 22:23:19,163 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 22:23:19,164 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product03.cil.c [2023-12-19 22:23:19,179 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddf18d27d/4548d76a06b54be79e2b22091f02b69b/FLAG6ae820a54 [2023-12-19 22:23:19,188 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddf18d27d/4548d76a06b54be79e2b22091f02b69b [2023-12-19 22:23:19,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 22:23:19,191 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 22:23:19,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 22:23:19,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 22:23:19,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 22:23:19,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:23:19" (1/1) ... [2023-12-19 22:23:19,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@702ff1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:19, skipping insertion in model container [2023-12-19 22:23:19,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:23:19" (1/1) ... [2023-12-19 22:23:19,244 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 22:23:19,424 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2023-12-19 22:23:19,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:23:19,578 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 22:23:19,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2023-12-19 22:23:19,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [716] [2023-12-19 22:23:19,585 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [837] [2023-12-19 22:23:19,585 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [851] [2023-12-19 22:23:19,585 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1217] [2023-12-19 22:23:19,585 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1226] [2023-12-19 22:23:19,585 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1264] [2023-12-19 22:23:19,585 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1622] [2023-12-19 22:23:19,585 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [3131] [2023-12-19 22:23:19,585 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3312] [2023-12-19 22:23:19,608 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2023-12-19 22:23:19,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:23:19,651 INFO L206 MainTranslator]: Completed translation [2023-12-19 22:23:19,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:19 WrapperNode [2023-12-19 22:23:19,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 22:23:19,652 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 22:23:19,652 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 22:23:19,652 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 22:23:19,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:19" (1/1) ... [2023-12-19 22:23:19,686 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:19" (1/1) ... [2023-12-19 22:23:19,728 INFO L138 Inliner]: procedures = 92, calls = 336, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1070 [2023-12-19 22:23:19,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 22:23:19,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 22:23:19,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 22:23:19,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 22:23:19,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:19" (1/1) ... [2023-12-19 22:23:19,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:19" (1/1) ... [2023-12-19 22:23:19,750 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:19" (1/1) ... [2023-12-19 22:23:19,773 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 22:23:19,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:19" (1/1) ... [2023-12-19 22:23:19,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:19" (1/1) ... [2023-12-19 22:23:19,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:19" (1/1) ... [2023-12-19 22:23:19,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:19" (1/1) ... [2023-12-19 22:23:19,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:19" (1/1) ... [2023-12-19 22:23:19,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:19" (1/1) ... [2023-12-19 22:23:19,838 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 22:23:19,839 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 22:23:19,839 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 22:23:19,839 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 22:23:19,840 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:19" (1/1) ... [2023-12-19 22:23:19,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:23:19,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:23:19,894 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 22:23:19,902 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 22:23:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 22:23:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-12-19 22:23:19,924 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-12-19 22:23:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-19 22:23:19,924 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-19 22:23:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-12-19 22:23:19,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-12-19 22:23:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-19 22:23:19,925 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-19 22:23:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-19 22:23:19,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-19 22:23:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-19 22:23:19,925 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-19 22:23:19,926 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-19 22:23:19,926 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-19 22:23:19,926 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-12-19 22:23:19,926 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-12-19 22:23:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-19 22:23:19,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-19 22:23:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-19 22:23:19,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-19 22:23:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-19 22:23:19,929 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-19 22:23:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-19 22:23:19,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-19 22:23:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-12-19 22:23:19,930 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-12-19 22:23:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-19 22:23:19,932 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-19 22:23:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-19 22:23:19,933 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-19 22:23:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-19 22:23:19,933 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-19 22:23:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-19 22:23:19,933 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-19 22:23:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-19 22:23:19,933 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-19 22:23:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2023-12-19 22:23:19,933 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2023-12-19 22:23:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 22:23:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 22:23:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 22:23:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 22:23:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 22:23:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 22:23:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-19 22:23:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-19 22:23:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-19 22:23:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-19 22:23:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-19 22:23:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-19 22:23:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-19 22:23:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-19 22:23:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-19 22:23:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-19 22:23:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-19 22:23:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-19 22:23:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-19 22:23:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-19 22:23:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-19 22:23:19,935 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-19 22:23:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-19 22:23:19,935 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-19 22:23:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-19 22:23:19,935 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-19 22:23:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 22:23:19,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 22:23:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-19 22:23:19,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-19 22:23:20,087 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 22:23:20,088 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 22:23:20,770 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 22:23:20,842 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 22:23:20,842 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 22:23:20,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:23:20 BoogieIcfgContainer [2023-12-19 22:23:20,842 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 22:23:20,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 22:23:20,845 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 22:23:20,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 22:23:20,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 10:23:19" (1/3) ... [2023-12-19 22:23:20,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf68d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:23:20, skipping insertion in model container [2023-12-19 22:23:20,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:23:19" (2/3) ... [2023-12-19 22:23:20,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf68d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:23:20, skipping insertion in model container [2023-12-19 22:23:20,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:23:20" (3/3) ... [2023-12-19 22:23:20,849 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product03.cil.c [2023-12-19 22:23:20,861 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 22:23:20,861 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 22:23:20,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 22:23:20,923 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;@9eebb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 22:23:20,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 22:23:20,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 525 states, 406 states have (on average 1.729064039408867) internal successors, (702), 427 states have internal predecessors, (702), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-19 22:23:20,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 22:23:20,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:23:20,955 INFO L195 NwaCegarLoop]: trace histogram [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 22:23:20,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:23:20,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:23:20,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2030237672, now seen corresponding path program 1 times [2023-12-19 22:23:20,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:23:20,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580256392] [2023-12-19 22:23:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:20,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:23:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:21,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:23:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:21,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:21,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:23:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:21,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:23:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:21,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:22,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:22,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:22,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:22,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:23:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:22,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:22,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:22,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 22:23:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:22,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:23:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:22,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 22:23:22,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:23:22,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580256392] [2023-12-19 22:23:22,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580256392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:23:22,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:23:22,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-19 22:23:22,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601959307] [2023-12-19 22:23:22,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:23:22,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 22:23:22,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:23:22,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 22:23:22,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:23:22,312 INFO L87 Difference]: Start difference. First operand has 525 states, 406 states have (on average 1.729064039408867) internal successors, (702), 427 states have internal predecessors, (702), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 16 states, 15 states have (on average 3.8) internal successors, (57), 10 states have internal predecessors, (57), 3 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 22:23:39,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:23:39,186 INFO L93 Difference]: Finished difference Result 2016 states and 3604 transitions. [2023-12-19 22:23:39,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 22:23:39,189 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.8) internal successors, (57), 10 states have internal predecessors, (57), 3 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 90 [2023-12-19 22:23:39,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:23:39,208 INFO L225 Difference]: With dead ends: 2016 [2023-12-19 22:23:39,208 INFO L226 Difference]: Without dead ends: 1497 [2023-12-19 22:23:39,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2023-12-19 22:23:39,223 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 4301 mSDsluCounter, 7112 mSDsCounter, 0 mSdLazyCounter, 18786 mSolverCounterSat, 1571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4323 SdHoareTripleChecker+Valid, 7957 SdHoareTripleChecker+Invalid, 20357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1571 IncrementalHoareTripleChecker+Valid, 18786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:23:39,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4323 Valid, 7957 Invalid, 20357 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1571 Valid, 18786 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2023-12-19 22:23:39,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2023-12-19 22:23:39,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1106. [2023-12-19 22:23:39,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 831 states have (on average 1.6847172081829123) internal successors, (1400), 871 states have internal predecessors, (1400), 223 states have call successors, (223), 42 states have call predecessors, (223), 51 states have return successors, (293), 223 states have call predecessors, (293), 218 states have call successors, (293) [2023-12-19 22:23:39,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1916 transitions. [2023-12-19 22:23:39,473 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1916 transitions. Word has length 90 [2023-12-19 22:23:39,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:23:39,473 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1916 transitions. [2023-12-19 22:23:39,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.8) internal successors, (57), 10 states have internal predecessors, (57), 3 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 22:23:39,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1916 transitions. [2023-12-19 22:23:39,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 22:23:39,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:23:39,483 INFO L195 NwaCegarLoop]: trace histogram [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 22:23:39,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 22:23:39,483 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:23:39,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:23:39,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1432749081, now seen corresponding path program 1 times [2023-12-19 22:23:39,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:23:39,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368374456] [2023-12-19 22:23:39,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:39,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:23:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:39,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:23:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:39,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:39,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:23:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:23:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:40,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:40,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:40,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:40,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:40,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:23:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:40,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:40,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:40,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:23:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:23:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 22:23:40,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:23:40,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368374456] [2023-12-19 22:23:40,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368374456] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:23:40,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550002850] [2023-12-19 22:23:40,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:40,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:23:40,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:23:40,176 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 22:23:40,182 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 22:23:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:40,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:23:40,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:23:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 22:23:40,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:23:40,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550002850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:23:40,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:23:40,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2023-12-19 22:23:40,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308429742] [2023-12-19 22:23:40,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:23:40,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:23:40,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:23:40,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:23:40,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:23:40,485 INFO L87 Difference]: Start difference. First operand 1106 states and 1916 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:23:40,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:23:40,804 INFO L93 Difference]: Finished difference Result 3162 states and 5526 transitions. [2023-12-19 22:23:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:23:40,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 93 [2023-12-19 22:23:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:23:40,820 INFO L225 Difference]: With dead ends: 3162 [2023-12-19 22:23:40,821 INFO L226 Difference]: Without dead ends: 2129 [2023-12-19 22:23:40,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:23:40,828 INFO L413 NwaCegarLoop]: 1482 mSDtfsCounter, 757 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:23:40,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 2337 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:23:40,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2023-12-19 22:23:41,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 2100. [2023-12-19 22:23:41,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 1579 states have (on average 1.6846105129829005) internal successors, (2660), 1650 states have internal predecessors, (2660), 426 states have call successors, (426), 76 states have call predecessors, (426), 94 states have return successors, (579), 435 states have call predecessors, (579), 421 states have call successors, (579) [2023-12-19 22:23:41,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 3665 transitions. [2023-12-19 22:23:41,140 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 3665 transitions. Word has length 93 [2023-12-19 22:23:41,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:23:41,141 INFO L495 AbstractCegarLoop]: Abstraction has 2100 states and 3665 transitions. [2023-12-19 22:23:41,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:23:41,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 3665 transitions. [2023-12-19 22:23:41,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 22:23:41,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:23:41,148 INFO L195 NwaCegarLoop]: trace histogram [3, 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 22:23:41,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 22:23:41,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:23:41,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:23:41,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:23:41,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1601203966, now seen corresponding path program 1 times [2023-12-19 22:23:41,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:23:41,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281958993] [2023-12-19 22:23:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:41,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:23:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:41,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:23:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:41,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:41,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:23:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:41,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:23:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:41,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:41,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:41,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:41,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:41,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:23:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:41,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:41,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:41,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:41,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:23:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:41,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:23:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:23:41,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:23:41,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281958993] [2023-12-19 22:23:41,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281958993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:23:41,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:23:41,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:23:41,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873381484] [2023-12-19 22:23:41,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:23:41,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:23:41,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:23:41,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:23:41,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:23:41,849 INFO L87 Difference]: Start difference. First operand 2100 states and 3665 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:23:46,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:23:46,458 INFO L93 Difference]: Finished difference Result 5035 states and 9039 transitions. [2023-12-19 22:23:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:23:46,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 93 [2023-12-19 22:23:46,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:23:46,478 INFO L225 Difference]: With dead ends: 5035 [2023-12-19 22:23:46,478 INFO L226 Difference]: Without dead ends: 2947 [2023-12-19 22:23:46,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:23:46,489 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1349 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 3249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:23:46,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 1668 Invalid, 3249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 22:23:46,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2023-12-19 22:23:46,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 2220. [2023-12-19 22:23:46,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1671 states have (on average 1.6822262118491922) internal successors, (2811), 1742 states have internal predecessors, (2811), 450 states have call successors, (450), 76 states have call predecessors, (450), 98 states have return successors, (611), 459 states have call predecessors, (611), 445 states have call successors, (611) [2023-12-19 22:23:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 3872 transitions. [2023-12-19 22:23:46,789 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 3872 transitions. Word has length 93 [2023-12-19 22:23:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:23:46,789 INFO L495 AbstractCegarLoop]: Abstraction has 2220 states and 3872 transitions. [2023-12-19 22:23:46,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:23:46,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 3872 transitions. [2023-12-19 22:23:46,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 22:23:46,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:23:46,794 INFO L195 NwaCegarLoop]: trace histogram [3, 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 22:23:46,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 22:23:46,794 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:23:46,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:23:46,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1293880425, now seen corresponding path program 1 times [2023-12-19 22:23:46,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:23:46,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741548740] [2023-12-19 22:23:46,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:46,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:23:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:46,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:23:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:46,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:23:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:47,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:23:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:47,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:47,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:47,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:47,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:47,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:23:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:47,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:47,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:47,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:47,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:23:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:47,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:23:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:23:47,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:23:47,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741548740] [2023-12-19 22:23:47,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741548740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:23:47,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:23:47,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:23:47,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697163580] [2023-12-19 22:23:47,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:23:47,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:23:47,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:23:47,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:23:47,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:23:47,283 INFO L87 Difference]: Start difference. First operand 2220 states and 3872 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:23:51,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:23:51,643 INFO L93 Difference]: Finished difference Result 5155 states and 9246 transitions. [2023-12-19 22:23:51,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:23:51,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 94 [2023-12-19 22:23:51,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:23:51,659 INFO L225 Difference]: With dead ends: 5155 [2023-12-19 22:23:51,660 INFO L226 Difference]: Without dead ends: 2947 [2023-12-19 22:23:51,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:23:51,669 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1353 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 2783 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 2783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:23:51,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1432 Valid, 1661 Invalid, 3133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 2783 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 22:23:51,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2023-12-19 22:23:51,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 2220. [2023-12-19 22:23:51,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1671 states have (on average 1.6816277678037104) internal successors, (2810), 1742 states have internal predecessors, (2810), 450 states have call successors, (450), 76 states have call predecessors, (450), 98 states have return successors, (611), 459 states have call predecessors, (611), 445 states have call successors, (611) [2023-12-19 22:23:51,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 3871 transitions. [2023-12-19 22:23:51,998 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 3871 transitions. Word has length 94 [2023-12-19 22:23:51,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:23:51,998 INFO L495 AbstractCegarLoop]: Abstraction has 2220 states and 