/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/eca-rers2012/Problem15_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:15:36,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:15:36,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:15:36,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 00:15:36,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 00:15:36,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 00:15:36,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 00:15:36,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 00:15:36,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 00:15:36,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 00:15:36,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 00:15:36,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 00:15:36,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 00:15:36,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 00:15:36,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 00:15:36,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 00:15:36,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 00:15:36,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 00:15:36,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 00:15:36,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 00:15:36,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 00:15:36,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 00:15:36,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 00:15:36,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 00:15:36,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 00:15:36,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 00:15:36,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 00:15:36,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 00:15:36,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 00:15:36,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 00:15:36,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 00:15:36,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 00:15:36,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 00:15:36,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 00:15:36,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 00:15:36,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 00:15:36,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 00:15:36,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 00:15:36,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 00:15:36,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 00:15:36,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 00:15:36,667 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 00:15:36,693 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:15:36,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:15:36,694 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:15:36,694 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:15:36,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:15:36,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:15:36,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:15:36,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:15:36,695 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:15:36,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:15:36,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:15:36,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:15:36,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:15:36,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:15:36,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:15:36,697 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:15:36,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:15:36,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:15:36,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:15:36,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:15:36,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:15:36,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:15:36,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:15:36,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:15:36,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:15:36,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:15:36,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:15:36,699 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:15:36,699 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:15:36,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:15:36,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:15:36,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:15:36,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:15:36,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:15:36,903 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:15:36,903 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:15:36,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label08.c [2022-01-10 00:15:36,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e7f2ec34/d82e894f15be4ba3a18eadb4890eed21/FLAG9d5988d4e [2022-01-10 00:15:37,536 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:15:37,536 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label08.c [2022-01-10 00:15:37,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e7f2ec34/d82e894f15be4ba3a18eadb4890eed21/FLAG9d5988d4e [2022-01-10 00:15:37,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e7f2ec34/d82e894f15be4ba3a18eadb4890eed21 [2022-01-10 00:15:37,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:15:37,769 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:15:37,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:15:37,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:15:37,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:15:37,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:15:37" (1/1) ... [2022-01-10 00:15:37,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3c2b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:37, skipping insertion in model container [2022-01-10 00:15:37,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:15:37" (1/1) ... [2022-01-10 00:15:37,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:15:37,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:15:38,014 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label08.c[6299,6312] [2022-01-10 00:15:38,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:15:38,302 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:15:38,329 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label08.c[6299,6312] [2022-01-10 00:15:38,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:15:38,445 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:15:38,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:38 WrapperNode [2022-01-10 00:15:38,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:15:38,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:15:38,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:15:38,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:15:38,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:38" (1/1) ... [2022-01-10 00:15:38,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:38" (1/1) ... [2022-01-10 00:15:38,647 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1758 [2022-01-10 00:15:38,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:15:38,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:15:38,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:15:38,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:15:38,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:38" (1/1) ... [2022-01-10 00:15:38,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:38" (1/1) ... [2022-01-10 00:15:38,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:38" (1/1) ... [2022-01-10 00:15:38,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:38" (1/1) ... [2022-01-10 00:15:38,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:38" (1/1) ... [2022-01-10 00:15:38,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:38" (1/1) ... [2022-01-10 00:15:38,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:38" (1/1) ... [2022-01-10 00:15:38,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:15:38,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:15:38,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:15:38,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:15:38,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:38" (1/1) ... [2022-01-10 00:15:38,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:15:38,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:15:38,830 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 00:15:38,850 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 00:15:38,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:15:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:15:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:15:38,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:15:38,905 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:15:38,906 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:15:41,009 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:15:41,021 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:15:41,022 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:15:41,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:15:41 BoogieIcfgContainer [2022-01-10 00:15:41,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:15:41,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:15:41,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:15:41,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:15:41,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:15:37" (1/3) ... [2022-01-10 00:15:41,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98d5230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:15:41, skipping insertion in model container [2022-01-10 00:15:41,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:38" (2/3) ... [2022-01-10 00:15:41,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98d5230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:15:41, skipping insertion in model container [2022-01-10 00:15:41,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:15:41" (3/3) ... [2022-01-10 00:15:41,030 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label08.c [2022-01-10 00:15:41,034 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:15:41,034 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:15:41,080 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:15:41,087 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 00:15:41,087 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:15:41,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:41,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 00:15:41,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:15:41,115 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] [2022-01-10 00:15:41,116 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:15:41,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:15:41,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2122806209, now seen corresponding path program 1 times [2022-01-10 00:15:41,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:15:41,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938041367] [2022-01-10 00:15:41,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:15:41,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:15:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:15:41,324 