/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:32:47,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:32:47,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:32:47,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:32:47,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 02:32:47,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 02:32:47,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 02:32:47,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 02:32:47,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 02:32:47,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 02:32:47,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 02:32:47,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 02:32:47,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 02:32:47,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 02:32:47,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 02:32:47,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 02:32:47,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 02:32:47,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:32:47,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:32:47,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:32:47,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 02:32:47,655 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:32:47,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:32:47,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:32:47,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:32:47,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:32:47,656 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:32:47,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:32:47,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:32:47,657 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:32:47,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:32:47,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:32:47,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:32:47,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:32:47,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:32:47,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:32:47,657 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:32:47,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:32:47,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:32:47,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:32:47,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:32:47,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:32:47,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:32:47,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:32:47,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:32:47,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:32:47,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:32:47,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:32:47,659 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:32:47,659 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:32:47,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:32:47,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:32:47,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:32:47,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:32:47,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:32:47,853 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:32:47,854 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:32:47,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c [2022-01-10 02:32:47,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57cb6399b/97c6b5834d094198a1f8ae83c41f8e30/FLAG0a2896068 [2022-01-10 02:32:48,305 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:32:48,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c [2022-01-10 02:32:48,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57cb6399b/97c6b5834d094198a1f8ae83c41f8e30/FLAG0a2896068 [2022-01-10 02:32:48,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57cb6399b/97c6b5834d094198a1f8ae83c41f8e30 [2022-01-10 02:32:48,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:32:48,325 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:32:48,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:32:48,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:32:48,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:32:48,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:32:48" (1/1) ... [2022-01-10 02:32:48,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557e4d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:48, skipping insertion in model container [2022-01-10 02:32:48,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:32:48" (1/1) ... [2022-01-10 02:32:48,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:32:48,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:32:48,508 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c[913,926] [2022-01-10 02:32:48,532 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c[5977,5990] [2022-01-10 02:32:48,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:32:48,605 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:32:48,618 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c[913,926] [2022-01-10 02:32:48,626 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c[5977,5990] [2022-01-10 02:32:48,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:32:48,704 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:32:48,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:48 WrapperNode [2022-01-10 02:32:48,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:32:48,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:32:48,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:32:48,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:32:48,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:48" (1/1) ... [2022-01-10 02:32:48,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:48" (1/1) ... [2022-01-10 02:32:48,777 INFO L137 Inliner]: procedures = 72, calls = 85, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1060 [2022-01-10 02:32:48,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:32:48,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:32:48,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:32:48,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:32:48,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:48" (1/1) ... [2022-01-10 02:32:48,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:48" (1/1) ... [2022-01-10 02:32:48,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:48" (1/1) ... [2022-01-10 02:32:48,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:48" (1/1) ... [2022-01-10 02:32:48,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:48" (1/1) ... [2022-01-10 02:32:48,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:48" (1/1) ... [2022-01-10 02:32:48,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:48" (1/1) ... [2022-01-10 02:32:48,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:32:48,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:32:48,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:32:48,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:32:48,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:48" (1/1) ... [2022-01-10 02:32:48,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:32:48,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:32:48,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 02:32:48,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 02:32:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:32:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 02:32:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 02:32:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-01-10 02:32:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-01-10 02:32:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 02:32:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 02:32:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 02:32:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 02:32:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 02:32:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 02:32:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 02:32:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 02:32:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 02:32:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 02:32:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:32:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 02:32:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 02:32:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:32:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:32:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 02:32:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 02:32:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-01-10 02:32:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-01-10 02:32:49,000 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:32:49,002 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:32:49,569 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:32:49,580 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:32:49,581 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2022-01-10 02:32:49,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:32:49 BoogieIcfgContainer [2022-01-10 02:32:49,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:32:49,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:32:49,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:32:49,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:32:49,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:32:48" (1/3) ... [2022-01-10 02:32:49,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197c2123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:32:49, skipping insertion in model container [2022-01-10 02:32:49,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:48" (2/3) ... [2022-01-10 02:32:49,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197c2123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:32:49, skipping insertion in model container [2022-01-10 02:32:49,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:32:49" (3/3) ... [2022-01-10 02:32:49,591 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.12.cil-1.c [2022-01-10 02:32:49,594 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:32:49,594 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:32:49,638 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:32:49,644 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 02:32:49,644 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:32:49,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 462 states, 415 states have (on average 1.653012048192771) internal successors, (686), 422 states have internal predecessors, (686), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-10 02:32:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 02:32:49,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:49,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:32:49,684 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:49,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:49,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1035123780, now seen corresponding path program 1 times [2022-01-10 02:32:49,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:49,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044897105] [2022-01-10 02:32:49,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:49,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:49,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 02:32:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:32:49,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:49,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044897105] [2022-01-10 02:32:49,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044897105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:49,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:49,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:32:49,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72538780] [2022-01-10 02:32:49,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:49,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:32:49,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:49,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:32:49,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:32:49,952 INFO L87 Difference]: Start difference. First operand has 462 states, 415 states have (on average 1.653012048192771) internal successors, (686), 422 states have internal predecessors, (686), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 02:32:50,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:50,263 INFO L93 Difference]: Finished difference Result 968 states and 1576 transitions. [2022-01-10 02:32:50,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:32:50,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-01-10 02:32:50,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:50,285 INFO L225 Difference]: With dead ends: 968 [2022-01-10 02:32:50,285 INFO L226 Difference]: Without dead ends: 521 [2022-01-10 02:32:50,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:32:50,294 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 957 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:50,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 1141 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:32:50,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-01-10 