/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 08:33:50,793 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 08:33:50,837 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 08:33:50,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 08:33:50,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 08:33:50,864 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 08:33:50,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 08:33:50,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 08:33:50,865 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 08:33:50,865 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 08:33:50,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 08:33:50,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 08:33:50,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 08:33:50,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 08:33:50,866 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 08:33:50,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 08:33:50,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 08:33:50,867 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 08:33:50,867 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 08:33:50,867 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 08:33:50,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 08:33:50,868 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 08:33:50,868 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 08:33:50,869 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 08:33:50,869 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 08:33:50,869 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 08:33:50,869 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 08:33:50,869 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 08:33:50,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 08:33:50,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 08:33:50,870 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 08:33:50,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 08:33:50,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 08:33:50,871 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 08:33:50,871 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 08:33:50,871 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 08:33:50,871 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 08:33:50,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 08:33:50,871 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 08:33:50,872 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 08:33:50,872 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 08:33:50,872 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 08:33:50,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 08:33:50,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 08:33:51,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 08:33:51,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 08:33:51,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 08:33:51,065 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 08:33:51,069 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 08:33:51,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c [2023-12-21 08:33:52,123 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 08:33:52,330 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 08:33:52,330 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c [2023-12-21 08:33:52,352 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6956280c6/5e64680310174c18848f81d4dc27367a/FLAG18c137231 [2023-12-21 08:33:52,367 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6956280c6/5e64680310174c18848f81d4dc27367a [2023-12-21 08:33:52,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 08:33:52,371 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 08:33:52,372 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 08:33:52,372 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 08:33:52,376 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 08:33:52,377 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:33:52" (1/1) ... [2023-12-21 08:33:52,378 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3699e841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:52, skipping insertion in model container [2023-12-21 08:33:52,378 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:33:52" (1/1) ... [2023-12-21 08:33:52,431 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 08:33:52,796 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c[61393,61406] [2023-12-21 08:33:52,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 08:33:52,868 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 08:33:52,874 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2023-12-21 08:33:52,876 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [169] [2023-12-21 08:33:52,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [837] [2023-12-21 08:33:52,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [932] [2023-12-21 08:33:52,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1290] [2023-12-21 08:33:52,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1382] [2023-12-21 08:33:52,878 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2960] [2023-12-21 08:33:52,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2995] [2023-12-21 08:33:52,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3004] [2023-12-21 08:33:52,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3019] [2023-12-21 08:33:52,938 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c[61393,61406] [2023-12-21 08:33:52,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 08:33:52,964 INFO L206 MainTranslator]: Completed translation [2023-12-21 08:33:52,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:52 WrapperNode [2023-12-21 08:33:52,964 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 08:33:52,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 08:33:52,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 08:33:52,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 08:33:52,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:52" (1/1) ... [2023-12-21 08:33:52,996 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:52" (1/1) ... [2023-12-21 08:33:53,031 INFO L138 Inliner]: procedures = 93, calls = 346, calls flagged for inlining = 30, calls inlined = 26, statements flattened = 882 [2023-12-21 08:33:53,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 08:33:53,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 08:33:53,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 08:33:53,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 08:33:53,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:52" (1/1) ... [2023-12-21 08:33:53,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:52" (1/1) ... [2023-12-21 08:33:53,051 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:52" (1/1) ... [2023-12-21 08:33:53,071 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-12-21 08:33:53,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:52" (1/1) ... [2023-12-21 08:33:53,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:52" (1/1) ... [2023-12-21 08:33:53,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:52" (1/1) ... [2023-12-21 08:33:53,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:52" (1/1) ... [2023-12-21 08:33:53,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:52" (1/1) ... [2023-12-21 08:33:53,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:52" (1/1) ... [2023-12-21 08:33:53,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 08:33:53,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 08:33:53,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 08:33:53,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 08:33:53,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:52" (1/1) ... [2023-12-21 08:33:53,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 08:33:53,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:53,137 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) [2023-12-21 08:33:53,176 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 [2023-12-21 08:33:53,182 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-12-21 08:33:53,183 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-12-21 08:33:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 08:33:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-12-21 08:33:53,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-12-21 08:33:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-21 08:33:53,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-21 08:33:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-12-21 08:33:53,184 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-12-21 08:33:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-21 08:33:53,184 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-21 08:33:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-21 08:33:53,184 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-21 08:33:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-12-21 08:33:53,184 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-12-21 08:33:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-21 08:33:53,185 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-21 08:33:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-12-21 08:33:53,187 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-12-21 08:33:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-21 08:33:53,187 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-21 08:33:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-21 08:33:53,187 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-21 08:33:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-21 08:33:53,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-21 08:33:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-21 08:33:53,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-21 08:33:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-21 08:33:53,188 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-21 08:33:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-21 08:33:53,188 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-21 08:33:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-21 08:33:53,188 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-21 08:33:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-21 08:33:53,188 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-21 08:33:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-21 08:33:53,188 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-21 08:33:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-21 08:33:53,189 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-21 08:33:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-21 08:33:53,189 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-21 08:33:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 08:33:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 08:33:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 08:33:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 08:33:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-21 08:33:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-21 08:33:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-21 08:33:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-21 08:33:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-21 08:33:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-21 08:33:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-21 08:33:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-21 08:33:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-21 08:33:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-21 08:33:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-21 08:33:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-21 08:33:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-21 08:33:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-21 08:33:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-21 08:33:53,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-21 08:33:53,191 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-12-21 08:33:53,191 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-12-21 08:33:53,191 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-21 08:33:53,191 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-21 08:33:53,192 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-21 08:33:53,192 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-21 08:33:53,192 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-21 08:33:53,192 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-21 08:33:53,192 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-12-21 08:33:53,192 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-12-21 08:33:53,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 08:33:53,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 08:33:53,193 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-21 08:33:53,193 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-21 08:33:53,382 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 08:33:53,383 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 08:33:54,192 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 08:33:54,256 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 08:33:54,256 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-21 08:33:54,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:33:54 BoogieIcfgContainer [2023-12-21 08:33:54,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 08:33:54,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 08:33:54,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 08:33:54,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 08:33:54,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:33:52" (1/3) ... [2023-12-21 08:33:54,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622b89e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:33:54, skipping insertion in model container [2023-12-21 08:33:54,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:52" (2/3) ... [2023-12-21 08:33:54,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622b89e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:33:54, skipping insertion in model container [2023-12-21 08:33:54,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:33:54" (3/3) ... [2023-12-21 08:33:54,264 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product30.cil.c [2023-12-21 08:33:54,278 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 08:33:54,278 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 08:33:54,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 08:33:54,338 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;@1a16075f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 08:33:54,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 08:33:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 586 states, 456 states have (on average 1.7258771929824561) internal successors, (787), 476 states have internal predecessors, (787), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-21 08:33:54,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 08:33:54,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:54,364 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-21 08:33:54,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:54,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:54,368 INFO L85 PathProgramCache]: Analyzing trace with hash 527405288, now seen corresponding path program 1 times [2023-12-21 08:33:54,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:54,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555355009] [2023-12-21 08:33:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:54,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:54,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:54,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:54,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 08:33:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:54,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:54,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:33:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:55,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:33:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:55,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:55,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 08:33:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:55,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:33:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:55,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:33:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:55,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 08:33:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 08:33:55,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:55,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555355009] [2023-12-21 08:33:55,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555355009] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:55,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311807688] [2023-12-21 08:33:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:55,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:55,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:55,342 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) [2023-12-21 08:33:55,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 08:33:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:55,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 08:33:55,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 08:33:55,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:55,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311807688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:55,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:55,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2023-12-21 08:33:55,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944049361] [2023-12-21 08:33:55,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:55,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 08:33:55,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:55,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 08:33:55,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:33:55,707 INFO L87 Difference]: Start difference. First operand has 586 states, 456 states have (on average 1.7258771929824561) internal successors, (787), 476 states have internal predecessors, (787), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 08:33:55,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:55,816 INFO L93 Difference]: Finished difference Result 1156 states and 1971 transitions. [2023-12-21 08:33:55,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 08:33:55,825 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2023-12-21 08:33:55,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:55,840 INFO L225 Difference]: With dead ends: 1156 [2023-12-21 08:33:55,840 INFO L226 Difference]: Without dead ends: 580 [2023-12-21 08:33:55,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:33:55,852 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:33:55,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 963 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:33:55,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-12-21 08:33:55,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2023-12-21 08:33:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 453 states have (on average 1.7019867549668874) internal successors, (771), 471 states have internal predecessors, (771), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-21 08:33:55,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 972 transitions. [2023-12-21 08:33:55,910 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 972 transitions. Word has length 84 [2023-12-21 08:33:55,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:55,911 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 972 transitions. [2023-12-21 08:33:55,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 08:33:55,912 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 972 transitions. [2023-12-21 08:33:55,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 08:33:55,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:55,915 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:33:55,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 08:33:56,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 08:33:56,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:56,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:56,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1649193591, now seen corresponding path program 1 times [2023-12-21 08:33:56,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:56,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616501472] [2023-12-21 08:33:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:56,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:56,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:56,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:56,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 08:33:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:56,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:56,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:33:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:56,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:33:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:56,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 08:33:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:56,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:33:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:56,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:33:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:56,375 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 08:33:56,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:56,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616501472] [2023-12-21 08:33:56,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616501472] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:56,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109017211] [2023-12-21 08:33:56,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:56,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:56,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:56,379 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) [2023-12-21 08:33:56,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 08:33:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:56,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:33:56,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 08:33:56,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:56,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109017211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:56,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:56,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-12-21 08:33:56,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518479939] [2023-12-21 08:33:56,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:56,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:33:56,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:56,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:33:56,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 08:33:56,704 INFO L87 Difference]: Start difference. First operand 580 states and 972 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-21 08:33:56,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:56,826 INFO L93 Difference]: Finished difference Result 1166 states and 1957 transitions. [2023-12-21 08:33:56,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:33:56,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2023-12-21 08:33:56,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:56,833 INFO L225 Difference]: With dead ends: 1166 [2023-12-21 08:33:56,833 INFO L226 Difference]: Without dead ends: 589 [2023-12-21 08:33:56,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 08:33:56,838 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 26 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2817 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:33:56,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2817 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:33:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-12-21 08:33:56,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2023-12-21 08:33:56,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 461 states have (on average 1.702819956616052) internal successors, (785), 479 states have internal predecessors, (785), 102 states have call successors, (102), 27 states have call predecessors, (102), 25 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-21 