3871 transitions. [2023-12-19 22:23:51,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:23:51,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 3871 transitions. [2023-12-19 22:23:52,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 22:23:52,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:23:52,005 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:23:52,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 22:23:52,006 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:23:52,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:23:52,006 INFO L85 PathProgramCache]: Analyzing trace with hash -771833997, now seen corresponding path program 1 times [2023-12-19 22:23:52,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:23:52,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573231464] [2023-12-19 22:23:52,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:52,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:23:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:23:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:52,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 22:23:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:52,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:23:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:52,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:52,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:52,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:23:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:52,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:52,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:52,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:23:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:52,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:23:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 22:23:52,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:23:52,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573231464] [2023-12-19 22:23:52,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573231464] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:23:52,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313018773] [2023-12-19 22:23:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:52,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:23:52,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:23:52,618 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 22:23:52,620 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 22:23:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:52,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:23:52,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:23:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 22:23:52,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:23:52,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313018773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:23:52,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:23:52,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-12-19 22:23:52,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642262159] [2023-12-19 22:23:52,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:23:52,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:23:52,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:23:52,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:23:52,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:23:52,926 INFO L87 Difference]: Start difference. First operand 2220 states and 3871 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:23:53,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:23:53,245 INFO L93 Difference]: Finished difference Result 4428 states and 7727 transitions. [2023-12-19 22:23:53,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 22:23:53,245 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 95 [2023-12-19 22:23:53,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:23:53,255 INFO L225 Difference]: With dead ends: 4428 [2023-12-19 22:23:53,255 INFO L226 Difference]: Without dead ends: 2220 [2023-12-19 22:23:53,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:23:53,263 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 8 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:23:53,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2554 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:23:53,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2023-12-19 22:23:53,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2220. [2023-12-19 22:23:53,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1671 states have (on average 1.6810293237582286) internal successors, (2809), 1742 states have internal predecessors, (2809), 450 states have call successors, (450), 76 states have call predecessors, (450), 98 states have return successors, (611), 459 states have call predecessors, (611), 445 states have call successors, (611) [2023-12-19 22:23:53,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 3870 transitions. [2023-12-19 22:23:53,518 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 3870 transitions. Word has length 95 [2023-12-19 22:23:53,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:23:53,518 INFO L495 AbstractCegarLoop]: Abstraction has 2220 states and 3870 transitions. [2023-12-19 22:23:53,518 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:23:53,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 3870 transitions. [2023-12-19 22:23:53,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-19 22:23:53,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:23:53,522 INFO L195 NwaCegarLoop]: trace histogram [3, 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 22:23:53,531 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 22:23:53,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:23:53,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:23:53,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:23:53,737 INFO L85 PathProgramCache]: Analyzing trace with hash -301392269, now seen corresponding path program 1 times [2023-12-19 22:23:53,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:23:53,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143575919] [2023-12-19 22:23:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:53,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:23:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:23:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:53,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:53,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:23:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:23:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:23:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:23:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:23:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:54,259 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:23:54,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:23:54,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143575919] [2023-12-19 22:23:54,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143575919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:23:54,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:23:54,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:23:54,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926172052] [2023-12-19 22:23:54,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:23:54,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:23:54,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:23:54,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:23:54,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:23:54,261 INFO L87 Difference]: Start difference. First operand 2220 states and 3870 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:23:58,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:23:58,324 INFO L93 Difference]: Finished difference Result 5155 states and 9244 transitions. [2023-12-19 22:23:58,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:23:58,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 96 [2023-12-19 22:23:58,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:23:58,339 INFO L225 Difference]: With dead ends: 5155 [2023-12-19 22:23:58,339 INFO L226 Difference]: Without dead ends: 2947 [2023-12-19 22:23:58,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:23:58,348 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 1766 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 2701 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 3214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 2701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:23:58,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1845 Valid, 1593 Invalid, 3214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 2701 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:23:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2023-12-19 22:23:58,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 2220. [2023-12-19 22:23:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1671 states have (on average 1.680430879712747) internal successors, (2808), 1742 states have internal predecessors, (2808), 450 states have call successors, (450), 76 states have call predecessors, (450), 98 states have return successors, (611), 459 states have call predecessors, (611), 445 states have call successors, (611) [2023-12-19 22:23:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 3869 transitions. [2023-12-19 22:23:58,684 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 3869 transitions. Word has length 96 [2023-12-19 22:23:58,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:23:58,684 INFO L495 AbstractCegarLoop]: Abstraction has 2220 states and 3869 transitions. [2023-12-19 22:23:58,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:23:58,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 3869 transitions. [2023-12-19 22:23:58,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-19 22:23:58,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:23:58,688 INFO L195 NwaCegarLoop]: trace histogram [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 22:23:58,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 22:23:58,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:23:58,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:23:58,689 INFO L85 PathProgramCache]: Analyzing trace with hash 686163215, now seen corresponding path program 1 times [2023-12-19 22:23:58,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:23:58,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431711738] [2023-12-19 22:23:58,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:58,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:23:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:23:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:58,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:23:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:23:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:23:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:23:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:23:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:23:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 22:23:59,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:23:59,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431711738] [2023-12-19 22:23:59,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431711738] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:23:59,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692620053] [2023-12-19 22:23:59,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:23:59,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:23:59,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:23:59,243 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 22:23:59,265 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 22:23:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:23:59,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:23:59,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:23:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 22:23:59,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:23:59,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692620053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:23:59,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:23:59,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-12-19 22:23:59,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100214551] [2023-12-19 22:23:59,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:23:59,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:23:59,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:23:59,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:23:59,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:23:59,504 INFO L87 Difference]: Start difference. First operand 2220 states and 3869 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:23:59,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:23:59,897 INFO L93 Difference]: Finished difference Result 4388 states and 7650 transitions. [2023-12-19 22:23:59,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 22:23:59,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 97 [2023-12-19 22:23:59,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:23:59,907 INFO L225 Difference]: With dead ends: 4388 [2023-12-19 22:23:59,907 INFO L226 Difference]: Without dead ends: 2220 [2023-12-19 22:23:59,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:23:59,916 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 102 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:23:59,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 2375 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:23:59,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2023-12-19 22:24:00,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2220. [2023-12-19 22:24:00,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1671 states have (on average 1.677438659485338) internal successors, (2803), 1742 states have internal predecessors, (2803), 450 states have call successors, (450), 76 states have call predecessors, (450), 98 states have return successors, (611), 459 states have call predecessors, (611), 445 states have call successors, (611) [2023-12-19 22:24:00,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 3864 transitions. [2023-12-19 22:24:00,175 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 3864 transitions. Word has length 97 [2023-12-19 22:24:00,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:00,176 INFO L495 AbstractCegarLoop]: Abstraction has 2220 states and 3864 transitions. [2023-12-19 22:24:00,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:24:00,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 3864 transitions. [2023-12-19 22:24:00,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 22:24:00,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:00,180 INFO L195 NwaCegarLoop]: trace histogram [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 22:24:00,186 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 22:24:00,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:24:00,387 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:00,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:00,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1666365688, now seen corresponding path program 1 times [2023-12-19 22:24:00,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:00,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898936470] [2023-12-19 22:24:00,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:00,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:24:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:00,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 22:24:01,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:01,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898936470] [2023-12-19 22:24:01,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898936470] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:24:01,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291331201] [2023-12-19 22:24:01,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:01,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:24:01,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:24:01,001 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 22:24:01,028 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 22:24:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:01,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:24:01,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:24:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 22:24:01,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:24:01,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291331201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:01,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:24:01,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-12-19 22:24:01,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215563149] [2023-12-19 22:24:01,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:01,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:24:01,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:01,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:24:01,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:24:01,273 INFO L87 Difference]: Start difference. First operand 2220 states and 3864 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:24:01,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:01,620 INFO L93 Difference]: Finished difference Result 4388 states and 7645 transitions. [2023-12-19 22:24:01,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 22:24:01,621 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2023-12-19 22:24:01,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:01,631 INFO L225 Difference]: With dead ends: 4388 [2023-12-19 22:24:01,631 INFO L226 Difference]: Without dead ends: 2220 [2023-12-19 22:24:01,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:24:01,642 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 96 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:01,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 2375 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:24:01,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2023-12-19 22:24:01,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2220. [2023-12-19 22:24:01,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1671 states have (on average 1.6744464392579295) internal successors, (2798), 1742 states have internal predecessors, (2798), 450 states have call successors, (450), 76 states have call predecessors, (450), 98 states have return successors, (611), 459 states have call predecessors, (611), 445 states have call successors, (611) [2023-12-19 22:24:01,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 3859 transitions. [2023-12-19 22:24:01,931 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 3859 transitions. Word has length 98 [2023-12-19 22:24:01,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:01,933 INFO L495 AbstractCegarLoop]: Abstraction has 2220 states and 3859 transitions. [2023-12-19 22:24:01,933 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:24:01,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 3859 transitions. [2023-12-19 22:24:01,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 22:24:01,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:01,937 INFO L195 NwaCegarLoop]: trace histogram [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 22:24:01,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 22:24:02,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:24:02,145 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:02,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:02,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1706496652, now seen corresponding path program 1 times [2023-12-19 22:24:02,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:02,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535929774] [2023-12-19 22:24:02,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:02,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:02,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:02,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:02,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:02,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 22:24:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:02,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:02,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:02,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:02,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:02,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:02,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:02,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:02,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:02,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:02,735 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 22:24:02,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:02,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535929774] [2023-12-19 22:24:02,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535929774] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:24:02,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507756555] [2023-12-19 22:24:02,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:02,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:24:02,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:24:02,737 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 22:24:02,739 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 22:24:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:02,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:24:02,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:24:03,017 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 22:24:03,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:24:03,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507756555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:03,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:24:03,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-12-19 22:24:03,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116449479] [2023-12-19 22:24:03,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:03,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:24:03,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:03,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:24:03,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:24:03,020 INFO L87 Difference]: Start difference. First operand 2220 states and 3859 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:24:03,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:03,381 INFO L93 Difference]: Finished difference Result 4388 states and 7640 transitions. [2023-12-19 22:24:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 22:24:03,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2023-12-19 22:24:03,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:03,392 INFO L225 Difference]: With dead ends: 4388 [2023-12-19 22:24:03,392 INFO L226 Difference]: Without dead ends: 2220 [2023-12-19 22:24:03,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:24:03,400 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 90 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:03,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 2375 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:24:03,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2023-12-19 22:24:03,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2220. [2023-12-19 22:24:03,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1671 states have (on average 1.6714542190305206) internal successors, (2793), 1742 states have internal predecessors, (2793), 450 states have call successors, (450), 76 states have call predecessors, (450), 98 states have return successors, (611), 459 states have call predecessors, (611), 445 states have call successors, (611) [2023-12-19 22:24:03,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 3854 transitions. [2023-12-19 22:24:03,680 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 3854 transitions. Word has length 99 [2023-12-19 22:24:03,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:03,680 INFO L495 AbstractCegarLoop]: Abstraction has 2220 states and 3854 transitions. [2023-12-19 22:24:03,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:24:03,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 3854 transitions. [2023-12-19 22:24:03,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 22:24:03,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:03,684 INFO L195 NwaCegarLoop]: trace histogram [3, 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 22:24:03,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 22:24:03,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:24:03,891 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:03,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:03,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2012020964, now seen corresponding path program 1 times [2023-12-19 22:24:03,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:03,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276595070] [2023-12-19 22:24:03,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:03,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:04,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:04,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:04,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:24:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:04,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:04,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:04,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:04,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:04,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:04,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:04,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:04,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:04,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:04,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:04,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276595070] [2023-12-19 22:24:04,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276595070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:04,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:04,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:04,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545425274] [2023-12-19 22:24:04,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:04,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:04,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:04,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:04,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:04,346 INFO L87 Difference]: Start difference. First operand 2220 states and 3854 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:08,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:08,247 INFO L93 Difference]: Finished difference Result 5115 states and 9153 transitions. [2023-12-19 22:24:08,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:24:08,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 100 [2023-12-19 22:24:08,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:08,261 INFO L225 Difference]: With dead ends: 5115 [2023-12-19 22:24:08,262 INFO L226 Difference]: Without dead ends: 2947 [2023-12-19 22:24:08,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:24:08,267 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1434 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:08,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1656 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2632 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 22:24:08,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2023-12-19 22:24:08,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 2220. [2023-12-19 22:24:08,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1671 states have (on average 1.668461998803112) internal successors, (2788), 1742 states have internal predecessors, (2788), 450 states have call successors, (450), 76 states have call predecessors, (450), 98 states have return successors, (611), 459 states have call predecessors, (611), 445 states have call successors, (611) [2023-12-19 22:24:08,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 3849 transitions. [2023-12-19 22:24:08,547 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 3849 transitions. Word has length 100 [2023-12-19 22:24:08,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:08,547 INFO L495 AbstractCegarLoop]: Abstraction has 2220 states and 3849 transitions. [2023-12-19 22:24:08,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:08,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 3849 transitions. [2023-12-19 22:24:08,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 22:24:08,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:08,551 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:24:08,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 22:24:08,551 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:08,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:08,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1502682658, now seen corresponding path program 1 times [2023-12-19 22:24:08,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:08,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818592881] [2023-12-19 22:24:08,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:08,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:08,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:08,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:08,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:08,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:24:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:09,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:09,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:09,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:09,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:09,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:09,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:09,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:09,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:09,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 22:24:09,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:09,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818592881] [2023-12-19 22:24:09,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818592881] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:24:09,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408330528] [2023-12-19 22:24:09,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:09,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:24:09,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:24:09,120 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 22:24:09,133 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 22:24:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:09,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:24:09,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:24:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 22:24:09,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:24:09,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408330528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:09,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:24:09,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2023-12-19 22:24:09,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107692053] [2023-12-19 