02:32:50,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 515. [2022-01-10 02:32:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 464 states have (on average 1.5366379310344827) internal successors, (713), 469 states have internal predecessors, (713), 38 states have call successors, (38), 12 states have call predecessors, (38), 11 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-01-10 02:32:50,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 791 transitions. [2022-01-10 02:32:50,354 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 791 transitions. Word has length 44 [2022-01-10 02:32:50,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:50,359 INFO L470 AbstractCegarLoop]: Abstraction has 515 states and 791 transitions. [2022-01-10 02:32:50,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 02:32:50,359 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 791 transitions. [2022-01-10 02:32:50,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 02:32:50,366 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:50,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:32:50,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:32:50,366 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:50,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:50,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1381906941, now seen corresponding path program 1 times [2022-01-10 02:32:50,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:50,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195918808] [2022-01-10 02:32:50,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:50,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:50,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:50,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-10 02:32:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:32:50,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:50,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195918808] [2022-01-10 02:32:50,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195918808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:50,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:50,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:32:50,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593251424] [2022-01-10 02:32:50,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:50,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:32:50,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:50,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:32:50,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:32:50,439 INFO L87 Difference]: Start difference. First operand 515 states and 791 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 02:32:50,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:50,812 INFO L93 Difference]: Finished difference Result 763 states and 1131 transitions. [2022-01-10 02:32:50,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:32:50,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-01-10 02:32:50,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:50,824 INFO L225 Difference]: With dead ends: 763 [2022-01-10 02:32:50,824 INFO L226 Difference]: Without dead ends: 639 [2022-01-10 02:32:50,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:32:50,830 INFO L933 BasicCegarLoop]: 746 mSDtfsCounter, 369 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:50,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 1480 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:32:50,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-01-10 02:32:50,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 582. [2022-01-10 02:32:50,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 525 states have (on average 1.5180952380952382) internal successors, (797), 530 states have internal predecessors, (797), 41 states have call successors, (41), 15 states have call predecessors, (41), 14 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2022-01-10 02:32:50,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 881 transitions. [2022-01-10 02:32:50,869 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 881 transitions. Word has length 45 [2022-01-10 02:32:50,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:50,869 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 881 transitions. [2022-01-10 02:32:50,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 02:32:50,869 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 881 transitions. [2022-01-10 02:32:50,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 02:32:50,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:50,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:32:50,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:32:50,870 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:50,871 INFO L85 PathProgramCache]: Analyzing trace with hash 97549480, now seen corresponding path program 1 times [2022-01-10 02:32:50,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:50,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113824593] [2022-01-10 02:32:50,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:50,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:50,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:50,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-10 02:32:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:32:50,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:50,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113824593] [2022-01-10 02:32:50,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113824593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:50,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:50,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:32:50,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009130791] [2022-01-10 02:32:50,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:50,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:32:50,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:50,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:32:50,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:32:50,912 INFO L87 Difference]: Start difference. First operand 582 states and 881 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 02:32:51,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:51,045 INFO L93 Difference]: Finished difference Result 990 states and 1440 transitions. [2022-01-10 02:32:51,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:32:51,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-01-10 02:32:51,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:51,050 INFO L225 Difference]: With dead ends: 990 [2022-01-10 02:32:51,050 INFO L226 Difference]: Without dead ends: 799 [2022-01-10 02:32:51,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:32:51,052 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 966 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:51,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 1143 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:32:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-01-10 02:32:51,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 747. [2022-01-10 02:32:51,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 671 states have (on average 1.4709388971684054) internal successors, (987), 679 states have internal predecessors, (987), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (60), 46 states have call predecessors, (60), 48 states have call successors, (60) [2022-01-10 02:32:51,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1099 transitions. [2022-01-10 02:32:51,073 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1099 transitions. Word has length 45 [2022-01-10 02:32:51,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:51,074 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 1099 transitions. [2022-01-10 02:32:51,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 02:32:51,074 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1099 transitions. [2022-01-10 02:32:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 02:32:51,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:51,076 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:32:51,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:32:51,076 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:51,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:51,076 INFO L85 PathProgramCache]: Analyzing trace with hash -438152140, now seen corresponding path program 1 times [2022-01-10 02:32:51,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:51,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003288689] [2022-01-10 02:32:51,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:51,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:51,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:51,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-10 02:32:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:32:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 02:32:51,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:51,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003288689] [2022-01-10 02:32:51,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003288689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:51,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:51,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:32:51,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248359103] [2022-01-10 02:32:51,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:51,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:32:51,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:51,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:32:51,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:32:51,121 INFO L87 Difference]: Start difference. First operand 747 states and 1099 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 02:32:51,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:51,470 INFO L93 Difference]: Finished difference Result 1331 states and 1884 transitions. [2022-01-10 02:32:51,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:32:51,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-01-10 02:32:51,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:51,474 INFO L225 Difference]: With dead ends: 1331 [2022-01-10 02:32:51,474 INFO L226 Difference]: Without dead ends: 975 [2022-01-10 02:32:51,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:32:51,476 INFO L933 BasicCegarLoop]: 770 mSDtfsCounter, 353 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:51,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 1535 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:32:51,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-01-10 02:32:51,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 937. [2022-01-10 02:32:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 837 states have (on average 1.4181600955794504) internal successors, (1187), 847 states have internal predecessors, (1187), 66 states have call successors, (66), 30 states have call predecessors, (66), 32 states have return successors, (84), 60 states have call predecessors, (84), 62 states have call successors, (84) [2022-01-10 02:32:51,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1337 transitions. [2022-01-10 02:32:51,501 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1337 transitions. Word has length 62 [2022-01-10 02:32:51,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:51,502 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1337 transitions. [2022-01-10 02:32:51,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 02:32:51,502 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1337 transitions. [2022-01-10 02:32:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 02:32:51,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:51,504 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:32:51,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:32:51,504 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:51,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:51,504 INFO L85 PathProgramCache]: Analyzing trace with hash -865322860, now seen corresponding path program 1 times [2022-01-10 02:32:51,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:51,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055947803] [2022-01-10 02:32:51,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:51,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:51,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:51,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-10 02:32:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:51,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:32:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 02:32:51,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:51,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055947803] [2022-01-10 02:32:51,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055947803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:51,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:51,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:32:51,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947045637] [2022-01-10 02:32:51,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:51,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:32:51,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:51,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:32:51,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:32:51,553 