/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_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 08:33:16,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 08:33:16,145 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 08:33:16,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 08:33:16,149 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 08:33:16,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 08:33:16,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 08:33:16,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 08:33:16,184 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 08:33:16,184 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 08:33:16,185 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 08:33:16,185 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 08:33:16,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 08:33:16,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 08:33:16,186 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 08:33:16,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 08:33:16,187 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 08:33:16,187 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 08:33:16,187 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 08:33:16,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 08:33:16,188 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 08:33:16,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 08:33:16,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 08:33:16,189 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 08:33:16,189 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 08:33:16,189 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 08:33:16,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 08:33:16,190 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 08:33:16,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 08:33:16,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 08:33:16,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 08:33:16,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 08:33:16,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 08:33:16,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 08:33:16,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 08:33:16,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 08:33:16,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 08:33:16,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 08:33:16,192 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 08:33:16,192 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 08:33:16,192 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 08:33:16,193 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 08:33:16,193 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 08:33:16,193 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 08:33:16,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 08:33:16,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 08:33:16,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 08:33:16,444 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 08:33:16,445 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 08:33:16,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c [2023-12-21 08:33:17,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 08:33:18,011 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 08:33:18,012 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c [2023-12-21 08:33:18,040 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eae4b51e/00d7a2398dbd4500a31dba006c846b08/FLAG1ee999b4a [2023-12-21 08:33:18,053 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eae4b51e/00d7a2398dbd4500a31dba006c846b08 [2023-12-21 08:33:18,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 08:33:18,056 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 08:33:18,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 08:33:18,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 08:33:18,062 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 08:33:18,063 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:33:18" (1/1) ... [2023-12-21 08:33:18,064 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23700297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:18, skipping insertion in model container [2023-12-21 08:33:18,064 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:33:18" (1/1) ... [2023-12-21 08:33:18,125 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 08:33:18,527 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_product29.cil.c[54440,54453] [2023-12-21 08:33:18,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 08:33:18,594 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 08:33:18,603 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2023-12-21 08:33:18,604 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [716] [2023-12-21 08:33:18,604 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [736] [2023-12-21 08:33:18,604 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [857] [2023-12-21 08:33:18,605 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [2398] [2023-12-21 08:33:18,605 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2488] [2023-12-21 08:33:18,605 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2497] [2023-12-21 08:33:18,605 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2589] [2023-12-21 08:33:18,605 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2940] [2023-12-21 08:33:18,609 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2975] [2023-12-21 08:33:18,685 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_product29.cil.c[54440,54453] [2023-12-21 08:33:18,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 08:33:18,744 INFO L206 MainTranslator]: Completed translation [2023-12-21 08:33:18,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:18 WrapperNode [2023-12-21 08:33:18,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 08:33:18,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 08:33:18,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 08:33:18,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 08:33:18,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:18" (1/1) ... [2023-12-21 08:33:18,780 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:18" (1/1) ... [2023-12-21 08:33:18,821 INFO L138 Inliner]: procedures = 91, calls = 340, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 861 [2023-12-21 08:33:18,822 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 08:33:18,822 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 08:33:18,822 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 08:33:18,822 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 08:33:18,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:18" (1/1) ... [2023-12-21 08:33:18,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:18" (1/1) ... [2023-12-21 08:33:18,848 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:18" (1/1) ... [2023-12-21 08:33:18,893 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 08:33:18,894 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:18" (1/1) ... [2023-12-21 08:33:18,897 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:18" (1/1) ... [2023-12-21 08:33:18,912 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:18" (1/1) ... [2023-12-21 08:33:18,922 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:18" (1/1) ... [2023-12-21 08:33:18,928 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:18" (1/1) ... [2023-12-21 08:33:18,933 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:18" (1/1) ... [2023-12-21 08:33:18,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 08:33:18,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 08:33:18,943 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 08:33:18,943 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 08:33:18,944 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:18" (1/1) ... [2023-12-21 08:33:18,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 08:33:18,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:18,990 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 08:33:19,020 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 08:33:19,027 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-12-21 08:33:19,027 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-12-21 08:33:19,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 08:33:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-12-21 08:33:19,028 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-12-21 08:33:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-21 08:33:19,028 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-21 08:33:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-12-21 08:33:19,029 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-12-21 08:33:19,029 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-21 08:33:19,029 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-21 08:33:19,029 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-21 08:33:19,029 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-21 08:33:19,029 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-12-21 08:33:19,030 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-12-21 08:33:19,030 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-21 08:33:19,030 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-21 08:33:19,031 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-12-21 08:33:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-12-21 08:33:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-21 08:33:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-21 08:33:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-21 08:33:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-21 08:33:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-21 08:33:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-21 08:33:19,034 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-21 08:33:19,034 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-21 08:33:19,034 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-21 08:33:19,034 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-21 08:33:19,034 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-21 08:33:19,034 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-21 08:33:19,034 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-21 08:33:19,034 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-21 08:33:19,034 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-21 08:33:19,034 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-21 08:33:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-21 08:33:19,035 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-21 08:33:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-21 08:33:19,035 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-21 08:33:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-21 08:33:19,035 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-21 08:33:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 08:33:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 08:33:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 08:33:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 08:33:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-21 08:33:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-21 08:33:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-21 08:33:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-21 08:33:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-21 08:33:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-21 08:33:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-21 08:33:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-21 08:33:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-21 08:33:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-21 08:33:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-21 08:33:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-21 08:33:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-21 08:33:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-21 08:33:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-21 08:33:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-21 08:33:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-12-21 08:33:19,037 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-12-21 08:33:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-21 08:33:19,037 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-21 08:33:19,038 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-21 08:33:19,038 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-21 08:33:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-21 08:33:19,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-21 08:33:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 08:33:19,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 08:33:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-21 08:33:19,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-21 08:33:19,222 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 08:33:19,225 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 08:33:20,238 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 08:33:20,303 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 08:33:20,304 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-21 08:33:20,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:33:20 BoogieIcfgContainer [2023-12-21 08:33:20,304 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 08:33:20,306 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 08:33:20,306 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 08:33:20,309 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 08:33:20,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:33:18" (1/3) ... [2023-12-21 08:33:20,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e938c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:33:20, skipping insertion in model container [2023-12-21 08:33:20,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:33:18" (2/3) ... [2023-12-21 08:33:20,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e938c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:33:20, skipping insertion in model container [2023-12-21 08:33:20,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:33:20" (3/3) ... [2023-12-21 08:33:20,311 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product29.cil.c [2023-12-21 08:33:20,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 08:33:20,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 08:33:20,387 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 08:33:20,392 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;@48776354, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 08:33:20,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 08:33:20,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 579 states, 452 states have (on average 1.7278761061946903) internal successors, (781), 470 states have internal predecessors, (781), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-21 08:33:20,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 08:33:20,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:20,435 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] [2023-12-21 08:33:20,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:20,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:20,440 INFO L85 PathProgramCache]: Analyzing trace with hash -11043965, now seen corresponding path program 1 times [2023-12-21 08:33:20,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:20,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679424992] [2023-12-21 08:33:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:20,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:21,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:21,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:21,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 08:33:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:21,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:21,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:33:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:21,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:33:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:21,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 08:33:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:21,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 08:33:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:21,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:21,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:33:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:21,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 08:33:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:21,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 08:33:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:21,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 08:33:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:21,385 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 08:33:21,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:21,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679424992] [2023-12-21 08:33:21,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679424992] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:21,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481125014] [2023-12-21 08:33:21,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:21,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:21,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:21,391 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 08:33:21,399 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 08:33:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:21,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 08:33:21,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 08:33:21,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:21,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481125014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:21,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:21,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2023-12-21 08:33:21,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745265431] [2023-12-21 08:33:21,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:21,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 08:33:21,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:21,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 08:33:21,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:33:21,825 INFO L87 Difference]: Start difference. First operand has 579 states, 452 states have (on average 1.7278761061946903) internal successors, (781), 470 states have internal predecessors, (781), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:21,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:21,987 INFO L93 Difference]: Finished difference Result 1142 states and 1951 transitions. [2023-12-21 08:33:21,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 08:33:21,989 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-12-21 08:33:21,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:22,006 INFO L225 Difference]: With dead ends: 1142 [2023-12-21 08:33:22,006 INFO L226 Difference]: Without dead ends: 573 [2023-12-21 08:33:22,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:33:22,017 INFO L413 NwaCegarLoop]: 953 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, 953 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:33:22,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 953 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:33:22,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-12-21 08:33:22,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2023-12-21 08:33:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 449 states have (on average 1.7037861915367483) internal successors, (765), 465 states have internal predecessors, (765), 100 states have call successors, (100), 25 states have call predecessors, (100), 23 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-21 08:33:22,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 962 transitions. [2023-12-21 08:33:22,101 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 962 transitions. Word has length 103 [2023-12-21 08:33:22,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:22,102 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 962 transitions. [2023-12-21 08:33:22,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:22,102 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 962 transitions. [2023-12-21 08:33:22,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 08:33:22,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:22,144 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] [2023-12-21 08:33:22,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 08:33:22,344 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 08:33:22,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:22,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:22,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1509033501, now seen corresponding path program 1 times [2023-12-21 08:33:22,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:22,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405918423] [2023-12-21 08:33:22,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:22,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:22,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:22,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:22,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 08:33:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:22,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:22,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:33:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:22,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:33:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:22,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 08:33:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:22,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 08:33:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:22,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:22,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:33:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:22,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 08:33:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:22,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 08:33:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:22,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 08:33:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:22,770 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 08:33:22,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:22,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405918423] [2023-12-21 08:33:22,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405918423] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:22,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275237783] [2023-12-21 08:33:22,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:22,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:22,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:22,777 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 08:33:22,802 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 08:33:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:23,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:33:23,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:33:23,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:23,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275237783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:23,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:23,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-21 08:33:23,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676343369] [2023-12-21 08:33:23,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:23,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 08:33:23,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:23,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 08:33:23,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 08:33:23,126 INFO L87 Difference]: Start difference. First operand 573 states and 962 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:23,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:23,296 INFO L93 Difference]: Finished difference Result 1684 states and 2867 transitions. [2023-12-21 08:33:23,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 08:33:23,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-12-21 08:33:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:23,309 INFO L225 Difference]: With dead ends: 1684 [2023-12-21 08:33:23,310 INFO L226 Difference]: Without dead ends: 1126 [2023-12-21 08:33:23,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 08:33:23,316 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 955 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:33:23,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 1881 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:33:23,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2023-12-21 08:33:23,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1117. [2023-12-21 08:33:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 883 states have (on average 1.7112117780294451) internal successors, (1511), 912 states have internal predecessors, (1511), 188 states have call successors, (188), 47 states have call predecessors, (188), 45 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-12-21 08:33:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1895 transitions. [2023-12-21 08:33:23,378 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1895 transitions. Word has length 103 [2023-12-21 08:33:23,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:23,379 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1895 transitions. [2023-12-21 08:33:23,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1895 transitions. [2023-12-21 08:33:23,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 08:33:23,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:23,387 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] [2023-12-21 08:33:23,398 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 08:33:23,594 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 08:33:23,595 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:23,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:23,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2084333921, now seen corresponding path program 1 times [2023-12-21 08:33:23,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:23,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968741620] [2023-12-21 08:33:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:23,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:23,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:23,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:23,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 08:33:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:23,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:23,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:33:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:23,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:33:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:23,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 08:33:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:23,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 08:33:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:23,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:23,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:33:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:23,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 08:33:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:23,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 08:33:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:23,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 08:33:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:24,002 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 08:33:24,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:24,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968741620] [2023-12-21 08:33:24,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968741620] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:24,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899620418] [2023-12-21 08:33:24,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:24,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:24,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:24,005 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 08:33:24,031 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 08:33:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:24,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:33:24,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:24,359 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 08:33:24,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:24,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899620418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:24,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:24,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-21 08:33:24,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106636376] [2023-12-21 