08:33:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 986 transitions. [2023-12-21 08:33:56,877 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 986 transitions. Word has length 72 [2023-12-21 08:33:56,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:56,878 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 986 transitions. [2023-12-21 08:33:56,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-21 08:33:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 986 transitions. [2023-12-21 08:33:56,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 08:33:56,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:56,880 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-21 08:33:56,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 08:33:57,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 08:33:57,090 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:57,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:57,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1535305076, now seen corresponding path program 1 times [2023-12-21 08:33:57,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:57,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609222643] [2023-12-21 08:33:57,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:57,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:57,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:57,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-21 08:33:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:57,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:57,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:57,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:33:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:57,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:57,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 08:33:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:33:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:57,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 08:33:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 08:33:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 08:33:57,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:57,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609222643] [2023-12-21 08:33:57,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609222643] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:57,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609756971] [2023-12-21 08:33:57,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:57,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:57,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:57,794 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) [2023-12-21 08:33:57,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 08:33:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:58,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:33:58,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 08:33:58,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:58,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609756971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:58,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:58,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-12-21 08:33:58,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495791257] [2023-12-21 08:33:58,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:58,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:33:58,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:58,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:33:58,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:33:58,095 INFO L87 Difference]: Start difference. First operand 589 states and 986 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 08:33:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:58,323 INFO L93 Difference]: Finished difference Result 1217 states and 2051 transitions. [2023-12-21 08:33:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:33:58,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2023-12-21 08:33:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:58,328 INFO L225 Difference]: With dead ends: 1217 [2023-12-21 08:33:58,328 INFO L226 Difference]: Without dead ends: 633 [2023-12-21 08:33:58,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 08:33:58,334 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 168 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 08:33:58,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2663 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 08:33:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-12-21 08:33:58,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2023-12-21 08:33:58,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 504 states have (on average 1.7222222222222223) internal successors, (868), 522 states have internal predecessors, (868), 102 states have call successors, (102), 28 states have call predecessors, (102), 26 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-21 08:33:58,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1069 transitions. [2023-12-21 08:33:58,355 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1069 transitions. Word has length 86 [2023-12-21 08:33:58,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:58,356 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 1069 transitions. [2023-12-21 08:33:58,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 08:33:58,356 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1069 transitions. [2023-12-21 08:33:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 08:33:58,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:58,358 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:33:58,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 08:33:58,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:58,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:58,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:58,564 INFO L85 PathProgramCache]: Analyzing trace with hash 420352812, now seen corresponding path program 1 times [2023-12-21 08:33:58,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:58,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830459989] [2023-12-21 08:33:58,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:58,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:58,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:58,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:58,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 08:33:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:58,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:59,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 08:33:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:59,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:59,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:33:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:59,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 08:33:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:59,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 08:33:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:59,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 08:33:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 08:33:59,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:59,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830459989] [2023-12-21 08:33:59,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830459989] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:59,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877948846] [2023-12-21 08:33:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:59,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:59,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:59,079 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) [2023-12-21 08:33:59,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 08:33:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:59,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:33:59,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:59,404 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 08:33:59,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:59,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877948846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:59,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:59,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-21 08:33:59,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386448539] [2023-12-21 08:33:59,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:59,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:33:59,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:59,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:33:59,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:33:59,406 INFO L87 Difference]: Start difference. First operand 633 states and 1069 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 08:33:59,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:59,532 INFO L93 Difference]: Finished difference Result 1284 states and 2168 transitions. [2023-12-21 08:33:59,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:33:59,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2023-12-21 08:33:59,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:59,536 INFO L225 Difference]: With dead ends: 1284 [2023-12-21 08:33:59,537 INFO L226 Difference]: Without dead ends: 656 [2023-12-21 08:33:59,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:33:59,540 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 113 mSDsluCounter, 4616 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5559 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:33:59,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5559 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:33:59,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-12-21 08:33:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 645. [2023-12-21 08:33:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 513 states have (on average 1.719298245614035) internal successors, (882), 533 states have internal predecessors, (882), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2023-12-21 08:33:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1089 transitions. [2023-12-21 08:33:59,560 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1089 transitions. Word has length 88 [2023-12-21 08:33:59,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:59,560 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1089 transitions. [2023-12-21 08:33:59,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 08:33:59,561 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1089 transitions. [2023-12-21 08:33:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 08:33:59,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:59,563 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-21 08:33:59,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 08:33:59,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:59,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:59,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1367152669, now seen corresponding path program 1 times [2023-12-21 08:33:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:59,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644707303] [2023-12-21 08:33:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:59,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:59,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:59,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 08:34:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:34:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 08:34:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 08:34:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:34:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 08:34:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 08:34:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:34:00,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:00,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644707303] [2023-12-21 08:34:00,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644707303] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:00,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630496794] [2023-12-21 08:34:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:00,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:00,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:00,265 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) [2023-12-21 08:34:00,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 08:34:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:34:00,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 08:34:00,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:00,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630496794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:00,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:00,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-21 08:34:00,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779738206] [2023-12-21 08:34:00,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:00,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:34:00,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:00,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:34:00,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-21 08:34:00,587 INFO L87 Difference]: Start difference. First operand 645 states and 1089 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 08:34:00,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:00,728 INFO L93 Difference]: Finished difference Result 1302 states and 2197 transitions. [2023-12-21 08:34:00,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:34:00,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2023-12-21 08:34:00,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:00,732 INFO L225 Difference]: With dead ends: 1302 [2023-12-21 08:34:00,732 INFO L226 Difference]: Without dead ends: 664 [2023-12-21 08:34:00,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-21 08:34:00,735 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 124 mSDsluCounter, 4604 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5547 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:00,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5547 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:34:00,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2023-12-21 08:34:00,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 645. [2023-12-21 08:34:00,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 513 states have (on average 1.719298245614035) internal successors, (882), 533 states have internal predecessors, (882), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2023-12-21 08:34:00,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1089 transitions. [2023-12-21 08:34:00,754 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1089 transitions. Word has length 89 [2023-12-21 08:34:00,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:00,754 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1089 transitions. [2023-12-21 08:34:00,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 08:34:00,754 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1089 transitions. [2023-12-21 08:34:00,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 08:34:00,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:00,756 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-21 08:34:00,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 08:34:00,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:00,962 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:00,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:00,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2104098229, now seen corresponding path program 1 times [2023-12-21 08:34:00,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:00,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598257008] [2023-12-21 08:34:00,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:00,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:01,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:01,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 08:34:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:01,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 08:34:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:01,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:01,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:34:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:01,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 08:34:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:01,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:01,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 08:34:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:01,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:34:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:01,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 08:34:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:01,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 08:34:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:01,435 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 08:34:01,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:01,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598257008] [2023-12-21 08:34:01,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598257008] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:01,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100250839] [2023-12-21 08:34:01,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:01,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:01,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:01,437 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) [2023-12-21 08:34:01,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 08:34:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:01,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:34:01,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 08:34:01,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:01,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100250839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:01,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:01,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-21 08:34:01,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506696927] [2023-12-21 08:34:01,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:01,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:34:01,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:01,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:34:01,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 08:34:01,737 INFO L87 Difference]: Start difference. First operand 645 states and 1089 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 08:34:01,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:01,818 INFO L93 Difference]: Finished difference Result 1298 states and 2189 transitions. [2023-12-21 08:34:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:34:01,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2023-12-21 08:34:01,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:01,822 INFO L225 Difference]: With dead ends: 1298 [2023-12-21 08:34:01,822 INFO L226 Difference]: Without dead ends: 656 [2023-12-21 08:34:01,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:34:01,826 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 20 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:01,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2818 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:34:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-12-21 08:34:01,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 654. [2023-12-21 08:34:01,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 521 states have (on average 1.710172744721689) internal successors, (891), 541 states have internal predecessors, (891), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-12-21 08:34:01,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1097 transitions. [2023-12-21 08:34:01,843 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1097 transitions. Word has length 89 [2023-12-21 08:34:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:01,843 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 1097 transitions. [2023-12-21 08:34:01,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 08:34:01,843 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1097 transitions. [2023-12-21 08:34:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 08:34:01,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:01,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:34:01,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 08:34:02,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:02,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:02,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:02,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1792381263, now seen corresponding path program 1 times [2023-12-21 08:34:02,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:02,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70788657] [2023-12-21 08:34:02,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:02,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:02,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:02,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 08:34:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:02,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:02,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:34:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:02,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 08:34:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:02,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 08:34:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:02,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 08:34:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:02,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 08:34:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 08:34:02,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:02,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70788657] [2023-12-21 08:34:02,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70788657] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:02,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129392653] [2023-12-21 08:34:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:02,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:02,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:02,292 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) [2023-12-21 08:34:02,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 08:34:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:02,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:34:02,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:34:02,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:02,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129392653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:02,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:02,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-21 08:34:02,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674990382] [2023-12-21 08:34:02,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:02,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:34:02,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:02,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:34:02,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:34:02,560 INFO L87 Difference]: Start difference. First operand 654 states and 1097 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 08:34:02,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:02,711 INFO L93 Difference]: Finished difference Result 1311 states and 2200 transitions. [2023-12-21 08:34:02,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:34:02,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-12-21 08:34:02,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:02,715 INFO L225 Difference]: With dead ends: 1311 [2023-12-21 08:34:02,715 INFO L226 Difference]: Without dead ends: 675 [2023-12-21 08:34:02,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 08:34:02,718 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 135 mSDsluCounter, 4592 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5535 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:02,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 5535 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:34:02,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-12-21 08:34:02,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 654. [2023-12-21 