22:24:09,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:09,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:24:09,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:09,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:24:09,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:24:09,430 INFO L87 Difference]: Start difference. First operand 2220 states and 3849 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 22:24:09,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:09,809 INFO L93 Difference]: Finished difference Result 4392 states and 7637 transitions. [2023-12-19 22:24:09,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:24:09,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 100 [2023-12-19 22:24:09,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:09,819 INFO L225 Difference]: With dead ends: 4392 [2023-12-19 22:24:09,819 INFO L226 Difference]: Without dead ends: 2234 [2023-12-19 22:24:09,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2023-12-19 22:24:09,826 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 87 mSDsluCounter, 4862 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 5682 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:09,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 5682 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:24:09,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2023-12-19 22:24:10,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2232. [2023-12-19 22:24:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 1680 states have (on average 1.667857142857143) internal successors, (2802), 1753 states have internal predecessors, (2802), 451 states have call successors, (451), 76 states have call predecessors, (451), 100 states have return successors, (614), 460 states have call predecessors, (614), 446 states have call successors, (614) [2023-12-19 22:24:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 3867 transitions. [2023-12-19 22:24:10,112 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 3867 transitions. Word has length 100 [2023-12-19 22:24:10,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:10,112 INFO L495 AbstractCegarLoop]: Abstraction has 2232 states and 3867 transitions. [2023-12-19 22:24:10,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 22:24:10,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 3867 transitions. [2023-12-19 22:24:10,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 22:24:10,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:10,115 INFO L195 NwaCegarLoop]: trace histogram [3, 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 22:24:10,121 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 22:24:10,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:24:10,316 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:10,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:10,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1585581050, now seen corresponding path program 1 times [2023-12-19 22:24:10,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:10,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11293171] [2023-12-19 22:24:10,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:10,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:24:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:10,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:10,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11293171] [2023-12-19 22:24:10,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11293171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:10,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:10,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:10,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621962509] [2023-12-19 22:24:10,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:10,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:10,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:10,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:10,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:10,725 INFO L87 Difference]: Start difference. First operand 2232 states and 3867 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:15,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:15,583 INFO L93 Difference]: Finished difference Result 5060 states and 9039 transitions. [2023-12-19 22:24:15,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:24:15,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 100 [2023-12-19 22:24:15,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:15,598 INFO L225 Difference]: With dead ends: 5060 [2023-12-19 22:24:15,598 INFO L226 Difference]: Without dead ends: 2967 [2023-12-19 22:24:15,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:24:15,605 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 983 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:15,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 1715 Invalid, 3035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 2833 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 22:24:15,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2023-12-19 22:24:15,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2232. [2023-12-19 22:24:15,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 1680 states have (on average 1.6672619047619048) internal successors, (2801), 1753 states have internal predecessors, (2801), 451 states have call successors, (451), 76 states have call predecessors, (451), 100 states have return successors, (614), 460 states have call predecessors, (614), 446 states have call successors, (614) [2023-12-19 22:24:15,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 3866 transitions. [2023-12-19 22:24:15,923 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 3866 transitions. Word has length 100 [2023-12-19 22:24:15,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:15,923 INFO L495 AbstractCegarLoop]: Abstraction has 2232 states and 3866 transitions. [2023-12-19 22:24:15,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:15,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 3866 transitions. [2023-12-19 22:24:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 22:24:15,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:15,926 INFO L195 NwaCegarLoop]: trace histogram [3, 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 22:24:15,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 22:24:15,927 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:15,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:15,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2074495519, now seen corresponding path program 1 times [2023-12-19 22:24:15,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:15,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222517003] [2023-12-19 22:24:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:15,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:24:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:24:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:24:16,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:16,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222517003] [2023-12-19 22:24:16,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222517003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:16,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:16,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:16,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766868763] [2023-12-19 22:24:16,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:16,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:16,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:16,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:16,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:16,410 INFO L87 Difference]: Start difference. First operand 2232 states and 3866 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:20,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:20,205 INFO L93 Difference]: Finished difference Result 5143 states and 9191 transitions. [2023-12-19 22:24:20,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:24:20,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2023-12-19 22:24:20,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:20,218 INFO L225 Difference]: With dead ends: 5143 [2023-12-19 22:24:20,218 INFO L226 Difference]: Without dead ends: 2967 [2023-12-19 22:24:20,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:24:20,224 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1836 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:20,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 1610 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:24:20,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2023-12-19 22:24:20,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2232. [2023-12-19 22:24:20,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 1680 states have (on average 1.6642857142857144) internal successors, (2796), 1753 states have internal predecessors, (2796), 451 states have call successors, (451), 76 states have call predecessors, (451), 100 states have return successors, (614), 460 states have call predecessors, (614), 446 states have call successors, (614) [2023-12-19 22:24:20,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 3861 transitions. [2023-12-19 22:24:20,547 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 3861 transitions. Word has length 101 [2023-12-19 22:24:20,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:20,547 INFO L495 AbstractCegarLoop]: Abstraction has 2232 states and 3861 transitions. [2023-12-19 22:24:20,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:20,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 3861 transitions. [2023-12-19 22:24:20,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 22:24:20,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:20,550 INFO L195 NwaCegarLoop]: trace histogram [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 22:24:20,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 22:24:20,550 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:20,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:20,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1464069182, now seen corresponding path program 1 times [2023-12-19 22:24:20,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:20,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408686216] [2023-12-19 22:24:20,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:20,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:20,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:20,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:20,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:24:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:20,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:24:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:24:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:24:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:24:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 22:24:21,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:21,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408686216] [2023-12-19 22:24:21,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408686216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:24:21,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168911738] [2023-12-19 22:24:21,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:21,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:24:21,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:24:21,096 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 22:24:21,100 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 22:24:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:21,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:24:21,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:24:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 22:24:21,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:24:21,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168911738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:21,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:24:21,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2023-12-19 22:24:21,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462886563] [2023-12-19 22:24:21,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:21,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:24:21,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:21,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:24:21,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:24:21,422 INFO L87 Difference]: Start difference. First operand 2232 states and 3861 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:22,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:22,062 INFO L93 Difference]: Finished difference Result 4404 states and 7779 transitions. [2023-12-19 22:24:22,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:24:22,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2023-12-19 22:24:22,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:22,072 INFO L225 Difference]: With dead ends: 4404 [2023-12-19 22:24:22,072 INFO L226 Difference]: Without dead ends: 2256 [2023-12-19 22:24:22,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:24:22,078 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 812 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:22,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 2083 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 22:24:22,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2023-12-19 22:24:22,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2248. [2023-12-19 22:24:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 1696 states have (on average 1.669811320754717) internal successors, (2832), 1771 states have internal predecessors, (2832), 451 states have call successors, (451), 80 states have call predecessors, (451), 100 states have return successors, (564), 454 states have call predecessors, (564), 446 states have call successors, (564) [2023-12-19 22:24:22,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 3847 transitions. [2023-12-19 22:24:22,387 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 3847 transitions. Word has length 101 [2023-12-19 22:24:22,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:22,388 INFO L495 AbstractCegarLoop]: Abstraction has 2248 states and 3847 transitions. [2023-12-19 22:24:22,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:22,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 3847 transitions. [2023-12-19 22:24:22,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 22:24:22,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:22,391 INFO L195 NwaCegarLoop]: trace histogram [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 22:24:22,400 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 22:24:22,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:24:22,598 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:22,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:22,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2083495018, now seen corresponding path program 1 times [2023-12-19 22:24:22,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:22,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513726029] [2023-12-19 22:24:22,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:22,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:22,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:22,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:22,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:24:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:23,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:23,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:23,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:23,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:24:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:23,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:24:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:23,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:23,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:23,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:24:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:23,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:24:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 22:24:23,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:23,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513726029] [2023-12-19 22:24:23,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513726029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:23,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:23,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:23,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23315017] [2023-12-19 22:24:23,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:23,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:23,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:23,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:23,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:23,123 INFO L87 Difference]: Start difference. First operand 2248 states and 3847 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:24:27,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:27,487 INFO L93 Difference]: Finished difference Result 4223 states and 7491 transitions. [2023-12-19 22:24:27,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:24:27,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2023-12-19 22:24:27,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:27,500 INFO L225 Difference]: With dead ends: 4223 [2023-12-19 22:24:27,500 INFO L226 Difference]: Without dead ends: 3000 [2023-12-19 22:24:27,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:24:27,504 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 1414 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:27,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1645 Invalid, 2982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 2623 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:24:27,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2023-12-19 22:24:27,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2251. [2023-12-19 22:24:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 1699 states have (on average 1.6680400235432606) internal successors, (2834), 1774 states have internal predecessors, (2834), 451 states have call successors, (451), 80 states have call predecessors, (451), 100 states have return successors, (564), 454 states have call predecessors, (564), 446 states have call successors, (564) [2023-12-19 22:24:27,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3849 transitions. [2023-12-19 22:24:27,850 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3849 transitions. Word has length 104 [2023-12-19 22:24:27,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:27,850 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3849 transitions. [2023-12-19 22:24:27,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:24:27,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3849 transitions. [2023-12-19 22:24:27,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-19 22:24:27,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:27,853 INFO L195 NwaCegarLoop]: trace histogram [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 22:24:27,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 22:24:27,853 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:27,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:27,854 INFO L85 PathProgramCache]: Analyzing trace with hash -341461180, now seen corresponding path program 1 times [2023-12-19 22:24:27,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:27,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3351557] [2023-12-19 22:24:27,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:27,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:27,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:28,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:28,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:28,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:24:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:28,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:28,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:24:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:28,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:24:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:28,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:28,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:28,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 22:24:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:24:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 22:24:28,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:28,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3351557] [2023-12-19 22:24:28,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3351557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:28,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:28,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:28,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332543551] [2023-12-19 22:24:28,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:28,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:28,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:28,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:28,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:28,287 INFO L87 Difference]: Start difference. First operand 2251 states and 3849 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:24:32,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:32,941 INFO L93 Difference]: Finished difference Result 4229 states and 7493 transitions. [2023-12-19 22:24:32,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:24:32,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2023-12-19 22:24:32,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:32,953 INFO L225 Difference]: With dead ends: 4229 [2023-12-19 22:24:32,954 INFO L226 Difference]: Without dead ends: 3006 [2023-12-19 22:24:32,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:24:32,958 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1391 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 3083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:32,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1668 Invalid, 3083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 2732 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 22:24:32,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2023-12-19 22:24:33,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 2255. [2023-12-19 22:24:33,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 1703 states have (on average 1.6658837345860247) internal successors, (2837), 1778 states have internal predecessors, (2837), 451 states have call successors, (451), 80 states have call predecessors, (451), 100 states have return successors, (564), 454 states have call predecessors, (564), 446 states have call successors, (564) [2023-12-19 22:24:33,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3852 transitions. [2023-12-19 22:24:33,303 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3852 transitions. Word has length 107 [2023-12-19 22:24:33,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:33,303 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 3852 transitions. [2023-12-19 22:24:33,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:24:33,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3852 transitions. [2023-12-19 22:24:33,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-19 22:24:33,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:33,306 INFO L195 NwaCegarLoop]: trace histogram [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 22:24:33,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 22:24:33,306 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:33,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:33,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1189359223, now seen corresponding path program 1 times [2023-12-19 22:24:33,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:33,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163903236] [2023-12-19 22:24:33,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:33,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:33,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:33,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:33,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:33,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:24:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:33,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:33,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:33,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:33,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:24:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:33,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:24:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:33,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:33,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:33,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:24:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:33,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:24:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 22:24:33,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:33,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163903236] [2023-12-19 22:24:33,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163903236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:33,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:33,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:33,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035535309] [2023-12-19 22:24:33,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:33,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:33,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:33,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:33,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:33,775 INFO L87 Difference]: Start difference. First operand 2255 states and 3852 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:24:37,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:37,879 INFO L93 Difference]: Finished difference Result 3933 states and 6856 transitions. [2023-12-19 22:24:37,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:24:37,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2023-12-19 22:24:37,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:37,886 INFO L225 Difference]: With dead ends: 3933 [2023-12-19 22:24:37,886 INFO L226 Difference]: Without dead ends: 1670 [2023-12-19 22:24:37,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:24:37,890 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1309 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 2752 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 2752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:37,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 1685 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 2752 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 22:24:37,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2023-12-19 22:24:38,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1045. [2023-12-19 22:24:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 810 states have (on average 1.6592592592592592) internal successors, (1344), 840 states have internal predecessors, (1344), 186 states have call successors, (186), 42 states have call predecessors, (186), 48 states have return successors, (218), 186 states have call predecessors, (218), 181 states have call successors, (218) [2023-12-19 22:24:38,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1748 transitions. [2023-12-19 22:24:38,069 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1748 transitions. Word has length 105 [2023-12-19 22:24:38,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:38,071 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1748 transitions. [2023-12-19 22:24:38,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:24:38,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1748 transitions. [2023-12-19 22:24:38,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 22:24:38,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:38,073 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:24:38,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 22:24:38,073 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:38,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:38,073 INFO L85 PathProgramCache]: Analyzing trace with hash 525981996, now seen corresponding path program 1 times [2023-12-19 22:24:38,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:38,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070256917] [2023-12-19 22:24:38,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:38,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:38,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:38,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:38,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-19 22:24:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:38,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:38,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:38,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:38,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:24:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:38,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:24:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:38,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:38,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:38,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 22:24:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:38,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:24:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 22:24:38,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:38,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070256917] [2023-12-19 22:24:38,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070256917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:38,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:38,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:24:38,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266076416] [2023-12-19 22:24:38,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:38,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:24:38,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:38,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:24:38,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:24:38,535 INFO L87 Difference]: Start difference. First operand 1045 states and 1748 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:24:43,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:43,030 INFO L93 Difference]: Finished difference Result 2409 states and 4146 transitions. [2023-12-19 22:24:43,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:24:43,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2023-12-19 22:24:43,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:43,035 INFO L225 Difference]: With dead ends: 2409 [2023-12-19 22:24:43,035 INFO L226 Difference]: Without dead ends: 1423 [2023-12-19 22:24:43,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:24:43,037 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 952 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 2756 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 2962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:43,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 1715 Invalid, 2962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 2756 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 22:24:43,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2023-12-19 22:24:43,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1050. [2023-12-19 