08:33:24,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:24,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:33:24,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:24,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:33:24,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 08:33:24,362 INFO L87 Difference]: Start difference. First operand 1117 states and 1895 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:24,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:24,501 INFO L93 Difference]: Finished difference Result 2240 states and 3803 transitions. [2023-12-21 08:33:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:33:24,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-12-21 08:33:24,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:24,511 INFO L225 Difference]: With dead ends: 2240 [2023-12-21 08:33:24,512 INFO L226 Difference]: Without dead ends: 1126 [2023-12-21 08:33:24,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:33:24,521 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 26 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2787 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 08:33:24,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2787 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:33:24,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2023-12-21 08:33:24,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2023-12-21 08:33:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 891 states have (on average 1.7115600448933783) internal successors, (1525), 920 states have internal predecessors, (1525), 188 states have call successors, (188), 48 states have call predecessors, (188), 46 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-12-21 08:33:24,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1909 transitions. [2023-12-21 08:33:24,591 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1909 transitions. Word has length 103 [2023-12-21 08:33:24,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:24,591 INFO L495 AbstractCegarLoop]: Abstraction has 1126 states and 1909 transitions. [2023-12-21 08:33:24,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1909 transitions. [2023-12-21 08:33:24,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 08:33:24,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:24,600 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] [2023-12-21 08:33:24,611 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 08:33:24,808 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 08:33:24,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:24,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:24,809 INFO L85 PathProgramCache]: Analyzing trace with hash 2119825341, now seen corresponding path program 1 times [2023-12-21 08:33:24,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:24,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951895440] [2023-12-21 08:33:24,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:24,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:24,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:25,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:25,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-21 08:33:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:25,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:25,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:25,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 08:33:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:25,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 08:33:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:25,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:33:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:25,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:25,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 08:33:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:25,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 08:33:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:25,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 08:33:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:25,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 08:33:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 08:33:25,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:25,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951895440] [2023-12-21 08:33:25,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951895440] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:25,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359242259] [2023-12-21 08:33:25,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:25,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:25,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:25,274 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 08:33:25,299 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 08:33:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:25,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:33:25,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:25,611 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:33:25,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:25,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359242259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:25,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:25,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-12-21 08:33:25,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909137641] [2023-12-21 08:33:25,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:25,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:33:25,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:25,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:33:25,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:33:25,614 INFO L87 Difference]: Start difference. First operand 1126 states and 1909 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:25,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:25,859 INFO L93 Difference]: Finished difference Result 2291 states and 3897 transitions. [2023-12-21 08:33:25,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:33:25,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2023-12-21 08:33:25,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:25,872 INFO L225 Difference]: With dead ends: 2291 [2023-12-21 08:33:25,873 INFO L226 Difference]: Without dead ends: 1170 [2023-12-21 08:33:25,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-21 08:33:25,885 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 168 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2633 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 08:33:25,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2633 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 08:33:25,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2023-12-21 08:33:25,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1170. [2023-12-21 08:33:25,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 934 states have (on average 1.721627408993576) internal successors, (1608), 963 states have internal predecessors, (1608), 188 states have call successors, (188), 49 states have call predecessors, (188), 47 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-12-21 08:33:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1992 transitions. [2023-12-21 08:33:25,938 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1992 transitions. Word has length 105 [2023-12-21 08:33:25,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:25,938 INFO L495 AbstractCegarLoop]: Abstraction has 1170 states and 1992 transitions. [2023-12-21 08:33:25,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1992 transitions. [2023-12-21 08:33:25,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 08:33:25,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:25,943 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] [2023-12-21 08:33:25,956 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 08:33:26,150 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 08:33:26,151 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:26,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:26,152 INFO L85 PathProgramCache]: Analyzing trace with hash 881188777, now seen corresponding path program 1 times [2023-12-21 08:33:26,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:26,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071404422] [2023-12-21 08:33:26,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:26,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:26,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:26,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:26,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 08:33:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:26,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:26,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:26,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 08:33:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:26,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 08:33:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:26,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:33:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:26,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:26,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 08:33:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:26,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 08:33:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:26,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 08:33:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:26,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 08:33:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 08:33:26,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:26,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071404422] [2023-12-21 08:33:26,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071404422] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:26,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886044215] [2023-12-21 08:33:26,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:26,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:26,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:26,555 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 08:33:26,588 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 08:33:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:26,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:33:26,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:33:26,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:26,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886044215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:26,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:26,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-21 08:33:26,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937070906] [2023-12-21 08:33:26,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:26,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:33:26,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:26,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:33:26,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:33:26,943 INFO L87 Difference]: Start difference. First operand 1170 states and 1992 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:27,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:27,136 INFO L93 Difference]: Finished difference Result 2368 states and 4029 transitions. [2023-12-21 08:33:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:33:27,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 107 [2023-12-21 08:33:27,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:27,144 INFO L225 Difference]: With dead ends: 2368 [2023-12-21 08:33:27,144 INFO L226 Difference]: Without dead ends: 1203 [2023-12-21 08:33:27,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:33:27,152 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 113 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5499 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 08:33:27,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5499 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:33:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-12-21 08:33:27,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1182. [2023-12-21 08:33:27,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 943 states have (on average 1.7200424178154825) internal successors, (1622), 974 states have internal predecessors, (1622), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2023-12-21 08:33:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 2012 transitions. [2023-12-21 08:33:27,194 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 2012 transitions. Word has length 107 [2023-12-21 08:33:27,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:27,195 INFO L495 AbstractCegarLoop]: Abstraction has 1182 states and 2012 transitions. [2023-12-21 08:33:27,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 2012 transitions. [2023-12-21 08:33:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 08:33:27,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:27,200 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, 1, 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 08:33:27,211 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 08:33:27,407 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 08:33:27,407 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:27,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:27,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1751476944, now seen corresponding path program 1 times [2023-12-21 08:33:27,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:27,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491803981] [2023-12-21 08:33:27,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:27,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:27,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:27,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:27,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 08:33:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:27,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:27,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 08:33:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:27,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 08:33:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:27,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 08:33:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:27,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:27,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 08:33:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 08:33:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:27,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 08:33:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:27,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 08:33:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:27,813 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 08:33:27,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:27,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491803981] [2023-12-21 08:33:27,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491803981] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:27,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026624843] [2023-12-21 08:33:27,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:27,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:27,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:27,815 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 08:33:27,837 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 08:33:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:28,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:33:28,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:28,193 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 08:33:28,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:28,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026624843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:28,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:28,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-21 08:33:28,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464319190] [2023-12-21 08:33:28,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:28,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:33:28,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:28,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:33:28,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-21 08:33:28,195 INFO L87 Difference]: Start difference. First operand 1182 states and 2012 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:28,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:28,375 INFO L93 Difference]: Finished difference Result 2386 states and 4058 transitions. [2023-12-21 08:33:28,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:33:28,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 108 [2023-12-21 08:33:28,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:28,385 INFO L225 Difference]: With dead ends: 2386 [2023-12-21 08:33:28,385 INFO L226 Difference]: Without dead ends: 1211 [2023-12-21 08:33:28,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-21 08:33:28,392 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 124 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5487 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 08:33:28,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5487 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:33:28,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2023-12-21 08:33:28,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1182. [2023-12-21 08:33:28,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 943 states have (on average 1.7200424178154825) internal successors, (1622), 974 states have internal predecessors, (1622), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2023-12-21 08:33:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 2012 transitions. [2023-12-21 08:33:28,439 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 2012 transitions. Word has length 108 [2023-12-21 08:33:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:28,439 INFO L495 AbstractCegarLoop]: Abstraction has 1182 states and 2012 transitions. [2023-12-21 08:33:28,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:28,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 2012 transitions. [2023-12-21 08:33:28,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 08:33:28,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:28,444 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] [2023-12-21 08:33:28,453 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 08:33:28,651 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 08:33:28,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:28,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:28,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1592956374, now seen corresponding path program 1 times [2023-12-21 08:33:28,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:28,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473814240] [2023-12-21 08:33:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:28,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:28,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:28,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 08:33:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:28,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 08:33:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:28,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:28,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:28,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 08:33:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:28,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 08:33:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:28,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 08:33:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:28,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:28,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 08:33:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:28,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 08:33:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:28,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 08:33:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:28,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 08:33:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:33:28,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:28,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473814240] [2023-12-21 08:33:28,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473814240] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:28,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24086960] [2023-12-21 08:33:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:28,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:28,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:28,951 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 08:33:28,963 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 08:33:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:29,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:33:29,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:29,271 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 08:33:29,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:29,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24086960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:29,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:29,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-21 08:33:29,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294439652] [2023-12-21 08:33:29,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:29,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:33:29,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:29,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:33:29,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 08:33:29,273 INFO L87 Difference]: Start difference. First operand 1182 states and 2012 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:29,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:29,384 INFO L93 Difference]: Finished difference Result 2374 states and 4038 transitions. [2023-12-21 08:33:29,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:33:29,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2023-12-21 08:33:29,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:29,393 INFO L225 Difference]: With dead ends: 2374 [2023-12-21 08:33:29,393 INFO L226 Difference]: Without dead ends: 1193 [2023-12-21 08:33:29,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:33:29,400 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 20 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:33:29,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2788 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:33:29,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2023-12-21 08:33:29,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1191. [2023-12-21 08:33:29,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7108307045215563) internal successors, (1627), 982 states have internal predecessors, (1627), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-12-21 08:33:29,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2016 transitions. [2023-12-21 08:33:29,441 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2016 transitions. Word has length 108 [2023-12-21 08:33:29,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:29,441 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2016 transitions. [2023-12-21 08:33:29,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:29,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2016 transitions. [2023-12-21 08:33:29,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 08:33:29,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:29,446 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, 1, 1, 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 08:33:29,456 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 08:33:29,653 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 08:33:29,654 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:29,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:29,654 INFO L85 PathProgramCache]: Analyzing trace with hash -411138331, now seen corresponding path program 1 times [2023-12-21 08:33:29,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:29,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065108766] [2023-12-21 08:33:29,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:29,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:29,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:29,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 08:33:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:29,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:29,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:29,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 08:33:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:29,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 08:33:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:30,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 08:33:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:30,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:30,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 08:33:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:30,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 08:33:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:30,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 08:33:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:30,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 08:33:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:30,039 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 08:33:30,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:30,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065108766] [2023-12-21 08:33:30,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065108766] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:30,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132207786] [2023-12-21 08:33:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:30,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:30,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:30,045 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 08:33:30,068 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 08:33:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:30,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:33:30,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:30,410 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 08:33:30,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:30,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132207786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:30,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:30,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-21 08:33:30,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180200043] [2023-12-21 08:33:30,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:30,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:33:30,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:30,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:33:30,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-21 08:33:30,414 INFO L87 Difference]: Start difference. First operand 1191 states and 2016 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:30,568 INFO L93 Difference]: Finished difference Result 2395 states and 4053 transitions. [2023-12-21 08:33:30,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:33:30,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2023-12-21 08:33:30,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:30,576 INFO L225 Difference]: With dead ends: 2395 [2023-12-21 08:33:30,576 INFO L226 Difference]: Without dead ends: 1222 [2023-12-21 08:33:30,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-21 08:33:30,584 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 135 mSDsluCounter, 4542 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5475 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 08:33:30,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 5475 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:33:30,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2023-12-21 08:33:30,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1191. [2023-12-21 08:33:30,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7108307045215563) internal successors, (1627), 982 states have internal predecessors, (1627), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-12-21 08:33:30,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2016 transitions. [2023-12-21 08:33:30,624 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2016 transitions. Word has length 109 [2023-12-21 08:33:30,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:30,624 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2016 transitions. [2023-12-21 08:33:30,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:30,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2016 