08:34:02,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 521 states have (on average 1.710172744721689) internal successors, (891), 541 states have internal predecessors, (891), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-12-21 08:34:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1097 transitions. [2023-12-21 08:34:02,735 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1097 transitions. Word has length 78 [2023-12-21 08:34:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:02,736 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 1097 transitions. [2023-12-21 08:34:02,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 08:34:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1097 transitions. [2023-12-21 08:34:02,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 08:34:02,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:02,737 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:34:02,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 08:34:02,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:02,945 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:02,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:02,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2088434483, now seen corresponding path program 1 times [2023-12-21 08:34:02,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:02,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464702096] [2023-12-21 08:34:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:02,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:03,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:03,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:03,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 08:34:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:03,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:34:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:03,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 08:34:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:03,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 08:34:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:03,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 08:34:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:03,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 08:34:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 08:34:03,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:03,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464702096] [2023-12-21 08:34:03,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464702096] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:03,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456175123] [2023-12-21 08:34:03,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:03,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:03,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:03,174 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) [2023-12-21 08:34:03,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 08:34:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:03,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:34:03,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:34:03,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:03,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456175123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:03,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:03,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-12-21 08:34:03,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651363408] [2023-12-21 08:34:03,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:03,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:34:03,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:03,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:34:03,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-21 08:34:03,478 INFO L87 Difference]: Start difference. First operand 654 states and 1097 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 08:34:03,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:03,664 INFO L93 Difference]: Finished difference Result 1313 states and 2203 transitions. [2023-12-21 08:34:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:34:03,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-12-21 08:34:03,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:03,668 INFO L225 Difference]: With dead ends: 1313 [2023-12-21 08:34:03,668 INFO L226 Difference]: Without dead ends: 677 [2023-12-21 08:34:03,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:34:03,671 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 131 mSDsluCounter, 5505 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 6438 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:03,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 6438 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:34:03,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-12-21 08:34:03,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 654. [2023-12-21 08:34:03,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 521 states have (on average 1.710172744721689) internal successors, (891), 541 states have internal predecessors, (891), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-12-21 08:34:03,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1097 transitions. [2023-12-21 08:34:03,688 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1097 transitions. Word has length 78 [2023-12-21 08:34:03,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:03,688 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 1097 transitions. [2023-12-21 08:34:03,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 08:34:03,688 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1097 transitions. [2023-12-21 08:34:03,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 08:34:03,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:03,690 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-21 08:34:03,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 08:34:03,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-21 08:34:03,897 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:03,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:03,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1817890271, now seen corresponding path program 1 times [2023-12-21 08:34:03,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:03,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624197477] [2023-12-21 08:34:03,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:03,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:03,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:04,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:04,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:34:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:04,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:04,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:34:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 08:34:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:04,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:04,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 08:34:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:04,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 08:34:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:04,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 08:34:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:04,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 08:34:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:34:04,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:04,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624197477] [2023-12-21 08:34:04,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624197477] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:04,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132351498] [2023-12-21 08:34:04,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:04,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:04,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:04,410 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) [2023-12-21 08:34:04,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 08:34:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:04,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:34:04,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 08:34:04,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:04,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132351498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:04,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:04,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-21 08:34:04,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050780289] [2023-12-21 08:34:04,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:04,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:34:04,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:04,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:34:04,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-21 08:34:04,726 INFO L87 Difference]: Start difference. First operand 654 states and 1097 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 08:34:04,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:04,895 INFO L93 Difference]: Finished difference Result 1313 states and 2203 transitions. [2023-12-21 08:34:04,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:34:04,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2023-12-21 08:34:04,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:04,899 INFO L225 Difference]: With dead ends: 1313 [2023-12-21 08:34:04,899 INFO L226 Difference]: Without dead ends: 677 [2023-12-21 08:34:04,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:34:04,903 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 141 mSDsluCounter, 5493 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6426 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:04,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6426 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:34:04,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-12-21 08:34:04,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 654. [2023-12-21 08:34:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 521 states have (on average 1.710172744721689) internal successors, (891), 541 states have internal predecessors, (891), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-12-21 08:34:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1097 transitions. [2023-12-21 08:34:04,919 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1097 transitions. Word has length 91 [2023-12-21 08:34:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:04,919 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 1097 transitions. [2023-12-21 08:34:04,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 08:34:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1097 transitions. [2023-12-21 08:34:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 08:34:04,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:04,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:34:04,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 08:34:05,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:05,136 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:05,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:05,136 INFO L85 PathProgramCache]: Analyzing trace with hash 881560, now seen corresponding path program 1 times [2023-12-21 08:34:05,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:05,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858253554] [2023-12-21 08:34:05,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:05,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:05,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:05,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:05,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:34:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:05,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:34:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 08:34:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:05,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 08:34:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:05,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:34:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:05,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 08:34:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 08:34:05,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:05,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858253554] [2023-12-21 08:34:05,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858253554] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:05,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45291729] [2023-12-21 08:34:05,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:05,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:05,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:05,379 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) [2023-12-21 08:34:05,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 08:34:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:05,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:34:05,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:34:05,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:05,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45291729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:05,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:05,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-12-21 08:34:05,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272155521] [2023-12-21 08:34:05,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:05,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:34:05,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:05,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:34:05,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-21 08:34:05,690 INFO L87 Difference]: Start difference. First operand 654 states and 1097 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 08:34:05,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:05,903 INFO L93 Difference]: Finished difference Result 1305 states and 2189 transitions. [2023-12-21 08:34:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:34:05,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 80 [2023-12-21 08:34:05,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:05,906 INFO L225 Difference]: With dead ends: 1305 [2023-12-21 08:34:05,906 INFO L226 Difference]: Without dead ends: 669 [2023-12-21 08:34:05,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:34:05,909 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 151 mSDsluCounter, 5481 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 6414 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:05,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 6414 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 08:34:05,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2023-12-21 08:34:05,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 654. [2023-12-21 08:34:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 521 states have (on average 1.710172744721689) internal successors, (891), 541 states have internal predecessors, (891), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-12-21 08:34:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1097 transitions. [2023-12-21 08:34:05,924 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1097 transitions. Word has length 80 [2023-12-21 08:34:05,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:05,925 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 1097 transitions. [2023-12-21 08:34:05,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 08:34:05,925 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1097 transitions. [2023-12-21 08:34:05,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 08:34:05,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:05,926 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:34:05,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 08:34:06,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 08:34:06,132 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:06,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:06,133 INFO L85 PathProgramCache]: Analyzing trace with hash -575646602, now seen corresponding path program 1 times [2023-12-21 08:34:06,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:06,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763987347] [2023-12-21 08:34:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:06,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:06,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:34:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:34:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:06,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:34:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:06,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 08:34:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:06,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 08:34:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:06,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:34:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:06,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 08:34:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:06,331 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 08:34:06,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:06,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763987347] [2023-12-21 08:34:06,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763987347] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:06,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016349544] [2023-12-21 08:34:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:06,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:06,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:06,332 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) [2023-12-21 08:34:06,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 08:34:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:06,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:34:06,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 08:34:06,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:06,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016349544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:06,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:06,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-21 08:34:06,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912995932] [2023-12-21 08:34:06,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:06,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:34:06,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:06,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:34:06,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 08:34:06,581 INFO L87 Difference]: Start difference. First operand 654 states and 1097 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-21 08:34:06,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:06,647 INFO L93 Difference]: Finished difference Result 1279 states and 2151 transitions. [2023-12-21 08:34:06,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:34:06,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2023-12-21 08:34:06,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:06,652 INFO L225 Difference]: With dead ends: 1279 [2023-12-21 08:34:06,653 INFO L226 Difference]: Without dead ends: 654 [2023-12-21 08:34:06,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:34:06,656 INFO L413 NwaCegarLoop]: 941 mSDtfsCounter, 35 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:06,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2816 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:34:06,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2023-12-21 08:34:06,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2023-12-21 08:34:06,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 521 states have (on average 1.7005758157389634) internal successors, (886), 541 states have internal predecessors, (886), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-12-21 08:34:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1092 transitions. [2023-12-21 08:34:06,673 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1092 transitions. Word has length 80 [2023-12-21 08:34:06,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:06,673 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 1092 transitions. [2023-12-21 08:34:06,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-21 08:34:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1092 transitions. [2023-12-21 08:34:06,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 08:34:06,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:06,676 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:34:06,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 08:34:06,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-21 08:34:06,882 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:06,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:06,882 INFO L85 PathProgramCache]: Analyzing trace with hash -636420371, now seen corresponding path program 1 times [2023-12-21 08:34:06,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:06,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672836380] [2023-12-21 08:34:06,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:06,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:06,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:34:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:07,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:34:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:07,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:07,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:07,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 08:34:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:07,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:34:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:34:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:07,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 08:34:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 08:34:07,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:07,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672836380] [2023-12-21 08:34:07,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672836380] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:07,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919585943] [2023-12-21 08:34:07,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:07,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:07,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:07,066 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) [2023-12-21 08:34:07,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 08:34:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:07,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:34:07,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 08:34:07,316 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:07,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919585943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:07,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:07,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:34:07,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441941518] [2023-12-21 08:34:07,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:07,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:34:07,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:07,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:34:07,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:34:07,318 INFO L87 Difference]: Start difference. First operand 654 states and 1092 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-21 08:34:07,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:07,491 INFO L93 Difference]: Finished difference Result 1275 states and 2142 transitions. [2023-12-21 08:34:07,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:34:07,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2023-12-21 08:34:07,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:07,495 INFO L225 Difference]: With dead ends: 1275 [2023-12-21 08:34:07,495 INFO L226 Difference]: Without dead ends: 706 [2023-12-21 08:34:07,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:34:07,498 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 239 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:07,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2652 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:34:07,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2023-12-21 