22:24:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 815 states have (on average 1.6552147239263804) internal successors, (1349), 845 states have internal predecessors, (1349), 186 states have call successors, (186), 42 states have call predecessors, (186), 48 states have return successors, (218), 186 states have call predecessors, (218), 181 states have call successors, (218) [2023-12-19 22:24:43,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1753 transitions. [2023-12-19 22:24:43,199 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1753 transitions. Word has length 108 [2023-12-19 22:24:43,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:43,199 INFO L495 AbstractCegarLoop]: Abstraction has 1050 states and 1753 transitions. [2023-12-19 22:24:43,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:24:43,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1753 transitions. [2023-12-19 22:24:43,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-19 22:24:43,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:43,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:24:43,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 22:24:43,201 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:43,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:43,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1094190385, now seen corresponding path program 1 times [2023-12-19 22:24:43,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:43,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821448387] [2023-12-19 22:24:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:43,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:43,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:43,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:43,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:24:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:43,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:43,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:43,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:24:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:43,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:24:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:43,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:43,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:43,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 22:24:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:43,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:24:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:43,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 22:24:43,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:43,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821448387] [2023-12-19 22:24:43,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821448387] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:24:43,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306098790] [2023-12-19 22:24:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:43,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:24:43,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:24:43,744 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 22:24:43,745 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 22:24:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:43,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:24:43,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:24:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 22:24:44,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:24:44,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306098790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:44,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:24:44,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2023-12-19 22:24:44,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340480416] [2023-12-19 22:24:44,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:44,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:24:44,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:44,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:24:44,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:24:44,060 INFO L87 Difference]: Start difference. First operand 1050 states and 1753 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:24:44,552 INFO L93 Difference]: Finished difference Result 2049 states and 3479 transitions. [2023-12-19 22:24:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:24:44,552 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2023-12-19 22:24:44,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:24:44,555 INFO L225 Difference]: With dead ends: 2049 [2023-12-19 22:24:44,555 INFO L226 Difference]: Without dead ends: 1070 [2023-12-19 22:24:44,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:24:44,558 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 788 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:24:44,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 2053 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 22:24:44,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2023-12-19 22:24:44,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1070. [2023-12-19 22:24:44,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 831 states have (on average 1.654632972322503) internal successors, (1375), 863 states have internal predecessors, (1375), 186 states have call successors, (186), 44 states have call predecessors, (186), 52 states have return successors, (220), 186 states have call predecessors, (220), 181 states have call successors, (220) [2023-12-19 22:24:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1781 transitions. [2023-12-19 22:24:44,734 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1781 transitions. Word has length 109 [2023-12-19 22:24:44,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:24:44,734 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1781 transitions. [2023-12-19 22:24:44,734 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:24:44,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1781 transitions. [2023-12-19 22:24:44,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-19 22:24:44,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:24:44,736 INFO L195 NwaCegarLoop]: trace histogram [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 22:24:44,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 22:24:44,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:24:44,942 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:24:44,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:24:44,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1895476544, now seen corresponding path program 1 times [2023-12-19 22:24:44,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:24:44,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761188655] [2023-12-19 22:24:44,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:24:44,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:24:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:24:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:24:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:24:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:24:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:24:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:24:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 22:24:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:24:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:24:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 22:24:45,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:24:45,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761188655] [2023-12-19 22:24:45,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761188655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:24:45,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:24:45,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-19 22:24:45,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801775348] [2023-12-19 22:24:45,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:24:45,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 22:24:45,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:24:45,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 22:24:45,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:24:45,538 INFO L87 Difference]: Start difference. First operand 1070 states and 1781 transitions. Second operand has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-19 22:25:00,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:00,427 INFO L93 Difference]: Finished difference Result 3859 states and 6865 transitions. [2023-12-19 22:25:00,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 22:25:00,428 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 109 [2023-12-19 22:25:00,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:00,437 INFO L225 Difference]: With dead ends: 3859 [2023-12-19 22:25:00,437 INFO L226 Difference]: Without dead ends: 2860 [2023-12-19 22:25:00,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=283, Invalid=1199, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 22:25:00,441 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 5653 mSDsluCounter, 5672 mSDsCounter, 0 mSdLazyCounter, 15848 mSolverCounterSat, 2120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5653 SdHoareTripleChecker+Valid, 6545 SdHoareTripleChecker+Invalid, 17968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2120 IncrementalHoareTripleChecker+Valid, 15848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:00,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5653 Valid, 6545 Invalid, 17968 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2120 Valid, 15848 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2023-12-19 22:25:00,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2023-12-19 22:25:00,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2322. [2023-12-19 22:25:00,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 1753 states have (on average 1.654877353108956) internal successors, (2901), 1830 states have internal predecessors, (2901), 450 states have call successors, (450), 84 states have call predecessors, (450), 118 states have return successors, (639), 465 states have call predecessors, (639), 445 states have call successors, (639) [2023-12-19 22:25:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3990 transitions. [2023-12-19 22:25:00,886 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3990 transitions. Word has length 109 [2023-12-19 22:25:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:00,886 INFO L495 AbstractCegarLoop]: Abstraction has 2322 states and 3990 transitions. [2023-12-19 22:25:00,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-19 22:25:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3990 transitions. [2023-12-19 22:25:00,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 22:25:00,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:00,889 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:25:00,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 22:25:00,889 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:00,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1848265580, now seen corresponding path program 1 times [2023-12-19 22:25:00,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:00,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557409843] [2023-12-19 22:25:00,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:00,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:01,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:01,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:01,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:01,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:01,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:01,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:01,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:01,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:01,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:25:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:01,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:01,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 22:25:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:01,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:25:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 22:25:01,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:01,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557409843] [2023-12-19 22:25:01,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557409843] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:25:01,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894928548] [2023-12-19 22:25:01,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:01,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:25:01,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:25:01,508 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 22:25:01,510 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 22:25:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:01,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 1420 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:25:01,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:25:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 22:25:01,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:25:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894928548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:01,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:25:01,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-12-19 22:25:01,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582952712] [2023-12-19 22:25:01,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:01,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:25:01,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:01,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:25:01,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:25:01,860 INFO L87 Difference]: Start difference. First operand 2322 states and 3990 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:25:02,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:02,637 INFO L93 Difference]: Finished difference Result 4594 states and 7980 transitions. [2023-12-19 22:25:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:25:02,637 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 110 [2023-12-19 22:25:02,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:02,643 INFO L225 Difference]: With dead ends: 4594 [2023-12-19 22:25:02,643 INFO L226 Difference]: Without dead ends: 2350 [2023-12-19 22:25:02,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:25:02,648 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 759 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:02,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 2053 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 22:25:02,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2023-12-19 22:25:03,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2346. [2023-12-19 22:25:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 1773 states have (on average 1.658770445572476) internal successors, (2941), 1856 states have internal predecessors, (2941), 450 states have call successors, (450), 88 states have call predecessors, (450), 122 states have return successors, (623), 459 states have call predecessors, (623), 445 states have call successors, (623) [2023-12-19 22:25:03,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 4014 transitions. [2023-12-19 22:25:03,053 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 4014 transitions. Word has length 110 [2023-12-19 22:25:03,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:03,053 INFO L495 AbstractCegarLoop]: Abstraction has 2346 states and 4014 transitions. [2023-12-19 22:25:03,053 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:25:03,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 4014 transitions. [2023-12-19 22:25:03,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-19 22:25:03,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:03,056 INFO L195 NwaCegarLoop]: trace histogram [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 22:25:03,063 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 22:25:03,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:25:03,263 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:03,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:03,263 INFO L85 PathProgramCache]: Analyzing trace with hash -89591853, now seen corresponding path program 1 times [2023-12-19 22:25:03,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:03,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320253052] [2023-12-19 22:25:03,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:03,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:03,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:03,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:03,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:03,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:03,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:03,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:03,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:03,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:25:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:03,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:03,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:03,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:25:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:03,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:25:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 22:25:03,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:03,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320253052] [2023-12-19 22:25:03,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320253052] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:25:03,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437590420] [2023-12-19 22:25:03,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:03,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:25:03,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:25:03,864 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 22:25:03,871 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 22:25:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:04,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 1420 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:25:04,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:25:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:25:04,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:25:04,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437590420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:04,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:25:04,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2023-12-19 22:25:04,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170692420] [2023-12-19 22:25:04,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:04,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:25:04,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:04,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:25:04,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:25:04,241 INFO L87 Difference]: Start difference. First operand 2346 states and 4014 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-19 22:25:04,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:04,936 INFO L93 Difference]: Finished difference Result 2517 states and 4330 transitions. [2023-12-19 22:25:04,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:25:04,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 111 [2023-12-19 22:25:04,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:04,951 INFO L225 Difference]: With dead ends: 2517 [2023-12-19 22:25:04,951 INFO L226 Difference]: Without dead ends: 2498 [2023-12-19 22:25:04,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:25:04,953 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 853 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:04,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1455 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 22:25:04,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2023-12-19 22:25:05,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 2356. [2023-12-19 22:25:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 1783 states have (on average 1.6550757150869322) internal successors, (2951), 1866 states have internal predecessors, (2951), 450 states have call successors, (450), 88 states have call predecessors, (450), 122 states have return successors, (623), 459 states have call predecessors, (623), 445 states have call successors, (623) [2023-12-19 22:25:05,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 4024 transitions. [2023-12-19 22:25:05,393 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 4024 transitions. Word has length 111 [2023-12-19 22:25:05,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:05,393 INFO L495 AbstractCegarLoop]: Abstraction has 2356 states and 4024 transitions. [2023-12-19 22:25:05,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-19 22:25:05,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 4024 transitions. [2023-12-19 22:25:05,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 22:25:05,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:05,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:25:05,402 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 22:25:05,602 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,SelfDestructingSolverStorable21 [2023-12-19 22:25:05,602 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:05,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:05,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1485543627, now seen corresponding path program 1 times [2023-12-19 22:25:05,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:05,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775166039] [2023-12-19 22:25:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:05,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:05,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:06,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:06,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:06,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:06,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:06,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:06,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:25:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:06,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:06,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:06,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:25:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:06,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:25:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:06,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 22:25:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:25:06,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:06,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775166039] [2023-12-19 22:25:06,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775166039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:06,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:25:06,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-19 22:25:06,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322692286] [2023-12-19 22:25:06,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:06,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 22:25:06,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:06,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 22:25:06,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:25:06,254 INFO L87 Difference]: Start difference. First operand 2356 states and 4024 transitions. Second operand has 16 states, 15 states have (on average 5.133333333333334) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (14), 5 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-19 22:25:21,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:21,791 INFO L93 Difference]: Finished difference Result 7579 states and 14003 transitions. [2023-12-19 22:25:21,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-19 22:25:21,791 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.133333333333334) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (14), 5 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 5 states have call successors, (13) Word has length 116 [2023-12-19 22:25:21,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:21,815 INFO L225 Difference]: With dead ends: 7579 [2023-12-19 22:25:21,816 INFO L226 Difference]: Without dead ends: 5301 [2023-12-19 22:25:21,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=344, Invalid=1378, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 22:25:21,826 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 5358 mSDsluCounter, 6650 mSDsCounter, 0 mSdLazyCounter, 16878 mSolverCounterSat, 1824 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5364 SdHoareTripleChecker+Valid, 7671 SdHoareTripleChecker+Invalid, 18702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1824 IncrementalHoareTripleChecker+Valid, 16878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:21,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5364 Valid, 7671 Invalid, 18702 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1824 Valid, 16878 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2023-12-19 22:25:21,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2023-12-19 22:25:22,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 4016. [2023-12-19 22:25:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4016 states, 2958 states have (on average 1.6484110885733603) internal successors, (4876), 3111 states have internal predecessors, (4876), 868 states have call successors, (868), 130 states have call predecessors, (868), 189 states have return successors, (1317), 886 states have call predecessors, (1317), 863 states have call successors, (1317) [2023-12-19 22:25:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 7061 transitions. [2023-12-19 22:25:22,780 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 7061 transitions. Word has length 116 [2023-12-19 22:25:22,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:22,780 INFO L495 AbstractCegarLoop]: Abstraction has 4016 states and 7061 transitions. [2023-12-19 22:25:22,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.133333333333334) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (14), 5 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-19 22:25:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 7061 transitions. [2023-12-19 22:25:22,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 22:25:22,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:22,785 INFO L195 NwaCegarLoop]: trace histogram [3, 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 22:25:22,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 22:25:22,785 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:22,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:22,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1206338746, now seen corresponding path program 1 times [2023-12-19 22:25:22,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:22,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264011402] [2023-12-19 22:25:22,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:22,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:22,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:22,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:22,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:23,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:23,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:23,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:23,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:23,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:25:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:23,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:23,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:23,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:23,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:25:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:23,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:25:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:23,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:25:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 22:25:23,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:23,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264011402] [2023-12-19 22:25:23,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264011402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:23,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:25:23,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:25:23,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702536695] [2023-12-19 22:25:23,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:23,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:25:23,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:23,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:25:23,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:25:23,222 INFO L87 Difference]: Start difference. First operand 4016 states and 7061 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 22:25:28,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:28,255 INFO L93 Difference]: Finished difference Result 7652 states and 13804 transitions. [2023-12-19 22:25:28,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:25:28,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2023-12-19 22:25:28,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:28,274 INFO L225 Difference]: With dead ends: 7652 [2023-12-19 22:25:28,274 INFO L226 Difference]: Without dead ends: 4949 [2023-12-19 22:25:28,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:25:28,286 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 1752 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 3063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:28,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 1686 Invalid, 3063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:25:28,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2023-12-19 22:25:29,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4022. [2023-12-19 22:25:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4022 states, 2964 states have (on average 1.647098515519568) internal successors, (4882), 3117 states have internal predecessors, (4882), 868 states have call successors, (868), 130 states have call predecessors, (868), 189 states have return successors, (1317), 886 states have call predecessors, (1317), 863 states have call successors, (1317) [2023-12-19 22:25:29,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4022 states to 4022 states and 7067 transitions. [2023-12-19 22:25:29,192 INFO L78 Accepts]: Start accepts. Automaton has 4022 states and 7067 transitions. Word has length 117 [2023-12-19 22:25:29,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:29,192 INFO L495 AbstractCegarLoop]: Abstraction has 4022 states and 7067 transitions. [2023-12-19 22:25:29,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 22:25:29,193 INFO L276 IsEmpty]: Start isEmpty. Operand 4022 states and 7067 transitions. [2023-12-19 22:25:29,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 22:25:29,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:29,197 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:25:29,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 22:25:29,198 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:29,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:29,198 