transitions. [2023-12-21 08:33:30,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 08:33:30,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:30,629 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, 1, 1, 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 08:33:30,636 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 08:33:30,837 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 08:33:30,837 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:30,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:30,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1583551965, now seen corresponding path program 1 times [2023-12-21 08:33:30,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:30,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801727433] [2023-12-21 08:33:30,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:30,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:30,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:31,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:31,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 08:33:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:31,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:31,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:31,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 08:33:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:31,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 08:33:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:31,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 08:33:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:31,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 08:33:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:31,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 08:33:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:31,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 08:33:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:31,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 08:33:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:31,178 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 08:33:31,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:31,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801727433] [2023-12-21 08:33:31,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801727433] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053180278] [2023-12-21 08:33:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:31,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:31,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:31,180 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 08:33:31,204 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 08:33:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:31,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:33:31,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:31,564 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 08:33:31,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:31,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053180278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:31,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:31,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-21 08:33:31,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350542319] [2023-12-21 08:33:31,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:31,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:33:31,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:31,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:33:31,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-21 08:33:31,568 INFO L87 Difference]: Start difference. First operand 1191 states and 2016 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:31,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:31,794 INFO L93 Difference]: Finished difference Result 2397 states and 4056 transitions. [2023-12-21 08:33:31,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:33:31,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2023-12-21 08:33:31,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:31,802 INFO L225 Difference]: With dead ends: 2397 [2023-12-21 08:33:31,803 INFO L226 Difference]: Without dead ends: 1224 [2023-12-21 08:33:31,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:33:31,811 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 131 mSDsluCounter, 5445 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 6368 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 08:33:31,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 6368 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:33:31,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-12-21 08:33:31,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1191. [2023-12-21 08:33:31,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7108307045215563) internal successors, (1627), 982 states have internal predecessors, (1627), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-12-21 08:33:31,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2016 transitions. [2023-12-21 08:33:31,856 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2016 transitions. Word has length 109 [2023-12-21 08:33:31,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:31,856 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2016 transitions. [2023-12-21 08:33:31,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:31,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2016 transitions. [2023-12-21 08:33:31,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 08:33:31,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:31,862 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] [2023-12-21 08:33:31,872 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 08:33:32,070 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 08:33:32,070 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:32,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:32,070 INFO L85 PathProgramCache]: Analyzing trace with hash 490820428, now seen corresponding path program 1 times [2023-12-21 08:33:32,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:32,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664848005] [2023-12-21 08:33:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:32,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:32,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:32,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:32,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:33:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:32,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 08:33:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:32,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 08:33:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:33:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:32,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:32,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 08:33:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:32,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 08:33:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:32,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 08:33:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:32,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 08:33:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:32,436 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 08:33:32,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:32,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664848005] [2023-12-21 08:33:32,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664848005] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:32,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327344304] [2023-12-21 08:33:32,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:32,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:32,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:32,437 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 08:33:32,464 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 08:33:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:32,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:33:32,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:32,810 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 08:33:32,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:32,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327344304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:32,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:32,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-21 08:33:32,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319166851] [2023-12-21 08:33:32,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:32,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:33:32,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:32,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:33:32,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-21 08:33:32,812 INFO L87 Difference]: Start difference. First operand 1191 states and 2016 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:33,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:33,085 INFO L93 Difference]: Finished difference Result 2397 states and 4056 transitions. [2023-12-21 08:33:33,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:33:33,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2023-12-21 08:33:33,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:33,092 INFO L225 Difference]: With dead ends: 2397 [2023-12-21 08:33:33,092 INFO L226 Difference]: Without dead ends: 1224 [2023-12-21 08:33:33,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:33:33,097 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 141 mSDsluCounter, 5433 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6356 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 08:33:33,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6356 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 08:33:33,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-12-21 08:33:33,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1191. [2023-12-21 08:33:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7108307045215563) internal successors, (1627), 982 states have internal predecessors, (1627), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-12-21 08:33:33,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2016 transitions. [2023-12-21 08:33:33,139 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2016 transitions. Word has length 110 [2023-12-21 08:33:33,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:33,140 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2016 transitions. [2023-12-21 08:33:33,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:33,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2016 transitions. [2023-12-21 08:33:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 08:33:33,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:33,144 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] [2023-12-21 08:33:33,152 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 08:33:33,351 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 08:33:33,352 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:33,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:33,352 INFO L85 PathProgramCache]: Analyzing trace with hash 300604446, now seen corresponding path program 1 times [2023-12-21 08:33:33,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:33,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637358702] [2023-12-21 08:33:33,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:33,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:33,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:33,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:33,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:33:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:33,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:33,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 08:33:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:33,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 08:33:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:33,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:33:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:33,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:33,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 08:33:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:33,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 08:33:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:33,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 08:33:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:33,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 08:33:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:33,687 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 08:33:33,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:33,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637358702] [2023-12-21 08:33:33,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637358702] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:33,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281066671] [2023-12-21 08:33:33,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:33,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:33,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:33,689 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 08:33:33,711 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 08:33:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:33,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:33:33,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:34,057 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 08:33:34,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:34,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281066671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:34,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:34,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-21 08:33:34,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471607348] [2023-12-21 08:33:34,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:34,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:33:34,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:34,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:33:34,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-21 08:33:34,060 INFO L87 Difference]: Start difference. First operand 1191 states and 2016 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:34,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:34,324 INFO L93 Difference]: Finished difference Result 2389 states and 4042 transitions. [2023-12-21 08:33:34,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:33:34,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2023-12-21 08:33:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:34,332 INFO L225 Difference]: With dead ends: 2389 [2023-12-21 08:33:34,332 INFO L226 Difference]: Without dead ends: 1216 [2023-12-21 08:33:34,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:33:34,338 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 151 mSDsluCounter, 5421 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 6344 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 08:33:34,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 6344 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 08:33:34,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2023-12-21 08:33:34,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1191. [2023-12-21 08:33:34,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7108307045215563) internal successors, (1627), 982 states have internal predecessors, (1627), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-12-21 08:33:34,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2016 transitions. [2023-12-21 08:33:34,379 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2016 transitions. Word has length 111 [2023-12-21 08:33:34,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:34,379 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2016 transitions. [2023-12-21 08:33:34,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:34,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2016 transitions. [2023-12-21 08:33:34,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 08:33:34,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:34,384 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] [2023-12-21 08:33:34,395 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 08:33:34,591 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 08:33:34,591 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:34,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:34,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1296974720, now seen corresponding path program 1 times [2023-12-21 08:33:34,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:34,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365612298] [2023-12-21 08:33:34,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:34,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:34,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:34,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:33:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:34,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:33:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:34,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:33:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:34,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 08:33:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:34,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 08:33:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:34,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:33:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:34,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:34,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 08:33:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:34,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 08:33:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:34,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 08:33:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:34,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 08:33:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:34,842 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 08:33:34,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:34,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365612298] [2023-12-21 08:33:34,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365612298] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:34,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817350865] [2023-12-21 08:33:34,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:34,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:34,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:34,844 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 08:33:34,867 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 08:33:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:35,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:33:35,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:35,159 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 08:33:35,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:35,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817350865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:35,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:35,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:33:35,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872867182] [2023-12-21 08:33:35,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:35,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:33:35,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:35,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:33:35,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:33:35,161 INFO L87 Difference]: Start difference. First operand 1191 states and 2016 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:35,273 INFO L93 Difference]: Finished difference Result 2353 states and 3989 transitions. [2023-12-21 08:33:35,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:33:35,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2023-12-21 08:33:35,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:35,284 INFO L225 Difference]: With dead ends: 2353 [2023-12-21 08:33:35,284 INFO L226 Difference]: Without dead ends: 1191 [2023-12-21 08:33:35,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:33:35,289 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 35 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:33:35,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2786 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:33:35,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2023-12-21 08:33:35,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1191. [2023-12-21 08:33:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7055730809674028) internal successors, (1622), 982 states have internal predecessors, (1622), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-12-21 08:33:35,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2011 transitions. [2023-12-21 08:33:35,326 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2011 transitions. Word has length 111 [2023-12-21 08:33:35,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:35,327 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2011 transitions. [2023-12-21 08:33:35,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:35,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2011 transitions. [2023-12-21 08:33:35,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 08:33:35,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:35,331 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] [2023-12-21 08:33:35,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 08:33:35,539 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 08:33:35,539 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:35,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:35,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1745124619, now seen corresponding path program 1 times [2023-12-21 08:33:35,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:35,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791060941] [2023-12-21 08:33:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:35,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:35,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:35,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:33:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:33:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:35,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:35,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:35,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 08:33:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:35,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 08:33:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:35,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:33:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:35,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:35,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 08:33:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:35,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 08:33:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:35,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 08:33:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:35,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 08:33:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:35,799 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 08:33:35,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791060941] [2023-12-21 08:33:35,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791060941] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839139580] [2023-12-21 08:33:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:35,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:35,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:35,801 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 08:33:35,827 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 08:33:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:36,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:33:36,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:36,092 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 08:33:36,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:36,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839139580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:36,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:36,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-12-21 08:33:36,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322930025] [2023-12-21 08:33:36,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:36,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:33:36,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:36,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:33:36,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:33:36,094 INFO L87 Difference]: Start difference. First operand 1191 states and 2011 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:36,278 INFO L93 Difference]: Finished difference Result 2349 states and 3980 transitions. [2023-12-21 08:33:36,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:33:36,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2023-12-21 08:33:36,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:36,285 INFO L225 Difference]: With dead ends: 2349 [2023-12-21 08:33:36,285 INFO L226 Difference]: Without dead ends: 1243 [2023-12-21 08:33:36,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:33:36,290 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 239 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2622 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 08:33:36,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2622 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:33:36,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2023-12-21 08:33:36,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1235. [2023-12-21 08:33:36,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 994 states have (on average 1.715291750503018) internal successors, (1705), 1025 states have internal predecessors, (1705), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-12-21 08:33:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 2093 transitions. [2023-12-21 08:33:36,324 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 2093 transitions. Word has length 112 [2023-12-21 08:33:36,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:36,324 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 2093 transitions. [2023-12-21 08:33:36,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:36,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 2093 transitions. [2023-12-21 08:33:36,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 08:33:36,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:36,328 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] [2023-12-21 08:33:36,343 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 08:33:36,535 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 08:33:36,536 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:36,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:36,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1259957056, now seen corresponding path program 1 times [2023-12-21 08:33:36,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:36,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329472391] [2023-12-21 08:33:36,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:36,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:36,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:36,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:33:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:36,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:33:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:36,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:36,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:36,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 08:33:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:36,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 08:33:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:36,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 08:33:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:36,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:36,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 08:33:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:36,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 08:33:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 08:33:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:36,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 08:33:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:33:36,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:36,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329472391] [2023-12-21 08:33:36,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329472391] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:36,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785558016] [2023-12-21 