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 00:15:41,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:15:41,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938041367] [2022-01-10 00:15:41,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938041367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:15:41,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:15:41,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:15:41,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147282690] [2022-01-10 00:15:41,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:15:41,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:15:41,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:15:41,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:15:41,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:41,355 INFO L87 Difference]: Start difference. First operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:42,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:15:42,813 INFO L93 Difference]: Finished difference Result 1155 states and 2106 transitions. [2022-01-10 00:15:42,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:15:42,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-10 00:15:42,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:15:42,826 INFO L225 Difference]: With dead ends: 1155 [2022-01-10 00:15:42,826 INFO L226 Difference]: Without dead ends: 667 [2022-01-10 00:15:42,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:42,838 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 293 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:15:42,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 371 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:15:42,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-01-10 00:15:42,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 665. [2022-01-10 00:15:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 664 states have (on average 1.4789156626506024) internal successors, (982), 664 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:42,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 982 transitions. [2022-01-10 00:15:42,938 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 982 transitions. Word has length 51 [2022-01-10 00:15:42,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:15:42,938 INFO L470 AbstractCegarLoop]: Abstraction has 665 states and 982 transitions. [2022-01-10 00:15:42,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:42,939 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 982 transitions. [2022-01-10 00:15:42,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 00:15:42,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:15:42,941 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:15:42,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:15:42,942 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:15:42,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:15:42,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1480819463, now seen corresponding path program 1 times [2022-01-10 00:15:42,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:15:42,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280768124] [2022-01-10 00:15:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:15:42,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:15:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:15:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:15:43,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:15:43,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280768124] [2022-01-10 00:15:43,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280768124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:15:43,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:15:43,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:15:43,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503845691] [2022-01-10 00:15:43,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:15:43,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:15:43,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:15:43,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:15:43,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:43,152 INFO L87 Difference]: Start difference. First operand 665 states and 982 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:44,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:15:44,826 INFO L93 Difference]: Finished difference Result 1955 states and 2894 transitions. [2022-01-10 00:15:44,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:15:44,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 00:15:44,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:15:44,831 INFO L225 Difference]: With dead ends: 1955 [2022-01-10 00:15:44,831 INFO L226 Difference]: Without dead ends: 1292 [2022-01-10 00:15:44,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:44,834 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 258 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:15:44,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 327 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:15:44,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2022-01-10 00:15:44,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1282. [2022-01-10 00:15:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 1.3989071038251366) internal successors, (1792), 1281 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:44,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1792 transitions. [2022-01-10 00:15:44,883 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1792 transitions. Word has length 126 [2022-01-10 00:15:44,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:15:44,883 INFO L470 AbstractCegarLoop]: Abstraction has 1282 states and 1792 transitions. [2022-01-10 00:15:44,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1792 transitions. [2022-01-10 00:15:44,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 00:15:44,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:15:44,887 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:15:44,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:15:44,887 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:15:44,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:15:44,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1300617233, now seen corresponding path program 1 times [2022-01-10 00:15:44,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:15:44,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545743823] [2022-01-10 00:15:44,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:15:44,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:15:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:15:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:15:44,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:15:44,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545743823] [2022-01-10 00:15:44,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545743823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:15:44,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:15:44,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:15:44,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107736610] [2022-01-10 00:15:44,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:15:44,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:15:44,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:15:44,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:15:44,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:44,944 INFO L87 Difference]: Start difference. First operand 1282 states and 1792 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:46,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:15:46,510 INFO L93 Difference]: Finished difference Result 3764 states and 5263 transitions. [2022-01-10 00:15:46,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:15:46,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-01-10 00:15:46,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:15:46,519 INFO L225 Difference]: With dead ends: 3764 [2022-01-10 00:15:46,519 INFO L226 Difference]: Without dead ends: 2484 [2022-01-10 00:15:46,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:46,526 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 236 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:15:46,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 366 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:15:46,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2022-01-10 00:15:46,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2182. [2022-01-10 00:15:46,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2182 states, 2181 states have (on average 1.2815222375057314) internal successors, (2795), 2181 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2795 transitions. [2022-01-10 00:15:46,559 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2795 transitions. Word has length 130 [2022-01-10 00:15:46,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:15:46,561 INFO L470 AbstractCegarLoop]: Abstraction has 2182 states and 2795 transitions. [2022-01-10 00:15:46,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:46,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2795 transitions. [2022-01-10 00:15:46,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-10 00:15:46,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:15:46,568 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:15:46,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:15:46,569 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:15:46,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:15:46,569 INFO L85 PathProgramCache]: Analyzing trace with hash 26872092, now seen corresponding path program 1 times [2022-01-10 00:15:46,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:15:46,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116507575] [2022-01-10 00:15:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:15:46,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:15:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:15:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-01-10 00:15:46,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:15:46,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116507575] [2022-01-10 00:15:46,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116507575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:15:46,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:15:46,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:15:46,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752878689] [2022-01-10 00:15:46,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:15:46,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:15:46,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:15:46,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:15:46,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:46,731 INFO L87 Difference]: Start difference. First operand 2182 states and 2795 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:47,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:15:47,849 INFO L93 Difference]: Finished difference Result 6166 states and 7961 transitions. [2022-01-10 00:15:47,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:15:47,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2022-01-10 00:15:47,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:15:47,860 INFO L225 Difference]: With dead