INFO L85 PathProgramCache]: Analyzing trace with hash 41960781, now seen corresponding path program 1 times [2023-12-19 22:25:29,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:29,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332906021] [2023-12-19 22:25:29,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:29,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-19 22:25:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:25:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 22:25:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 22:25:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 22:25:29,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:29,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332906021] [2023-12-19 22:25:29,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332906021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:29,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:25:29,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 22:25:29,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455337204] [2023-12-19 22:25:29,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:29,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 22:25:29,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:29,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 22:25:29,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:25:29,674 INFO L87 Difference]: Start difference. First operand 4022 states and 7067 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:25:37,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:37,788 INFO L93 Difference]: Finished difference Result 10580 states and 19606 transitions. [2023-12-19 22:25:37,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 22:25:37,788 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2023-12-19 22:25:37,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:37,820 INFO L225 Difference]: With dead ends: 10580 [2023-12-19 22:25:37,820 INFO L226 Difference]: Without dead ends: 6661 [2023-12-19 22:25:37,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2023-12-19 22:25:37,834 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 2301 mSDsluCounter, 2864 mSDsCounter, 0 mSdLazyCounter, 4801 mSolverCounterSat, 759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 3548 SdHoareTripleChecker+Invalid, 5560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 759 IncrementalHoareTripleChecker+Valid, 4801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:37,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2311 Valid, 3548 Invalid, 5560 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [759 Valid, 4801 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-19 22:25:37,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6661 states. [2023-12-19 22:25:38,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6661 to 4052. [2023-12-19 22:25:38,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4052 states, 2988 states have (on average 1.64190093708166) internal successors, (4906), 3141 states have internal predecessors, (4906), 868 states have call successors, (868), 130 states have call predecessors, (868), 195 states have return successors, (1325), 892 states have call predecessors, (1325), 863 states have call successors, (1325) [2023-12-19 22:25:38,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4052 states to 4052 states and 7099 transitions. [2023-12-19 22:25:38,839 INFO L78 Accepts]: Start accepts. Automaton has 4052 states and 7099 transitions. Word has length 123 [2023-12-19 22:25:38,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:38,839 INFO L495 AbstractCegarLoop]: Abstraction has 4052 states and 7099 transitions. [2023-12-19 22:25:38,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:25:38,839 INFO L276 IsEmpty]: Start isEmpty. Operand 4052 states and 7099 transitions. [2023-12-19 22:25:38,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-19 22:25:38,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:38,844 INFO L195 NwaCegarLoop]: trace histogram [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 22:25:38,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 22:25:38,844 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:38,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:38,844 INFO L85 PathProgramCache]: Analyzing trace with hash 129104082, now seen corresponding path program 1 times [2023-12-19 22:25:38,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:38,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325404854] [2023-12-19 22:25:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:38,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:38,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:39,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:39,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:39,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:25:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:39,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:39,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:39,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:39,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:25:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:39,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:39,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:39,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:25:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:39,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:25:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:39,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 22:25:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:25:39,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:39,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325404854] [2023-12-19 22:25:39,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325404854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:39,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:25:39,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 22:25:39,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195520946] [2023-12-19 22:25:39,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:39,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 22:25:39,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:39,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 22:25:39,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:25:39,347 INFO L87 Difference]: Start difference. First operand 4052 states and 7099 transitions. Second operand has 10 states, 9 states have (on average 9.333333333333334) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 22:25:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:45,413 INFO L93 Difference]: Finished difference Result 6317 states and 11356 transitions. [2023-12-19 22:25:45,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 22:25:45,414 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.333333333333334) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2023-12-19 22:25:45,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:45,428 INFO L225 Difference]: With dead ends: 6317 [2023-12-19 22:25:45,428 INFO L226 Difference]: Without dead ends: 3316 [2023-12-19 22:25:45,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:25:45,437 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 1334 mSDsluCounter, 2476 mSDsCounter, 0 mSdLazyCounter, 4870 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 5220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 4870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:45,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1410 Valid, 2909 Invalid, 5220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 4870 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-19 22:25:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2023-12-19 22:25:45,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 1072. [2023-12-19 22:25:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 835 states have (on average 1.652694610778443) internal successors, (1380), 873 states have internal predecessors, (1380), 180 states have call successors, (180), 46 states have call predecessors, (180), 56 states have return successors, (216), 176 states have call predecessors, (216), 175 states have call successors, (216) [2023-12-19 22:25:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1776 transitions. [2023-12-19 22:25:45,737 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1776 transitions. Word has length 122 [2023-12-19 22:25:45,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:45,737 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1776 transitions. [2023-12-19 22:25:45,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.333333333333334) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 22:25:45,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1776 transitions. [2023-12-19 22:25:45,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-19 22:25:45,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:45,739 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:25:45,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 22:25:45,739 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:45,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:45,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2015509713, now seen corresponding path program 1 times [2023-12-19 22:25:45,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:45,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694666331] [2023-12-19 22:25:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:45,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:45,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:45,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:45,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:46,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:46,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:46,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:46,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:46,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:46,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:46,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:25:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:46,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:46,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:46,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:25:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:46,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:25:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:46,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:25:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:46,255 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:25:46,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:46,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694666331] [2023-12-19 22:25:46,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694666331] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:25:46,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25366741] [2023-12-19 22:25:46,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:46,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:25:46,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:25:46,256 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 22:25:46,258 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 22:25:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:46,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 22:25:46,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:25:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 22:25:46,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:25:46,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25366741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:46,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:25:46,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2023-12-19 22:25:46,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861557314] [2023-12-19 22:25:46,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:46,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:25:46,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:46,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:25:46,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:25:46,537 INFO L87 Difference]: Start difference. First operand 1072 states and 1776 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 22:25:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:46,807 INFO L93 Difference]: Finished difference Result 1091 states and 1800 transitions. [2023-12-19 22:25:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:25:46,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 126 [2023-12-19 22:25:46,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:46,811 INFO L225 Difference]: With dead ends: 1091 [2023-12-19 22:25:46,811 INFO L226 Difference]: Without dead ends: 1076 [2023-12-19 22:25:46,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:25:46,812 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 34 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3179 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:46,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3179 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:25:46,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2023-12-19 22:25:47,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1072. [2023-12-19 22:25:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 835 states have (on average 1.6502994011976049) internal successors, (1378), 873 states have internal predecessors, (1378), 180 states have call successors, (180), 46 states have call predecessors, (180), 56 states have return successors, (216), 176 states have call predecessors, (216), 175 states have call successors, (216) [2023-12-19 22:25:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1774 transitions. [2023-12-19 22:25:47,067 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1774 transitions. Word has length 126 [2023-12-19 22:25:47,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:47,067 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1774 transitions. [2023-12-19 22:25:47,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 22:25:47,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1774 transitions. [2023-12-19 22:25:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-19 22:25:47,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:47,068 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2023-12-19 22:25:47,077 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 22:25:47,269 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,SelfDestructingSolverStorable26 [2023-12-19 22:25:47,269 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:47,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:47,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1194587196, now seen corresponding path program 1 times [2023-12-19 22:25:47,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:47,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217259482] [2023-12-19 22:25:47,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:47,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:25:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:25:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:25:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:25:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:25:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:47,818 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 22:25:47,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:47,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217259482] [2023-12-19 22:25:47,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217259482] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:25:47,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690279188] [2023-12-19 22:25:47,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:47,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:25:47,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:25:47,820 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 22:25:47,864 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 22:25:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:48,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:25:48,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:25:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 22:25:48,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:25:48,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690279188] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:48,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:25:48,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-12-19 22:25:48,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283874934] [2023-12-19 22:25:48,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:48,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:25:48,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:48,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:25:48,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:25:48,150 INFO L87 Difference]: Start difference. First operand 1072 states and 1774 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:25:48,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:48,697 INFO L93 Difference]: Finished difference Result 2083 states and 3524 transitions. [2023-12-19 22:25:48,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:25:48,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 135 [2023-12-19 22:25:48,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:48,700 INFO L225 Difference]: With dead ends: 2083 [2023-12-19 22:25:48,701 INFO L226 Difference]: Without dead ends: 1076 [2023-12-19 22:25:48,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:25:48,704 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 760 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:48,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 2005 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 22:25:48,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2023-12-19 22:25:48,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1076. [2023-12-19 22:25:48,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 837 states have (on average 1.6415770609318996) internal successors, (1374), 877 states have internal predecessors, (1374), 180 states have call successors, (180), 46 states have call predecessors, (180), 58 states have return successors, (218), 176 states have call predecessors, (218), 175 states have call successors, (218) [2023-12-19 22:25:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1772 transitions. [2023-12-19 22:25:48,962 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1772 transitions. Word has length 135 [2023-12-19 22:25:48,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:48,964 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1772 transitions. [2023-12-19 22:25:48,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 22:25:48,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1772 transitions. [2023-12-19 22:25:48,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-19 22:25:48,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:48,967 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2023-12-19 22:25:48,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-19 22:25:49,173 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,SelfDestructingSolverStorable27 [2023-12-19 22:25:49,173 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:49,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:49,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2144540828, now seen corresponding path program 1 times [2023-12-19 22:25:49,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:49,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550499542] [2023-12-19 22:25:49,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:49,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:25:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:25:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:25:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:25:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:25:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 22:25:49,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:49,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550499542] [2023-12-19 22:25:49,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550499542] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:25:49,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760848414] [2023-12-19 22:25:49,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:49,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:25:49,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:25:49,714 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 22:25:49,718 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 22:25:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:49,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 22:25:49,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:25:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 22:25:50,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:25:50,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760848414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:50,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:25:50,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 16 [2023-12-19 22:25:50,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481835700] [2023-12-19 22:25:50,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:50,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:25:50,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:50,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:25:50,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:25:50,068 INFO L87 Difference]: Start difference. First operand 1076 states and 1772 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-19 22:25:51,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:51,500 INFO L93 Difference]: Finished difference Result 2664 states and 4406 transitions. [2023-12-19 22:25:51,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:25:51,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 135 [2023-12-19 22:25:51,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:51,505 INFO L225 Difference]: With dead ends: 2664 [2023-12-19 22:25:51,505 INFO L226 Difference]: Without dead ends: 1653 [2023-12-19 22:25:51,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:25:51,508 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 1873 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:51,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1974 Valid, 936 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 22:25:51,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2023-12-19 22:25:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1607. [2023-12-19 22:25:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1193 states have (on average 1.6026823134953898) internal successors, (1912), 1268 states have internal predecessors, (1912), 323 states have call successors, (323), 66 states have call predecessors, (323), 90 states have return successors, (386), 320 states have call predecessors, (386), 318 states have call successors, (386) [2023-12-19 22:25:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2621 transitions. [2023-12-19 22:25:51,971 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2621 transitions. Word has length 135 [2023-12-19 22:25:51,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:51,972 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2621 transitions. [2023-12-19 22:25:51,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-19 22:25:51,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2621 transitions. [2023-12-19 22:25:51,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-19 22:25:51,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:51,973 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2023-12-19 22:25:51,980 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 22:25:52,174 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,SelfDestructingSolverStorable28 [2023-12-19 22:25:52,174 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:52,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:52,174 INFO L85 PathProgramCache]: Analyzing trace with hash -934272742, now seen corresponding path program 1 times [2023-12-19 22:25:52,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:52,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726455968] [2023-12-19 22:25:52,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:52,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:25:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:25:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:25:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:25:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:25:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 22:25:52,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:52,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726455968] [2023-12-19 22:25:52,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726455968] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:25:52,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109280655] [2023-12-19 22:25:52,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:52,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:25:52,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:25:52,762 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 22:25:52,786 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 22:25:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:52,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 22:25:52,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:25:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 22:25:53,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:25:53,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109280655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:53,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:25:53,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 18 [2023-12-19 22:25:53,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970222153] [2023-12-19 22:25:53,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:53,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:25:53,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:53,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:25:53,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:25:53,109 INFO L87 Difference]: Start difference. First operand 1607 states and 2621 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2023-12-19 22:25:55,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:25:55,793 INFO L93 Difference]: Finished difference Result 3597 states and 5954 transitions. [2023-12-19 22:25:55,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 22:25:55,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 135 [2023-12-19 22:25:55,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:25:55,800 INFO L225 Difference]: With dead ends: 3597 [2023-12-19 22:25:55,800 INFO L226 Difference]: Without dead ends: 2056 [2023-12-19 22:25:55,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 22:25:55,804 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 2821 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 3988 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2897 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 4530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:25:55,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2897 Valid, 2606 Invalid, 4530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3988 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 22:25:55,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2023-12-19 22:25:56,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1911. [2023-12-19 22:25:56,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1425 states have (on average 1.6070175438596492) internal successors, (2290), 1511 states have internal predecessors, (2290), 379 states have call successors, (379), 75 states have call predecessors, (379), 106 states have return successors, (462), 372 states have call predecessors, (462), 374 states have call successors, (462) [2023-12-19 22:25:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 3131 transitions. [2023-12-19 22:25:56,368 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 3131 transitions. Word has length 135 [2023-12-19 22:25:56,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:25:56,368 INFO L495 AbstractCegarLoop]: Abstraction has 1911 states and 3131 transitions. [2023-12-19 22:25:56,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2023-12-19 22:25:56,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 3131 transitions. [2023-12-19 22:25:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 22:25:56,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:25:56,370 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2023-12-19 22:25:56,379 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 22:25:56,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:25:56,571 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:25:56,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:25:56,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2020029730, now seen corresponding path program 1 times [2023-12-19 22:25:56,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:25:56,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698423002] [2023-12-19 22:25:56,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:25:56,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:25:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:56,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:25:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:56,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:25:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:56,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:25:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:57,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:57,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:57,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:25:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:57,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:57,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:25:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:57,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:57,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:25:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:57,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:25:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:57,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:25:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:57,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 22:25:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:57,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:25:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:57,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 22:25:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:25:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 22:25:57,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:25:57,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698423002] [2023-12-19 22:25:57,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698423002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:25:57,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:25:57,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 22:25:57,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420639175] [2023-12-19 22:25:57,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:25:57,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 