08:33:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:36,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:36,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:36,790 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 08:33:36,810 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 08:33:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:37,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:33:37,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 08:33:37,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:37,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785558016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:37,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:37,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-12-21 08:33:37,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610805188] [2023-12-21 08:33:37,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:37,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:33:37,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:37,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:33:37,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:33:37,096 INFO L87 Difference]: Start difference. First operand 1235 states and 2093 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:37,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:37,261 INFO L93 Difference]: Finished difference Result 2383 states and 4029 transitions. [2023-12-21 08:33:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:33:37,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2023-12-21 08:33:37,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:37,270 INFO L225 Difference]: With dead ends: 2383 [2023-12-21 08:33:37,270 INFO L226 Difference]: Without dead ends: 1277 [2023-12-21 08:33:37,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:33:37,277 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 113 mSDsluCounter, 4562 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5494 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 08:33:37,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5494 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:33:37,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-12-21 08:33:37,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1247. [2023-12-21 08:33:37,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1003 states have (on average 1.7138584247258226) internal successors, (1719), 1036 states have internal predecessors, (1719), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-12-21 08:33:37,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2111 transitions. [2023-12-21 08:33:37,368 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2111 transitions. Word has length 113 [2023-12-21 08:33:37,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:37,368 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2111 transitions. [2023-12-21 08:33:37,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:37,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2111 transitions. [2023-12-21 08:33:37,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 08:33:37,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:37,374 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, 1, 1, 1, 1, 1, 1, 1, 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 08:33:37,385 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 08:33:37,582 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 08:33:37,582 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:37,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:37,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1299475515, now seen corresponding path program 1 times [2023-12-21 08:33:37,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:37,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045981213] [2023-12-21 08:33:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:37,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:37,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:37,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:33:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:37,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:33:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:37,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:37,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:37,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 08:33:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:37,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:33:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:37,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 08:33:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:37,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:37,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 08:33:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:37,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 08:33:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:37,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 08:33:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:37,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 08:33:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:37,825 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 08:33:37,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:37,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045981213] [2023-12-21 08:33:37,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045981213] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:37,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860635586] [2023-12-21 08:33:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:37,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:37,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:37,828 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 08:33:37,852 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 08:33:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:38,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:33:38,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:38,143 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 08:33:38,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:38,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860635586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:38,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:38,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-12-21 08:33:38,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898970648] [2023-12-21 08:33:38,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:38,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:33:38,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:38,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:33:38,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:33:38,145 INFO L87 Difference]: Start difference. First operand 1247 states and 2111 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:38,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:38,336 INFO L93 Difference]: Finished difference Result 2391 states and 4042 transitions. [2023-12-21 08:33:38,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:33:38,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2023-12-21 08:33:38,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:38,344 INFO L225 Difference]: With dead ends: 2391 [2023-12-21 08:33:38,344 INFO L226 Difference]: Without dead ends: 1285 [2023-12-21 08:33:38,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:33:38,349 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 124 mSDsluCounter, 4555 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5488 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 08:33:38,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5488 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:33:38,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2023-12-21 08:33:38,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1247. [2023-12-21 08:33:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1003 states have (on average 1.7138584247258226) internal successors, (1719), 1036 states have internal predecessors, (1719), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-12-21 08:33:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2111 transitions. [2023-12-21 08:33:38,390 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2111 transitions. Word has length 114 [2023-12-21 08:33:38,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:38,390 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2111 transitions. [2023-12-21 08:33:38,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:38,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2111 transitions. [2023-12-21 08:33:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 08:33:38,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:38,395 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, 1, 1, 1, 1, 1, 1, 1, 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 08:33:38,402 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 08:33:38,602 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 08:33:38,602 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:38,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:38,603 INFO L85 PathProgramCache]: Analyzing trace with hash 401524923, now seen corresponding path program 1 times [2023-12-21 08:33:38,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:38,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718398644] [2023-12-21 08:33:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:38,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:38,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:38,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:33:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:33:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:38,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:38,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 08:33:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:38,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:33:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:38,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 08:33:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:38,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:38,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 08:33:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:38,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 08:33:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:38,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 08:33:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:38,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 08:33:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:38,837 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 08:33:38,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:38,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718398644] [2023-12-21 08:33:38,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718398644] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:38,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826186313] [2023-12-21 08:33:38,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:38,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:38,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:38,840 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 08:33:38,860 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 08:33:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:39,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:33:39,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:39,161 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 08:33:39,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:39,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826186313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:39,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:39,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-12-21 08:33:39,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800462581] [2023-12-21 08:33:39,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:39,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:33:39,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:39,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:33:39,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:33:39,163 INFO L87 Difference]: Start difference. First operand 1247 states and 2111 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:39,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:39,426 INFO L93 Difference]: Finished difference Result 2393 states and 4044 transitions. [2023-12-21 08:33:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:33:39,427 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2023-12-21 08:33:39,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:39,433 INFO L225 Difference]: With dead ends: 2393 [2023-12-21 08:33:39,433 INFO L226 Difference]: Without dead ends: 1287 [2023-12-21 08:33:39,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-21 08:33:39,437 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 132 mSDsluCounter, 5440 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6362 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 08:33:39,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6362 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 08:33:39,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2023-12-21 08:33:39,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1247. [2023-12-21 08:33:39,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1003 states have (on average 1.7138584247258226) internal successors, (1719), 1036 states have internal predecessors, (1719), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-12-21 08:33:39,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2111 transitions. [2023-12-21 08:33:39,472 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2111 transitions. Word has length 114 [2023-12-21 08:33:39,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:39,472 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2111 transitions. [2023-12-21 08:33:39,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2111 transitions. [2023-12-21 08:33:39,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 08:33:39,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:39,477 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] [2023-12-21 08:33:39,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 08:33:39,684 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 08:33:39,685 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:39,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:39,685 INFO L85 PathProgramCache]: Analyzing trace with hash 621339121, now seen corresponding path program 1 times [2023-12-21 08:33:39,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:39,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135298959] [2023-12-21 08:33:39,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:39,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:39,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:33:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:39,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:33:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:39,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:39,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 08:33:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 08:33:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:39,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:33:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:39,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 08:33:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:39,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:39,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 08:33:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 08:33:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:39,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 08:33:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:39,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 08:33:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 08:33:39,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:39,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135298959] [2023-12-21 08:33:39,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135298959] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:39,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206662067] [2023-12-21 08:33:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:39,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:39,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:39,921 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 08:33:39,941 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 08:33:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:40,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:33:40,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:40,290 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 08:33:40,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:40,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206662067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:40,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:40,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:33:40,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451648877] [2023-12-21 08:33:40,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:40,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:33:40,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:40,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:33:40,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:33:40,292 INFO L87 Difference]: Start difference. First operand 1247 states and 2111 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:40,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:40,380 INFO L93 Difference]: Finished difference Result 2425 states and 4108 transitions. [2023-12-21 08:33:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 08:33:40,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2023-12-21 08:33:40,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:40,387 INFO L225 Difference]: With dead ends: 2425 [2023-12-21 08:33:40,387 INFO L226 Difference]: Without dead ends: 1247 [2023-12-21 08:33:40,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:33:40,391 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 10 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2788 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 08:33:40,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2788 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:33:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2023-12-21 08:33:40,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1247. [2023-12-21 08:33:40,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1003 states have (on average 1.7108673978065803) internal successors, (1716), 1036 states have internal predecessors, (1716), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-12-21 08:33:40,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2108 transitions. [2023-12-21 08:33:40,424 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2108 transitions. Word has length 114 [2023-12-21 08:33:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:40,424 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2108 transitions. [2023-12-21 08:33:40,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2108 transitions. [2023-12-21 08:33:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 08:33:40,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:40,429 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] [2023-12-21 08:33:40,439 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 08:33:40,636 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 08:33:40,637 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:40,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:40,637 INFO L85 PathProgramCache]: Analyzing trace with hash 801152322, now seen corresponding path program 1 times [2023-12-21 08:33:40,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:40,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771348396] [2023-12-21 08:33:40,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:40,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:40,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:40,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:33:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:40,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:33:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:40,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:40,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:40,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 08:33:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:40,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 08:33:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:40,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:33:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:40,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:40,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 08:33:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:40,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 08:33:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:40,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 08:33:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:40,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 08:33:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:40,902 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 08:33:40,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:40,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771348396] [2023-12-21 08:33:40,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771348396] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:40,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385368417] [2023-12-21 08:33:40,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:40,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:40,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:40,904 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 08:33:40,908 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 08:33:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:41,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:33:41,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:41,265 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 08:33:41,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:41,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385368417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:41,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:41,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-12-21 08:33:41,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703374364] [2023-12-21 08:33:41,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:41,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:33:41,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:41,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:33:41,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:33:41,267 INFO L87 Difference]: Start difference. First operand 1247 states and 2108 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:41,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:41,495 INFO L93 Difference]: Finished difference Result 2385 states and 4028 transitions. [2023-12-21 08:33:41,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:33:41,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2023-12-21 08:33:41,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:41,502 INFO L225 Difference]: With dead ends: 2385 [2023-12-21 08:33:41,502 INFO L226 Difference]: Without dead ends: 1279 [2023-12-21 08:33:41,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-21 08:33:41,506 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 142 mSDsluCounter, 5413 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 6332 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 08:33:41,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 6332 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:33:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2023-12-21 08:33:41,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1247. [2023-12-21 08:33:41,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1003 states have (on average 1.7108673978065803) internal successors, (1716), 1036 states have internal predecessors, (1716), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-12-21 08:33:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2108 transitions. [2023-12-21 08:33:41,537 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2108 transitions. Word has length 115 [2023-12-21 08:33:41,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:41,537 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2108 transitions. [2023-12-21 08:33:41,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2108 transitions. [2023-12-21 08:33:41,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 08:33:41,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:41,542 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] [2023-12-21 08:33:41,552 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 08:33:41,749 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 08:33:41,749 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:41,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:41,749 INFO L85 PathProgramCache]: Analyzing trace with hash -177939296, now seen corresponding path program 1 times [2023-12-21 08:33:41,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:41,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25836969] [2023-12-21 08:33:41,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:41,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:41,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:41,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 08:33:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:41,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:33:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:41,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:41,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:41,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 08:33:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:41,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:33:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:41,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:33:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:41,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:41,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 08:33:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:41,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 08:33:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:41,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 08:33:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:41,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 08:33:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:41,990 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 08:33:41,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:41,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25836969] [2023-12-21 08:33:41,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25836969] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:41,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791117289] [2023-12-21 08:33:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:41,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:41,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:41,991 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 08:33:42,011 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 08:33:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:42,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 08:33:42,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:42,298 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 08:33:42,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:42,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791117289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:42,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:42,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-21 08:33:42,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371067004] [2023-12-21 08:33:42,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:42,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:33:42,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:42,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:33:42,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:33:42,300 INFO L87 Difference]: Start difference. First operand 1247 states and 2108 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:42,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:42,392 INFO L93 Difference]: Finished difference Result 2476 states and 4197 transitions. [2023-12-21 08:33:42,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:33:42,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2023-12-21 08:33:42,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:42,407 INFO L225 Difference]: With dead ends: 2476 [2023-12-21 08:33:42,407 INFO L226 Difference]: Without dead ends: 1213 [2023-12-21 08:33:42,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 08:33:42,413 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 13 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2787 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 08:33:42,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2787 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:33:42,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2023-12-21 08:33:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1213. [2023-12-21 08:33:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 972 states have (on average 1.6975308641975309) internal successors, (1650), 1003 states have internal predecessors, (1650), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-12-21 08:33:42,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 2038 transitions. [2023-12-21 08:33:42,458 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 2038 transitions. Word has length 116 [2023-12-21 08:33:42,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:42,458 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 2038 transitions. [2023-12-21 08:33:42,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:42,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 2038 transitions. [2023-12-21 08:33:42,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 08:33:42,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:42,463 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] [2023-12-21 08:33:42,470 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 08:33:42,670 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 08:33:42,670 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:42,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:42,671 INFO L85 PathProgramCache]: Analyzing trace with hash -629606631, now seen corresponding path program 1 times [2023-12-21 08:33:42,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:42,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793398441] [2023-12-21 08:33:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:42,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:42,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:42,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:42,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 08:33:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:42,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:42,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:42,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 08:33:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:42,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 08:33:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:42,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 08:33:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:42,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:42,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 08:33:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:42,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 08:33:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:42,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 08:33:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:42,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 08:33:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:42,969 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 08:33:42,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:42,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793398441] [2023-12-21 08:33:42,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793398441] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:33:42,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596096222] [2023-12-21 08:33:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:42,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:33:42,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:33:42,976 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 08:33:43,000 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 08:33:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:43,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 08:33:43,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:33:43,351 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 08:33:43,351 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:33:43,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596096222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:43,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:33:43,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2023-12-21 08:33:43,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612468437] [2023-12-21 08:33:43,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:43,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:33:43,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:43,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:33:43,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:33:43,353 INFO L87 Difference]: Start difference. First operand 1213 states and 2038 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:43,627 INFO L93 Difference]: Finished difference Result 2432 states and 4084 transitions. [2023-12-21 08:33:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:33:43,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2023-12-21 08:33:43,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:43,633 INFO L225 Difference]: With dead ends: 2432 [2023-12-21 08:33:43,633 INFO L226 Difference]: Without dead ends: 1232 [2023-12-21 08:33:43,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:33:43,637 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 134 mSDsluCounter, 4546 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5486 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 08:33:43,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5486 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 08:33:43,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2023-12-21 08:33:43,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1206. [2023-12-21 08:33:43,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 965 states have (on average 1.6932642487046632) internal successors, (1634), 996 states have internal predecessors, (1634), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-12-21 08:33:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2022 transitions. [2023-12-21 08:33:43,673 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2022 transitions. Word has length 117 [2023-12-21 08:33:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:43,673 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2022 transitions. [2023-12-21 08:33:43,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:33:43,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2022 transitions. [2023-12-21 08:33:43,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 08:33:43,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:43,677 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] [2023-12-21 08:33:43,687 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 08:33:43,889 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 08:33:43,889 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:43,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:43,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1803846594, now seen corresponding path program 1 times [2023-12-21 08:33:43,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:43,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730416343] [2023-12-21 08:33:43,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:43,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:43,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:44,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:33:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:44,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:44,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:44,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 08:33:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:44,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 08:33:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:44,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 08:33:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:44,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:44,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 08:33:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:44,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 08:33:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:44,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 08:33:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:44,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 08:33:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:33:44,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:44,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730416343] [2023-12-21 08:33:44,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730416343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:44,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:33:44,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 08:33:44,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387780172] [2023-12-21 08:33:44,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:44,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:33:44,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:44,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:33:44,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:33:44,185 INFO L87 Difference]: Start difference. First operand 1206 states and 2022 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:48,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:48,664 INFO L93 Difference]: Finished difference Result 2807 states and 4747 transitions. [2023-12-21 08:33:48,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 08:33:48,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-12-21 08:33:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:48,673 INFO L225 Difference]: With dead ends: 2807 [2023-12-21 08:33:48,673 INFO L226 Difference]: Without dead ends: 1697 [2023-12-21 08:33:48,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:33:48,677 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1549 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-21 08:33:48,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 1310 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-21 08:33:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2023-12-21 08:33:48,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1266. [2023-12-21 08:33:48,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1011 states have (on average 1.6844708209693373) internal successors, (1703), 1042 states have internal predecessors, (1703), 201 states have call successors, (201), 51 states have call predecessors, (201), 53 states have return successors, (220), 196 states have call predecessors, (220), 197 states have call successors, (220) [2023-12-21 08:33:48,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 2124 transitions. [2023-12-21 08:33:48,846 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 2124 transitions. Word has length 118 [2023-12-21 08:33:48,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:48,846 INFO L495 AbstractCegarLoop]: Abstraction has 1266 states and 2124 transitions. [2023-12-21 08:33:48,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:48,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 2124 transitions. [2023-12-21 08:33:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 08:33:48,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:48,850 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:33:48,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 08:33:48,850 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:48,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:48,851 INFO L85 PathProgramCache]: Analyzing trace with hash -2101313970, now seen corresponding path program 1 times [2023-12-21 08:33:48,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:48,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456092456] [2023-12-21 08:33:48,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:48,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:48,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:49,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:49,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:33:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:49,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:49,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:33:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 08:33:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 08:33:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:49,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 08:33:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:49,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:49,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 08:33:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:49,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 08:33:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:49,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 08:33:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:49,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 08:33:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:49,122 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 08:33:49,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:49,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456092456] [2023-12-21 08:33:49,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456092456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:49,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:33:49,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 08:33:49,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133476554] [2023-12-21 08:33:49,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:49,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:33:49,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:49,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:33:49,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:33:49,123 INFO L87 Difference]: Start difference. First operand 1266 states and 2124 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:53,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:33:53,381 INFO L93 Difference]: Finished difference Result 2894 states and 4887 transitions. [2023-12-21 08:33:53,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 08:33:53,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-12-21 08:33:53,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:33:53,390 INFO L225 Difference]: With dead ends: 2894 [2023-12-21 08:33:53,390 INFO L226 Difference]: Without dead ends: 1633 [2023-12-21 08:33:53,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:33:53,393 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1483 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-21 08:33:53,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 1292 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-21 08:33:53,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2023-12-21 08:33:53,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1239. [2023-12-21 08:33:53,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 987 states have (on average 1.67983789260385) internal successors, (1658), 1016 states have internal predecessors, (1658), 200 states have call successors, (200), 51 states have call predecessors, (200), 51 states have return successors, (217), 195 states have call predecessors, (217), 196 states have call successors, (217) [2023-12-21 08:33:53,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 2075 transitions. [2023-12-21 08:33:53,533 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 2075 transitions. Word has length 118 [2023-12-21 08:33:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:33:53,533 INFO L495 AbstractCegarLoop]: Abstraction has 1239 states and 2075 transitions. [2023-12-21 08:33:53,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:33:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 2075 transitions. [2023-12-21 08:33:53,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 08:33:53,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:33:53,536 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] [2023-12-21 08:33:53,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 08:33:53,537 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:33:53,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:33:53,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1730527367, now seen corresponding path program 1 times [2023-12-21 08:33:53,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:33:53,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598540406] [2023-12-21 08:33:53,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:33:53,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:33:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:53,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:33:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:53,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:53,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:33:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:53,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:33:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:53,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:33:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:53,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:33:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:53,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:33:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:53,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:33:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:53,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-21 08:33:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:53,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 08:33:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:53,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 08:33:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:53,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 08:33:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:53,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 08:33:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:33:53,815 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 08:33:53,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:33:53,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598540406] [2023-12-21 08:33:53,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598540406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:33:53,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:33:53,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 08:33:53,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997269223] [2023-12-21 08:33:53,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:33:53,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:33:53,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:33:53,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:33:53,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:33:53,819 INFO L87 Difference]: Start difference. First operand 1239 states and 2075 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 08:34:00,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:00,246 INFO L93 Difference]: Finished difference Result 4184 states and 7318 transitions. [2023-12-21 08:34:00,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 08:34:00,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 119 [2023-12-21 08:34:00,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:00,256 INFO L225 Difference]: With dead ends: 4184 [2023-12-21 08:34:00,256 INFO L226 Difference]: Without dead ends: 3026 [2023-12-21 08:34:00,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:34:00,262 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 4434 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 4022 mSolverCounterSat, 1349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4444 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 5371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1349 IncrementalHoareTripleChecker+Valid, 4022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:00,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4444 Valid, 1426 Invalid, 5371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1349 Valid, 4022 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-21 08:34:00,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2023-12-21 08:34:00,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2352. [2023-12-21 08:34:00,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 1871 states have (on average 1.675040085515767) internal successors, (3134), 1927 states have internal predecessors, (3134), 383 states have call successors, (383), 96 states have call predecessors, (383), 97 states have return successors, (455), 376 states have call predecessors, (455), 377 states have call successors, (455) [2023-12-21 08:34:00,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3972 transitions. [2023-12-21 08:34:00,623 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3972 transitions. Word has length 119 [2023-12-21 08:34:00,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:00,624 INFO L495 AbstractCegarLoop]: Abstraction has 2352 states and 3972 transitions. [2023-12-21 08:34:00,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 08:34:00,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3972 transitions. [2023-12-21 08:34:00,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 08:34:00,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:00,627 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] [2023-12-21 08:34:00,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 08:34:00,627 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:00,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:00,628 INFO L85 PathProgramCache]: Analyzing trace with hash 631725454, now seen corresponding path program 1 times [2023-12-21 08:34:00,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:00,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715953586] [2023-12-21 08:34:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:00,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:34:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:34:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:34:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:34:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-21 08:34:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 08:34:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 08:34:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 08:34:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 08:34:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:00,864 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 08:34:00,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:00,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715953586] [2023-12-21 08:34:00,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715953586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:00,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:34:00,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 08:34:00,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104142313] [2023-12-21 08:34:00,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:00,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:34:00,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:00,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:34:00,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:34:00,865 INFO L87 Difference]: Start difference. First operand 2352 states and 3972 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 08:34:07,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:07,381 INFO L93 Difference]: Finished difference Result 8101 states and 14478 transitions. [2023-12-21 08:34:07,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 08:34:07,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 120 [2023-12-21 08:34:07,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:07,405 INFO L225 Difference]: With dead ends: 8101 [2023-12-21 08:34:07,405 INFO L226 Difference]: Without dead ends: 5830 [2023-12-21 08:34:07,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:34:07,417 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 4427 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 4098 mSolverCounterSat, 1307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4438 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 5405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1307 IncrementalHoareTripleChecker+Valid, 4098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:07,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4438 Valid, 1525 Invalid, 5405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1307 Valid, 4098 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-21 08:34:07,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5830 states. [2023-12-21 08:34:08,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5830 to 4588. [2023-12-21 08:34:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4588 states, 3647 states have (on average 1.6682204551686317) internal successors, (6084), 3757 states have internal predecessors, (6084), 751 states have call successors, (751), 186 states have call predecessors, (751), 189 states have return successors, (987), 740 states have call predecessors, (987), 741 states have call successors, (987) [2023-12-21 08:34:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 7822 transitions. [2023-12-21 08:34:08,040 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 7822 transitions. Word has length 120 [2023-12-21 08:34:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:08,040 INFO L495 AbstractCegarLoop]: Abstraction has 4588 states and 7822 transitions. [2023-12-21 08:34:08,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 08:34:08,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 7822 transitions. [2023-12-21 08:34:08,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 08:34:08,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:08,045 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] [2023-12-21 08:34:08,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 08:34:08,045 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:08,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash 889807724, now seen corresponding path program 1 times [2023-12-21 08:34:08,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:08,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305435270] [2023-12-21 08:34:08,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:08,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:34:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:34:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:34:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:34:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-21 08:34:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 08:34:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 08:34:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 08:34:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 08:34:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:08,431 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 08:34:08,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:08,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305435270] [2023-12-21 08:34:08,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305435270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:08,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:34:08,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 08:34:08,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617319854] [2023-12-21 08:34:08,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:08,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 08:34:08,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:08,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 08:34:08,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:34:08,433 INFO L87 Difference]: Start difference. First operand 4588 states and 7822 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:34:14,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:14,510 INFO L93 Difference]: Finished difference Result 10576 states and 18504 transitions. [2023-12-21 08:34:14,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 08:34:14,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2023-12-21 08:34:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:14,541 INFO L225 Difference]: With dead ends: 10576 [2023-12-21 08:34:14,541 INFO L226 Difference]: Without dead ends: 6072 [2023-12-21 08:34:14,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:34:14,559 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 1498 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 6247 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 3274 SdHoareTripleChecker+Invalid, 6644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 6247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:14,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 3274 Invalid, 6644 