INFO L87 Difference]: Start difference. First operand 937 states and 1337 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 02:32:51,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:51,682 INFO L93 Difference]: Finished difference Result 1590 states and 2190 transitions. [2022-01-10 02:32:51,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:32:51,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-01-10 02:32:51,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:51,688 INFO L225 Difference]: With dead ends: 1590 [2022-01-10 02:32:51,688 INFO L226 Difference]: Without dead ends: 1136 [2022-01-10 02:32:51,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:32:51,691 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 953 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:51,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 1140 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:32:51,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2022-01-10 02:32:51,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1081. [2022-01-10 02:32:51,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 965 states have (on average 1.3865284974093264) internal successors, (1338), 977 states have internal predecessors, (1338), 74 states have call successors, (74), 36 states have call predecessors, (74), 40 states have return successors, (98), 68 states have call predecessors, (98), 70 states have call successors, (98) [2022-01-10 02:32:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1510 transitions. [2022-01-10 02:32:51,726 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1510 transitions. Word has length 67 [2022-01-10 02:32:51,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:51,726 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 1510 transitions. [2022-01-10 02:32:51,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 02:32:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1510 transitions. [2022-01-10 02:32:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 02:32:51,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:51,729 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:32:51,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:32:51,729 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:51,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:51,729 INFO L85 PathProgramCache]: Analyzing trace with hash 679042809, now seen corresponding path program 1 times [2022-01-10 02:32:51,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:51,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454674575] [2022-01-10 02:32:51,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:51,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:51,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:51,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 02:32:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:32:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:32:51,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:51,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454674575] [2022-01-10 02:32:51,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454674575] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:32:51,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138499230] [2022-01-10 02:32:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:51,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:32:51,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:32:51,832 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) [2022-01-10 02:32:51,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 02:32:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:51,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 02:32:51,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:32:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:32:52,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:32:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 02:32:52,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138499230] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 02:32:52,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:32:52,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-01-10 02:32:52,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792663252] [2022-01-10 02:32:52,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:52,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:32:52,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:52,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:32:52,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:32:52,176 INFO L87 Difference]: Start difference. First operand 1081 states and 1510 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 02:32:52,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:52,303 INFO L93 Difference]: Finished difference Result 1137 states and 1578 transitions. [2022-01-10 02:32:52,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 02:32:52,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-01-10 02:32:52,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:52,308 INFO L225 Difference]: With dead ends: 1137 [2022-01-10 02:32:52,308 INFO L226 Difference]: Without dead ends: 1134 [2022-01-10 02:32:52,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:32:52,314 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 1279 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:52,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1279 Valid, 792 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:32:52,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2022-01-10 02:32:52,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1080. [2022-01-10 02:32:52,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 965 states have (on average 1.3844559585492229) internal successors, (1336), 976 states have internal predecessors, (1336), 73 states have call successors, (73), 36 states have call predecessors, (73), 40 states have return successors, (98), 68 states have call predecessors, (98), 70 states have call successors, (98) [2022-01-10 02:32:52,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1507 transitions. [2022-01-10 02:32:52,354 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1507 transitions. Word has length 68 [2022-01-10 02:32:52,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:52,355 INFO L470 AbstractCegarLoop]: Abstraction has 1080 states and 1507 transitions. [2022-01-10 02:32:52,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 02:32:52,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1507 transitions. [2022-01-10 02:32:52,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 02:32:52,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:52,357 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:32:52,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 02:32:52,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-10 02:32:52,574 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:52,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:52,574 INFO L85 PathProgramCache]: Analyzing trace with hash -425930313, now seen corresponding path program 1 times [2022-01-10 02:32:52,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:52,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042405467] [2022-01-10 02:32:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:52,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:52,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:52,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 02:32:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:52,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:32:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:32:52,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:52,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042405467] [2022-01-10 02:32:52,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042405467] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:32:52,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976695688] [2022-01-10 02:32:52,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:52,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:32:52,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:32:52,655 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) [2022-01-10 02:32:52,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 02:32:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:52,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 02:32:52,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:32:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:32:53,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:32:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 02:32:53,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976695688] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:32:53,147 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:32:53,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-01-10 02:32:53,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915295968] [2022-01-10 02:32:53,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:32:53,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 02:32:53,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:53,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 02:32:53,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:32:53,149 INFO L87 Difference]: Start difference. First operand 1080 states and 1507 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-01-10 02:32:54,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:54,464 INFO L93 Difference]: Finished difference Result 2780 states and 3727 transitions. [2022-01-10 02:32:54,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-10 02:32:54,465 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-01-10 02:32:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:54,472 INFO L225 Difference]: With dead ends: 2780 [2022-01-10 02:32:54,472 INFO L226 Difference]: Without dead ends: 2236 [2022-01-10 02:32:54,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-01-10 02:32:54,474 INFO L933 BasicCegarLoop]: 830 mSDtfsCounter, 1278 mSDsluCounter, 3520 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 4350 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:54,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1311 Valid, 4350 Invalid, 2413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:32:54,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2022-01-10 02:32:54,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1469. [2022-01-10 02:32:54,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1315 states have (on average 1.3460076045627376) internal successors, (1770), 1334 states have internal predecessors, (1770), 93 states have call successors, (93), 50 states have call predecessors, (93), 59 states have return successors, (132), 85 states have call predecessors, (132), 90 states have call successors, (132) [2022-01-10 02:32:54,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1995 transitions. [2022-01-10 02:32:54,526 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1995 transitions. Word has length 69 [2022-01-10 02:32:54,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:54,526 INFO L470 AbstractCegarLoop]: Abstraction has 1469 states and 1995 transitions. [2022-01-10 02:32:54,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-01-10 02:32:54,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1995 transitions. [2022-01-10 02:32:54,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 02:32:54,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:54,528 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 02:32:54,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 02:32:54,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-10 02:32:54,743 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:54,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:54,744 INFO L85 PathProgramCache]: Analyzing trace with hash -711580662, now seen corresponding path program 1 times [2022-01-10 02:32:54,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:54,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918099516] [2022-01-10 02:32:54,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:54,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:54,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:54,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 02:32:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:54,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:32:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:54,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 02:32:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 02:32:54,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:54,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918099516] [2022-01-10 02:32:54,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918099516] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:32:54,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652139380] [2022-01-10 02:32:54,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:54,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:32:54,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:32:54,816 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) [2022-01-10 02:32:54,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 02:32:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:54,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 