ends: 6166 [2022-01-10 00:15:47,860 INFO L226 Difference]: Without dead ends: 3986 [2022-01-10 00:15:47,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:47,867 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 257 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:15:47,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 339 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 00:15:47,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2022-01-10 00:15:47,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3682. [2022-01-10 00:15:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3682 states, 3681 states have (on average 1.2200488997555012) internal successors, (4491), 3681 states have internal predecessors, (4491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:47,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 4491 transitions. [2022-01-10 00:15:47,912 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 4491 transitions. Word has length 221 [2022-01-10 00:15:47,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:15:47,913 INFO L470 AbstractCegarLoop]: Abstraction has 3682 states and 4491 transitions. [2022-01-10 00:15:47,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:47,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 4491 transitions. [2022-01-10 00:15:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-01-10 00:15:47,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:15:47,916 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:47,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:15:47,916 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:15:47,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:15:47,917 INFO L85 PathProgramCache]: Analyzing trace with hash -758886988, now seen corresponding path program 1 times [2022-01-10 00:15:47,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:15:47,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038793784] [2022-01-10 00:15:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:15:47,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:15:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:15:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-01-10 00:15:48,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:15:48,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038793784] [2022-01-10 00:15:48,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038793784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:15:48,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:15:48,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:15:48,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607206710] [2022-01-10 00:15:48,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:15:48,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:15:48,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:15:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:15:48,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:48,081 INFO L87 Difference]: Start difference. First operand 3682 states and 4491 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:49,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:15:49,372 INFO L93 Difference]: Finished difference Result 7661 states and 9291 transitions. [2022-01-10 00:15:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:15:49,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 323 [2022-01-10 00:15:49,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:15:49,397 INFO L225 Difference]: With dead ends: 7661 [2022-01-10 00:15:49,397 INFO L226 Difference]: Without dead ends: 3981 [2022-01-10 00:15:49,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:49,401 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:15:49,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 359 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 00:15:49,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3981 states. [2022-01-10 00:15:49,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3981 to 3981. [2022-01-10 00:15:49,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3981 states, 3980 states have (on average 1.2050251256281408) internal successors, (4796), 3980 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3981 states to 3981 states and 4796 transitions. [2022-01-10 00:15:49,464 INFO L78 Accepts]: Start accepts. Automaton has 3981 states and 4796 transitions. Word has length 323 [2022-01-10 00:15:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:15:49,464 INFO L470 AbstractCegarLoop]: Abstraction has 3981 states and 4796 transitions. [2022-01-10 00:15:49,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:49,465 INFO L276 IsEmpty]: Start isEmpty. Operand 3981 states and 4796 transitions. [2022-01-10 00:15:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-01-10 00:15:49,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:15:49,468 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:15:49,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:15:49,468 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:15:49,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:15:49,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1026245797, now seen corresponding path program 1 times [2022-01-10 00:15:49,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:15:49,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052758652] [2022-01-10 00:15:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:15:49,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:15:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:15:49,639 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-10 00:15:49,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:15:49,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052758652] [2022-01-10 00:15:49,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052758652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:15:49,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:15:49,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:15:49,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674776193] [2022-01-10 00:15:49,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:15:49,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:15:49,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:15:49,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:15:49,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:49,643 INFO L87 Difference]: Start difference. First operand 3981 states and 4796 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:50,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:15:50,859 INFO L93 Difference]: Finished difference Result 8857 states and 10953 transitions. [2022-01-10 00:15:50,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:15:50,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2022-01-10 00:15:50,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:15:50,880 INFO L225 Difference]: With dead ends: 8857 [2022-01-10 00:15:50,881 INFO L226 Difference]: Without dead ends: 5177 [2022-01-10 00:15:50,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:50,885 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 264 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:15:50,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 322 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 00:15:50,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5177 states. [2022-01-10 00:15:50,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5177 to 3678. [2022-01-10 00:15:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 3677 states have (on average 1.2181125917867828) internal successors, (4479), 3677 states have internal predecessors, (4479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:51,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 4479 transitions. [2022-01-10 00:15:51,008 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 4479 transitions. Word has length 338 [2022-01-10 00:15:51,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:15:51,009 INFO L470 AbstractCegarLoop]: Abstraction has 3678 states and 4479 transitions. [2022-01-10 00:15:51,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:51,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 4479 transitions. [2022-01-10 00:15:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-01-10 00:15:51,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:15:51,012 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:51,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:15:51,013 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:15:51,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:15:51,013 INFO L85 PathProgramCache]: Analyzing trace with hash 670102626, now seen corresponding path program 1 times [2022-01-10 00:15:51,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:15:51,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550937430] [2022-01-10 00:15:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:15:51,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:15:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:15:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-10 00:15:51,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:15:51,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550937430] [2022-01-10 00:15:51,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550937430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:15:51,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:15:51,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:15:51,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358005168] [2022-01-10 00:15:51,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:15:51,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:15:51,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:15:51,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:15:51,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:51,208 INFO L87 Difference]: Start difference. First operand 3678 states and 4479 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:15:52,462 INFO L93 Difference]: Finished difference Result 9157 states and 11369 transitions. [2022-01-10 00:15:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:15:52,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 397 [2022-01-10 00:15:52,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:15:52,475 INFO L225 Difference]: With dead ends: 9157 [2022-01-10 00:15:52,475 INFO L226 Difference]: Without dead ends: 5780 [2022-01-10 00:15:52,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:52,479 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 277 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:15:52,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 637 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 00:15:52,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2022-01-10 00:15:52,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 5182. [2022-01-10 00:15:52,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5182 states, 5181 states have (on average 1.1767998455896544) internal successors, (6097), 5181 states have internal predecessors, (6097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5182 states to 5182 states and 6097 transitions. [2022-01-10 00:15:52,533 INFO L78 Accepts]: Start accepts. Automaton has 5182 states and 6097 transitions. Word has length 397 [2022-01-10 00:15:52,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:15:52,533 INFO L470 AbstractCegarLoop]: Abstraction has 5182 states and 6097 