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [397 Valid, 6247 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-21 08:34:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6072 states. [2023-12-21 08:34:15,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6072 to 4644. [2023-12-21 08:34:15,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4644 states, 3687 states have (on average 1.6609709791158123) internal successors, (6124), 3797 states have internal predecessors, (6124), 751 states have call successors, (751), 186 states have call predecessors, (751), 205 states have return successors, (1027), 756 states have call predecessors, (1027), 741 states have call successors, (1027) [2023-12-21 08:34:15,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4644 states to 4644 states and 7902 transitions. [2023-12-21 08:34:15,199 INFO L78 Accepts]: Start accepts. Automaton has 4644 states and 7902 transitions. Word has length 121 [2023-12-21 08:34:15,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:15,199 INFO L495 AbstractCegarLoop]: Abstraction has 4644 states and 7902 transitions. [2023-12-21 08:34:15,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:34:15,200 INFO L276 IsEmpty]: Start isEmpty. Operand 4644 states and 7902 transitions. [2023-12-21 08:34:15,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 08:34:15,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:15,204 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] [2023-12-21 08:34:15,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 08:34:15,204 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:15,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:15,204 INFO L85 PathProgramCache]: Analyzing trace with hash -242503301, now seen corresponding path program 1 times [2023-12-21 08:34:15,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:15,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104463458] [2023-12-21 08:34:15,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:15,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:15,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:15,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:34:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:15,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:15,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:15,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:34:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:15,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:34:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:15,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:34:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:15,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:34:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:15,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 08:34:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:15,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 08:34:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:15,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 08:34:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:15,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 08:34:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:15,528 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 08:34:15,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:15,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104463458] [2023-12-21 08:34:15,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104463458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:15,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:34:15,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 08:34:15,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324806770] [2023-12-21 08:34:15,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:15,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 08:34:15,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:15,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 08:34:15,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:34:15,529 INFO L87 Difference]: Start difference. First operand 4644 states and 7902 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:34:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:21,106 INFO L93 Difference]: Finished difference Result 10672 states and 18632 transitions. [2023-12-21 08:34:21,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 08:34:21,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2023-12-21 08:34:21,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:21,129 INFO L225 Difference]: With dead ends: 10672 [2023-12-21 08:34:21,129 INFO L226 Difference]: Without dead ends: 6112 [2023-12-21 08:34:21,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:34:21,152 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1482 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 5389 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 2779 SdHoareTripleChecker+Invalid, 5780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 5389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:21,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 2779 Invalid, 5780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 5389 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-21 08:34:21,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6112 states. [2023-12-21 08:34:21,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6112 to 4652. [2023-12-21 08:34:21,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4652 states, 3695 states have (on average 1.6595399188092017) internal successors, (6132), 3797 states have internal predecessors, (6132), 751 states have call successors, (751), 186 states have call predecessors, (751), 205 states have return successors, (1027), 764 states have call predecessors, (1027), 741 states have call successors, (1027) [2023-12-21 08:34:21,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4652 states to 4652 states and 7910 transitions. [2023-12-21 08:34:21,846 INFO L78 Accepts]: Start accepts. Automaton has 4652 states and 7910 transitions. Word has length 122 [2023-12-21 08:34:21,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:21,846 INFO L495 AbstractCegarLoop]: Abstraction has 4652 states and 7910 transitions. [2023-12-21 08:34:21,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:34:21,846 INFO L276 IsEmpty]: Start isEmpty. Operand 4652 states and 7910 transitions. [2023-12-21 08:34:21,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 08:34:21,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:21,850 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] [2023-12-21 08:34:21,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 08:34:21,850 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:21,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:21,850 INFO L85 PathProgramCache]: Analyzing trace with hash -477927397, now seen corresponding path program 1 times [2023-12-21 08:34:21,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:21,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163101784] [2023-12-21 08:34:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:21,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:21,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:34:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:34:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:34:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:34:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:34:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 08:34:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 08:34:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 08:34:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 08:34:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:22,130 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 08:34:22,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:22,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163101784] [2023-12-21 08:34:22,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163101784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:22,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:34:22,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 08:34:22,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642779902] [2023-12-21 08:34:22,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:22,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:34:22,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:22,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:34:22,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:34:22,132 INFO L87 Difference]: Start difference. First operand 4652 states and 7910 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:34:26,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:26,075 INFO L93 Difference]: Finished difference Result 10468 states and 18212 transitions. [2023-12-21 08:34:26,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:34:26,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2023-12-21 08:34:26,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:26,094 INFO L225 Difference]: With dead ends: 10468 [2023-12-21 08:34:26,094 INFO L226 Difference]: Without dead ends: 5900 [2023-12-21 08:34:26,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:34:26,113 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1476 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:26,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1361 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 2757 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 08:34:26,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2023-12-21 08:34:26,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 4646. [2023-12-21 08:34:26,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4646 states, 3695 states have (on average 1.6584573748308524) internal successors, (6128), 3797 states have internal predecessors, (6128), 745 states have call successors, (745), 186 states have call predecessors, (745), 205 states have return successors, (1015), 758 states have call predecessors, (1015), 735 states have call successors, (1015) [2023-12-21 08:34:26,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 7888 transitions. [2023-12-21 08:34:26,744 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 7888 transitions. Word has length 122 [2023-12-21 08:34:26,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:26,744 INFO L495 AbstractCegarLoop]: Abstraction has 4646 states and 7888 transitions. [2023-12-21 08:34:26,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:34:26,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 7888 transitions. [2023-12-21 08:34:26,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 08:34:26,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:26,747 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] [2023-12-21 08:34:26,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 08:34:26,748 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:26,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:26,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1747948052, now seen corresponding path program 1 times [2023-12-21 08:34:26,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:26,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383923235] [2023-12-21 08:34:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:26,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:26,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:26,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:26,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:34:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:26,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:27,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:27,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:34:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:27,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:34:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:27,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:34:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:27,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:27,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 08:34:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:27,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 08:34:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:27,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 08:34:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:27,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 08:34:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:27,076 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 08:34:27,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:27,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383923235] [2023-12-21 08:34:27,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383923235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:27,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:34:27,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 08:34:27,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784904459] [2023-12-21 08:34:27,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:27,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 08:34:27,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:27,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 08:34:27,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:34:27,077 INFO L87 Difference]: Start difference. First operand 4646 states and 7888 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:34:32,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:32,993 INFO L93 Difference]: Finished difference Result 10666 states and 18516 transitions. [2023-12-21 08:34:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 08:34:32,996 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2023-12-21 08:34:32,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:33,018 INFO L225 Difference]: With dead ends: 10666 [2023-12-21 08:34:33,018 INFO L226 Difference]: Without dead ends: 6104 [2023-12-21 08:34:33,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:34:33,033 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 1485 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 6341 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 3278 SdHoareTripleChecker+Invalid, 6739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 6341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:33,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 3278 Invalid, 6739 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [398 Valid, 6341 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-21 08:34:33,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6104 states. [2023-12-21 08:34:33,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6104 to 4648. [2023-12-21 08:34:33,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 3697 states have (on average 1.6581011631052205) internal successors, (6130), 3797 states have internal predecessors, (6130), 745 states have call successors, (745), 186 states have call predecessors, (745), 205 states have return successors, (1015), 760 states have call predecessors, (1015), 735 states have call successors, (1015) [2023-12-21 08:34:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 7890 transitions. [2023-12-21 08:34:33,849 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 7890 transitions. Word has length 124 [2023-12-21 08:34:33,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:33,849 INFO L495 AbstractCegarLoop]: Abstraction has 4648 states and 7890 transitions. [2023-12-21 08:34:33,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 08:34:33,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 7890 transitions. [2023-12-21 08:34:33,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-21 08:34:33,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:33,852 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] [2023-12-21 08:34:33,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 08:34:33,852 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:33,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:33,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1661014434, now seen corresponding path program 1 times [2023-12-21 08:34:33,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:33,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566427555] [2023-12-21 08:34:33,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:33,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:33,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:34,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:34,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:34:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:34,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:34,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:34:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:34,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:34:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:34,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:34:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:34,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:34,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-21 08:34:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:34,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 08:34:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:34,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 08:34:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:34,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 08:34:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 08:34:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:34,139 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 08:34:34,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:34,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566427555] [2023-12-21 08:34:34,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566427555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:34,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:34:34,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 08:34:34,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591525119] [2023-12-21 08:34:34,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:34,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:34:34,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:34,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:34:34,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:34:34,141 INFO L87 Difference]: Start difference. First operand 4648 states and 7890 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-21 08:34:42,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:42,871 INFO L93 Difference]: Finished difference Result 18659 states and 32769 transitions. [2023-12-21 08:34:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 08:34:42,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 133 [2023-12-21 08:34:42,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:42,925 INFO L225 Difference]: With dead ends: 18659 [2023-12-21 08:34:42,925 INFO L226 Difference]: Without dead ends: 14095 [2023-12-21 08:34:42,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:34:42,950 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 5033 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 4193 mSolverCounterSat, 1439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5096 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 5632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1439 IncrementalHoareTripleChecker+Valid, 4193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:42,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5096 Valid, 1740 Invalid, 5632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1439 Valid, 4193 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-21 08:34:42,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14095 states. [2023-12-21 08:34:44,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14095 to 11167. [2023-12-21 08:34:44,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11167 states, 8850 states have (on average 1.6410169491525424) internal successors, (14523), 9098 states have internal predecessors, (14523), 1791 states have call successors, (1791), 478 states have call predecessors, (1791), 525 states have return successors, (2568), 1830 states have call predecessors, (2568), 1769 states have call successors, (2568) [2023-12-21 08:34:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11167 states to 11167 states and 18882 transitions. [2023-12-21 08:34:44,497 INFO L78 Accepts]: Start accepts. Automaton has 11167 states and 18882 transitions. Word has length 133 [2023-12-21 08:34:44,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:44,497 INFO L495 AbstractCegarLoop]: Abstraction has 11167 states and 18882 transitions. [2023-12-21 08:34:44,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-21 08:34:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 11167 states and 18882 transitions. [2023-12-21 08:34:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 08:34:44,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:44,500 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] [2023-12-21 08:34:44,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 08:34:44,500 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:44,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:44,500 INFO L85 PathProgramCache]: Analyzing trace with hash 820024711, now seen corresponding path program 1 times [2023-12-21 08:34:44,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:44,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854851511] [2023-12-21 08:34:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:44,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:34:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:34:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:34:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:34:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-21 08:34:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:34:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 08:34:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 08:34:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 08:34:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-21 08:34:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:44,804 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 08:34:44,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:44,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854851511] [2023-12-21 08:34:44,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854851511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:44,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:34:44,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 08:34:44,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832650520] [2023-12-21 08:34:44,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:44,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:34:44,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:44,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:34:44,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:34:44,806 INFO L87 Difference]: Start difference. First operand 11167 states and 18882 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:34:51,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:51,237 INFO L93 Difference]: Finished difference Result 24955 states and 43742 transitions. [2023-12-21 08:34:51,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 08:34:51,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2023-12-21 08:34:51,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:51,334 INFO L225 Difference]: With dead ends: 24955 [2023-12-21 08:34:51,334 INFO L226 Difference]: Without dead ends: 14145 [2023-12-21 08:34:51,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:34:51,388 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 1464 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 2772 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 3165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:51,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 1346 Invalid, 3165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2772 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-21 08:34:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14145 states. [2023-12-21 08:34:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14145 to 11247. [2023-12-21 08:34:53,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11247 states, 8910 states have (on average 1.6362514029180695) internal successors, (14579), 9158 states have internal predecessors, (14579), 1791 states have call successors, (1791), 498 states have call predecessors, (1791), 545 states have return successors, (2588), 1830 states have call predecessors, (2588), 1769 states have call successors, (2588) [2023-12-21 08:34:53,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11247 states to 11247 states and 18958 transitions. [2023-12-21 08:34:53,286 INFO L78 Accepts]: Start accepts. Automaton has 11247 states and 18958 transitions. Word has length 136 [2023-12-21 08:34:53,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:34:53,287 INFO L495 AbstractCegarLoop]: Abstraction has 11247 states and 18958 transitions. [2023-12-21 08:34:53,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:34:53,287 INFO L276 IsEmpty]: Start isEmpty. Operand 11247 states and 18958 transitions. [2023-12-21 08:34:53,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 08:34:53,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:34:53,291 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] [2023-12-21 08:34:53,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 08:34:53,292 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:34:53,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:34:53,292 INFO L85 PathProgramCache]: Analyzing trace with hash 174939902, now seen corresponding path program 1 times [2023-12-21 08:34:53,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:34:53,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819496861] [2023-12-21 08:34:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:34:53,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:34:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:34:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:34:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:34:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:34:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:34:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:34:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:34:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:34:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:34:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 08:34:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 08:34:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 08:34:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 08:34:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:34:53,572 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 08:34:53,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:34:53,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819496861] [2023-12-21 08:34:53,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819496861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:34:53,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:34:53,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 08:34:53,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903482688] [2023-12-21 08:34:53,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:34:53,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:34:53,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:34:53,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:34:53,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:34:53,573 INFO L87 Difference]: Start difference. First operand 11247 states and 18958 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-21 08:34:59,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:34:59,797 INFO L93 Difference]: Finished difference Result 24427 states and 42561 transitions. [2023-12-21 08:34:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:34:59,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 138 [2023-12-21 08:34:59,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:34:59,868 INFO L225 Difference]: With dead ends: 24427 [2023-12-21 08:34:59,868 INFO L226 Difference]: Without dead ends: 14897 [2023-12-21 08:34:59,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:34:59,925 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1676 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 2660 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 3060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 2660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-21 08:34:59,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 1395 Invalid, 3060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 2660 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-21 08:34:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14897 states. [2023-12-21 08:35:01,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14897 to 11999. [2023-12-21 08:35:01,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11999 states, 9614 states have (on average 1.6354275015602247) internal