08:34:07,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 698. [2023-12-21 08:34:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 564 states have (on average 1.7180851063829787) internal successors, (969), 584 states have internal predecessors, (969), 103 states have call successors, (103), 30 states have call predecessors, (103), 30 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2023-12-21 08:34:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1174 transitions. [2023-12-21 08:34:07,516 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1174 transitions. Word has length 81 [2023-12-21 08:34:07,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:07,517 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 1174 transitions. [2023-12-21 08:34:07,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-21 08:34:07,517 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1174 transitions. [2023-12-21 08:34:07,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 08:34:07,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:07,519 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-21 08:34:07,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-21 08:34:07,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-21 08:34:07,725 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:07,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:07,726 INFO L85 PathProgramCache]: Analyzing trace with hash 704601405, now seen corresponding path program 1 times [2023-12-21 08:34:07,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:07,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477022309] [2023-12-21 08:34:07,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:07,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:07,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:07,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:34:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:07,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:34:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:07,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:07,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 08:34:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:34:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 08:34:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 08:34:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 08:34:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 08:34:08,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:08,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477022309] [2023-12-21 08:34:08,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477022309] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:08,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675018837] [2023-12-21 08:34:08,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:08,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:08,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:08,112 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) [2023-12-21 08:34:08,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 08:34:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:34:08,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 08:34:08,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:08,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675018837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:08,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:08,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-12-21 08:34:08,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391901534] [2023-12-21 08:34:08,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:08,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:34:08,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:08,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:34:08,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:34:08,439 INFO L87 Difference]: Start difference. First operand 698 states and 1174 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 08:34:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:08,564 INFO L93 Difference]: Finished difference Result 1299 states and 2176 transitions. [2023-12-21 08:34:08,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:34:08,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2023-12-21 08:34:08,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:08,568 INFO L225 Difference]: With dead ends: 1299 [2023-12-21 08:34:08,568 INFO L226 Difference]: Without dead ends: 730 [2023-12-21 08:34:08,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:34:08,571 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 113 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5560 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:08,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5560 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:34:08,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-12-21 08:34:08,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 710. [2023-12-21 08:34:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 573 states have (on average 1.7155322862129145) internal successors, (983), 595 states have internal predecessors, (983), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-12-21 08:34:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1192 transitions. [2023-12-21 08:34:08,587 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1192 transitions. Word has length 94 [2023-12-21 08:34:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:08,588 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1192 transitions. [2023-12-21 08:34:08,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 08:34:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1192 transitions. [2023-12-21 08:34:08,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 08:34:08,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:08,590 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:34:08,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 08:34:08,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 08:34:08,797 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:08,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:08,797 INFO L85 PathProgramCache]: Analyzing trace with hash -447773209, now seen corresponding path program 1 times [2023-12-21 08:34:08,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:08,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742278485] [2023-12-21 08:34:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:08,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:34:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:34:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 08:34:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 08:34:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 08:34:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 08:34:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 08:34:08,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:08,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742278485] [2023-12-21 08:34:08,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742278485] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:08,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062909589] [2023-12-21 08:34:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:08,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:08,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:08,972 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) [2023-12-21 08:34:08,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 08:34:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:09,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:34:09,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 08:34:09,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:09,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062909589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:09,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:09,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2023-12-21 08:34:09,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288476018] [2023-12-21 08:34:09,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:09,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:34:09,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:09,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:34:09,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:34:09,248 INFO L87 Difference]: Start difference. First operand 710 states and 1192 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 08:34:09,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:09,373 INFO L93 Difference]: Finished difference Result 1307 states and 2189 transitions. [2023-12-21 08:34:09,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:34:09,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 83 [2023-12-21 08:34:09,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:09,377 INFO L225 Difference]: With dead ends: 1307 [2023-12-21 08:34:09,378 INFO L226 Difference]: Without dead ends: 738 [2023-12-21 08:34:09,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:34:09,381 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 124 mSDsluCounter, 4605 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5548 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:09,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5548 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:34:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2023-12-21 08:34:09,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 710. [2023-12-21 08:34:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 573 states have (on average 1.7155322862129145) internal successors, (983), 595 states have internal predecessors, (983), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-12-21 08:34:09,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1192 transitions. [2023-12-21 08:34:09,396 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1192 transitions. Word has length 83 [2023-12-21 08:34:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:09,397 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1192 transitions. [2023-12-21 08:34:09,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 08:34:09,397 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1192 transitions. [2023-12-21 08:34:09,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 08:34:09,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:09,399 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:34:09,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 08:34:09,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:09,605 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:09,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:09,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1070512487, now seen corresponding path program 1 times [2023-12-21 08:34:09,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:09,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394345427] [2023-12-21 08:34:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:09,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:34:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:34:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:09,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:09,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:09,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 08:34:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:09,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 08:34:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:09,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 08:34:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:09,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 08:34:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 08:34:09,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:09,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394345427] [2023-12-21 08:34:09,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394345427] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:09,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400360972] [2023-12-21 08:34:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:09,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:09,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:09,765 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) [2023-12-21 08:34:09,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 08:34:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:09,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:34:09,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 08:34:10,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:10,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400360972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:10,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:10,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2023-12-21 08:34:10,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581766093] [2023-12-21 08:34:10,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:10,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:34:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:10,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:34:10,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:34:10,064 INFO L87 Difference]: Start difference. First operand 710 states and 1192 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 08:34:10,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:10,230 INFO L93 Difference]: Finished difference Result 1309 states and 2191 transitions. [2023-12-21 08:34:10,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:34:10,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 83 [2023-12-21 08:34:10,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:10,234 INFO L225 Difference]: With dead ends: 1309 [2023-12-21 08:34:10,234 INFO L226 Difference]: Without dead ends: 740 [2023-12-21 08:34:10,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-21 08:34:10,237 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 132 mSDsluCounter, 5506 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6439 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:10,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6439 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:34:10,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2023-12-21 08:34:10,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 710. [2023-12-21 08:34:10,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 573 states have (on average 1.7155322862129145) internal successors, (983), 595 states have internal predecessors, (983), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-12-21 08:34:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1192 transitions. [2023-12-21 08:34:10,255 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1192 transitions. Word has length 83 [2023-12-21 08:34:10,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:10,255 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1192 transitions. [2023-12-21 08:34:10,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 08:34:10,255 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1192 transitions. [2023-12-21 08:34:10,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 08:34:10,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:10,257 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:34:10,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 08:34:10,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 08:34:10,463 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:10,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:10,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1360344200, now seen corresponding path program 1 times [2023-12-21 08:34:10,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:10,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852545305] [2023-12-21 08:34:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:10,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:10,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:10,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:34:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:10,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:34:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:10,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:10,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 08:34:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:10,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 08:34:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:10,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:10,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:34:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 08:34:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:10,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 08:34:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:10,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 08:34:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 08:34:10,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:10,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852545305] [2023-12-21 08:34:10,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852545305] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:10,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126200480] [2023-12-21 08:34:10,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:10,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:10,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:10,893 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) [2023-12-21 08:34:10,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 08:34:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:11,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:34:11,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 08:34:11,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:11,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126200480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:11,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:11,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:34:11,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139476706] [2023-12-21 08:34:11,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:11,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:34:11,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:11,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:34:11,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:34:11,155 INFO L87 Difference]: Start difference. First operand 710 states and 1192 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 08:34:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:11,224 INFO L93 Difference]: Finished difference Result 1351 states and 2270 transitions. [2023-12-21 08:34:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 08:34:11,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 95 [2023-12-21 08:34:11,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:11,228 INFO L225 Difference]: With dead ends: 1351 [2023-12-21 08:34:11,228 INFO L226 Difference]: Without dead ends: 710 [2023-12-21 08:34:11,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:34:11,230 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 10 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:11,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2818 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:34:11,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-12-21 08:34:11,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 710. [2023-12-21 08:34:11,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 573 states have (on average 1.7102966841186737) internal successors, (980), 595 states have internal predecessors, (980), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-12-21 08:34:11,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1189 transitions. [2023-12-21 08:34:11,246 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1189 transitions. Word has length 95 [2023-12-21 08:34:11,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:11,246 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1189 transitions. [2023-12-21 08:34:11,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 08:34:11,247 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1189 transitions. [2023-12-21 08:34:11,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 08:34:11,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:11,248 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-21 08:34:11,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-21 08:34:11,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 08:34:11,455 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:11,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:11,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1456654075, now seen corresponding path program 1 times [2023-12-21 08:34:11,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:11,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490362351] [2023-12-21 08:34:11,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:11,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:11,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:11,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:34:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:11,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:34:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:11,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:11,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:11,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 08:34:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:11,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:11,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 08:34:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:11,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 08:34:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:11,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 08:34:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:11,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 08:34:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 08:34:11,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:11,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490362351] [2023-12-21 08:34:11,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490362351] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:11,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119630359] [2023-12-21 08:34:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:11,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:11,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:11,866 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) [2023-12-21 08:34:11,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 08:34:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:12,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:34:12,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 08:34:12,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:12,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119630359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:12,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:12,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-12-21 08:34:12,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923106778] [2023-12-21 08:34:12,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:12,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:34:12,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:12,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:34:12,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:34:12,170 INFO L87 Difference]: Start difference. First operand 710 states and 1189 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 08:34:12,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:12,353 INFO L93 Difference]: Finished difference Result 1301 states and 2175 transitions. [2023-12-21 08:34:12,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:34:12,354 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2023-12-21 08:34:12,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:12,357 INFO L225 Difference]: With dead ends: 1301 [2023-12-21 08:34:12,357 INFO L226 Difference]: Without dead ends: 732 [2023-12-21 08:34:12,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-21 08:34:12,359 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 142 mSDsluCounter, 5479 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 6409 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:12,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 6409 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:34:12,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2023-12-21 08:34:12,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 