02:32:54,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:32:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 02:32:55,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:32:55,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652139380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:55,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:32:55,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-01-10 02:32:55,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021619764] [2022-01-10 02:32:55,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:55,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:32:55,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:55,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:32:55,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:55,016 INFO L87 Difference]: Start difference. First operand 1469 states and 1995 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 02:32:55,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:55,062 INFO L93 Difference]: Finished difference Result 2192 states and 2933 transitions. [2022-01-10 02:32:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:32:55,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-01-10 02:32:55,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:55,067 INFO L225 Difference]: With dead ends: 2192 [2022-01-10 02:32:55,067 INFO L226 Difference]: Without dead ends: 1347 [2022-01-10 02:32:55,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:55,069 INFO L933 BasicCegarLoop]: 731 mSDtfsCounter, 660 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:55,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 806 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:32:55,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2022-01-10 02:32:55,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1332. [2022-01-10 02:32:55,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1194 states have (on average 1.3500837520938023) internal successors, (1612), 1212 states have internal predecessors, (1612), 85 states have call successors, (85), 44 states have call predecessors, (85), 51 states have return successors, (118), 76 states have call predecessors, (118), 82 states have call successors, (118) [2022-01-10 02:32:55,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1815 transitions. [2022-01-10 02:32:55,115 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1815 transitions. Word has length 88 [2022-01-10 02:32:55,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:55,115 INFO L470 AbstractCegarLoop]: Abstraction has 1332 states and 1815 transitions. [2022-01-10 02:32:55,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 02:32:55,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1815 transitions. [2022-01-10 02:32:55,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 02:32:55,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:55,117 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:32:55,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 02:32:55,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:32:55,335 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:55,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:55,335 INFO L85 PathProgramCache]: Analyzing trace with hash -237141579, now seen corresponding path program 1 times [2022-01-10 02:32:55,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:55,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167116527] [2022-01-10 02:32:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:55,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:55,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 02:32:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:55,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:32:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 02:32:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 02:32:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:55,399 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-10 02:32:55,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:55,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167116527] [2022-01-10 02:32:55,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167116527] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:32:55,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108164906] [2022-01-10 02:32:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:55,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:32:55,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:32:55,400 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) [2022-01-10 02:32:55,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 02:32:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:55,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:32:55,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:32:55,628 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 02:32:55,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:32:55,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108164906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:55,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:32:55,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-01-10 02:32:55,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507108212] [2022-01-10 02:32:55,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:55,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:32:55,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:55,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:32:55,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:55,630 INFO L87 Difference]: Start difference. First operand 1332 states and 1815 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-10 02:32:55,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:55,660 INFO L93 Difference]: Finished difference Result 1711 states and 2283 transitions. [2022-01-10 02:32:55,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:32:55,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-01-10 02:32:55,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:55,662 INFO L225 Difference]: With dead ends: 1711 [2022-01-10 02:32:55,662 INFO L226 Difference]: Without dead ends: 385 [2022-01-10 02:32:55,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:55,664 INFO L933 BasicCegarLoop]: 745 mSDtfsCounter, 62 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:55,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 1420 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:32:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-01-10 02:32:55,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2022-01-10 02:32:55,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 350 states have (on average 1.582857142857143) internal successors, (554), 352 states have internal predecessors, (554), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 02:32:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 608 transitions. [2022-01-10 02:32:55,673 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 608 transitions. Word has length 103 [2022-01-10 02:32:55,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:55,673 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 608 transitions. [2022-01-10 02:32:55,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-10 02:32:55,673 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 608 transitions. [2022-01-10 02:32:55,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:32:55,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:55,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:32:55,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 02:32:55,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:32:55,892 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:55,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:55,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1921252372, now seen corresponding path program 1 times [2022-01-10 02:32:55,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:55,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711710294] [2022-01-10 02:32:55,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:55,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:55,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:55,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:32:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:55,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:32:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:55,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:32:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:55,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:32:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:32:55,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:55,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711710294] [2022-01-10 02:32:55,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711710294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:55,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:55,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:32:55,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446656536] [2022-01-10 02:32:55,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:55,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:32:55,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:55,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:32:55,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:32:55,999 INFO L87 Difference]: Start difference. First operand 385 states and 608 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:32:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:57,080 INFO L93 Difference]: Finished difference Result 905 states and 1452 transitions. [2022-01-10 02:32:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:32:57,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 02:32:57,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:57,082 INFO L225 Difference]: With dead ends: 905 [2022-01-10 02:32:57,083 INFO L226 Difference]: Without dead ends: 527 [2022-01-10 02:32:57,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:32:57,084 INFO L933 BasicCegarLoop]: 669 mSDtfsCounter, 1044 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:57,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 1079 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:32:57,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-01-10 02:32:57,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 385. [2022-01-10 02:32:57,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 350 states have (on average 1.58) internal successors, (553), 352 states have internal predecessors, (553), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 02:32:57,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 607 transitions. [2022-01-10 02:32:57,103 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 607 transitions. Word has length 179 [2022-01-10 02:32:57,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:57,103 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 607 transitions. [2022-01-10 02:32:57,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:32:57,103 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 607 transitions. [2022-01-10 02:32:57,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:32:57,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:57,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:32:57,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:32:57,105 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:57,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1272659602, now seen corresponding path program 1 times [2022-01-10 02:32:57,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:57,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939904245] [2022-01-10 02:32:57,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:57,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:57,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:57,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:32:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:57,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:32:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:57,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:32:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:57,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:32:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:32:57,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:57,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939904245] [2022-01-10 02:32:57,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939904245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:57,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:57,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:32:57,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306923218] [2022-01-10 02:32:57,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:57,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:32:57,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:57,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:32:57,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:32:57,216 INFO L87 Difference]: Start difference. First operand 385 states and 607 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:32:58,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:58,285 INFO L93 Difference]: Finished difference Result 897 states and 1435 transitions. [2022-01-10 