22:25:57,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:25:57,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 22:25:57,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:25:57,088 INFO L87 Difference]: Start difference. First operand 1911 states and 3131 transitions. Second operand has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 8 states have internal predecessors, (90), 5 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-19 22:26:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:26:07,924 INFO L93 Difference]: Finished difference Result 4510 states and 7674 transitions. [2023-12-19 22:26:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-19 22:26:07,924 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 8 states have internal predecessors, (90), 5 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 139 [2023-12-19 22:26:07,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:26:07,933 INFO L225 Difference]: With dead ends: 4510 [2023-12-19 22:26:07,933 INFO L226 Difference]: Without dead ends: 2665 [2023-12-19 22:26:07,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2023-12-19 22:26:07,938 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 4517 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 5605 mSolverCounterSat, 1287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4579 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 6892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1287 IncrementalHoareTripleChecker+Valid, 5605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:26:07,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4579 Valid, 3759 Invalid, 6892 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1287 Valid, 5605 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-19 22:26:07,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2023-12-19 22:26:08,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2054. [2023-12-19 22:26:08,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1545 states have (on average 1.6110032362459548) internal successors, (2489), 1631 states have internal predecessors, (2489), 393 states have call successors, (393), 84 states have call predecessors, (393), 115 states have return successors, (482), 386 states have call predecessors, (482), 388 states have call successors, (482) [2023-12-19 22:26:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3364 transitions. [2023-12-19 22:26:08,534 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3364 transitions. Word has length 139 [2023-12-19 22:26:08,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:26:08,534 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 3364 transitions. [2023-12-19 22:26:08,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 8 states have internal predecessors, (90), 5 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-19 22:26:08,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3364 transitions. [2023-12-19 22:26:08,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 22:26:08,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:26:08,536 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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 22:26:08,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 22:26:08,536 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:26:08,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:26:08,536 INFO L85 PathProgramCache]: Analyzing trace with hash -355703255, now seen corresponding path program 1 times [2023-12-19 22:26:08,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:26:08,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921254672] [2023-12-19 22:26:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:26:08,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:26:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:08,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:26:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:08,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:08,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:26:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:08,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:26:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:26:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:26:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:26:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:26:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:26:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:26:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:26:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:26:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 22:26:09,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:26:09,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921254672] [2023-12-19 22:26:09,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921254672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:26:09,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113310577] [2023-12-19 22:26:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:26:09,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:26:09,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:26:09,163 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 22:26:09,165 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 22:26:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:09,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:26:09,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:26:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 22:26:09,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:26:09,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113310577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:26:09,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:26:09,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-12-19 22:26:09,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495114615] [2023-12-19 22:26:09,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:26:09,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:26:09,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:26:09,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:26:09,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:26:09,473 INFO L87 Difference]: Start difference. First operand 2054 states and 3364 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-19 22:26:10,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:26:10,164 INFO L93 Difference]: Finished difference Result 2184 states and 3583 transitions. [2023-12-19 22:26:10,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:26:10,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2023-12-19 22:26:10,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:26:10,170 INFO L225 Difference]: With dead ends: 2184 [2023-12-19 22:26:10,170 INFO L226 Difference]: Without dead ends: 2169 [2023-12-19 22:26:10,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:26:10,173 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 48 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:26:10,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2465 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:26:10,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2023-12-19 22:26:10,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 2062. [2023-12-19 22:26:10,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1553 states have (on average 1.607855763039279) internal successors, (2497), 1639 states have internal predecessors, (2497), 393 states have call successors, (393), 84 states have call predecessors, (393), 115 states have return successors, (482), 386 states have call predecessors, (482), 388 states have call successors, (482) [2023-12-19 22:26:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 3372 transitions. [2023-12-19 22:26:10,738 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 3372 transitions. Word has length 143 [2023-12-19 22:26:10,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:26:10,738 INFO L495 AbstractCegarLoop]: Abstraction has 2062 states and 3372 transitions. [2023-12-19 22:26:10,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-19 22:26:10,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 3372 transitions. [2023-12-19 22:26:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-19 22:26:10,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:26:10,740 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 5, 4, 3, 3, 3, 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] [2023-12-19 22:26:10,747 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 22:26:10,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:26:10,941 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:26:10,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:26:10,941 INFO L85 PathProgramCache]: Analyzing trace with hash -357549057, now seen corresponding path program 1 times [2023-12-19 22:26:10,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:26:10,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48475485] [2023-12-19 22:26:10,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:26:10,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:26:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:26:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:26:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:26:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:26:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:26:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:26:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:26:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:26:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:26:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:26:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:26:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:26:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 22:26:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-19 22:26:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-19 22:26:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-19 22:26:11,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:26:11,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48475485] [2023-12-19 22:26:11,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48475485] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:26:11,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398292948] [2023-12-19 22:26:11,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:26:11,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:26:11,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:26:11,433 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 22:26:11,458 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 22:26:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:11,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:26:11,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:26:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-19 22:26:11,715 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:26:11,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398292948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:26:11,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:26:11,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-19 22:26:11,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696739213] [2023-12-19 22:26:11,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:26:11,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:26:11,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:26:11,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:26:11,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:26:11,716 INFO L87 Difference]: Start difference. First operand 2062 states and 3372 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-19 22:26:12,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:26:12,395 INFO L93 Difference]: Finished difference Result 4112 states and 6776 transitions. [2023-12-19 22:26:12,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:26:12,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2023-12-19 22:26:12,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:26:12,401 INFO L225 Difference]: With dead ends: 4112 [2023-12-19 22:26:12,401 INFO L226 Difference]: Without dead ends: 2118 [2023-12-19 22:26:12,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:26:12,404 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 21 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:26:12,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2291 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:26:12,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2023-12-19 22:26:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 2118. [2023-12-19 22:26:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 1599 states have (on average 1.6053783614759225) internal successors, (2567), 1689 states have internal predecessors, (2567), 393 states have call successors, (393), 90 states have call predecessors, (393), 125 states have return successors, (486), 386 states have call predecessors, (486), 388 states have call successors, (486) [2023-12-19 22:26:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 3446 transitions. [2023-12-19 22:26:12,965 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 3446 transitions. Word has length 185 [2023-12-19 22:26:12,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:26:12,965 INFO L495 AbstractCegarLoop]: Abstraction has 2118 states and 3446 transitions. [2023-12-19 22:26:12,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-19 22:26:12,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 3446 transitions. [2023-12-19 22:26:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-19 22:26:12,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:26:12,967 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 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] [2023-12-19 22:26:12,976 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 22:26:13,174 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,SelfDestructingSolverStorable32 [2023-12-19 22:26:13,174 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:26:13,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:26:13,174 INFO L85 PathProgramCache]: Analyzing trace with hash -729196249, now seen corresponding path program 1 times [2023-12-19 22:26:13,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:26:13,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416564273] [2023-12-19 22:26:13,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:26:13,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:26:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:26:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:26:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:26:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:26:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:26:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:26:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:26:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:26:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:26:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:26:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:26:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:26:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 22:26:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 22:26:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-19 22:26:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-19 22:26:13,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:26:13,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416564273] [2023-12-19 22:26:13,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416564273] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:26:13,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104207757] [2023-12-19 22:26:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:26:13,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:26:13,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:26:13,780 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 22:26:13,793 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 22:26:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:14,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 22:26:14,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:26:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-19 22:26:14,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 22:26:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-19 22:26:14,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104207757] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 22:26:14,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 22:26:14,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 23 [2023-12-19 22:26:14,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930462957] [2023-12-19 22:26:14,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 22:26:14,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 22:26:14,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:26:14,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 22:26:14,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2023-12-19 22:26:14,590 INFO L87 Difference]: Start difference. First operand 2118 states and 3446 transitions. Second operand has 23 states, 22 states have (on average 9.363636363636363) internal successors, (206), 16 states have internal predecessors, (206), 10 states have call successors, (50), 8 states have call predecessors, (50), 12 states have return successors, (48), 13 states have call predecessors, (48), 9 states have call successors, (48) [2023-12-19 22:26:44,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:26:44,515 INFO L93 Difference]: Finished difference Result 13927 states and 24280 transitions. [2023-12-19 22:26:44,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-19 22:26:44,515 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 9.363636363636363) internal successors, (206), 16 states have internal predecessors, (206), 10 states have call successors, (50), 8 states have call predecessors, (50), 12 states have return successors, (48), 13 states have call predecessors, (48), 9 states have call successors, (48) Word has length 186 [2023-12-19 22:26:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:26:44,555 INFO L225 Difference]: With dead ends: 13927 [2023-12-19 22:26:44,555 INFO L226 Difference]: Without dead ends: 11883 [2023-12-19 22:26:44,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 417 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3444 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1769, Invalid=9151, Unknown=0, NotChecked=0, Total=10920 [2023-12-19 22:26:44,565 INFO L413 NwaCegarLoop]: 1692 mSDtfsCounter, 11702 mSDsluCounter, 10614 mSDsCounter, 0 mSdLazyCounter, 30401 mSolverCounterSat, 4140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11714 SdHoareTripleChecker+Valid, 12306 SdHoareTripleChecker+Invalid, 34541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4140 IncrementalHoareTripleChecker+Valid, 30401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:26:44,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11714 Valid, 12306 Invalid, 34541 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4140 Valid, 30401 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2023-12-19 22:26:44,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11883 states. [2023-12-19 22:26:47,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11883 to 9189. [2023-12-19 22:26:47,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9189 states, 6797 states have (on average 1.6080623804619685) internal successors, (10930), 7180 states have internal predecessors, (10930), 1880 states have call successors, (1880), 346 states have call predecessors, (1880), 511 states have return successors, (2485), 1894 states have call predecessors, (2485), 1875 states have call successors, (2485) [2023-12-19 22:26:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9189 states to 9189 states and 15295 transitions. [2023-12-19 22:26:47,634 INFO L78 Accepts]: Start accepts. Automaton has 9189 states and 15295 transitions. Word has length 186 [2023-12-19 22:26:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:26:47,634 INFO L495 AbstractCegarLoop]: Abstraction has 9189 states and 15295 transitions. [2023-12-19 22:26:47,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 9.363636363636363) internal successors, (206), 16 states have internal predecessors, (206), 10 states have call successors, (50), 8 states have call predecessors, (50), 12 states have return successors, (48), 13 states have call predecessors, (48), 9 states have call successors, (48) [2023-12-19 22:26:47,635 INFO L276 IsEmpty]: Start isEmpty. Operand 9189 states and 15295 transitions. [2023-12-19 22:26:47,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-19 22:26:47,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:26:47,641 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 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] [2023-12-19 22:26:47,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-19 22:26:47,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:26:47,842 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:26:47,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:26:47,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1073719399, now seen corresponding path program 1 times [2023-12-19 22:26:47,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:26:47,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315690458] [2023-12-19 22:26:47,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:26:47,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:26:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:47,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:26:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:26:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:26:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:26:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:26:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:26:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:26:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:26:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:26:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:26:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:26:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:26:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:26:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 22:26:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 22:26:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-19 22:26:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:26:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-19 22:26:48,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:26:48,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315690458] [2023-12-19 22:26:48,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315690458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:26:48,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:26:48,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 22:26:48,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218810139] [2023-12-19 22:26:48,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:26:48,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 22:26:48,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:26:48,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 22:26:48,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:26:48,308 INFO L87 Difference]: Start difference. First operand 9189 states and 15295 transitions. Second operand has 10 states, 9 states have (on average 11.88888888888889) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-19 22:26:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:26:57,933 INFO L93 Difference]: Finished difference Result 18148 states and 31261 transitions. [2023-12-19 22:26:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 22:26:57,934 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.88888888888889) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 186 [2023-12-19 22:26:57,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:26:57,984 INFO L225 Difference]: With dead ends: 18148 [2023-12-19 22:26:57,984 INFO L226 Difference]: Without dead ends: 11492 [2023-12-19 22:26:57,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:26:57,998 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1322 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 4835 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 5135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 4835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:26:57,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 3091 Invalid, 5135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 4835 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 22:26:58,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11492 states. [2023-12-19 22:27:01,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11492 to 9162. [2023-12-19 22:27:01,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9162 states, 6770 states have (on average 1.609453471196455) internal successors, (10896), 7153 states have internal predecessors, (10896), 1880 states have call successors, (1880), 346 states have call predecessors, (1880), 511 states have return successors, (2485), 1894 states have call predecessors, (2485), 1875 states have call successors, (2485) [2023-12-19 22:27:01,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9162 states to 9162 states and 15261 transitions. [2023-12-19 22:27:01,304 INFO L78 Accepts]: Start accepts. Automaton has 9162 states and 15261 transitions. Word has length 186 [2023-12-19 22:27:01,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:27:01,304 INFO L495 AbstractCegarLoop]: Abstraction has 9162 states and 15261 transitions. [2023-12-19 22:27:01,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.88888888888889) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-19 22:27:01,304 INFO L276 IsEmpty]: Start isEmpty. Operand 9162 states and 15261 transitions. [2023-12-19 22:27:01,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-19 22:27:01,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:27:01,311 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 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] [2023-12-19 22:27:01,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-19 22:27:01,311 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:27:01,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:27:01,311 INFO L85 PathProgramCache]: Analyzing trace with hash -71534077, now seen corresponding path program 2 times [2023-12-19 22:27:01,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:27:01,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792325972] [2023-12-19 22:27:01,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:27:01,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:27:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:27:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:27:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:27:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:27:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:27:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:27:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:27:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:27:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:27:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:27:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:27:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:27:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 22:27:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 22:27:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 22:27:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:01,729 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-19 22:27:01,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:27:01,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792325972] [2023-12-19 22:27:01,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792325972] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:27:01,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270419876] [2023-12-19 22:27:01,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 22:27:01,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:27:01,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:27:01,731 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 22:27:01,731 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 22:27:01,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-19 22:27:01,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 22:27:01,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 22:27:01,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:27:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-19 22:27:02,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:27:02,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270419876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:27:02,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:27:02,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-19 22:27:02,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272639309] [2023-12-19 22:27:02,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:27:02,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:27:02,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:27:02,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:27:02,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:27:02,059 INFO L87 Difference]: Start difference. First operand 9162 states and 15261 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-19 22:27:11,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:27:11,461 INFO L93 Difference]: Finished difference Result 30539 states and 52249 transitions. [2023-12-19 22:27:11,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:27:11,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 187 [2023-12-19 22:27:11,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:27:11,542 INFO L225 Difference]: With dead ends: 30539 [2023-12-19 22:27:11,543 INFO L226 Difference]: Without dead ends: 21422 [2023-12-19 22:27:11,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:27:11,570 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 1746 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:27:11,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1819 Valid, 811 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 22:27:11,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21422 states. [2023-12-19 22:27:19,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21422 to 20112. [2023-12-19 22:27:19,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20112 states, 14546 states have (on average 1.6031898803794857) internal successors, (23320), 15470 states have internal predecessors, (23320), 4484 states have call successors, (4484), 686 states have call predecessors, (4484), 1081 states have return successors, (6477), 4539 states have call predecessors, (6477), 4479 states have call successors, (6477) [2023-12-19 22:27:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20112 states to 20112 states and 34281 transitions. [2023-12-19 22:27:19,478 INFO L78 Accepts]: Start accepts. Automaton has 20112 states and 34281 transitions. Word has length 187 [2023-12-19 22:27:19,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:27:19,478 INFO L495 AbstractCegarLoop]: Abstraction has 20112 states and 34281 transitions. [2023-12-19 22:27:19,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-19 22:27:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 20112 states and 34281 transitions. [2023-12-19 22:27:19,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-19 