710. [2023-12-21 08:34:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 573 states have (on average 1.7102966841186737) internal successors, (980), 595 states have internal predecessors, (980), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-12-21 08:34:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1189 transitions. [2023-12-21 08:34:12,375 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1189 transitions. Word has length 96 [2023-12-21 08:34:12,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:12,375 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1189 transitions. [2023-12-21 08:34:12,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 08:34:12,375 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1189 transitions. [2023-12-21 08:34:12,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 08:34:12,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:12,377 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-21 08:34:12,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 08:34:12,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 08:34:12,584 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:12,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:12,584 INFO L85 PathProgramCache]: Analyzing trace with hash -353947167, now seen corresponding path program 1 times [2023-12-21 08:34:12,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:12,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700288386] [2023-12-21 08:34:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:12,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:12,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:34:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:12,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:34:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:12,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:12,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:12,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 08:34:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:12,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:12,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 08:34:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:12,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 08:34:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:12,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 08:34:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:12,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 08:34:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:12,993 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 08:34:12,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:12,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700288386] [2023-12-21 08:34:12,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700288386] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:12,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766951633] [2023-12-21 08:34:12,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:12,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:12,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:12,995 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) [2023-12-21 08:34:12,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 08:34:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:13,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 08:34:13,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 08:34:13,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:13,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766951633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:13,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:13,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-12-21 08:34:13,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388345266] [2023-12-21 08:34:13,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:13,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:34:13,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:13,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:34:13,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:34:13,380 INFO L87 Difference]: Start difference. First operand 710 states and 1189 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 08:34:16,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:16,211 INFO L93 Difference]: Finished difference Result 2456 states and 4147 transitions. [2023-12-21 08:34:16,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:34:16,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2023-12-21 08:34:16,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:16,223 INFO L225 Difference]: With dead ends: 2456 [2023-12-21 08:34:16,223 INFO L226 Difference]: Without dead ends: 1891 [2023-12-21 08:34:16,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:34:16,226 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 3099 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 3616 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3293 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 4139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 3616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:16,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3293 Valid, 1304 Invalid, 4139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 3616 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 08:34:16,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2023-12-21 08:34:16,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1724. [2023-12-21 08:34:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1385 states have (on average 1.7010830324909747) internal successors, (2356), 1423 states have internal predecessors, (2356), 269 states have call successors, (269), 66 states have call predecessors, (269), 69 states have return successors, (290), 249 states have call predecessors, (290), 265 states have call successors, (290) [2023-12-21 08:34:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2915 transitions. [2023-12-21 08:34:16,282 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2915 transitions. Word has length 97 [2023-12-21 08:34:16,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:16,282 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2915 transitions. [2023-12-21 08:34:16,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 08:34:16,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2915 transitions. [2023-12-21 08:34:16,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 08:34:16,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:16,286 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:34:16,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 08:34:16,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 08:34:16,492 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:16,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:16,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1565940516, now seen corresponding path program 1 times [2023-12-21 08:34:16,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:16,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907659469] [2023-12-21 08:34:16,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:16,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:16,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:16,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:34:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:16,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:34:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:16,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:16,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:16,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 08:34:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:16,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:34:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:16,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:34:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:16,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:34:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:16,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 08:34:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:16,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 08:34:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:16,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 08:34:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:16,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 08:34:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 08:34:16,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:16,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907659469] [2023-12-21 08:34:16,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907659469] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:16,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562323120] [2023-12-21 08:34:16,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:16,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:16,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:16,911 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) [2023-12-21 08:34:16,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 08:34:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:17,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:34:17,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 08:34:17,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:17,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562323120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:17,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:17,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-21 08:34:17,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869231754] [2023-12-21 08:34:17,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:17,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 08:34:17,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:17,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 08:34:17,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 08:34:17,212 INFO L87 Difference]: Start difference. First operand 1724 states and 2915 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 08:34:17,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:17,347 INFO L93 Difference]: Finished difference Result 4865 states and 8322 transitions. [2023-12-21 08:34:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 08:34:17,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2023-12-21 08:34:17,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:17,367 INFO L225 Difference]: With dead ends: 4865 [2023-12-21 08:34:17,367 INFO L226 Difference]: Without dead ends: 3287 [2023-12-21 08:34:17,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 08:34:17,376 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 968 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:17,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 1897 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:34:17,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2023-12-21 08:34:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 3268. [2023-12-21 08:34:17,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3268 states, 2623 states have (on average 1.700343118566527) internal successors, (4460), 2690 states have internal predecessors, (4460), 515 states have call successors, (515), 123 states have call predecessors, (515), 129 states have return successors, (591), 484 states have call predecessors, (591), 509 states have call successors, (591) [2023-12-21 08:34:17,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 5566 transitions. [2023-12-21 08:34:17,496 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 5566 transitions. Word has length 121 [2023-12-21 08:34:17,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:17,497 INFO L495 AbstractCegarLoop]: Abstraction has 3268 states and 5566 transitions. [2023-12-21 08:34:17,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 08:34:17,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 5566 transitions. [2023-12-21 08:34:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 08:34:17,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:17,501 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:34:17,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 08:34:17,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:17,708 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:17,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:17,708 INFO L85 PathProgramCache]: Analyzing trace with hash 377225537, now seen corresponding path program 1 times [2023-12-21 08:34:17,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:17,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079506322] [2023-12-21 08:34:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:17,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:17,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:34:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:17,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:34:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:17,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:17,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 08:34:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:18,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 08:34:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:18,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:34:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:18,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:34:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:18,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 08:34:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:18,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 08:34:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:18,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 08:34:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:18,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 08:34:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:18,118 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 08:34:18,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:18,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079506322] [2023-12-21 08:34:18,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079506322] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:18,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180661203] [2023-12-21 08:34:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:18,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:18,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:18,119 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) [2023-12-21 08:34:18,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 08:34:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:18,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 08:34:18,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 08:34:18,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:18,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180661203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:18,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:18,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-12-21 08:34:18,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33334796] [2023-12-21 08:34:18,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:18,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:34:18,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:18,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:34:18,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 08:34:18,388 INFO L87 Difference]: Start difference. First operand 3268 states and 5566 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 08:34:18,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:18,526 INFO L93 Difference]: Finished difference Result 6518 states and 11117 transitions. [2023-12-21 08:34:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:34:18,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2023-12-21 08:34:18,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:18,541 INFO L225 Difference]: With dead ends: 6518 [2023-12-21 08:34:18,541 INFO L226 Difference]: Without dead ends: 3234 [2023-12-21 08:34:18,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 08:34:18,552 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 13 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2817 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:18,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2817 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:34:18,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3234 states. [2023-12-21 08:34:18,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3234 to 3234. [2023-12-21 08:34:18,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 2592 states have (on average 1.6944444444444444) internal successors, (4392), 2657 states have internal predecessors, (4392), 514 states have call successors, (514), 123 states have call predecessors, (514), 127 states have return successors, (588), 483 states have call predecessors, (588), 508 states have call successors, (588) [2023-12-21 08:34:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 5494 transitions. [2023-12-21 08:34:18,646 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 5494 transitions. Word has length 122 [2023-12-21 08:34:18,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:18,646 INFO L495 AbstractCegarLoop]: Abstraction has 3234 states and 5494 transitions. [2023-12-21 08:34:18,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 08:34:18,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 5494 transitions. [2023-12-21 08:34:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 08:34:18,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:18,651 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:34:18,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 08:34:18,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:18,858 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:18,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:18,858 INFO L85 PathProgramCache]: Analyzing trace with hash -526963823, now seen corresponding path program 1 times [2023-12-21 08:34:18,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:18,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907027142] [2023-12-21 08:34:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:18,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:18,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:19,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:19,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 08:34:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:19,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:19,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 08:34:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 08:34:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:19,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:19,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:34:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:34:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 08:34:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:19,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 08:34:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:19,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 08:34:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:19,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 08:34:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:19,377 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 08:34:19,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:19,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907027142] [2023-12-21 08:34:19,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907027142] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:19,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317106788] [2023-12-21 08:34:19,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:19,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:19,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:19,379 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) [2023-12-21 08:34:19,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 08:34:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:19,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 1592 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 08:34:19,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 08:34:19,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:19,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317106788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:19,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:19,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2023-12-21 08:34:19,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059269951] [2023-12-21 08:34:19,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:19,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:34:19,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:19,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:34:19,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:34:19,694 INFO L87 Difference]: Start difference. First operand 3234 states and 5494 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 08:34:19,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:19,899 INFO L93 Difference]: Finished difference Result 8225 states and 14004 transitions. [2023-12-21 08:34:19,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:34:19,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2023-12-21 08:34:19,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:19,922 INFO L225 Difference]: With dead ends: 8225 [2023-12-21 08:34:19,922 INFO L226 Difference]: Without dead ends: 5102 [2023-12-21 08:34:19,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:34:19,933 INFO L413 NwaCegarLoop]: 1014 mSDtfsCounter, 1009 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:19,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 2600 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:34:19,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2023-12-21 08:34:20,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5094. [2023-12-21 08:34:20,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 4076 states have (on average 1.6692836113837095) internal successors, (6804), 4141 states have internal predecessors, (6804), 806 states have call successors, (806), 195 states have call predecessors, (806), 211 states have return successors, (1002), 785 states have call predecessors, (1002), 796 states have call successors, (1002) [2023-12-21 08:34:20,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 8612 transitions. [2023-12-21 08:34:20,080 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 8612 transitions. Word has length 122 [2023-12-21 08:34:20,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:20,081 INFO L495 AbstractCegarLoop]: Abstraction has 5094 states and 8612 transitions. [2023-12-21 08:34:20,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 08:34:20,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 8612 transitions. [2023-12-21 08:34:20,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 08:34:20,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:20,086 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:34:20,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-21 08:34:20,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:20,293 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:20,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:20,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1972684466, now seen corresponding path program 1 times [2023-12-21 08:34:20,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:20,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535578391] [2023-12-21 08:34:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:20,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:20,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:20,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 08:34:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:20,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:20,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:20,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 08:34:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:20,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 08:34:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:20,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:20,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:34:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:20,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:34:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:20,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 