transitions. [2022-01-10 00:15:52,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:52,534 INFO L276 IsEmpty]: Start isEmpty. Operand 5182 states and 6097 transitions. [2022-01-10 00:15:52,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-01-10 00:15:52,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:15:52,537 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:52,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:15:52,538 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:15:52,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:15:52,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1374004594, now seen corresponding path program 1 times [2022-01-10 00:15:52,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:15:52,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442444549] [2022-01-10 00:15:52,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:15:52,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:15:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:15:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:15:52,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:15:52,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442444549] [2022-01-10 00:15:52,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442444549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:15:52,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:15:52,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:15:52,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482435505] [2022-01-10 00:15:52,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:15:52,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:15:52,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:15:52,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:15:52,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:52,687 INFO L87 Difference]: Start difference. First operand 5182 states and 6097 transitions. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:53,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:15:53,691 INFO L93 Difference]: Finished difference Result 10059 states and 11883 transitions. [2022-01-10 00:15:53,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:15:53,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 403 [2022-01-10 00:15:53,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:15:53,703 INFO L225 Difference]: With dead ends: 10059 [2022-01-10 00:15:53,703 INFO L226 Difference]: Without dead ends: 5178 [2022-01-10 00:15:53,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:53,707 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 314 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:15:53,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 144 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 00:15:53,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5178 states. [2022-01-10 00:15:53,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5178 to 5176. [2022-01-10 00:15:53,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 5175 states have (on average 1.1586473429951691) internal successors, (5996), 5175 states have internal predecessors, (5996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 5996 transitions. [2022-01-10 00:15:53,756 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 5996 transitions. Word has length 403 [2022-01-10 00:15:53,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:15:53,756 INFO L470 AbstractCegarLoop]: Abstraction has 5176 states and 5996 transitions. [2022-01-10 00:15:53,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 5996 transitions. [2022-01-10 00:15:53,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-01-10 00:15:53,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:15:53,762 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:53,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:15:53,763 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:15:53,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:15:53,763 INFO L85 PathProgramCache]: Analyzing trace with hash -19384805, now seen corresponding path program 1 times [2022-01-10 00:15:53,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:15:53,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828707412] [2022-01-10 00:15:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:15:53,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:15:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:15:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:15:53,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:15:53,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828707412] [2022-01-10 00:15:53,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828707412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:15:53,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:15:53,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:15:53,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107676423] [2022-01-10 00:15:53,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:15:53,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:15:53,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:15:53,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:15:53,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:53,947 INFO L87 Difference]: Start difference. First operand 5176 states and 5996 transitions. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:55,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:15:55,197 INFO L93 Difference]: Finished difference Result 11857 states and 13998 transitions. [2022-01-10 00:15:55,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:15:55,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 414 [2022-01-10 00:15:55,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:15:55,207 INFO L225 Difference]: With dead ends: 11857 [2022-01-10 00:15:55,207 INFO L226 Difference]: Without dead ends: 6982 [2022-01-10 00:15:55,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:55,212 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 247 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:15:55,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 599 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 00:15:55,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6982 states. [2022-01-10 00:15:55,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6982 to 6082. [2022-01-10 00:15:55,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6082 states, 6081 states have (on average 1.1494819930932412) internal successors, (6990), 6081 states have internal predecessors, (6990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:55,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6082 states to 6082 states and 6990 transitions. [2022-01-10 00:15:55,289 INFO L78 Accepts]: Start accepts. Automaton has 6082 states and 6990 transitions. Word has length 414 [2022-01-10 00:15:55,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:15:55,289 INFO L470 AbstractCegarLoop]: Abstraction has 6082 states and 6990 transitions. [2022-01-10 00:15:55,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:55,290 INFO L276 IsEmpty]: Start isEmpty. Operand 6082 states and 6990 transitions. [2022-01-10 00:15:55,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-01-10 00:15:55,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:15:55,295 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:55,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:15:55,295 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:15:55,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:15:55,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1017641080, now seen corresponding path program 1 times [2022-01-10 00:15:55,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:15:55,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118575424] [2022-01-10 00:15:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:15:55,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:15:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:15:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 49 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:15:55,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:15:55,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118575424] [2022-01-10 00:15:55,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118575424] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:15:55,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100121864] [2022-01-10 00:15:55,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:15:55,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:15:55,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:15:55,461 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 00:15:55,503 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 00:15:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:15:55,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:15:55,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:15:56,322 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-01-10 00:15:56,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:15:56,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100121864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:15:56,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:15:56,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-01-10 00:15:56,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976142524] [2022-01-10 00:15:56,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:15:56,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:15:56,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:15:56,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:15:56,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:15:56,323 INFO L87 Difference]: Start difference. First operand 6082 states and 6990 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:58,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:15:58,684 INFO L93 Difference]: Finished difference Result 14321 states and 16770 transitions. [2022-01-10 00:15:58,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:15:58,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 428 [2022-01-10 00:15:58,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:15:58,698 INFO L225 Difference]: With dead ends: 14321 [2022-01-10 00:15:58,698 INFO L226 Difference]: Without dead ends: 8540 [2022-01-10 00:15:58,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:15:58,704 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 365 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:15:58,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 540 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 00:15:58,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8540 states. [2022-01-10 00:15:58,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8540 to 8535. [2022-01-10 00:15:58,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8535 states, 8534 states have (on average 1.163229435200375) internal successors, (9927), 8534 states have internal predecessors, (9927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:58,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8535 states to 8535 states and 9927 transitions. [2022-01-10 00:15:58,778 INFO L78 Accepts]: Start accepts. Automaton has 8535 states and 9927 transitions. Word has length 428 [2022-01-10 00:15:58,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:15:58,779 INFO L470 AbstractCegarLoop]: Abstraction has 8535 states and 9927 transitions. [2022-01-10 