02:32:58,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:32:58,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 02:32:58,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:58,289 INFO L225 Difference]: With dead ends: 897 [2022-01-10 02:32:58,289 INFO L226 Difference]: Without dead ends: 527 [2022-01-10 02:32:58,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:32:58,290 INFO L933 BasicCegarLoop]: 668 mSDtfsCounter, 1035 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:58,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 1077 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:32:58,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-01-10 02:32:58,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 385. [2022-01-10 02:32:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 350 states have (on average 1.5771428571428572) internal successors, (552), 352 states have internal predecessors, (552), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 02:32:58,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 606 transitions. [2022-01-10 02:32:58,307 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 606 transitions. Word has length 179 [2022-01-10 02:32:58,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:58,308 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 606 transitions. [2022-01-10 02:32:58,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:32:58,308 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 606 transitions. [2022-01-10 02:32:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:32:58,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:58,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:32:58,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 02:32:58,309 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:58,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:58,310 INFO L85 PathProgramCache]: Analyzing trace with hash 774102800, now seen corresponding path program 1 times [2022-01-10 02:32:58,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:58,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919010029] [2022-01-10 02:32:58,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:58,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:58,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:32:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:58,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:32:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:58,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:32:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:58,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:32:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:32:58,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:58,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919010029] [2022-01-10 02:32:58,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919010029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:58,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:58,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:32:58,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703675506] [2022-01-10 02:32:58,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:58,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:32:58,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:58,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:32:58,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:32:58,429 INFO L87 Difference]: Start difference. First operand 385 states and 606 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:00,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:00,678 INFO L93 Difference]: Finished difference Result 1415 states and 2277 transitions. [2022-01-10 02:33:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:33:00,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 02:33:00,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:00,689 INFO L225 Difference]: With dead ends: 1415 [2022-01-10 02:33:00,689 INFO L226 Difference]: Without dead ends: 1051 [2022-01-10 02:33:00,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:33:00,690 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 1568 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:00,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 1703 Invalid, 2142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 02:33:00,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2022-01-10 02:33:00,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 766. [2022-01-10 02:33:00,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 703 states have (on average 1.5903271692745378) internal successors, (1118), 706 states have internal predecessors, (1118), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-01-10 02:33:00,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1217 transitions. [2022-01-10 02:33:00,726 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1217 transitions. Word has length 179 [2022-01-10 02:33:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:00,726 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1217 transitions. [2022-01-10 02:33:00,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:00,727 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1217 transitions. [2022-01-10 02:33:00,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:33:00,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:00,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:00,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:33:00,728 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:00,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:00,728 INFO L85 PathProgramCache]: Analyzing trace with hash -611636980, now seen corresponding path program 1 times [2022-01-10 02:33:00,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:00,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107150934] [2022-01-10 02:33:00,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:00,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:00,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:00,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:33:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:00,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:33:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:00,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:33:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:00,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:33:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:00,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:00,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:00,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107150934] [2022-01-10 02:33:00,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107150934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:00,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:00,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:00,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834409117] [2022-01-10 02:33:00,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:00,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:00,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:00,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:00,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:00,855 INFO L87 Difference]: Start difference. First operand 766 states and 1217 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:03,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:03,637 INFO L93 Difference]: Finished difference Result 2338 states and 3771 transitions. [2022-01-10 02:33:03,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:33:03,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 02:33:03,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:03,647 INFO L225 Difference]: With dead ends: 2338 [2022-01-10 02:33:03,647 INFO L226 Difference]: Without dead ends: 1593 [2022-01-10 02:33:03,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:33:03,649 INFO L933 BasicCegarLoop]: 1033 mSDtfsCounter, 1595 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 3144 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:03,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1614 Valid, 2989 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 3144 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 02:33:03,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2022-01-10 02:33:03,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1120. [2022-01-10 02:33:03,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1029 states have (on average 1.5840621963070942) internal successors, (1630), 1033 states have internal predecessors, (1630), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-01-10 02:33:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1773 transitions. [2022-01-10 02:33:03,702 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1773 transitions. Word has length 179 [2022-01-10 02:33:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:03,702 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 1773 transitions. [2022-01-10 02:33:03,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1773 transitions. [2022-01-10 02:33:03,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:33:03,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:03,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:03,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:33:03,704 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:03,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:03,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1913858702, now seen corresponding path program 1 times [2022-01-10 02:33:03,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:03,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119326865] [2022-01-10 02:33:03,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:03,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:03,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:03,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:33:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:03,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:33:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:03,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:33:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:03,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:33:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:03,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:03,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119326865] [2022-01-10 02:33:03,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119326865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:03,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:03,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:03,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971467593] [2022-01-10 02:33:03,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:03,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:03,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:03,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:03,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:03,826 INFO L87 Difference]: Start difference. First operand 1120 states and 1773 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:06,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:06,606 INFO L93 Difference]: Finished difference Result 3699 states and 5955 transitions. [2022-01-10 02:33:06,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:33:06,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 02:33:06,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:06,615 INFO L225 Difference]: With dead ends: 3699 [2022-01-10 02:33:06,615 INFO L226 Difference]: Without dead ends: 2600 [2022-01-10 02:33:06,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:33:06,618 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 1592 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 3146 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 2981 SdHoareTripleChecker+Invalid, 3228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:06,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1611 Valid, 2981 Invalid, 3228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3146 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 02:33:06,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2022-01-10 02:33:06,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 1829. [2022-01-10 02:33:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1682 states have (on average 1.5784780023781213) internal successors, (2655), 1688 states have internal predecessors, (2655), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-01-10 02:33:06,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2890 transitions. [2022-01-10 02:33:06,725 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2890 transitions. Word has length 179 [2022-01-10 02:33:06,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:06,725 INFO L470 AbstractCegarLoop]: Abstraction has 1829 states and 2890 transitions. [2022-01-10 02:33:06,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:06,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2890 transitions. [2022-01-10 02:33:06,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:33:06,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:06,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:06,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 02:33:06,727 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:06,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1302589644, now