08:34:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:20,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 08:34:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:20,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 08:34:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:20,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 08:34:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 08:34:20,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:20,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535578391] [2023-12-21 08:34:20,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535578391] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:20,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300638335] [2023-12-21 08:34:20,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:20,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:20,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:20,766 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) [2023-12-21 08:34:20,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 08:34:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:21,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 1592 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 08:34:21,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:34:21,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:34:21,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300638335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:21,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:34:21,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 12 [2023-12-21 08:34:21,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545662875] [2023-12-21 08:34:21,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:21,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:34:21,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:21,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:34:21,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:34:21,114 INFO L87 Difference]: Start difference. First operand 5094 states and 8612 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 08:34:21,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:21,351 INFO L93 Difference]: Finished difference Result 10242 states and 17310 transitions. [2023-12-21 08:34:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:34:21,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2023-12-21 08:34:21,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:21,374 INFO L225 Difference]: With dead ends: 10242 [2023-12-21 08:34:21,375 INFO L226 Difference]: Without dead ends: 5161 [2023-12-21 08:34:21,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:34:21,394 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 134 mSDsluCounter, 4596 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5546 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:21,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5546 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:34:21,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5161 states. [2023-12-21 08:34:21,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5161 to 5087. [2023-12-21 08:34:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5087 states, 4069 states have (on average 1.6682231506512657) internal successors, (6788), 4134 states have internal predecessors, (6788), 806 states have call successors, (806), 195 states have call predecessors, (806), 211 states have return successors, (1002), 785 states have call predecessors, (1002), 796 states have call successors, (1002) [2023-12-21 08:34:21,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5087 states to 5087 states and 8596 transitions. [2023-12-21 08:34:21,539 INFO L78 Accepts]: Start accepts. Automaton has 5087 states and 8596 transitions. Word has length 123 [2023-12-21 08:34:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:21,539 INFO L495 AbstractCegarLoop]: Abstraction has 5087 states and 8596 transitions. [2023-12-21 08:34:21,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 08:34:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 5087 states and 8596 transitions. [2023-12-21 08:34:21,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-21 08:34:21,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:21,545 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-21 08:34:21,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-21 08:34:21,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:21,752 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:21,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:21,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1334287551, now seen corresponding path program 1 times [2023-12-21 08:34:21,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:21,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458793436] [2023-12-21 08:34:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:21,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:21,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:21,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:21,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:34:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:21,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 08:34:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:34:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:34:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:34:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 08:34:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 08:34:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 08:34:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:34:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:34:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 08:34:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 08:34:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 08:34:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-21 08:34:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 08:34:22,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:22,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458793436] [2023-12-21 08:34:22,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458793436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:22,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:34:22,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 08:34:22,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486008731] [2023-12-21 08:34:22,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:22,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:34:22,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:22,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:34:22,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 08:34:22,520 INFO L87 Difference]: Start difference. First operand 5087 states and 8596 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 08:34:28,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:28,295 INFO L93 Difference]: Finished difference Result 12185 states and 20787 transitions. [2023-12-21 08:34:28,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 08:34:28,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 173 [2023-12-21 08:34:28,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:28,328 INFO L225 Difference]: With dead ends: 12185 [2023-12-21 08:34:28,328 INFO L226 Difference]: Without dead ends: 7194 [2023-12-21 08:34:28,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-21 08:34:28,343 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1659 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 3362 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 3763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 3362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:28,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 1467 Invalid, 3763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 3362 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-21 08:34:28,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7194 states. [2023-12-21 08:34:28,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7194 to 5275. [2023-12-21 08:34:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 4211 states have (on average 1.6625504630729042) internal successors, (7001), 4276 states have internal predecessors, (7001), 842 states have call successors, (842), 195 states have call predecessors, (842), 221 states have return successors, (1062), 825 states have call predecessors, (1062), 832 states have call successors, (1062) [2023-12-21 08:34:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 8905 transitions. [2023-12-21 08:34:29,013 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 8905 transitions. Word has length 173 [2023-12-21 08:34:29,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:29,014 INFO L495 AbstractCegarLoop]: Abstraction has 5275 states and 8905 transitions. [2023-12-21 08:34:29,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 08:34:29,014 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 8905 transitions. [2023-12-21 08:34:29,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-21 08:34:29,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:29,019 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 08:34:29,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 08:34:29,019 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:29,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:29,020 INFO L85 PathProgramCache]: Analyzing trace with hash 986996477, now seen corresponding path program 1 times [2023-12-21 08:34:29,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:29,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934499502] [2023-12-21 08:34:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:29,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:34:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:34:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 08:34:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:34:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:34:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:34:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 08:34:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 08:34:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 08:34:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:34:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:34:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 08:34:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 08:34:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 08:34:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-21 08:34:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:29,726 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 08:34:29,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:29,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934499502] [2023-12-21 08:34:29,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934499502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:29,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:34:29,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 08:34:29,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406351711] [2023-12-21 08:34:29,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:29,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:34:29,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:29,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:34:29,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 08:34:29,729 INFO L87 Difference]: Start difference. First operand 5275 states and 8905 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 08:34:35,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:35,201 INFO L93 Difference]: Finished difference Result 12346 states and 21032 transitions. [2023-12-21 08:34:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 08:34:35,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 173 [2023-12-21 08:34:35,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:35,227 INFO L225 Difference]: With dead ends: 12346 [2023-12-21 08:34:35,227 INFO L226 Difference]: Without dead ends: 7076 [2023-12-21 08:34:35,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:34:35,242 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 2096 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 3182 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 3743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 3182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:35,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2189 Valid, 1427 Invalid, 3743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [561 Valid, 3182 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-21 08:34:35,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7076 states. [2023-12-21 08:34:35,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7076 to 5248. [2023-12-21 08:34:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5248 states, 4187 states have (on average 1.6613326964413662) internal successors, (6956), 4250 states have internal predecessors, (6956), 841 states have call successors, (841), 195 states have call predecessors, (841), 219 states have return successors, (1059), 824 states have call predecessors, (1059), 831 states have call successors, (1059) [2023-12-21 08:34:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5248 states to 5248 states and 8856 transitions. [2023-12-21 08:34:35,912 INFO L78 Accepts]: Start accepts. Automaton has 5248 states and 8856 transitions. Word has length 173 [2023-12-21 08:34:35,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:35,912 INFO L495 AbstractCegarLoop]: Abstraction has 5248 states and 8856 transitions. [2023-12-21 08:34:35,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 08:34:35,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5248 states and 8856 transitions. [2023-12-21 08:34:35,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-21 08:34:35,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:35,917 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-21 08:34:35,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 08:34:35,918 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:35,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:35,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1845105448, now seen corresponding path program 1 times [2023-12-21 08:34:35,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:35,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817756843] [2023-12-21 08:34:35,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:35,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:34:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 08:34:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:34:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:34:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:34:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 08:34:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 08:34:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 08:34:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:34:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:34:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 08:34:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 08:34:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-21 08:34:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 08:34:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 08:34:36,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:36,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817756843] [2023-12-21 08:34:36,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817756843] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:34:36,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826630271] [2023-12-21 08:34:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:36,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:34:36,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:34:36,804 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) [2023-12-21 08:34:36,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 08:34:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:37,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 2182 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:34:37,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:34:37,255 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 08:34:37,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 08:34:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 08:34:37,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826630271] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 08:34:37,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 08:34:37,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 19 [2023-12-21 08:34:37,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502785715] [2023-12-21 08:34:37,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 08:34:37,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 08:34:37,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:37,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 08:34:37,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-21 08:34:37,564 INFO L87 Difference]: Start difference. First operand 5248 states and 8856 transitions. Second operand has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 13 states have internal predecessors, (143), 7 states have call successors, (40), 9 states have call predecessors, (40), 7 states have return successors, (38), 10 states have call predecessors, (38), 7 states have call successors, (38) [2023-12-21 08:35:26,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:35:26,153 INFO L93 Difference]: Finished difference Result 28259 states and 50743 transitions. [2023-12-21 08:35:26,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2023-12-21 08:35:26,154 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 13 states have internal predecessors, (143), 7 states have call successors, (40), 9 states have call predecessors, (40), 7 states have return successors, (38), 10 states have call predecessors, (38), 7 states have call successors, (38) Word has length 174 [2023-12-21 08:35:26,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:35:26,242 INFO L225 Difference]: With dead ends: 28259 [2023-12-21 08:35:26,242 INFO L226 Difference]: Without dead ends: 23093 [2023-12-21 08:35:26,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 448 SyntacticMatches, 5 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7982 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=2463, Invalid=17277, Unknown=0, NotChecked=0, Total=19740 [2023-12-21 08:35:26,277 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 20066 mSDsluCounter, 8204 mSDsCounter, 0 mSdLazyCounter, 28229 mSolverCounterSat, 7113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20146 SdHoareTripleChecker+Valid, 9052 SdHoareTripleChecker+Invalid, 35342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 7113 IncrementalHoareTripleChecker+Valid, 28229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:35:26,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20146 Valid, 9052 Invalid, 35342 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [7113 Valid, 28229 Invalid, 0 Unknown, 0 Unchecked, 26.1s Time] [2023-12-21 08:35:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23093 states. [2023-12-21 08:35:28,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23093 to 13598. [2023-12-21 08:35:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13598 states, 10733 states have (on average 1.6146464175906083) internal successors, (17330), 10915 states have internal predecessors, (17330), 2214 states have call successors, (2214), 531 states have call predecessors, (2214), 650 states have return successors, (3336), 2217 states have call predecessors, (3336), 2193 states have call successors, (3336) [2023-12-21 08:35:28,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13598 states to 13598 states and 22880 transitions. [2023-12-21 08:35:28,449 INFO L78 Accepts]: Start accepts. Automaton has 13598 states and 22880 transitions. Word has length 174 [2023-12-21 08:35:28,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:35:28,449 INFO L495 AbstractCegarLoop]: Abstraction has 13598 states and 22880 transitions. [2023-12-21 08:35:28,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 13 states have internal predecessors, (143), 7 states have call successors, (40), 9 states have call predecessors, (40), 7 states have return successors, (38), 10 states have call predecessors, (38), 7 states have call successors, (38) [2023-12-21 08:35:28,450 INFO L276 IsEmpty]: Start isEmpty. Operand 13598 states and 22880 transitions. [2023-12-21 08:35:28,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 08:35:28,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:35:28,453 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:35:28,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-21 08:35:28,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:35:28,660 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:35:28,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:35:28,660 INFO L85 PathProgramCache]: Analyzing trace with hash 41669203, now seen corresponding path program 1 times [2023-12-21 08:35:28,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:35:28,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662744417] [2023-12-21 08:35:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:35:28,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:35:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:28,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:35:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:28,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:35:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:28,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:35:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:28,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:35:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:28,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:35:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:28,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:35:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:29,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:35:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:29,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:35:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:29,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:35:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-21 08:35:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:29,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:35:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:29,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 08:35:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 08:35:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:29,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 08:35:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 08:35:29,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:35:29,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662744417] [2023-12-21 08:35:29,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662744417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:35:29,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:35:29,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 08:35:29,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592887318] [2023-12-21 08:35:29,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:35:29,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 08:35:29,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:35:29,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 08:35:29,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:35:29,141 INFO L87 Difference]: Start difference. First operand 13598 states and 22880 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 08:35:44,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:35:44,582 INFO L93 Difference]: Finished difference Result 43128 states and 79876 transitions. [2023-12-21 08:35:44,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 08:35:44,583 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 126 [2023-12-21 08:35:44,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:35:44,845 INFO L225 Difference]: With dead ends: 43128 [2023-12-21 08:35:44,845 INFO L226 Difference]: Without dead ends: 29611 [2023-12-21 08:35:44,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2023-12-21 08:35:44,909 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 2775 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 7468 mSolverCounterSat, 793 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2863 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 