00:15:58,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:15:58,779 INFO L276 IsEmpty]: Start isEmpty. Operand 8535 states and 9927 transitions. [2022-01-10 00:15:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-01-10 00:15:58,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:15:58,781 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:15:58,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 00:15:58,995 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,SelfDestructingSolverStorable9 [2022-01-10 00:15:58,996 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:15:58,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:15:58,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1122204088, now seen corresponding path program 1 times [2022-01-10 00:15:58,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:15:58,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281011727] [2022-01-10 00:15:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:15:58,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:15:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:15:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-10 00:15:59,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:15:59,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281011727] [2022-01-10 00:15:59,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281011727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:15:59,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:15:59,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:15:59,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352346814] [2022-01-10 00:15:59,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:15:59,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:15:59,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:15:59,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:15:59,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:15:59,125 INFO L87 Difference]: Start difference. First operand 8535 states and 9927 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:00,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:16:00,402 INFO L93 Difference]: Finished difference Result 19164 states and 22694 transitions. [2022-01-10 00:16:00,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:16:00,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 430 [2022-01-10 00:16:00,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:16:00,419 INFO L225 Difference]: With dead ends: 19164 [2022-01-10 00:16:00,419 INFO L226 Difference]: Without dead ends: 10930 [2022-01-10 00:16:00,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:16:00,426 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 236 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:16:00,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 616 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 00:16:00,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10930 states. [2022-01-10 00:16:00,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10930 to 10926. [2022-01-10 00:16:00,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10926 states, 10925 states have (on average 1.1475514874141877) internal successors, (12537), 10925 states have internal predecessors, (12537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:00,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10926 states to 10926 states and 12537 transitions. [2022-01-10 00:16:00,527 INFO L78 Accepts]: Start accepts. Automaton has 10926 states and 12537 transitions. Word has length 430 [2022-01-10 00:16:00,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:16:00,528 INFO L470 AbstractCegarLoop]: Abstraction has 10926 states and 12537 transitions. [2022-01-10 00:16:00,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:00,528 INFO L276 IsEmpty]: Start isEmpty. Operand 10926 states and 12537 transitions. [2022-01-10 00:16:00,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-01-10 00:16:00,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:16:00,531 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:16:00,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:16:00,532 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:16:00,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:16:00,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1198309214, now seen corresponding path program 1 times [2022-01-10 00:16:00,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:16:00,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014796692] [2022-01-10 00:16:00,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:16:00,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:16:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:16:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 289 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-01-10 00:16:00,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:16:00,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014796692] [2022-01-10 00:16:00,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014796692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:16:00,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:16:00,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:16:00,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625377040] [2022-01-10 00:16:00,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:16:00,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:16:00,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:16:00,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:16:00,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:16:00,672 INFO L87 Difference]: Start difference. First operand 10926 states and 12537 transitions. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:02,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:16:02,208 INFO L93 Difference]: Finished difference Result 28426 states and 32728 transitions. [2022-01-10 00:16:02,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:16:02,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 500 [2022-01-10 00:16:02,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:16:02,253 INFO L225 Difference]: With dead ends: 28426 [2022-01-10 00:16:02,253 INFO L226 Difference]: Without dead ends: 17801 [2022-01-10 00:16:02,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:16:02,261 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 301 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:16:02,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 193 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:16:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17801 states. [2022-01-10 00:16:02,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17801 to 16007. [2022-01-10 00:16:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16007 states, 16006 states have (on average 1.140197425965263) internal successors, (18250), 16006 states have internal predecessors, (18250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:02,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16007 states to 16007 states and 18250 transitions. [2022-01-10 00:16:02,409 INFO L78 Accepts]: Start accepts. Automaton has 16007 states and 18250 transitions. Word has length 500 [2022-01-10 00:16:02,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:16:02,409 INFO L470 AbstractCegarLoop]: Abstraction has 16007 states and 18250 transitions. [2022-01-10 00:16:02,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:02,409 INFO L276 IsEmpty]: Start isEmpty. Operand 16007 states and 18250 transitions. [2022-01-10 00:16:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2022-01-10 00:16:02,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:16:02,413 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:16:02,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:16:02,413 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:16:02,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:16:02,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1989952700, now seen corresponding path program 1 times [2022-01-10 00:16:02,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:16:02,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478791223] [2022-01-10 00:16:02,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:16:02,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:16:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:16:02,537 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 431 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-01-10 00:16:02,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:16:02,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478791223] [2022-01-10 00:16:02,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478791223] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:16:02,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:16:02,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:16:02,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923766322] [2022-01-10 00:16:02,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:16:02,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:16:02,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:16:02,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:16:02,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:16:02,538 INFO L87 Difference]: Start difference. First operand 16007 states and 18250 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:04,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:16:04,147 INFO L93 Difference]: Finished difference Result 39511 states and 45421 transitions. [2022-01-10 00:16:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:16:04,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 539 [2022-01-10 00:16:04,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:16:04,196 INFO L225 Difference]: With dead ends: 39511 [2022-01-10 00:16:04,196 INFO L226 Difference]: Without dead ends: 23805 [2022-01-10 00:16:04,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:16:04,206 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 246 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:16:04,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 597 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:16:04,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23805 states. [2022-01-10 00:16:04,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23805 to 23187. [2022-01-10 00:16:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23187 states, 23186 states have (on average 1.1288708703527992) internal successors, (26174), 23186 states have internal predecessors, (26174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:04,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23187 states to 23187 states and 26174 transitions. [2022-01-10 00:16:04,394 INFO L78 Accepts]: Start accepts. Automaton has 23187 states and 26174 transitions. Word has length 539 [2022-01-10 00:16:04,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:16:04,395 INFO L470 AbstractCegarLoop]: Abstraction has 23187 states and 26174 transitions. [2022-01-10 00:16:04,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:04,395 INFO L276 IsEmpty]: Start isEmpty. Operand 23187 states and 26174 transitions. [2022-01-10 00:16:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2022-01-10 00:16:04,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:16:04,401 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:16:04,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 00:16:04,401 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:16:04,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:16:04,402 INFO L85 PathProgramCache]: Analyzing trace with hash -461697382, now seen corresponding path program 1 times [2022-01-10 00:16:04,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:16:04,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691932142] [2022-01-10 00:16:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:16:04,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:16:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:16:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 565 proven. 