seen corresponding path program 1 times [2022-01-10 02:33:06,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:06,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942760542] [2022-01-10 02:33:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:06,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:06,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:06,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:33:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:06,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:33:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:06,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:33:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:06,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:33:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:06,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:06,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942760542] [2022-01-10 02:33:06,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942760542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:06,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:06,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:06,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835282156] [2022-01-10 02:33:06,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:06,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:06,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:06,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:06,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:06,830 INFO L87 Difference]: Start difference. First operand 1829 states and 2890 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:08,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:08,323 INFO L93 Difference]: Finished difference Result 4396 states and 7063 transitions. [2022-01-10 02:33:08,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:33:08,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 02:33:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:08,330 INFO L225 Difference]: With dead ends: 4396 [2022-01-10 02:33:08,331 INFO L226 Difference]: Without dead ends: 2588 [2022-01-10 02:33:08,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:33:08,334 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 1132 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:08,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 1625 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 02:33:08,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2022-01-10 02:33:08,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 1829. [2022-01-10 02:33:08,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1682 states have (on average 1.5755053507728893) internal successors, (2650), 1688 states have internal predecessors, (2650), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-01-10 02:33:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2885 transitions. [2022-01-10 02:33:08,435 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2885 transitions. Word has length 179 [2022-01-10 02:33:08,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:08,435 INFO L470 AbstractCegarLoop]: Abstraction has 1829 states and 2885 transitions. [2022-01-10 02:33:08,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:08,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2885 transitions. [2022-01-10 02:33:08,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:33:08,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:08,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:08,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 02:33:08,437 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:08,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:08,437 INFO L85 PathProgramCache]: Analyzing trace with hash -102602034, now seen corresponding path program 1 times [2022-01-10 02:33:08,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:08,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096905459] [2022-01-10 02:33:08,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:08,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:08,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:33:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:08,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:33:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:08,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:33:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:08,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:33:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:08,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:08,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096905459] [2022-01-10 02:33:08,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096905459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:08,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:08,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:08,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408058764] [2022-01-10 02:33:08,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:08,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:08,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:08,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:08,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:08,537 INFO L87 Difference]: Start difference. First operand 1829 states and 2885 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:10,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:10,014 INFO L93 Difference]: Finished difference Result 4390 states and 7037 transitions. [2022-01-10 02:33:10,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:33:10,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 02:33:10,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:10,023 INFO L225 Difference]: With dead ends: 4390 [2022-01-10 02:33:10,023 INFO L226 Difference]: Without dead ends: 2582 [2022-01-10 02:33:10,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:33:10,028 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 1132 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:10,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 1619 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 02:33:10,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2022-01-10 02:33:10,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 1829. [2022-01-10 02:33:10,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1682 states have (on average 1.5725326991676576) internal successors, (2645), 1688 states have internal predecessors, (2645), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-01-10 02:33:10,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2880 transitions. [2022-01-10 02:33:10,160 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2880 transitions. Word has length 179 [2022-01-10 02:33:10,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:10,160 INFO L470 AbstractCegarLoop]: Abstraction has 1829 states and 2880 transitions. [2022-01-10 02:33:10,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2880 transitions. [2022-01-10 02:33:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:33:10,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:10,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:10,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 02:33:10,162 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:10,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:10,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1791731852, now seen corresponding path program 1 times [2022-01-10 02:33:10,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:10,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773072301] [2022-01-10 02:33:10,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:10,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:10,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:10,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:33:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:10,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:33:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:10,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:33:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:10,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:33:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:10,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:10,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773072301] [2022-01-10 02:33:10,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773072301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:10,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:10,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:10,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141158067] [2022-01-10 02:33:10,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:10,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:10,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:10,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:10,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:10,265 INFO L87 Difference]: Start difference. First operand 1829 states and 2880 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:11,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:11,508 INFO L93 Difference]: Finished difference Result 4378 states and 6999 transitions. [2022-01-10 02:33:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:33:11,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 02:33:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:11,515 INFO L225 Difference]: With dead ends: 4378 [2022-01-10 02:33:11,515 INFO L226 Difference]: Without dead ends: 2570 [2022-01-10 02:33:11,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:33:11,538 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 1374 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:11,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1394 Valid, 1370 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:33:11,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2022-01-10 02:33:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 1829. [2022-01-10 02:33:11,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1682 states have (on average 1.5695600475624256) internal successors, (2640), 1688 states have internal predecessors, (2640), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-01-10 02:33:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2875 transitions. [2022-01-10 02:33:11,663 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2875 transitions. Word has length 179 [2022-01-10 02:33:11,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:11,663 INFO L470 AbstractCegarLoop]: Abstraction has 1829 states and 2875 transitions. [2022-01-10 02:33:11,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:11,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2875 transitions. [2022-01-10 02:33:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:33:11,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:11,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:11,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 02:33:11,665 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:11,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:11,665 INFO L85 PathProgramCache]: Analyzing trace with hash 868564426, now seen corresponding path program 1 times [2022-01-10 02:33:11,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:11,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101709976] [2022-01-10 02:33:11,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:11,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:11,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:11,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:33:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:11,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:33:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:11,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:33:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:11,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:33:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:11,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:11,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101709976] [2022-01-10 02:33:11,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101709976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:11,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:11,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:11,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830413462] [2022-01-10 02:33:11,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:11,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:11,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:11,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:11,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:11,774 INFO L87 Difference]: Start difference. First operand 1829 states and 2875 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:14,573 INFO L93 Difference]: Finished difference Result 6291 states and 10012 transitions. [2022-01-10 02:33:14,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:33:14,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 02:33:14,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:14,585 INFO L225 Difference]: With dead ends: 6291 [2022-01-10 02:33:14,585 INFO L226 Difference]: Without dead ends: 4483 [2022-01-10 