22:27:19,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:27:19,489 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 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] [2023-12-19 22:27:19,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-19 22:27:19,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:27:19,695 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:27:19,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:27:19,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2077276164, now seen corresponding path program 1 times [2023-12-19 22:27:19,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:27:19,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690361880] [2023-12-19 22:27:19,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:27:19,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:27:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:19,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:27:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:19,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:19,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:27:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:27:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:27:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:27:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:27:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:27:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:27:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:27:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:27:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:27:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:27:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 22:27:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 22:27:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 22:27:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-19 22:27:20,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:27:20,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690361880] [2023-12-19 22:27:20,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690361880] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:27:20,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115211633] [2023-12-19 22:27:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:27:20,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:27:20,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:27:20,161 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 22:27:20,167 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 22:27:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:20,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:27:20,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:27:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-19 22:27:20,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:27:20,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115211633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:27:20,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:27:20,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-19 22:27:20,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518090314] [2023-12-19 22:27:20,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:27:20,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:27:20,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:27:20,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:27:20,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:27:20,472 INFO L87 Difference]: Start difference. First operand 20112 states and 34281 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-19 22:27:28,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:27:28,277 INFO L93 Difference]: Finished difference Result 40795 states and 69795 transitions. [2023-12-19 22:27:28,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:27:28,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 188 [2023-12-19 22:27:28,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:27:28,355 INFO L225 Difference]: With dead ends: 40795 [2023-12-19 22:27:28,356 INFO L226 Difference]: Without dead ends: 20368 [2023-12-19 22:27:28,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:27:28,406 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 17 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:27:28,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2226 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:27:28,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20368 states. [2023-12-19 22:27:35,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20368 to 20320. [2023-12-19 22:27:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20320 states, 14762 states have (on average 1.572144695840672) internal successors, (23208), 15638 states have internal predecessors, (23208), 4484 states have call successors, (4484), 734 states have call predecessors, (4484), 1073 states have return successors, (6461), 4531 states have call predecessors, (6461), 4479 states have call successors, (6461) [2023-12-19 22:27:35,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20320 states to 20320 states and 34153 transitions. [2023-12-19 22:27:35,790 INFO L78 Accepts]: Start accepts. Automaton has 20320 states and 34153 transitions. Word has length 188 [2023-12-19 22:27:35,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:27:35,791 INFO L495 AbstractCegarLoop]: Abstraction has 20320 states and 34153 transitions. [2023-12-19 22:27:35,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-19 22:27:35,791 INFO L276 IsEmpty]: Start isEmpty. Operand 20320 states and 34153 transitions. [2023-12-19 22:27:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-19 22:27:35,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:27:35,802 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 5, 4, 3, 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] [2023-12-19 22:27:35,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 22:27:36,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:27:36,009 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:27:36,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:27:36,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1608649823, now seen corresponding path program 1 times [2023-12-19 22:27:36,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:27:36,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566733812] [2023-12-19 22:27:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:27:36,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:27:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:27:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:27:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:27:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:27:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:27:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:27:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:27:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:27:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:27:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:27:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:27:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:27:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 22:27:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 22:27:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-19 22:27:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 20 proven. 18 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-19 22:27:36,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:27:36,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566733812] [2023-12-19 22:27:36,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566733812] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:27:36,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568620250] [2023-12-19 22:27:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:27:36,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:27:36,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:27:36,495 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 22:27:36,496 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 22:27:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:36,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 22:27:36,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:27:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-19 22:27:36,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:27:36,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568620250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:27:36,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:27:36,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-12-19 22:27:36,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048778887] [2023-12-19 22:27:36,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:27:36,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:27:36,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:27:36,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:27:36,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:27:36,788 INFO L87 Difference]: Start difference. First operand 20320 states and 34153 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-19 22:27:44,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:27:44,424 INFO L93 Difference]: Finished difference Result 40019 states and 67787 transitions. [2023-12-19 22:27:44,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:27:44,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 190 [2023-12-19 22:27:44,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:27:44,495 INFO L225 Difference]: With dead ends: 40019 [2023-12-19 22:27:44,495 INFO L226 Difference]: Without dead ends: 19528 [2023-12-19 22:27:44,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:27:44,544 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 16 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:27:44,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2225 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:27:44,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19528 states. [2023-12-19 22:27:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19528 to 19496. [2023-12-19 22:27:51,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19496 states, 14074 states have (on average 1.574534602813699) internal successors, (22160), 14934 states have internal predecessors, (22160), 4412 states have call successors, (4412), 710 states have call predecessors, (4412), 1009 states have return successors, (6245), 4435 states have call predecessors, (6245), 4407 states have call successors, (6245) [2023-12-19 22:27:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19496 states to 19496 states and 32817 transitions. [2023-12-19 22:27:51,958 INFO L78 Accepts]: Start accepts. Automaton has 19496 states and 32817 transitions. Word has length 190 [2023-12-19 22:27:51,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:27:51,958 INFO L495 AbstractCegarLoop]: Abstraction has 19496 states and 32817 transitions. [2023-12-19 22:27:51,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-19 22:27:51,958 INFO L276 IsEmpty]: Start isEmpty. Operand 19496 states and 32817 transitions. [2023-12-19 22:27:51,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-19 22:27:51,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:27:51,968 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 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] [2023-12-19 22:27:51,975 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 22:27:52,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-19 22:27:52,169 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:27:52,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:27:52,169 INFO L85 PathProgramCache]: Analyzing trace with hash 386348624, now seen corresponding path program 1 times [2023-12-19 22:27:52,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:27:52,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011354238] [2023-12-19 22:27:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:27:52,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:27:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:27:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:27:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 22:27:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:27:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:27:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:27:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:27:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:27:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:27:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:27:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:27:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:27:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:27:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 22:27:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 22:27:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-19 22:27:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:27:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-19 22:27:52,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:27:52,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011354238] [2023-12-19 22:27:52,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011354238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:27:52,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:27:52,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:27:52,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610532723] [2023-12-19 22:27:52,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:27:52,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:27:52,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:27:52,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:27:52,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:27:52,647 INFO L87 Difference]: Start difference. First operand 19496 states and 32817 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-19 22:28:03,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:28:03,906 INFO L93 Difference]: Finished difference Result 26948 states and 47164 transitions. [2023-12-19 22:28:03,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:28:03,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 190 [2023-12-19 22:28:03,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:28:03,984 INFO L225 Difference]: With dead ends: 26948 [2023-12-19 22:28:03,985 INFO L226 Difference]: Without dead ends: 12887 [2023-12-19 22:28:04,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:28:04,030 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 804 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 2670 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:28:04,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1634 Invalid, 2838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2670 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-19 22:28:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12887 states. [2023-12-19 22:28:08,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12887 to 9580. [2023-12-19 22:28:08,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9580 states, 6908 states have (on average 1.5768674001158078) internal successors, (10893), 7339 states have internal predecessors, (10893), 2166 states have call successors, (2166), 357 states have call predecessors, (2166), 505 states have return successors, (2867), 2175 states have call predecessors, (2867), 2161 states have call successors, (2867) [2023-12-19 22:28:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9580 states to 9580 states and 15926 transitions. [2023-12-19 22:28:08,094 INFO L78 Accepts]: Start accepts. Automaton has 9580 states and 15926 transitions. Word has length 190 [2023-12-19 22:28:08,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:28:08,095 INFO L495 AbstractCegarLoop]: Abstraction has 9580 states and 15926 transitions. [2023-12-19 22:28:08,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-19 22:28:08,095 INFO L276 IsEmpty]: Start isEmpty. Operand 9580 states and 15926 transitions. [2023-12-19 22:28:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-19 22:28:08,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:28:08,100 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:28:08,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-19 22:28:08,101 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:28:08,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:28:08,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2053001629, now seen corresponding path program 1 times [2023-12-19 22:28:08,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:28:08,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583194635] [2023-12-19 22:28:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:08,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:28:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:28:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:28:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:28:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:28:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:28:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:28:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:28:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 22:28:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 22:28:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 22:28:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 22:28:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 22:28:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 22:28:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 22:28:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:28:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:28:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:28:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:28:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:28:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-12-19 22:28:08,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:28:08,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583194635] [2023-12-19 22:28:08,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583194635] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:28:08,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632306076] [2023-12-19 22:28:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:08,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:28:08,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:28:08,905 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 22:28:08,907 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 22:28:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:09,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:28:09,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:28:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-19 22:28:09,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:28:09,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632306076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:28:09,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:28:09,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2023-12-19 22:28:09,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364630621] [2023-12-19 22:28:09,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:28:09,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:28:09,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:28:09,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:28:09,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:28:09,328 INFO L87 Difference]: Start difference. First operand 9580 states and 15926 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-19 22:28:13,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:28:13,031 INFO L93 Difference]: Finished difference Result 19431 states and 32632 transitions. [2023-12-19 22:28:13,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:28:13,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 253 [2023-12-19 22:28:13,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:28:13,070 INFO L225 Difference]: With dead ends: 19431 [2023-12-19 22:28:13,070 INFO L226 Difference]: Without dead ends: 9892 [2023-12-19 22:28:13,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:28:13,100 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 213 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:28:13,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2106 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:28:13,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9892 states. [2023-12-19 22:28:16,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9892 to 9892. [2023-12-19 22:28:16,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9892 states, 7212 states have (on average 1.591375485302274) internal successors, (11477), 7643 states have internal predecessors, (11477), 2166 states have call successors, (2166), 365 states have call predecessors, (2166), 513 states have return successors, (2867), 2175 states have call predecessors, (2867), 2161 states have call successors, (2867) [2023-12-19 22:28:16,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9892 states to 9892 states and 16510 transitions. [2023-12-19 22:28:16,945 INFO L78 Accepts]: Start accepts. Automaton has 9892 states and 16510 transitions. Word has length 253 [2023-12-19 22:28:16,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:28:16,945 INFO L495 AbstractCegarLoop]: Abstraction has 9892 states and 16510 transitions. [2023-12-19 22:28:16,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-19 22:28:16,945 INFO L276 IsEmpty]: Start isEmpty. Operand 9892 states and 16510 transitions. [2023-12-19 22:28:16,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-19 22:28:16,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:28:16,950 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:28:16,959 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 22:28:17,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-19 22:28:17,151 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:28:17,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:28:17,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1867249441, now seen corresponding path program 1 times [2023-12-19 22:28:17,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:28:17,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247443222] [2023-12-19 22:28:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:17,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:28:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:28:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:28:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:28:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:28:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:28:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:28:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 22:28:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 22:28:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:28:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:28:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:28:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 22:28:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:28:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:28:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:28:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:28:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:28:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:28:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:28:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-12-19 22:28:17,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:28:17,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247443222] [2023-12-19 22:28:17,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247443222] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:28:17,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779132763] [2023-12-19 22:28:17,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:17,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:28:17,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:28:17,943 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 22:28:17,962 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 22:28:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:18,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 2095 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:28:18,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:28:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-19 22:28:18,278 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:28:18,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779132763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:28:18,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:28:18,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-12-19 22:28:18,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871209679] [2023-12-19 22:28:18,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:28:18,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:28:18,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:28:18,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:28:18,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:28:18,279 INFO L87 Difference]: Start difference. First operand 9892 states and 16510 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-19 22:28:22,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:28:22,060 INFO L93 Difference]: Finished difference Result 20055 states and 33764 transitions. [2023-12-19 22:28:22,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:28:22,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 258 [2023-12-19 22:28:22,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:28:22,093 INFO L225 Difference]: With dead ends: 20055 [2023-12-19 22:28:22,093 INFO L226 Difference]: Without dead ends: 10204 [2023-12-19 22:28:22,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:28:22,114 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 211 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:28:22,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2106 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:28:22,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10204 states. [2023-12-19 22:28:25,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10204 to 10204. [2023-12-19 22:28:25,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10204 states, 7516 states have (on average 1.604709952102182) internal successors, (12061), 7947 states have internal predecessors, (12061), 2166 states have call successors, (2166), 373 states have call predecessors, (2166), 521 states have return successors, (2867), 2175 states have call predecessors, (2867), 2161 states have call successors, (2867) [2023-12-19 22:28:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10204 states to 10204 states and 17094 transitions. [2023-12-19 22:28:25,647 INFO L78 Accepts]: Start accepts. Automaton has 10204 states and 17094 transitions. Word has length 258 [2023-12-19 22:28:25,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:28:25,647 INFO L495 AbstractCegarLoop]: Abstraction has 10204 states and 17094 transitions. [2023-12-19 22:28:25,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-19 22:28:25,647 INFO L276 IsEmpty]: Start isEmpty. Operand 10204 states and 17094 transitions. [2023-12-19 22:28:25,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-19 22:28:25,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:28:25,653 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:28:25,660 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 22:28:25,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:28:25,853 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:28:25,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:28:25,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1877338511, now seen corresponding path program 1 times [2023-12-19 22:28:25,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:28:25,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150525090] [2023-12-19 22:28:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:25,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:28:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:28:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:28:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:28:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:28:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:28:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:28:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:28:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:28:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 22:28:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 22:28:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:28:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 22:28:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 22:28:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-19 22:28:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:28:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:28:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:28:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:28:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:28:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-19 22:28:26,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:28:26,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150525090] [2023-12-19 22:28:26,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150525090] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:28:26,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724793454] [2023-12-19 22:28:26,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:26,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:28:26,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:28:26,501 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 22:28:26,506 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 22:28:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:26,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 2099 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:28:26,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:28:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-19 22:28:26,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:28:26,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724793454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:28:26,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:28:26,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-12-19 22:28:26,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202828623] [2023-12-19 22:28:26,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:28:26,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:28:26,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:28:26,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:28:26,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:28:26,834 INFO L87 Difference]: Start difference. First operand 10204 states and 17094 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-19 22:28:31,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:28:31,117 INFO L93 Difference]: Finished difference Result 20679 states and 34896 transitions. [2023-12-19 22:28:31,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:28:31,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 262 [2023-12-19 22:28:31,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:28:31,151 INFO L225 Difference]: With dead ends: 20679 [2023-12-19 22:28:31,151 INFO L226 Difference]: Without dead ends: 10516 [2023-12-19 22:28:31,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:28:31,171 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 209 