39 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-01-10 00:16:04,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:16:04,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691932142] [2022-01-10 00:16:04,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691932142] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:16:04,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120536295] [2022-01-10 00:16:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:16:04,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:16:04,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:16:04,545 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 00:16:04,561 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 00:16:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:16:04,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:16:04,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:16:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2022-01-10 00:16:05,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:16:05,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120536295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:16:05,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:16:05,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-01-10 00:16:05,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355458428] [2022-01-10 00:16:05,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:16:05,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:16:05,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:16:05,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:16:05,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:16:05,533 INFO L87 Difference]: Start difference. First operand 23187 states and 26174 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:07,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:16:07,093 INFO L93 Difference]: Finished difference Result 49062 states and 55657 transitions. [2022-01-10 00:16:07,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:16:07,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 579 [2022-01-10 00:16:07,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:16:07,129 INFO L225 Difference]: With dead ends: 49062 [2022-01-10 00:16:07,129 INFO L226 Difference]: Without dead ends: 26176 [2022-01-10 00:16:07,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:16:07,145 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 364 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:16:07,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 446 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:16:07,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26176 states. [2022-01-10 00:16:07,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26176 to 18639. [2022-01-10 00:16:07,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18639 states, 18638 states have (on average 1.1159459169438781) internal successors, (20799), 18638 states have internal predecessors, (20799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18639 states to 18639 states and 20799 transitions. [2022-01-10 00:16:07,331 INFO L78 Accepts]: Start accepts. Automaton has 18639 states and 20799 transitions. Word has length 579 [2022-01-10 00:16:07,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:16:07,332 INFO L470 AbstractCegarLoop]: Abstraction has 18639 states and 20799 transitions. [2022-01-10 00:16:07,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:07,332 INFO L276 IsEmpty]: Start isEmpty. Operand 18639 states and 20799 transitions. [2022-01-10 00:16:07,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2022-01-10 00:16:07,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:16:07,339 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:07,369 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 00:16:07,556 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,SelfDestructingSolverStorable13 [2022-01-10 00:16:07,556 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:16:07,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:16:07,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1902678979, now seen corresponding path program 1 times [2022-01-10 00:16:07,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:16:07,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633202463] [2022-01-10 00:16:07,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:16:07,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:16:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:16:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 437 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-01-10 00:16:07,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:16:07,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633202463] [2022-01-10 00:16:07,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633202463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:16:07,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:16:07,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:16:07,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918812561] [2022-01-10 00:16:07,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:16:07,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:16:07,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:16:07,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:16:07,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:16:07,852 INFO L87 Difference]: Start difference. First operand 18639 states and 20799 transitions. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:09,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:16:09,296 INFO L93 Difference]: Finished difference Result 45951 states and 51399 transitions. [2022-01-10 00:16:09,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:16:09,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 613 [2022-01-10 00:16:09,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:16:09,325 INFO L225 Difference]: With dead ends: 45951 [2022-01-10 00:16:09,326 INFO L226 Difference]: Without dead ends: 24623 [2022-01-10 00:16:09,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:16:09,342 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 181 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:16:09,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 525 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:16:09,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24623 states. [2022-01-10 00:16:09,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24623 to 21932. [2022-01-10 00:16:09,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21932 states, 21931 states have (on average 1.0763303086954539) internal successors, (23605), 21931 states have internal predecessors, (23605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:09,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21932 states to 21932 states and 23605 transitions. [2022-01-10 00:16:09,518 INFO L78 Accepts]: Start accepts. Automaton has 21932 states and 23605 transitions. Word has length 613 [2022-01-10 00:16:09,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:16:09,519 INFO L470 AbstractCegarLoop]: Abstraction has 21932 states and 23605 transitions. [2022-01-10 00:16:09,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:09,519 INFO L276 IsEmpty]: Start isEmpty. Operand 21932 states and 23605 transitions. [2022-01-10 00:16:09,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2022-01-10 00:16:09,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:16:09,527 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:16:09,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:16:09,527 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:16:09,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:16:09,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1415962773, now seen corresponding path program 1 times [2022-01-10 00:16:09,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:16:09,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422957466] [2022-01-10 00:16:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:16:09,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:16:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:16:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 223 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:16:09,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:16:09,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422957466] [2022-01-10 00:16:09,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422957466] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:16:09,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787205064] [2022-01-10 00:16:09,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:16:09,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:16:09,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:16:09,892 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 00:16:09,895 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 00:16:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:16:10,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 00:16:10,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:16:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 473 proven. 49 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-01-10 00:16:13,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:16:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 473 proven. 