02:33:14,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:33:14,589 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 1567 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 3068 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 3154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:14,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1586 Valid, 2953 Invalid, 3154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3068 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 02:33:14,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4483 states. [2022-01-10 02:33:14,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4483 to 3266. [2022-01-10 02:33:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 3007 states have (on average 1.5643498503491853) internal successors, (4704), 3017 states have internal predecessors, (4704), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-01-10 02:33:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 5129 transitions. [2022-01-10 02:33:14,824 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 5129 transitions. Word has length 179 [2022-01-10 02:33:14,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:14,824 INFO L470 AbstractCegarLoop]: Abstraction has 3266 states and 5129 transitions. [2022-01-10 02:33:14,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:14,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 5129 transitions. [2022-01-10 02:33:14,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:33:14,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:14,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:14,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 02:33:14,827 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:14,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:14,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1254426828, now seen corresponding path program 1 times [2022-01-10 02:33:14,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:14,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575958803] [2022-01-10 02:33:14,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:14,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:14,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:14,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:33:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:14,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:33:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:14,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:33:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:14,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:33:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:14,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:14,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:14,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575958803] [2022-01-10 02:33:14,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575958803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:14,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:14,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:14,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370004849] [2022-01-10 02:33:14,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:14,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:14,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:14,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:14,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:14,921 INFO L87 Difference]: Start difference. First operand 3266 states and 5129 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:16,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:16,574 INFO L93 Difference]: Finished difference Result 7748 states and 12334 transitions. [2022-01-10 02:33:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:33:16,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 02:33:16,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:16,585 INFO L225 Difference]: With dead ends: 7748 [2022-01-10 02:33:16,585 INFO L226 Difference]: Without dead ends: 4503 [2022-01-10 02:33:16,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:33:16,590 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 1128 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:16,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1148 Valid, 1606 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 02:33:16,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states. [2022-01-10 02:33:16,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 3266. [2022-01-10 02:33:16,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 3007 states have (on average 1.5613568340538744) internal successors, (4695), 3017 states have internal predecessors, (4695), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-01-10 02:33:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 5120 transitions. [2022-01-10 02:33:16,839 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 5120 transitions. Word has length 179 [2022-01-10 02:33:16,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:16,839 INFO L470 AbstractCegarLoop]: Abstraction has 3266 states and 5120 transitions. [2022-01-10 02:33:16,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:16,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 5120 transitions. [2022-01-10 02:33:16,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:33:16,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:16,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:16,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 02:33:16,842 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:16,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:16,842 INFO L85 PathProgramCache]: Analyzing trace with hash 989779338, now seen corresponding path program 1 times [2022-01-10 02:33:16,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:16,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450574135] [2022-01-10 02:33:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:16,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:16,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:16,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:33:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:16,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:33:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:16,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:33:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:16,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:33:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:16,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:16,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450574135] [2022-01-10 02:33:16,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450574135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:16,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:16,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:16,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574797244] [2022-01-10 02:33:16,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:16,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:16,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:16,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:16,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:16,945 INFO L87 Difference]: Start difference. First operand 3266 states and 5120 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:20,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:20,204 INFO L93 Difference]: Finished difference Result 11516 states and 18248 transitions. [2022-01-10 02:33:20,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:33:20,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 02:33:20,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:20,234 INFO L225 Difference]: With dead ends: 11516 [2022-01-10 02:33:20,234 INFO L226 Difference]: Without dead ends: 8271 [2022-01-10 02:33:20,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:33:20,241 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 1559 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 3041 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 3127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:20,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1578 Valid, 2942 Invalid, 3127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3041 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 02:33:20,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8271 states. [2022-01-10 02:33:20,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8271 to 6148. [2022-01-10 02:33:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 5665 states have (on average 1.5567519858781995) internal successors, (8819), 5683 states have internal predecessors, (8819), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-01-10 02:33:20,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 9642 transitions. [2022-01-10 02:33:20,728 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 9642 transitions. Word has length 179 [2022-01-10 02:33:20,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:20,728 INFO L470 AbstractCegarLoop]: Abstraction has 6148 states and 9642 transitions. [2022-01-10 02:33:20,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:20,729 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 9642 transitions. [2022-01-10 02:33:20,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:33:20,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:20,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:20,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 02:33:20,732 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:20,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:20,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1374062324, now seen corresponding path program 1 times [2022-01-10 02:33:20,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:20,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486409585] [2022-01-10 02:33:20,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:20,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:20,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:20,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:33:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:20,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:33:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:20,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:33:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:20,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:33:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:20,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:20,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486409585] [2022-01-10 02:33:20,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486409585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:20,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:20,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:20,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104537900] [2022-01-10 02:33:20,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:20,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:20,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:20,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:20,873 INFO L87 Difference]: Start difference. First operand 6148 states and 9642 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:22,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:22,732 INFO L93 Difference]: Finished difference Result 14476 states and 22997 transitions. [2022-01-10 02:33:22,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:33:22,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 02:33:22,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:22,751 INFO L225 Difference]: With dead ends: 14476 [2022-01-10 02:33:22,751 INFO L226 Difference]: Without dead ends: 8349 [2022-01-10 02:33:22,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:33:22,764 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 1294 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:22,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 1396 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:33:22,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8349 states. [2022-01-10 02:33:23,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8349 to 6148. [2022-01-10 02:33:23,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 5665 states have (on average 1.5537511032656663) internal successors, (8802), 5683 states have internal predecessors, (8802), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-01-10 02:33:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 9625 transitions. [2022-01-10 02:33:23,258 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 9625 transitions. Word has length 179 [2022-01-10 02:33:23,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:23,259 INFO L470 AbstractCegarLoop]: Abstraction has 6148 states and 9625 transitions. [2022-01-10 02:33:23,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:23,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 9625 transitions. [2022-01-10 02:33:23,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:33:23,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:23,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:23,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 02:33:23,262 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:23,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:23,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1597726026, now