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:28:31,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 2106 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:28:31,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10516 states. [2023-12-19 22:28:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10516 to 10516. [2023-12-19 22:28:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10516 states, 7820 states have (on average 1.617007672634271) internal successors, (12645), 8251 states have internal predecessors, (12645), 2166 states have call successors, (2166), 381 states have call predecessors, (2166), 529 states have return successors, (2867), 2175 states have call predecessors, (2867), 2161 states have call successors, (2867) [2023-12-19 22:28:34,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10516 states to 10516 states and 17678 transitions. [2023-12-19 22:28:34,863 INFO L78 Accepts]: Start accepts. Automaton has 10516 states and 17678 transitions. Word has length 262 [2023-12-19 22:28:34,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:28:34,863 INFO L495 AbstractCegarLoop]: Abstraction has 10516 states and 17678 transitions. [2023-12-19 22:28:34,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-19 22:28:34,863 INFO L276 IsEmpty]: Start isEmpty. Operand 10516 states and 17678 transitions. [2023-12-19 22:28:34,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-19 22:28:34,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:28:34,869 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:28:34,880 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 22:28:35,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:28:35,072 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:28:35,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:28:35,073 INFO L85 PathProgramCache]: Analyzing trace with hash -618916225, now seen corresponding path program 1 times [2023-12-19 22:28:35,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:28:35,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607342701] [2023-12-19 22:28:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:35,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:28:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:28:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:28:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:28:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:28:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:28:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:28:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:28:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:28:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:28:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 22:28:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:28:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 22:28:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-19 22:28:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-19 22:28:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:28:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:28:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:28:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:28:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:28:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:35,778 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-12-19 22:28:35,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:28:35,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607342701] [2023-12-19 22:28:35,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607342701] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:28:35,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370144795] [2023-12-19 22:28:35,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:35,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:28:35,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:28:35,785 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 22:28:35,786 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 22:28:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:36,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:28:36,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:28:36,153 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-19 22:28:36,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:28:36,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370144795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:28:36,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:28:36,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-12-19 22:28:36,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929761040] [2023-12-19 22:28:36,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:28:36,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:28:36,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:28:36,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:28:36,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:28:36,155 INFO L87 Difference]: Start difference. First operand 10516 states and 17678 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-19 22:28:40,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:28:40,106 INFO L93 Difference]: Finished difference Result 21303 states and 36028 transitions. [2023-12-19 22:28:40,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:28:40,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 265 [2023-12-19 22:28:40,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:28:40,143 INFO L225 Difference]: With dead ends: 21303 [2023-12-19 22:28:40,143 INFO L226 Difference]: Without dead ends: 10828 [2023-12-19 22:28:40,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:28:40,172 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 207 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:28:40,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 2106 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:28:40,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10828 states. [2023-12-19 22:28:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10828 to 10828. [2023-12-19 22:28:43,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10828 states, 8124 states have (on average 1.628385032003939) internal successors, (13229), 8555 states have internal predecessors, (13229), 2166 states have call successors, (2166), 389 states have call predecessors, (2166), 537 states have return successors, (2867), 2175 states have call predecessors, (2867), 2161 states have call successors, (2867) [2023-12-19 22:28:43,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10828 states to 10828 states and 18262 transitions. [2023-12-19 22:28:43,827 INFO L78 Accepts]: Start accepts. Automaton has 10828 states and 18262 transitions. Word has length 265 [2023-12-19 22:28:43,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:28:43,828 INFO L495 AbstractCegarLoop]: Abstraction has 10828 states and 18262 transitions. [2023-12-19 22:28:43,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-19 22:28:43,828 INFO L276 IsEmpty]: Start isEmpty. Operand 10828 states and 18262 transitions. [2023-12-19 22:28:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-19 22:28:43,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:28:43,834 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:28:43,850 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 22:28:44,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:28:44,035 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:28:44,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:28:44,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1379362189, now seen corresponding path program 1 times [2023-12-19 22:28:44,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:28:44,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075462859] [2023-12-19 22:28:44,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:44,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:28:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:28:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:28:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:28:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:28:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:28:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:28:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:28:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:28:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:28:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 22:28:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:28:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:28:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:28:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:28:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:28:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:28:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:28:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 8 proven. 39 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-19 22:28:44,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:28:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075462859] [2023-12-19 22:28:44,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075462859] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:28:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090864485] [2023-12-19 22:28:44,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:44,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:28:44,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:28:44,788 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 22:28:44,799 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 22:28:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:28:45,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 22:28:45,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:28:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 22 proven. 31 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-19 22:28:45,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 22:28:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 24 proven. 34 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-12-19 22:28:46,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090864485] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 22:28:46,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 22:28:46,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 11] total 26 [2023-12-19 22:28:46,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475732951] [2023-12-19 22:28:46,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 22:28:46,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 22:28:46,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:28:46,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 22:28:46,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2023-12-19 22:28:46,015 INFO L87 Difference]: Start difference. First operand 10828 states and 18262 transitions. Second operand has 26 states, 26 states have (on average 10.038461538461538) internal successors, (261), 21 states have internal predecessors, (261), 11 states have call successors, (55), 9 states have call predecessors, (55), 14 states have return successors, (58), 16 states have call predecessors, (58), 11 states have call successors, (58) [2023-12-19 22:29:38,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:38,105 INFO L93 Difference]: Finished difference Result 63802 states and 117178 transitions. [2023-12-19 22:29:38,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-12-19 22:29:38,105 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.038461538461538) internal successors, (261), 21 states have internal predecessors, (261), 11 states have call successors, (55), 9 states have call predecessors, (55), 14 states have return successors, (58), 16 states have call predecessors, (58), 11 states have call successors, (58) Word has length 233 [2023-12-19 22:29:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:38,465 INFO L225 Difference]: With dead ends: 63802 [2023-12-19 22:29:38,465 INFO L226 Difference]: Without dead ends: 51087 [2023-12-19 22:29:38,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 563 SyntacticMatches, 4 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8001 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=3674, Invalid=18082, Unknown=0, NotChecked=0, Total=21756 [2023-12-19 22:29:38,553 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 12466 mSDsluCounter, 6017 mSDsCounter, 0 mSdLazyCounter, 13179 mSolverCounterSat, 4699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12466 SdHoareTripleChecker+Valid, 6713 SdHoareTripleChecker+Invalid, 17878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4699 IncrementalHoareTripleChecker+Valid, 13179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:38,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12466 Valid, 6713 Invalid, 17878 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4699 Valid, 13179 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2023-12-19 22:29:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51087 states. [2023-12-19 22:29:52,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51087 to 40902. [2023-12-19 22:29:52,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40902 states, 30384 states have (on average 1.591725908372828) internal successors, (48363), 32043 states have internal predecessors, (48363), 8458 states have call successors, (8458), 1547 states have call predecessors, (8458), 2059 states have return successors, (11964), 8479 states have call predecessors, (11964), 8453 states have call successors, (11964) [2023-12-19 22:29:53,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40902 states to 40902 states and 68785 transitions. [2023-12-19 22:29:53,115 INFO L78 Accepts]: Start accepts. Automaton has 40902 states and 68785 transitions. Word has length 233 [2023-12-19 22:29:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:53,115 INFO L495 AbstractCegarLoop]: Abstraction has 40902 states and 68785 transitions. [2023-12-19 22:29:53,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.038461538461538) internal successors, (261), 21 states have internal predecessors, (261), 11 states have call successors, (55), 9 states have call predecessors, (55), 14 states have return successors, (58), 16 states have call predecessors, (58), 11 states have call successors, (58) [2023-12-19 22:29:53,115 INFO L276 IsEmpty]: Start isEmpty. Operand 40902 states and 68785 transitions. [2023-12-19 22:29:53,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-19 22:29:53,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:53,123 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 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, 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] [2023-12-19 22:29:53,132 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 22:29:53,323 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,SelfDestructingSolverStorable43 [2023-12-19 22:29:53,323 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:53,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:53,324 INFO L85 PathProgramCache]: Analyzing trace with hash -720526403, now seen corresponding path program 1 times [2023-12-19 22:29:53,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:53,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148950850] [2023-12-19 22:29:53,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:53,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:53,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:53,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:53,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:29:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:53,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:29:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:29:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:29:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:29:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:29:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:29:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:29:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:29:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 22:29:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 22:29:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:29:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-19 22:29:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:29:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:29:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:29:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:29:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:29:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,116 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 15 proven. 37 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-12-19 22:29:54,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:54,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148950850] [2023-12-19 22:29:54,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148950850] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:29:54,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741174403] [2023-12-19 22:29:54,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:54,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:29:54,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:29:54,117 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 22:29:54,118 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 22:29:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:54,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 2100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:29:54,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:29:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-19 22:29:54,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:29:54,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741174403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:54,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:29:54,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2023-12-19 22:29:54,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946183238] [2023-12-19 22:29:54,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:54,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:29:54,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:54,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:29:54,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:29:54,462 INFO L87 Difference]: Start difference. First operand 40902 states and 68785 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-12-19 22:30:23,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:23,193 INFO L93 Difference]: Finished difference Result 121324 states and 208005 transitions. [2023-12-19 22:30:23,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:30:23,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 268 [2023-12-19 22:30:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:23,571 INFO L225 Difference]: With dead ends: 121324 [2023-12-19 22:30:23,571 INFO L226 Difference]: Without dead ends: 80395 [2023-12-19 22:30:23,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:30:23,875 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 757 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:23,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1524 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:30:24,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80395 states. [2023-12-19 22:30:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80395 to 80248. [2023-12-19 22:30:52,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80248 states, 59514 states have (on average 1.5941963235541217) internal successors, (94877), 62823 states have internal predecessors, (94877), 16756 states have call successors, (16756), 2959 states have call predecessors, (16756), 3977 states have return successors, (26541), 16801 states have call predecessors, (26541), 16751 states have call successors, (26541) [2023-12-19 22:30:52,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80248 states to 80248 states and 138174 transitions. [2023-12-19 22:30:52,842 INFO L78 Accepts]: Start accepts. Automaton has 80248 states and 138174 transitions. Word has length 268 [2023-12-19 22:30:52,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:52,843 INFO L495 AbstractCegarLoop]: Abstraction has 80248 states and 138174 transitions. [2023-12-19 22:30:52,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-12-19 22:30:52,843 INFO L276 IsEmpty]: Start isEmpty. Operand 80248 states and 138174 transitions. [2023-12-19 22:30:52,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-12-19 22:30:52,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:52,853 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 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, 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] [2023-12-19 22:30:52,860 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 22:30:53,054 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,SelfDestructingSolverStorable44 [2023-12-19 22:30:53,054 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:53,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:53,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1622865739, now seen corresponding path program 1 times [2023-12-19 22:30:53,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:53,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152833802] [2023-12-19 22:30:53,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:53,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:30:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:30:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:30:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:30:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:30:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:30:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:30:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:30:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:30:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 22:30:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 22:30:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:30:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-19 22:30:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-19 22:30:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:30:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:30:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:30:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:30:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:30:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 15 proven. 40 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-19 22:30:53,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:53,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152833802] [2023-12-19 22:30:53,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152833802] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:30:53,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896226665] [2023-12-19 22:30:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:53,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:30:53,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:30:53,764 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 22:30:53,765 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 22:30:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:54,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 2122 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 22:30:54,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:30:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-12-19 22:30:54,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 22:30:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-12-19 22:30:54,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896226665] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 22:30:54,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 22:30:54,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 7] total 24 [2023-12-19 22:30:54,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895408790] [2023-12-19 22:30:54,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 22:30:54,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 22:30:54,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:54,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 22:30:54,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2023-12-19 22:30:54,589 INFO L87 Difference]: Start difference. First operand 80248 states and 138174 transitions. Second operand has 24 states, 24 states have (on average 15.125) internal successors, (363), 20 states have internal predecessors, (363), 9 states have call successors, (71), 7 states have call predecessors, (71), 9 states have return successors, (71), 11 states have call predecessors, (71), 9 states have call successors, (71) [2023-12-19 22:32:25,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:32:25,442 INFO L93 Difference]: Finished difference Result 219453 states and 454446 transitions. [2023-12-19 22:32:25,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-19 22:32:25,443 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 15.125) internal successors, (363), 20 states have internal predecessors, (363), 9 states have call successors, (71), 7 states have call predecessors, (71), 9 states have return successors, (71), 11 states have call predecessors, (71), 9 states have call successors, (71) Word has length 276 [2023-12-19 22:32:25,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:32:27,910 INFO L225 Difference]: With dead ends: 219453 [2023-12-19 22:32:27,910 INFO L226 Difference]: Without dead ends: 134248 [2023-12-19 22:32:29,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4091 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=2412, Invalid=9798, Unknown=0, NotChecked=0, Total=12210 [2023-12-19 22:32:29,241 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 7703 mSDsluCounter, 3978 mSDsCounter, 0 mSdLazyCounter, 8707 mSolverCounterSat, 2883 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7703 SdHoareTripleChecker+Valid, 4373 SdHoareTripleChecker+Invalid, 11590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2883 IncrementalHoareTripleChecker+Valid, 8707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:32:29,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7703 Valid, 4373 Invalid, 11590 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2883 Valid, 8707 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-19 22:32:29,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134248 states. [2023-12-19 22:33:07,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134248 to 88316. [2023-12-19 22:33:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88316 states, 64362 states have (on average 1.5450887169447811) internal successors, (99445), 67871 states have internal predecessors, (99445), 19596 states have call successors, (19596), 3385 states have call predecessors, (19596), 4357 states have return successors, (35725), 19687 states have call predecessors, (35725), 19591 states have call successors, (35725) [2023-12-19 22:33:08,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88316 states to 88316 states and 154766 transitions. [2023-12-19 22:33:08,437 INFO L78 Accepts]: Start accepts. Automaton has 88316 states and 154766 transitions. Word has length 276 [2023-12-19 22:33:08,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:33:08,438 INFO L495 AbstractCegarLoop]: Abstraction has 88316 states and 154766 transitions. [2023-12-19 22:33:08,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.125) internal successors, (363), 20 states have internal predecessors, (363), 9 states have call successors, (71), 7 states have call predecessors, (71), 9 states have return successors, (71), 11 states have call predecessors, (71), 9 states have call successors, (71) [2023-12-19 22:33:08,438 INFO L276 IsEmpty]: Start isEmpty. Operand 88316 states and 154766 transitions. [2023-12-19 22:33:08,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-19 22:33:08,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:33:08,450 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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, 1, 1, 1, 1] [2023-12-19 22:33:08,457 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 22:33:08,650 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,SelfDestructingSolverStorable45 [2023-12-19 22:33:08,651 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:33:08,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:33:08,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1475056357, now seen corresponding path program 1 times [2023-12-19 22:33:08,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:33:08,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227089225] [2023-12-19 22:33:08,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:33:08,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:33:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:08,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:33:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:08,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:08,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:33:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:33:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:33:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:33:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:33:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:33:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:33:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:33:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:33:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:33:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 22:33:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 22:33:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-19 22:33:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-19 22:33:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-19 22:33:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-19 22:33:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-19 22:33:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-12-19 22:33:09,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:33:09,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227089225] [2023-12-19 22:33:09,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227089225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:33:09,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:33:09,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 22:33:09,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682031028] [2023-12-19 22:33:09,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:33:09,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 22:33:09,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:33:09,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 22:33:09,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:33:09,228 INFO L87 Difference]: Start difference. First operand 88316 states and 154766 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 7 states have internal predecessors, (133), 4 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2023-12-19 22:34:26,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:34:26,547 INFO L93 Difference]: Finished difference Result 219284 states and 434261 transitions. [2023-12-19 22:34:26,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:34:26,547 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 7 states have internal predecessors, (133), 4 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 222 [2023-12-19 22:34:26,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:34:28,696 INFO L225 Difference]: With dead ends: 219284 [2023-12-19 22:34:28,696 INFO L226 Difference]: Without dead ends: 130523