49 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-01-10 00:16:16,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787205064] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:16:16,624 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:16:16,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-01-10 00:16:16,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306796377] [2022-01-10 00:16:16,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:16:16,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 00:16:16,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:16:16,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 00:16:16,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-01-10 00:16:16,626 INFO L87 Difference]: Start difference. First operand 21932 states and 23605 transitions. Second operand has 14 states, 14 states have (on average 114.85714285714286) internal successors, (1608), 14 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:27,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:16:27,865 INFO L93 Difference]: Finished difference Result 85255 states and 91268 transitions. [2022-01-10 00:16:27,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-10 00:16:27,866 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 114.85714285714286) internal successors, (1608), 14 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 723 [2022-01-10 00:16:27,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:16:27,929 INFO L225 Difference]: With dead ends: 85255 [2022-01-10 00:16:27,929 INFO L226 Difference]: Without dead ends: 62738 [2022-01-10 00:16:27,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1560 GetRequests, 1483 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1239, Invalid=4923, Unknown=0, NotChecked=0, Total=6162 [2022-01-10 00:16:27,946 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 11399 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 18409 mSolverCounterSat, 3204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11399 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 21613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3204 IncrementalHoareTripleChecker+Valid, 18409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:16:27,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11399 Valid, 521 Invalid, 21613 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3204 Valid, 18409 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-01-10 00:16:27,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62738 states. [2022-01-10 00:16:28,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62738 to 28208. [2022-01-10 00:16:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28208 states, 28207 states have (on average 1.0645938951324139) internal successors, (30029), 28207 states have internal predecessors, (30029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:28,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28208 states to 28208 states and 30029 transitions. [2022-01-10 00:16:28,612 INFO L78 Accepts]: Start accepts. Automaton has 28208 states and 30029 transitions. Word has length 723 [2022-01-10 00:16:28,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:16:28,613 INFO L470 AbstractCegarLoop]: Abstraction has 28208 states and 30029 transitions. [2022-01-10 00:16:28,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.85714285714286) internal successors, (1608), 14 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:28,613 INFO L276 IsEmpty]: Start isEmpty. Operand 28208 states and 30029 transitions. [2022-01-10 00:16:28,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2022-01-10 00:16:28,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:16:28,623 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:28,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 00:16:28,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:16:28,840 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:16:28,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:16:28,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1023642737, now seen corresponding path program 1 times [2022-01-10 00:16:28,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:16:28,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40491692] [2022-01-10 00:16:28,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:16:28,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:16:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:16:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 478 proven. 357 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-01-10 00:16:29,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:16:29,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40491692] [2022-01-10 00:16:29,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40491692] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:16:29,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943241878] [2022-01-10 00:16:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:16:29,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:16:29,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:16:29,153 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 00:16:29,187 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 00:16:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:16:29,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:16:29,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:16:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2022-01-10 00:16:30,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:16:30,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943241878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:16:30,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:16:30,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-01-10 00:16:30,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996014494] [2022-01-10 00:16:30,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:16:30,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:16:30,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:16:30,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:16:30,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:16:30,328 INFO L87 Difference]: Start difference. First operand 28208 states and 30029 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:31,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:16:31,538 INFO L93 Difference]: Finished difference Result 56112 states and 59747 transitions. [2022-01-10 00:16:31,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:16:31,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 781 [2022-01-10 00:16:31,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:16:31,566 INFO L225 Difference]: With dead ends: 56112 [2022-01-10 00:16:31,566 INFO L226 Difference]: Without dead ends: 27906 [2022-01-10 00:16:31,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 782 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:16:31,582 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 279 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:16:31,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 558 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 00:16:31,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27906 states. [2022-01-10 00:16:31,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27906 to 27308. [2022-01-10 00:16:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27308 states, 27307 states have (on average 1.0451898780532465) internal successors, (28541), 27307 states have internal predecessors, (28541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27308 states to 27308 states and 28541 transitions. [2022-01-10 00:16:31,917 INFO L78 Accepts]: Start accepts. Automaton has 27308 states and 28541 transitions. Word has length 781 [2022-01-10 00:16:31,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:16:31,917 INFO L470 AbstractCegarLoop]: Abstraction has 27308 states and 28541 transitions. [2022-01-10 00:16:31,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:31,917 INFO L276 IsEmpty]: Start isEmpty. Operand 27308 states and 28541 transitions. [2022-01-10 00:16:31,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2022-01-10 00:16:31,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:16:31,929 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:16:31,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-10 00:16:32,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-10 00:16:32,147 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:16:32,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:16:32,148 INFO L85 PathProgramCache]: Analyzing trace with hash -748444098, now seen corresponding path program 1 times [2022-01-10 00:16:32,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:16:32,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005002977] [2022-01-10 00:16:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:16:32,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:16:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:16:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2022-01-10 00:16:32,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:16:32,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005002977] [2022-01-10 00:16:32,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005002977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:16:32,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:16:32,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:16:32,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930429490] [2022-01-10 00:16:32,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:16:32,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:16:32,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:16:32,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:16:32,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:16:32,575 INFO L87 Difference]: Start difference. First operand 27308 states and 28541 transitions. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:34,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:16:34,113 INFO L93 Difference]: Finished difference Result 59402 states and 62064 transitions. [2022-01-10 00:16:34,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:16:34,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 821 [2022-01-10 00:16:34,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:16:34,145 INFO L225 Difference]: With dead ends: 59402 [2022-01-10 00:16:34,145 INFO L226 Difference]: Without dead ends: 32096 [2022-01-10 00:16:34,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:16:34,159 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 293 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:16:34,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 462 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:16:34,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32096 states. [2022-01-10 00:16:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32096 to 29096. [2022-01-10 00:16:34,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29096 states, 29095 states have (on average 1.0427564873689636) internal successors, (30339), 29095 states have internal predecessors, (30339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:34,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29096 states to 29096 states and 30339 transitions. [2022-01-10 00:16:34,520 INFO L78 Accepts]: Start accepts. Automaton has 29096 states and 30339 transitions. Word has length 821 [2022-01-10 00:16:34,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:16:34,521 INFO L470 AbstractCegarLoop]: Abstraction has 29096 states and 30339 transitions. [2022-01-10 00:16:34,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:34,521 INFO L276 IsEmpty]: Start isEmpty. Operand 29096 states and 30339 transitions. [2022-01-10 00:16:34,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2022-01-10 00:16:34,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:16:34,537 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:16:34,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 00:16:34,538 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:16:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:16:34,538 INFO L85 PathProgramCache]: Analyzing trace with hash -215175952, now seen corresponding path program 1 times [2022-01-10 00:16:34,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:16:34,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41857592] [2022-01-10 00:16:34,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:16:34,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:16:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:16:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 684 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-01-10 00:16:34,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:16:34,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41857592] [2022-01-10 00:16:34,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41857592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:16:34,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:16:34,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:16:34,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438248982] [2022-01-10 00:16:34,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:16:34,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:16:34,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:16:34,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:16:34,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:16:34,867 INFO L87 Difference]: Start difference. First operand 29096 states and 30339 transitions. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:36,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:16:36,215 INFO L93 Difference]: Finished difference Result 63289 states and 65976 transitions. [2022-01-10 00:16:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:16:36,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 887 [2022-01-10 00:16:36,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:16:36,247 INFO L225 Difference]: With dead ends: 63289 [2022-01-10 00:16:36,247 INFO L226 Difference]: Without dead ends: 34494 [2022-01-10 00:16:36,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:16:36,253 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 348 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:16:36,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 141 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 00:16:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34494 states. [2022-01-10 00:16:36,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34494 to 31486. [2022-01-10 00:16:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31486 states, 31485 states have (on average 1.0404319517230427) internal successors, (32758), 31485 states have internal predecessors, (32758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:36,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31486 states to 31486 states and 32758 transitions. [2022-01-10 00:16:36,671 INFO L78 Accepts]: Start accepts. Automaton has 31486 states and 32758 transitions. Word has length 887 [2022-01-10 00:16:36,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:16:36,672 INFO L470 AbstractCegarLoop]: Abstraction has 31486 states and 32758 transitions. [2022-01-10 00:16:36,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:36,672 INFO L276 IsEmpty]: Start isEmpty. Operand 31486 states and 32758 transitions. [2022-01-10 00:16:36,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2022-01-10 00:16:36,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:16:36,689 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:16:36,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 00:16:36,689 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:16:36,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:16:36,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1730290980, now seen corresponding path program 1 times [2022-01-10 00:16:36,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:16:36,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468326317] [2022-01-10 00:16:36,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:16:36,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:16:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:16:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 748 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-01-10 00:16:36,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:16:36,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468326317] [2022-01-10 00:16:36,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468326317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:16:36,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:16:36,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:16:36,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588707625] [2022-01-10 00:16:36,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:16:37,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:16:37,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:16:37,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:16:37,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:16:37,093 INFO L87 Difference]: Start difference. First operand 31486 states and 32758 transitions. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:38,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:16:38,338 INFO L93 Difference]: Finished difference Result 67172 states and 69877 transitions. [2022-01-10 00:16:38,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:16:38,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 900 [2022-01-10 00:16:38,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:16:38,384 INFO L225 Difference]: With dead ends: 67172 [2022-01-10 00:16:38,384 INFO L226 Difference]: Without dead ends: 35987 [2022-01-10 00:16:38,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:16:38,406 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 32 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:16:38,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 575 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 00:16:38,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35987 states. [2022-01-10 00:16:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35987 to 31199. [2022-01-10 00:16:38,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31199 states, 31198 states have (on average 1.0378870440412846) internal successors, (32380), 31198 states have internal predecessors, (32380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:38,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31199 states to 31199 states and 32380 transitions. [2022-01-10 00:16:38,805 INFO L78 Accepts]: Start accepts. Automaton has 31199 states and 32380 transitions. Word has length 900 [2022-01-10 00:16:38,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:16:38,806 INFO L470 AbstractCegarLoop]: Abstraction has 31199 states and 32380 transitions. [2022-01-10 00:16:38,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:38,806 INFO L276 IsEmpty]: Start isEmpty. Operand 31199 states and 32380 transitions. [2022-01-10 00:16:38,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 938 [2022-01-10 00:16:38,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:16:38,921 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:16:38,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 00:16:38,922 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:16:38,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:16:38,922 INFO L85 PathProgramCache]: Analyzing trace with hash -242622809, now seen corresponding path program 1 times [2022-01-10 00:16:38,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:16:38,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780767849] [2022-01-10 00:16:38,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:16:38,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:16:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:16:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1843 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2022-01-10 00:16:39,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:16:39,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780767849] [2022-01-10 00:16:39,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780767849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:16:39,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:16:39,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:16:39,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912229490] [2022-01-10 00:16:39,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:16:39,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:16:39,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:16:39,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:16:39,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:16:39,170 INFO L87 Difference]: Start difference. First operand 31199 states and 32380 transitions. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:40,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:16:40,849 INFO L93 Difference]: Finished difference Result 69581 states and 72155 transitions. [2022-01-10 00:16:40,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:16:40,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 937 [2022-01-10 00:16:40,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:16:40,883 INFO L225 Difference]: With dead ends: 69581 [2022-01-10 00:16:40,883 INFO L226 Difference]: Without dead ends: 38683 [2022-01-10 00:16:40,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:16:40,903 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 904 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:16:40,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 207 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:16:40,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38683 states. [2022-01-10 00:16:41,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38683 to 31796. [2022-01-10 00:16:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31796 states, 31795 states have (on average 1.0351942129265608) internal successors, (32914), 31795 states have internal predecessors, (32914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31796 states to 31796 states and 32914 transitions. [2022-01-10 00:16:41,351 INFO L78 Accepts]: Start accepts. Automaton has 31796 states and 32914 transitions. Word has length 937 [2022-01-10 00:16:41,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:16:41,352 INFO L470 AbstractCegarLoop]: Abstraction has 31796 states and 32914 transitions. [2022-01-10 00:16:41,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:16:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 31796 states and 32914 transitions. [2022-01-10 00:16:41,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2022-01-10 00:16:41,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:16:41,370 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 00:16:41,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 00:16:41,370 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:16:41,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:16:41,371 INFO L85 PathProgramCache]: Analyzing trace with hash -410336917, now seen corresponding path program 1 times [2022-01-10 00:16:41,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:16:41,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241129973] [2022-01-10 00:16:41,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:16:41,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:16:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:16:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 452 proven. 796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:16:41,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:16:41,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241129973] [2022-01-10 00:16:41,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241129973] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:16:41,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471135084] [2022-01-10 00:16:41,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:16:41,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:16:41,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:16:41,898 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:16:41,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process