seen corresponding path program 1 times [2022-01-10 02:33:23,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:23,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366425583] [2022-01-10 02:33:23,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:23,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:33:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:33:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:33:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:33:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:23,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:23,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366425583] [2022-01-10 02:33:23,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366425583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:23,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:23,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:23,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680916297] [2022-01-10 02:33:23,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:23,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:23,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:23,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:23,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:23,368 INFO L87 Difference]: Start difference. First operand 6148 states and 9625 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:25,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:25,308 INFO L93 Difference]: Finished difference Result 14458 states and 22910 transitions. [2022-01-10 02:33:25,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:33:25,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 02:33:25,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:25,330 INFO L225 Difference]: With dead ends: 14458 [2022-01-10 02:33:25,331 INFO L226 Difference]: Without dead ends: 8331 [2022-01-10 02:33:25,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:33:25,342 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 1292 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:25,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 1392 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:33:25,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8331 states. [2022-01-10 02:33:25,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8331 to 6148. [2022-01-10 02:33:25,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 5665 states have (on average 1.5507502206531332) internal successors, (8785), 5683 states have internal predecessors, (8785), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-01-10 02:33:25,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 9608 transitions. [2022-01-10 02:33:25,938 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 9608 transitions. Word has length 179 [2022-01-10 02:33:25,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:25,939 INFO L470 AbstractCegarLoop]: Abstraction has 6148 states and 9608 transitions. [2022-01-10 02:33:25,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:25,939 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 9608 transitions. [2022-01-10 02:33:25,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:33:25,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:25,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:25,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 02:33:25,942 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:25,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash -800261812, now seen corresponding path program 1 times [2022-01-10 02:33:25,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:25,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686056568] [2022-01-10 02:33:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:25,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:25,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:33:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:26,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:33:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:26,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:33:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:26,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:33:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:26,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:26,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:26,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686056568] [2022-01-10 02:33:26,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686056568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:26,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:26,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:26,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529321954] [2022-01-10 02:33:26,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:26,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:26,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:26,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:26,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:26,050 INFO L87 Difference]: Start difference. First operand 6148 states and 9608 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:30,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:30,290 INFO L93 Difference]: Finished difference Result 21944 states and 34608 transitions. [2022-01-10 02:33:30,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:33:30,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 02:33:30,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:30,327 INFO L225 Difference]: With dead ends: 21944 [2022-01-10 02:33:30,328 INFO L226 Difference]: Without dead ends: 15817 [2022-01-10 02:33:30,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:33:30,340 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 1547 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 2992 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:30,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1566 Valid, 2923 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2992 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 02:33:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15817 states. [2022-01-10 02:33:31,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15817 to 11959. [2022-01-10 02:33:31,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11959 states, 11028 states have (on average 1.5465179542981502) internal successors, (17055), 11062 states have internal predecessors, (17055), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-01-10 02:33:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11959 states to 11959 states and 18728 transitions. [2022-01-10 02:33:31,447 INFO L78 Accepts]: Start accepts. Automaton has 11959 states and 18728 transitions. Word has length 179 [2022-01-10 02:33:31,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:31,447 INFO L470 AbstractCegarLoop]: Abstraction has 11959 states and 18728 transitions. [2022-01-10 02:33:31,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:31,447 INFO L276 IsEmpty]: Start isEmpty. Operand 11959 states and 18728 transitions. [2022-01-10 02:33:31,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:33:31,451 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:31,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:31,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 02:33:31,451 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:31,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:31,451 INFO L85 PathProgramCache]: Analyzing trace with hash -461974262, now seen corresponding path program 1 times [2022-01-10 02:33:31,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:31,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346385525] [2022-01-10 02:33:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:31,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:31,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:33:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:31,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:33:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:31,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:33:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:31,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:33:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:31,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:31,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346385525] [2022-01-10 02:33:31,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346385525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:31,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:31,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:31,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413229668] [2022-01-10 02:33:31,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:31,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:31,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:31,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:31,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:31,570 INFO L87 Difference]: Start difference. First operand 11959 states and 18728 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:39,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:39,564 INFO L93 Difference]: Finished difference Result 48119 states and 75904 transitions. [2022-01-10 02:33:39,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:33:39,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 02:33:39,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:39,663 INFO L225 Difference]: With dead ends: 48119 [2022-01-10 02:33:39,663 INFO L226 Difference]: Without dead ends: 36181 [2022-01-10 02:33:39,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:33:39,692 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 1745 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 3235 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 3362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:39,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1763 Valid, 2237 Invalid, 3362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3235 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 02:33:39,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36181 states. [2022-01-10 02:33:41,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36181 to 23225. [2022-01-10 02:33:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23225 states, 21430 states have (on average 1.5426504899673354) internal successors, (33059), 21496 states have internal predecessors, (33059), 1340 states have call successors, (1340), 391 states have call predecessors, (1340), 454 states have return successors, (2131), 1401 states have call predecessors, (2131), 1338 states have call successors, (2131) [2022-01-10 02:33:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23225 states to 23225 states and 36530 transitions. [2022-01-10 02:33:42,032 INFO L78 Accepts]: Start accepts. Automaton has 23225 states and 36530 transitions. Word has length 179 [2022-01-10 02:33:42,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:42,032 INFO L470 AbstractCegarLoop]: Abstraction has 23225 states and 36530 transitions. [2022-01-10 02:33:42,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:33:42,033 INFO L276 IsEmpty]: Start isEmpty. Operand 23225 states and 36530 transitions. [2022-01-10 02:33:42,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:33:42,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:42,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:42,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 02:33:42,040 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:42,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:42,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1002403768, now seen corresponding path program 1 times [2022-01-10 02:33:42,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:42,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242156059] [2022-01-10 02:33:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:42,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:42,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:42,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 02:33:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:42,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:33:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:42,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:33:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:42,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-10 02:33:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:42,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:42,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242156059] [2022-01-10 02:33:42,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242156059] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:42,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:42,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:42,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332199596] [2022-01-10 02:33:42,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:42,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:42,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:42,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:42,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:42,151 INFO L87 Difference]: Start difference. First operand 23225 states and 36530 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)