8261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 793 IncrementalHoareTripleChecker+Valid, 7468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:35:44,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2863 Valid, 3198 Invalid, 8261 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [793 Valid, 7468 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-21 08:35:44,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29611 states. [2023-12-21 08:35:48,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29611 to 22023. [2023-12-21 08:35:48,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22023 states, 17344 states have (on average 1.6002075645756457) internal successors, (27754), 17629 states have internal predecessors, (27754), 3597 states have call successors, (3597), 869 states have call predecessors, (3597), 1081 states have return successors, (6570), 3656 states have call predecessors, (6570), 3567 states have call successors, (6570) [2023-12-21 08:35:48,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22023 states to 22023 states and 37921 transitions. [2023-12-21 08:35:48,378 INFO L78 Accepts]: Start accepts. Automaton has 22023 states and 37921 transitions. Word has length 126 [2023-12-21 08:35:48,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:35:48,378 INFO L495 AbstractCegarLoop]: Abstraction has 22023 states and 37921 transitions. [2023-12-21 08:35:48,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 08:35:48,378 INFO L276 IsEmpty]: Start isEmpty. Operand 22023 states and 37921 transitions. [2023-12-21 08:35:48,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-21 08:35:48,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:35:48,381 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:35:48,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 08:35:48,382 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:35:48,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:35:48,382 INFO L85 PathProgramCache]: Analyzing trace with hash -244747296, now seen corresponding path program 1 times [2023-12-21 08:35:48,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:35:48,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192117287] [2023-12-21 08:35:48,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:35:48,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:35:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:48,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:35:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:48,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:35:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:48,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:35:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:48,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:35:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:48,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:35:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:48,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:35:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:48,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:35:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:48,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:35:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:48,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:35:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:48,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-21 08:35:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:48,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 08:35:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:48,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 08:35:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:48,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 08:35:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:48,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 08:35:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 08:35:48,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:35:48,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192117287] [2023-12-21 08:35:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192117287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:35:48,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:35:48,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 08:35:48,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700943559] [2023-12-21 08:35:48,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:35:48,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:35:48,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:35:48,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:35:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 08:35:48,858 INFO L87 Difference]: Start difference. First operand 22023 states and 37921 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 08:36:05,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:36:05,700 INFO L93 Difference]: Finished difference Result 73390 states and 146820 transitions. [2023-12-21 08:36:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 08:36:05,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 127 [2023-12-21 08:36:05,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:36:06,247 INFO L225 Difference]: With dead ends: 73390 [2023-12-21 08:36:06,247 INFO L226 Difference]: Without dead ends: 51448 [2023-12-21 08:36:06,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:36:06,477 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 3790 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 4260 mSolverCounterSat, 994 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3880 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 5254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 994 IncrementalHoareTripleChecker+Valid, 4260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-21 08:36:06,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3880 Valid, 2121 Invalid, 5254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [994 Valid, 4260 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-21 08:36:06,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51448 states. [2023-12-21 08:36:12,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51448 to 38876. [2023-12-21 08:36:12,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38876 states, 30620 states have (on average 1.5897779229261921) internal successors, (48679), 31135 states have internal predecessors, (48679), 6330 states have call successors, (6330), 1545 states have call predecessors, (6330), 1925 states have return successors, (14774), 6459 states have call predecessors, (14774), 6282 states have call successors, (14774) [2023-12-21 08:36:12,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38876 states to 38876 states and 69783 transitions. [2023-12-21 08:36:12,831 INFO L78 Accepts]: Start accepts. Automaton has 38876 states and 69783 transitions. Word has length 127 [2023-12-21 08:36:12,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:36:12,831 INFO L495 AbstractCegarLoop]: Abstraction has 38876 states and 69783 transitions. [2023-12-21 08:36:12,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 08:36:12,831 INFO L276 IsEmpty]: Start isEmpty. Operand 38876 states and 69783 transitions. [2023-12-21 08:36:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 08:36:12,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:36:12,835 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:36:12,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 08:36:12,835 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:36:12,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:36:12,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1430594393, now seen corresponding path program 1 times [2023-12-21 08:36:12,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:36:12,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103054907] [2023-12-21 08:36:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:36:12,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:36:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:12,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:36:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:13,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:36:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:13,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:36:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:13,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:36:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:36:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:13,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:36:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:13,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:36:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:13,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:36:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:36:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:13,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:36:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:13,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:36:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:13,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 08:36:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:13,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 08:36:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:13,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 08:36:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 08:36:13,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:36:13,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103054907] [2023-12-21 08:36:13,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103054907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:36:13,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:36:13,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 08:36:13,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104890677] [2023-12-21 08:36:13,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:36:13,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 08:36:13,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:36:13,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 08:36:13,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:36:13,413 INFO L87 Difference]: Start difference. First operand 38876 states and 69783 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 08:36:33,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:36:33,813 INFO L93 Difference]: Finished difference Result 87715 states and 167027 transitions. [2023-12-21 08:36:33,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 08:36:33,814 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 130 [2023-12-21 08:36:33,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:36:34,138 INFO L225 Difference]: With dead ends: 87715 [2023-12-21 08:36:34,138 INFO L226 Difference]: Without dead ends: 51724 [2023-12-21 08:36:34,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2023-12-21 08:36:34,341 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 4750 mSDsluCounter, 2968 mSDsCounter, 0 mSdLazyCounter, 7613 mSolverCounterSat, 1291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4849 SdHoareTripleChecker+Valid, 3475 SdHoareTripleChecker+Invalid, 8904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1291 IncrementalHoareTripleChecker+Valid, 7613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-21 08:36:34,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4849 Valid, 3475 Invalid, 8904 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1291 Valid, 7613 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-21 08:36:34,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51724 states. [2023-12-21 08:36:40,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51724 to 38852. [2023-12-21 08:36:40,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38852 states, 30611 states have (on average 1.5896573127307176) internal successors, (48661), 31102 states have internal predecessors, (48661), 6324 states have call successors, (6324), 1545 states have call predecessors, (6324), 1916 states have return successors, (14699), 6468 states have call predecessors, (14699), 6276 states have call successors, (14699) [2023-12-21 08:36:40,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38852 states to 38852 states and 69684 transitions. [2023-12-21 08:36:40,922 INFO L78 Accepts]: Start accepts. Automaton has 38852 states and 69684 transitions. Word has length 130 [2023-12-21 08:36:40,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:36:40,923 INFO L495 AbstractCegarLoop]: Abstraction has 38852 states and 69684 transitions. [2023-12-21 08:36:40,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 08:36:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 38852 states and 69684 transitions. [2023-12-21 08:36:40,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 08:36:40,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:36:40,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:36:40,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 08:36:40,927 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:36:40,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:36:40,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1749968020, now seen corresponding path program 1 times [2023-12-21 08:36:40,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:36:40,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189850502] [2023-12-21 08:36:40,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:36:40,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:36:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:40,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:36:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:36:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:36:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:36:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:36:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:36:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:36:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:36:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:36:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:36:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:36:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:36:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 08:36:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 08:36:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-21 08:36:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 08:36:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 08:36:41,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:36:41,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189850502] [2023-12-21 08:36:41,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189850502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:36:41,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:36:41,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 08:36:41,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813594554] [2023-12-21 08:36:41,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:36:41,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:36:41,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:36:41,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:36:41,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 08:36:41,399 INFO L87 Difference]: Start difference. First operand 38852 states and 69684 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-21 08:36:56,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:36:56,783 INFO L93 Difference]: Finished difference Result 89972 states and 175447 transitions. [2023-12-21 08:36:56,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:36:56,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2023-12-21 08:36:56,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:36:57,246 INFO L225 Difference]: With dead ends: 89972 [2023-12-21 08:36:57,246 INFO L226 Difference]: Without dead ends: 51528 [2023-12-21 08:36:57,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:36:57,481 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1046 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 3313 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 3531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 3313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-21 08:36:57,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 1488 Invalid, 3531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 3313 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-21 08:36:57,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51528 states. [2023-12-21 08:37:04,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51528 to 39224. [2023-12-21 08:37:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39224 states, 30878 states have (on average 1.5820325150592656) internal successors, (48850), 31369 states have internal predecessors, (48850), 6324 states have call successors, (6324), 1650 states have call predecessors, (6324), 2021 states have return successors, (14774), 6468 states have call predecessors, (14774), 6276 states have call successors, (14774) [2023-12-21 08:37:04,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39224 states to 39224 states and 69948 transitions. [2023-12-21 08:37:04,502 INFO L78 Accepts]: Start accepts. Automaton has 39224 states and 69948 transitions. Word has length 143 [2023-12-21 08:37:04,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:37:04,502 INFO L495 AbstractCegarLoop]: Abstraction has 39224 states and 69948 transitions. [2023-12-21 08:37:04,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-21 08:37:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 39224 states and 69948 transitions. [2023-12-21 08:37:04,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 08:37:04,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:37:04,507 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:37:04,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 08:37:04,507 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:37:04,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:37:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash 598357079, now seen corresponding path program 1 times [2023-12-21 08:37:04,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:37:04,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901153989] [2023-12-21 08:37:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:37:04,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:37:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:04,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:37:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:04,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:37:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:04,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:37:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:04,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:37:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:04,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:37:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:37:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:04,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:37:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:04,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:37:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:04,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:37:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:05,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:37:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:05,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:37:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:05,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:37:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 08:37:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:05,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 08:37:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:05,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 08:37:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:05,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 08:37:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:05,055 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 08:37:05,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:37:05,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901153989] [2023-12-21 08:37:05,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901153989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:37:05,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:37:05,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 08:37:05,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007465475] [2023-12-21 08:37:05,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:37:05,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 08:37:05,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:37:05,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 08:37:05,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:37:05,057 INFO L87 Difference]: Start difference. First operand 39224 states and 69948 transitions. Second operand has 12 states, 12 states have (on average 8.0) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-21 08:37:28,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:37:28,049 INFO L93 Difference]: Finished difference Result 93108 states and 178611 transitions. [2023-12-21 08:37:28,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 08:37:28,049 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 146 [2023-12-21 08:37:28,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:37:28,349 INFO L225 Difference]: With dead ends: 93108 [2023-12-21 08:37:28,349 INFO L226 Difference]: Without dead ends: 56783 [2023-12-21 08:37:28,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=227, Invalid=895, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 08:37:28,580 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 3171 mSDsluCounter, 3130 mSDsCounter, 0 mSdLazyCounter, 9207 mSolverCounterSat, 818 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3256 SdHoareTripleChecker+Valid, 3564 SdHoareTripleChecker+Invalid, 10025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 818 IncrementalHoareTripleChecker+Valid, 9207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-21 08:37:28,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3256 Valid, 3564 Invalid, 10025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [818 Valid, 9207 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-21 08:37:28,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56783 states. [2023-12-21 08:37:35,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56783 to 43322. [2023-12-21 08:37:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43322 states, 34111 states have (on average 1.5647445105684383) internal successors, (53375), 34617 states have internal predecessors, (53375), 6798 states have call successors, (6798), 1948 states have call predecessors, (6798), 2412 states have return successors, (16587), 7020 states have call predecessors, (16587), 6750 states have call successors, (16587) [2023-12-21 08:37:36,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43322 states to 43322 states and 76760 transitions. [2023-12-21 08:37:36,157 INFO L78 Accepts]: Start accepts. Automaton has 43322 states and 76760 transitions. Word has length 146 [2023-12-21 08:37:36,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:37:36,158 INFO L495 AbstractCegarLoop]: Abstraction has 43322 states and 76760 transitions. [2023-12-21 08:37:36,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-21 08:37:36,158 INFO L276 IsEmpty]: Start isEmpty. Operand 43322 states and 76760 transitions. [2023-12-21 08:37:36,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 08:37:36,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:37:36,177 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:37:36,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 08:37:36,178 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:37:36,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:37:36,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1115488119, now seen corresponding path program 1 times [2023-12-21 08:37:36,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:37:36,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869715519] [2023-12-21 