successors, (15723), 9910 states have internal predecessors, (15723), 1791 states have call successors, (1791), 498 states have call predecessors, (1791), 593 states have return successors, (2668), 1830 states have call predecessors, (2668), 1769 states have call successors, (2668) [2023-12-21 08:35:01,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11999 states to 11999 states and 20182 transitions. [2023-12-21 08:35:01,756 INFO L78 Accepts]: Start accepts. Automaton has 11999 states and 20182 transitions. Word has length 138 [2023-12-21 08:35:01,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:35:01,757 INFO L495 AbstractCegarLoop]: Abstraction has 11999 states and 20182 transitions. [2023-12-21 08:35:01,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-21 08:35:01,757 INFO L276 IsEmpty]: Start isEmpty. Operand 11999 states and 20182 transitions. [2023-12-21 08:35:01,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 08:35:01,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:35:01,760 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] [2023-12-21 08:35:01,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 08:35:01,761 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:35:01,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:35:01,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1242477841, now seen corresponding path program 1 times [2023-12-21 08:35:01,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:35:01,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266884358] [2023-12-21 08:35:01,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:35:01,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:35:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:01,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:35:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:02,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:35:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:35:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:02,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:35:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:02,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:35:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:02,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:35:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:02,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:35:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:02,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:35:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:02,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-21 08:35:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:02,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:35:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:02,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:35:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:02,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 08:35:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:02,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 08:35:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:02,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 08:35:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:02,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 08:35:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:02,295 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 08:35:02,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:35:02,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266884358] [2023-12-21 08:35:02,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266884358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:35:02,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:35:02,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 08:35:02,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302703831] [2023-12-21 08:35:02,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:35:02,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 08:35:02,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:35:02,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 08:35:02,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:35:02,297 INFO L87 Difference]: Start difference. First operand 11999 states and 20182 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-21 08:35:18,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:35:18,622 INFO L93 Difference]: Finished difference Result 42243 states and 74346 transitions. [2023-12-21 08:35:18,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 08:35:18,623 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 137 [2023-12-21 08:35:18,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:35:18,772 INFO L225 Difference]: With dead ends: 42243 [2023-12-21 08:35:18,772 INFO L226 Difference]: Without dead ends: 31961 [2023-12-21 08:35:18,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2023-12-21 08:35:18,820 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 7663 mSDsluCounter, 2694 mSDsCounter, 0 mSdLazyCounter, 10032 mSolverCounterSat, 2622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7673 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 12654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2622 IncrementalHoareTripleChecker+Valid, 10032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-12-21 08:35:18,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7673 Valid, 3538 Invalid, 12654 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2622 Valid, 10032 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-12-21 08:35:18,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31961 states. [2023-12-21 08:35:22,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31961 to 24369. [2023-12-21 08:35:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24369 states, 18929 states have (on average 1.6184690157958688) internal successors, (30636), 19659 states have internal predecessors, (30636), 4194 states have call successors, (4194), 930 states have call predecessors, (4194), 1245 states have return successors, (6494), 4359 states have call predecessors, (6494), 4152 states have call successors, (6494) [2023-12-21 08:35:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24369 states to 24369 states and 41324 transitions. [2023-12-21 08:35:23,251 INFO L78 Accepts]: Start accepts. Automaton has 24369 states and 41324 transitions. Word has length 137 [2023-12-21 08:35:23,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:35:23,252 INFO L495 AbstractCegarLoop]: Abstraction has 24369 states and 41324 transitions. [2023-12-21 08:35:23,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-21 08:35:23,252 INFO L276 IsEmpty]: Start isEmpty. Operand 24369 states and 41324 transitions. [2023-12-21 08:35:23,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 08:35:23,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:35:23,255 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] [2023-12-21 08:35:23,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 08:35:23,255 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:35:23,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:35:23,255 INFO L85 PathProgramCache]: Analyzing trace with hash 280810158, now seen corresponding path program 1 times [2023-12-21 08:35:23,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:35:23,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836506179] [2023-12-21 08:35:23,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:35:23,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:35:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:23,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:35:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:35:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:23,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:35:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:23,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:35:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:23,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:35:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:35:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:23,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:35:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:23,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:35:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:23,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:35:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:23,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:35:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:23,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 08:35:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:23,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 08:35:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 08:35:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:23,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 08:35:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:23,541 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 08:35:23,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:35:23,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836506179] [2023-12-21 08:35:23,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836506179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:35:23,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:35:23,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 08:35:23,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486777295] [2023-12-21 08:35:23,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:35:23,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 08:35:23,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:35:23,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 08:35:23,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 08:35:23,544 INFO L87 Difference]: Start difference. First operand 24369 states and 41324 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 4 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 08:35:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:35:33,200 INFO L93 Difference]: Finished difference Result 52919 states and 92971 transitions. [2023-12-21 08:35:33,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 08:35:33,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 4 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 137 [2023-12-21 08:35:33,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:35:33,363 INFO L225 Difference]: With dead ends: 52919 [2023-12-21 08:35:33,363 INFO L226 Difference]: Without dead ends: 31971 [2023-12-21 08:35:33,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 08:35:33,457 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1560 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 08:35:33,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 1007 Invalid, 2388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 08:35:33,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31971 states. [2023-12-21 08:35:37,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31971 to 26257. [2023-12-21 08:35:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26257 states, 20625 states have (on average 1.6048484848484847) internal successors, (33100), 21363 states have internal predecessors, (33100), 4370 states have call successors, (4370), 930 states have call predecessors, (4370), 1261 states have return successors, (6794), 4543 states have call predecessors, (6794), 4328 states have call successors, (6794) [2023-12-21 08:35:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26257 states to 26257 states and 44264 transitions. [2023-12-21 08:35:37,881 INFO L78 Accepts]: Start accepts. Automaton has 26257 states and 44264 transitions. Word has length 137 [2023-12-21 08:35:37,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:35:37,882 INFO L495 AbstractCegarLoop]: Abstraction has 26257 states and 44264 transitions. [2023-12-21 08:35:37,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 4 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 08:35:37,882 INFO L276 IsEmpty]: Start isEmpty. Operand 26257 states and 44264 transitions. [2023-12-21 08:35:37,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 08:35:37,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:35:37,885 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] [2023-12-21 08:35:37,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 08:35:37,885 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:35:37,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:35:37,885 INFO L85 PathProgramCache]: Analyzing trace with hash 148107909, now seen corresponding path program 1 times [2023-12-21 08:35:37,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:35:37,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209710111] [2023-12-21 08:35:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:35:37,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:35:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:37,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:35:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:38,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:35:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:38,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:35:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:38,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:35:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:38,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:35:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:38,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:35:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:38,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:35:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:38,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:35:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:38,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:35:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:38,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:35:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:38,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:35:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:38,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 08:35:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:38,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 08:35:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:38,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 08:35:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:38,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 08:35:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:38,154 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 08:35:38,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:35:38,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209710111] [2023-12-21 08:35:38,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209710111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:35:38,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:35:38,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 08:35:38,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255050431] [2023-12-21 08:35:38,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:35:38,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:35:38,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:35:38,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:35:38,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:35:38,157 INFO L87 Difference]: Start difference. First operand 26257 states and 44264 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:35:48,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:35:48,589 INFO L93 Difference]: Finished difference Result 57783 states and 100898 transitions. [2023-12-21 08:35:48,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 08:35:48,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2023-12-21 08:35:48,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:35:48,728 INFO L225 Difference]: With dead ends: 57783 [2023-12-21 08:35:48,728 INFO L226 Difference]: Without dead ends: 31923 [2023-12-21 08:35:48,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:35:48,835 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1453 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-21 08:35:48,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1395 Invalid, 3161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-21 08:35:48,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31923 states. [2023-12-21 08:35:53,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31923 to 26385. [2023-12-21 08:35:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26385 states, 20729 states have (on average 1.6021998166819431) internal successors, (33212), 21475 states have internal predecessors, (33212), 4370 states have call successors, (4370), 978 states have call predecessors, (4370), 1285 states have return successors, (6573), 4511 states have call predecessors, (6573), 4328 states have call successors, (6573) [2023-12-21 08:35:53,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26385 states to 26385 states and 44155 transitions. [2023-12-21 08:35:53,427 INFO L78 Accepts]: Start accepts. Automaton has 26385 states and 44155 transitions. Word has length 141 [2023-12-21 08:35:53,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:35:53,428 INFO L495 AbstractCegarLoop]: Abstraction has 26385 states and 44155 transitions. [2023-12-21 08:35:53,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:35:53,428 INFO L276 IsEmpty]: Start isEmpty. Operand 26385 states and 44155 transitions. [2023-12-21 08:35:53,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 08:35:53,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:35:53,431 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] [2023-12-21 08:35:53,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 08:35:53,431 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:35:53,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:35:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1632166792, now seen corresponding path program 1 times [2023-12-21 08:35:53,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:35:53,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380572167] [2023-12-21 08:35:53,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:35:53,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:35:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:53,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:35:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:53,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:35:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:53,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:35:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:53,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:35:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:53,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:35:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:53,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:35:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:53,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:35:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:53,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:35:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:53,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:35:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:53,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:35:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:53,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 08:35:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:53,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 08:35:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 08:35:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:53,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 08:35:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:35:53,786 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 08:35:53,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:35:53,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380572167] [2023-12-21 08:35:53,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380572167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:35:53,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:35:53,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 08:35:53,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295272445] [2023-12-21 08:35:53,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:35:53,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 08:35:53,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:35:53,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 08:35:53,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:35:53,788 INFO L87 Difference]: Start difference. First operand 26385 states and 44155 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 08:36:10,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:36:10,984 INFO L93 Difference]: Finished difference Result 59167 states and 101541 transitions. [2023-12-21 08:36:10,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 08:36:10,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 138 [2023-12-21 08:36:10,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:36:11,211 INFO L225 Difference]: With dead ends: 59167 [2023-12-21 08:36:11,211 INFO L226 Difference]: Without dead ends: 36211 [2023-12-21 08:36:11,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2023-12-21 08:36:11,332 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 3859 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 8312 mSolverCounterSat, 994 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3923 SdHoareTripleChecker+Valid, 3833 SdHoareTripleChecker+Invalid, 9306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 994 IncrementalHoareTripleChecker+Valid, 8312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-21 08:36:11,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3923 Valid, 3833 Invalid, 9306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [994 Valid, 8312 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-21 08:36:11,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36211 states. [2023-12-21 08:36:16,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36211 to 30077. [2023-12-21 08:36:16,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30077 states, 23855 states have (on average 1.5936281701949278) internal successors, (38016), 24621 states have internal predecessors, (38016), 4720 states have call successors, (4720), 1154 states have call predecessors, (4720), 1501 states have return successors, (7403), 4881 states have call predecessors, (7403), 4678 states have call successors, (7403) [2023-12-21 08:36:16,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30077 states to 30077 states and 50139 transitions. [2023-12-21 08:36:16,355 INFO L78 Accepts]: Start accepts. Automaton has 30077 states and 50139 transitions. Word has length 138 [2023-12-21 08:36:16,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:36:16,356 INFO L495 AbstractCegarLoop]: Abstraction has 30077 states and 50139 transitions. [2023-12-21 08:36:16,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 08:36:16,356 INFO L276 IsEmpty]: Start isEmpty. Operand 30077 states and 50139 transitions. [2023-12-21 08:36:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 08:36:16,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:36:16,359 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] [2023-12-21 08:36:16,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 08:36:16,359 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:36:16,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:36:16,359 INFO L85 PathProgramCache]: Analyzing trace with hash 669951093, now seen corresponding path program 1 times [2023-12-21 08:36:16,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:36:16,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106102090] [2023-12-21 08:36:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:36:16,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:36:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:36:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:36:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:36:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:36:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:36:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:36:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:36:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:36:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:36:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:36:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 08:36:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:36:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 08:36:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 08:36:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 08:36:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,592 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 08:36:16,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:36:16,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106102090] [2023-12-21 08:36:16,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106102090] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:36:16,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582791871] [2023-12-21 08:36:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:36:16,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:36:16,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:36:16,600 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 08:36:16,602 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 08:36:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:16,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 08:36:16,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:36:16,925 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 08:36:16,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:36:16,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582791871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:36:16,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:36:16,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-12-21 08:36:16,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711250470] [2023-12-21 08:36:16,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:36:16,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:36:16,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:36:16,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:36:16,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:36:16,927 INFO L87 Difference]: Start difference. First operand 30077 states and 50139 transitions. Second operand has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:36:23,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:36:23,513 INFO L93 Difference]: Finished difference Result 66647 states and 111062 transitions. [2023-12-21 08:36:23,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 08:36:23,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2023-12-21 08:36:23,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:36:23,689 INFO L225 Difference]: With dead ends: 66647 [2023-12-21 08:36:23,689 INFO L226 Difference]: Without dead ends: 41273 [2023-12-21 08:36:23,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:36:23,792 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 905 mSDsluCounter, 5582 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 7199 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 08:36:23,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 7199 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 08:36:23,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41273 states. [2023-12-21 08:36:30,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41273 to 37856. [2023-12-21 08:36:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37856 states, 30137 states have (on average 1.5871520058399973) internal successors, (47832), 31065 states have internal predecessors, (47832), 5785 states have call successors, (5785), 1430 states have call predecessors, (5785), 1933 states have return successors, (9238), 6056 states have call predecessors, (9238), 5735 states have call successors, (9238) [2023-12-21 08:36:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37856 states to 37856 states and 62855 transitions. [2023-12-21 08:36:30,459 INFO L78 Accepts]: Start accepts. Automaton has 37856 states and 62855 transitions. Word has length 142 [2023-12-21 08:36:30,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:36:30,460 INFO L495 AbstractCegarLoop]: Abstraction has 37856 states and 62855 transitions. [2023-12-21 08:36:30,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:36:30,460 INFO L276 IsEmpty]: Start isEmpty. Operand 37856 states and 62855 transitions. [2023-12-21 08:36:30,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 08:36:30,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:36:30,463 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] [2023-12-21 08:36:30,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 08:36:30,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-21 08:36:30,671 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:36:30,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:36:30,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1029185314, now