08:37:36,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:37:36,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:37:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:37:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:37:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:37:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:37:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:37:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:37:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:37:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:37:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:37:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:37:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:37:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:37:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 08:37:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:37:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 08:37:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 08:37:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 08:37:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,568 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 08:37:36,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:37:36,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869715519] [2023-12-21 08:37:36,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869715519] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:37:36,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750904870] [2023-12-21 08:37:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:37:36,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:37:36,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:37:36,571 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) [2023-12-21 08:37:36,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 08:37:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:36,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 08:37:36,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:37:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 08:37:36,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:37:36,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750904870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:37:36,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:37:36,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-12-21 08:37:36,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919677203] [2023-12-21 08:37:36,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:37:36,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:37:36,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:37:36,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:37:36,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:37:36,922 INFO L87 Difference]: Start difference. First operand 43322 states and 76760 transitions. Second operand has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 08:37:48,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:37:48,800 INFO L93 Difference]: Finished difference Result 107111 states and 193459 transitions. [2023-12-21 08:37:48,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 08:37:48,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2023-12-21 08:37:48,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:37:49,170 INFO L225 Difference]: With dead ends: 107111 [2023-12-21 08:37:49,170 INFO L226 Difference]: Without dead ends: 67385 [2023-12-21 08:37:49,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:37:49,587 INFO L413 NwaCegarLoop]: 1743 mSDtfsCounter, 912 mSDsluCounter, 5962 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 7705 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 08:37:49,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 7705 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 08:37:49,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67385 states. [2023-12-21 08:37:59,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67385 to 63503. [2023-12-21 08:37:59,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63503 states, 50039 states have (on average 1.5666779911668898) internal successors, (78395), 50773 states have internal predecessors, (78395), 9974 states have call successors, (9974), 2779 states have call predecessors, (9974), 3489 states have return successors, (25875), 10346 states have call predecessors, (25875), 9905 states have call successors, (25875) [2023-12-21 08:38:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63503 states to 63503 states and 114244 transitions. [2023-12-21 08:38:00,473 INFO L78 Accepts]: Start accepts. Automaton has 63503 states and 114244 transitions. Word has length 150 [2023-12-21 08:38:00,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:38:00,473 INFO L495 AbstractCegarLoop]: Abstraction has 63503 states and 114244 transitions. [2023-12-21 08:38:00,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 08:38:00,474 INFO L276 IsEmpty]: Start isEmpty. Operand 63503 states and 114244 transitions. [2023-12-21 08:38:00,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 08:38:00,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:38:00,478 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:38:00,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-21 08:38:00,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:38:00,685 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:38:00,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:38:00,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1056108621, now seen corresponding path program 1 times [2023-12-21 08:38:00,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:38:00,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641420883] [2023-12-21 08:38:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:38:00,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:38:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:38:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:38:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:38:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:38:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:38:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:01,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:38:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:01,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:38:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:01,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:38:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:01,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:01,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:38:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:01,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 08:38:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:01,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:01,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 08:38:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:01,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 08:38:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:01,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 08:38:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:01,117 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 08:38:01,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:38:01,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641420883] [2023-12-21 08:38:01,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641420883] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:38:01,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043775813] [2023-12-21 08:38:01,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:38:01,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:38:01,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:38:01,118 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) [2023-12-21 08:38:01,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-21 08:38:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:01,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 08:38:01,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:38:01,385 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:38:01,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:38:01,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043775813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:38:01,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:38:01,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-12-21 08:38:01,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838033586] [2023-12-21 08:38:01,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:38:01,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:38:01,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:38:01,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:38:01,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 08:38:01,387 INFO L87 Difference]: Start difference. First operand 63503 states and 114244 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 08:38:12,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:38:12,815 INFO L93 Difference]: Finished difference Result 127843 states and 238616 transitions. [2023-12-21 08:38:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:38:12,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2023-12-21 08:38:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:38:13,196 INFO L225 Difference]: With dead ends: 127843 [2023-12-21 08:38:13,196 INFO L226 Difference]: Without dead ends: 64421 [2023-12-21 08:38:13,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 08:38:13,634 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 85 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:38:13,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2751 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:38:13,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64421 states. [2023-12-21 08:38:24,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64421 to 64421. [2023-12-21 08:38:24,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64421 states, 50804 states have (on average 1.5611566018423746) internal successors, (79313), 51538 states have internal predecessors, (79313), 9974 states have call successors, (9974), 2932 states have call predecessors, (9974), 3642 states have return successors, (25875), 10346 states have call predecessors, (25875), 9905 states have call successors, (25875) [2023-12-21 08:38:25,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64421 states to 64421 states and 115162 transitions. [2023-12-21 08:38:25,530 INFO L78 Accepts]: Start accepts. Automaton has 64421 states and 115162 transitions. Word has length 150 [2023-12-21 08:38:25,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:38:25,531 INFO L495 AbstractCegarLoop]: Abstraction has 64421 states and 115162 transitions. [2023-12-21 08:38:25,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 08:38:25,531 INFO L276 IsEmpty]: Start isEmpty. Operand 64421 states and 115162 transitions. [2023-12-21 08:38:25,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 08:38:25,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:38:25,535 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:38:25,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-21 08:38:25,741 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,SelfDestructingSolverStorable31 [2023-12-21 08:38:25,741 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:38:25,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:38:25,742 INFO L85 PathProgramCache]: Analyzing trace with hash 72126506, now seen corresponding path program 1 times [2023-12-21 08:38:25,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:38:25,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124389891] [2023-12-21 08:38:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:38:25,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:38:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:25,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:38:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:38:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:38:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:38:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:38:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:38:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:38:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:38:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:38:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 08:38:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 08:38:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 08:38:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 08:38:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 08:38:26,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:38:26,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124389891] [2023-12-21 08:38:26,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124389891] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:38:26,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742118634] [2023-12-21 08:38:26,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:38:26,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:38:26,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:38:26,282 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) [2023-12-21 08:38:26,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-21 08:38:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:26,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 08:38:26,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:38:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 08:38:26,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:38:26,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742118634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:38:26,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:38:26,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-21 08:38:26,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220392780] [2023-12-21 08:38:26,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:38:26,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:38:26,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:38:26,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:38:26,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:38:26,609 INFO L87 Difference]: Start difference. First operand 64421 states and 115162 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2023-12-21 08:38:42,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:38:42,258 INFO L93 Difference]: Finished difference Result 126910 states and 230499 transitions. [2023-12-21 08:38:42,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 08:38:42,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 152 [2023-12-21 08:38:42,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:38:42,858 INFO L225 Difference]: With dead ends: 126910 [2023-12-21 08:38:42,859 INFO L226 Difference]: Without dead ends: 67620 [2023-12-21 08:38:43,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:38:43,330 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 3053 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3170 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 6039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 08:38:43,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3170 Valid, 1706 Invalid, 6039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 08:38:43,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67620 states. [2023-12-21 08:38:53,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67620 to 64457. [2023-12-21 08:38:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64457 states, 50840 states have (on average 1.5607592446892211) internal successors, (79349), 51574 states have internal predecessors, (79349), 9974 states have call successors, (9974), 2932 states have call predecessors, (9974), 3642 states have return successors, (25875), 10346 states have call predecessors, (25875), 9905 states have call successors, (25875) [2023-12-21 08:38:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64457 states to 64457 states and 115198 transitions. [2023-12-21 08:38:54,509 INFO L78 Accepts]: Start accepts. Automaton has 64457 states and 115198 transitions. Word has length 152 [2023-12-21 08:38:54,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:38:54,510 INFO L495 AbstractCegarLoop]: Abstraction has 64457 states and 115198 transitions. [2023-12-21 08:38:54,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2023-12-21 08:38:54,510 INFO L276 IsEmpty]: Start isEmpty. Operand 64457 states and 115198 transitions. [2023-12-21 08:38:54,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 08:38:54,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:38:54,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:38:54,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-21 08:38:54,713 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,SelfDestructingSolverStorable32 [2023-12-21 08:38:54,714 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:38:54,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:38:54,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1877301696, now seen corresponding path program 1 times [2023-12-21 08:38:54,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:38:54,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138656058] [2023-12-21 08:38:54,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:38:54,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:38:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:54,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:38:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:38:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:38:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:38:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:38:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:38:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:38:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:38:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:38:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 08:38:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 08:38:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 08:38:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 08:38:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 08:38:55,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:38:55,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138656058] [2023-12-21 08:38:55,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138656058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:38:55,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278188586] [2023-12-21 08:38:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:38:55,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:38:55,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:38:55,297 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) [2023-12-21 08:38:55,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-21 08:38:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:55,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 1678 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 08:38:55,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:38:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 08:38:55,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:38:55,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278188586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:38:55,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:38:55,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-21 08:38:55,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102965587] [2023-12-21 08:38:55,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:38:55,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:38:55,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:38:55,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:38:55,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:38:55,697 INFO L87 Difference]: Start difference. First operand 64457 states and 115198 transitions. Second operand has 6 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-21 08:39:10,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:39:10,206 INFO L93 Difference]: Finished difference Result 143982 states and 265832 transitions. [2023-12-21 08:39:10,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:39:10,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 153 [2023-12-21 08:39:10,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:39:10,886 INFO L225 Difference]: With dead ends: 143982 [2023-12-21 08:39:10,886 INFO L226 Difference]: Without dead ends: 79592 [2023-12-21 08:39:11,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:39:11,396 INFO L413 NwaCegarLoop]: 1345 mSDtfsCounter, 1652 mSDsluCounter, 4219 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 5564 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 08:39:11,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 5564 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 08:39:11,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79592 states. [2023-12-21 08:39:24,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79592 to 79457. [2023-12-21 08:39:24,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79457 states, 63386 states have (on average 1.5445839775344714) internal successors, (97905), 64276 states have internal predecessors, (97905), 11053 states have call successors, (11053), 4040 states have call predecessors, (11053), 5017 states have return successors, (38747), 11536 states have call predecessors, (38747), 10941 states have call successors, (38747) [2023-12-21 08:39:25,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79457 states to 79457 states and 147705 transitions. [2023-12-21 08:39:25,776 INFO L78 Accepts]: Start accepts. Automaton has 79457 states and 147705 transitions. Word has length 153 [2023-12-21 08:39:25,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:39:25,777 INFO L495 AbstractCegarLoop]: Abstraction has 79457 states and 147705 transitions. [2023-12-21 08:39:25,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-21 08:39:25,777 INFO L276 IsEmpty]: Start isEmpty. Operand 79457 states and 147705 transitions. [2023-12-21 08:39:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 08:39:25,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:39:25,781 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:39:25,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-21 08:39:25,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:39:25,982 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:39:25,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:39:25,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1865468845, now seen corresponding path program 1 times [2023-12-21 08:39:25,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:39:25,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22262406] [2023-12-21 08:39:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:39:25,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:39:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:39:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:39:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:39:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:39:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:39:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:39:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:39:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:39:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:39:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:39:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:39:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:39:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 08:39:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:39:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 08:39:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 08:39:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 08:39:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:39:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 08:39:26,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:39:26,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22262406] [2023-12-21 08:39:26,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22262406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:39:26,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:39:26,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 08:39:26,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190415871] [2023-12-21 08:39:26,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:39:26,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:39:26,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:39:26,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:39:26,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 08:39:26,419 INFO L87 Difference]: Start difference. First operand 79457 states and 147705 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17)