seen corresponding path program 1 times [2023-12-21 08:36:30,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:36:30,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758862433] [2023-12-21 08:36:30,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:36:30,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:36:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:30,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:36:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:36:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:30,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:36:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:30,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:36:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:30,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:36:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:30,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:36:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:36:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:30,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:36:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:31,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-21 08:36:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:31,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:36:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:31,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 08:36:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:31,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:36:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:31,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 08:36:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:31,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 08:36:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:31,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 08:36:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 08:36:31,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:36:31,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758862433] [2023-12-21 08:36:31,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758862433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:36:31,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:36:31,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 08:36:31,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299011786] [2023-12-21 08:36:31,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:36:31,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 08:36:31,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:36:31,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 08:36:31,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:36:31,088 INFO L87 Difference]: Start difference. First operand 37856 states and 62855 transitions. Second operand has 11 states, 10 states have (on average 9.2) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-21 08:36:46,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:36:46,411 INFO L93 Difference]: Finished difference Result 90009 states and 152546 transitions. [2023-12-21 08:36:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 08:36:46,412 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.2) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 141 [2023-12-21 08:36:46,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:36:46,786 INFO L225 Difference]: With dead ends: 90009 [2023-12-21 08:36:46,786 INFO L226 Difference]: Without dead ends: 48290 [2023-12-21 08:36:47,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:36:47,137 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 2182 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 5420 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2237 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 5420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-21 08:36:47,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2237 Valid, 2695 Invalid, 5853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [433 Valid, 5420 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-21 08:36:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48290 states. [2023-12-21 08:36:53,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48290 to 40960. [2023-12-21 08:36:53,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40960 states, 33121 states have (on average 1.5783339875003775) internal successors, (52276), 33969 states have internal predecessors, (52276), 5873 states have call successors, (5873), 1542 states have call predecessors, (5873), 1965 states have return successors, (8896), 6144 states have call predecessors, (8896), 5823 states have call successors, (8896) [2023-12-21 08:36:53,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40960 states to 40960 states and 67045 transitions. [2023-12-21 08:36:53,518 INFO L78 Accepts]: Start accepts. Automaton has 40960 states and 67045 transitions. Word has length 141 [2023-12-21 08:36:53,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:36:53,518 INFO L495 AbstractCegarLoop]: Abstraction has 40960 states and 67045 transitions. [2023-12-21 08:36:53,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.2) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-21 08:36:53,518 INFO L276 IsEmpty]: Start isEmpty. Operand 40960 states and 67045 transitions. [2023-12-21 08:36:53,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 08:36:53,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:36:53,687 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] [2023-12-21 08:36:53,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 08:36:53,688 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:36:53,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:36:53,688 INFO L85 PathProgramCache]: Analyzing trace with hash 243110833, now seen corresponding path program 1 times [2023-12-21 08:36:53,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:36:53,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579521758] [2023-12-21 08:36:53,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:36:53,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:36:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:36:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:36:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:36:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:36:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:36:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:36:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:36:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:36:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:36:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:36:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 08:36:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:36:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 08:36:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 08:36:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 08:36:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:53,912 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 08:36:53,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:36:53,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579521758] [2023-12-21 08:36:53,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579521758] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:36:53,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799135020] [2023-12-21 08:36:53,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:36:53,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:36:53,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:36:53,917 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 08:36:53,924 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 08:36:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:36:54,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 08:36:54,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:36:54,188 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 08:36:54,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:36:54,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799135020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:36:54,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:36:54,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-21 08:36:54,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243768103] [2023-12-21 08:36:54,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:36:54,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:36:54,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:36:54,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:36:54,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:36:54,189 INFO L87 Difference]: Start difference. First operand 40960 states and 67045 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:37:00,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:37:00,730 INFO L93 Difference]: Finished difference Result 82127 states and 135851 transitions. [2023-12-21 08:37:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:37:00,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2023-12-21 08:37:00,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:37:00,896 INFO L225 Difference]: With dead ends: 82127 [2023-12-21 08:37:00,896 INFO L226 Difference]: Without dead ends: 41248 [2023-12-21 08:37:01,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 08:37:01,054 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 85 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2721 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 08:37:01,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2721 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:37:01,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41248 states. [2023-12-21 08:37:07,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41248 to 41248. [2023-12-21 08:37:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41248 states, 33361 states have (on average 1.5756122418392735) internal successors, (52564), 34209 states have internal predecessors, (52564), 5873 states have call successors, (5873), 1590 states have call predecessors, (5873), 2013 states have return successors, (8896), 6144 states have call predecessors, (8896), 5823 states have call successors, (8896) [2023-12-21 08:37:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41248 states to 41248 states and 67333 transitions. [2023-12-21 08:37:07,601 INFO L78 Accepts]: Start accepts. Automaton has 41248 states and 67333 transitions. Word has length 142 [2023-12-21 08:37:07,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:37:07,602 INFO L495 AbstractCegarLoop]: Abstraction has 41248 states and 67333 transitions. [2023-12-21 08:37:07,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:37:07,602 INFO L276 IsEmpty]: Start isEmpty. Operand 41248 states and 67333 transitions. [2023-12-21 08:37:07,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 08:37:07,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:37:07,605 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] [2023-12-21 08:37:07,612 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 08:37:07,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-21 08:37:07,806 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:37:07,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:37:07,807 INFO L85 PathProgramCache]: Analyzing trace with hash 654185896, now seen corresponding path program 1 times [2023-12-21 08:37:07,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:37:07,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218375696] [2023-12-21 08:37:07,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:37:07,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:37:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:07,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:37:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:37:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:37:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:37:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:37:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:37:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:37:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:37:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:37:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:37:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 08:37:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:37:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 08:37:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-21 08:37:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 08:37:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,197 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 08:37:08,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:37:08,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218375696] [2023-12-21 08:37:08,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218375696] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:37:08,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951944226] [2023-12-21 08:37:08,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:37:08,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:37:08,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:37:08,199 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 08:37:08,202 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 08:37:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:08,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 08:37:08,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:37:08,548 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 08:37:08,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:37:08,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951944226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:37:08,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:37:08,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-21 08:37:08,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500332171] [2023-12-21 08:37:08,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:37:08,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:37:08,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:37:08,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:37:08,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:37:08,549 INFO L87 Difference]: Start difference. First operand 41248 states and 67333 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-12-21 08:37:22,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:37:22,901 INFO L93 Difference]: Finished difference Result 100524 states and 168688 transitions. [2023-12-21 08:37:22,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 08:37:22,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 144 [2023-12-21 08:37:22,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:37:23,206 INFO L225 Difference]: With dead ends: 100524 [2023-12-21 08:37:23,206 INFO L226 Difference]: Without dead ends: 64043 [2023-12-21 08:37:23,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:37:23,543 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 3175 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 5184 mSolverCounterSat, 741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3288 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 5925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 5184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-21 08:37:23,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3288 Valid, 1480 Invalid, 5925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [741 Valid, 5184 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-21 08:37:23,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64043 states. [2023-12-21 08:37:33,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64043 to 62131. [2023-12-21 08:37:33,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62131 states, 49691 states have (on average 1.5533195146002294) internal successors, (77186), 50987 states have internal predecessors, (77186), 9018 states have call successors, (9018), 2730 states have call predecessors, (9018), 3421 states have return successors, (15485), 9457 states have call predecessors, (15485), 8944 states have call successors, (15485) [2023-12-21 08:37:33,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62131 states to 62131 states and 101689 transitions. [2023-12-21 08:37:33,640 INFO L78 Accepts]: Start accepts. Automaton has 62131 states and 101689 transitions. Word has length 144 [2023-12-21 08:37:33,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:37:33,641 INFO L495 AbstractCegarLoop]: Abstraction has 62131 states and 101689 transitions. [2023-12-21 08:37:33,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-12-21 08:37:33,641 INFO L276 IsEmpty]: Start isEmpty. Operand 62131 states and 101689 transitions. [2023-12-21 08:37:33,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 08:37:33,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:37:33,644 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] [2023-12-21 08:37:33,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-21 08:37:33,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:37:33,845 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:37:33,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:37:33,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1009493851, now seen corresponding path program 1 times [2023-12-21 08:37:33,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:37:33,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967469794] [2023-12-21 08:37:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:37:33,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:37:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:33,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:37:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:37:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:37:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:37:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:37:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:37:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:37:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:37:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:37:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:37:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 08:37:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:37:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 08:37:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-21 08:37:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 08:37:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,195 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 08:37:34,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:37:34,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967469794] [2023-12-21 08:37:34,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967469794] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:37:34,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329621692] [2023-12-21 08:37:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:37:34,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:37:34,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:37:34,197 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 08:37:34,199 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 08:37:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:37:34,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 08:37:34,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:37:34,617 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 08:37:34,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:37:34,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329621692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:37:34,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:37:34,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-21 08:37:34,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032558093] [2023-12-21 08:37:34,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:37:34,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:37:34,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:37:34,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:37:34,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:37:34,619 INFO L87 Difference]: Start difference. First operand 62131 states and 101689 transitions. Second operand has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 08:37:47,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:37:47,514 INFO L93 Difference]: Finished difference Result 132243 states and 219394 transitions. [2023-12-21 08:37:47,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:37:47,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 145 [2023-12-21 08:37:47,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:37:48,110 INFO L225 Difference]: With dead ends: 132243 [2023-12-21 08:37:48,111 INFO L226 Difference]: Without dead ends: 70097 [2023-12-21 08:37:48,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-12-21 08:37:48,435 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1596 mSDsluCounter, 4929 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 6447 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 08:37:48,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 6447 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 08:37:48,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70097 states. [2023-12-21 08:37:59,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70097 to 69920. [2023-12-21 08:37:59,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69920 states, 56196 states have (on average 1.5424051533917005) internal successors, (86677), 57565 states have internal predecessors, (86677), 9560 states have call successors, (9560), 3421 states have call predecessors, (9560), 4163 states have return successors, (19874), 9977 states have call predecessors, (19874), 9428 states have call successors, (19874) [2023-12-21 08:38:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69920 states to 69920 states and 116111 transitions. [2023-12-21 08:38:00,126 INFO L78 Accepts]: Start accepts. Automaton has 69920 states and 116111 transitions. Word has length 145 [2023-12-21 08:38:00,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:38:00,127 INFO L495 AbstractCegarLoop]: Abstraction has 69920 states and 116111 transitions. [2023-12-21 08:38:00,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 08:38:00,127 INFO L276 IsEmpty]: Start isEmpty. Operand 69920 states and 116111 transitions. [2023-12-21 08:38:00,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 08:38:00,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:38:00,133 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] [2023-12-21 08:38:00,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-21 08:38:00,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-21 08:38:00,340 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:38:00,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:38:00,340 INFO L85 PathProgramCache]: Analyzing trace with hash -916796376, now seen corresponding path program 1 times [2023-12-21 08:38:00,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:38:00,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866522312] [2023-12-21 08:38:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:38:00,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:38:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:38:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:38:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:38:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:38:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:38:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:38:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:38:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:38:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 08:38:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 08:38:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 08:38:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 08:38:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 08:38:00,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:38:00,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866522312] [2023-12-21 08:38:00,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866522312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:38:00,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:38:00,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 08:38:00,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285788343] [2023-12-21 08:38:00,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:38:00,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:38:00,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:38:00,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:38:00,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:38:00,564 INFO L87 Difference]: Start difference. First operand 69920 states and 116111 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:38:25,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:38:25,296 INFO L93 Difference]: Finished difference Result 153131 states and 278188 transitions. [2023-12-21 08:38:25,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 08:38:25,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 149 [2023-12-21 08:38:25,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:38:25,855 INFO L225 Difference]: With dead ends: 153131 [2023-12-21 08:38:25,855 INFO L226 Difference]: Without dead ends: 82752 [2023-12-21 08:38:26,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:38:26,592 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1532 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-21 08:38:26,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 1417 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-21 08:38:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82752 states. [2023-12-21 08:38:38,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82752 to 69784. [2023-12-21 08:38:38,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69784 states, 56060 states have (on average 1.5364430966821263) internal successors, (86133), 57429 states have internal predecessors, (86133), 9560 states have call successors, (9560), 3421 states have call predecessors, (9560), 4163 states have return successors, (19874), 9977 states have call predecessors, (19874), 9428 states have call successors, (19874) [2023-12-21 08:38:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69784 states to 69784 states and 115567 transitions. [2023-12-21 08:38:39,222 INFO L78 Accepts]: Start accepts. Automaton has 69784 states and 115567 transitions. Word has length 149 [2023-12-21 08:38:39,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:38:39,222 INFO L495 AbstractCegarLoop]: Abstraction has 69784 states and 115567 transitions. [2023-12-21 08:38:39,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:38:39,223 INFO L276 IsEmpty]: Start isEmpty. Operand 69784 states and 115567 transitions. [2023-12-21 08:38:39,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 08:38:39,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:38:39,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:38:39,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-21 08:38:39,227 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:38:39,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:38:39,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1967068738, now seen corresponding path program 1 times [2023-12-21 08:38:39,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:38:39,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209195231] [2023-12-21 08:38:39,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:38:39,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:38:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:38:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:38:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:38:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:38:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:38:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:38:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 08:38:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:38:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 08:38:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:38:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 08:38:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 08:38:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 08:38:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:38:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 08:38:39,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:38:39,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209195231] [2023-12-21 08:38:39,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209195231] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:38:39,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598856238] [2023-12-21 08:38:39,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:38:39,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:38:39,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:38:39,828 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 08:38:39,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process