/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_Bitvector.epf -i ../../../trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:06:23,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:06:23,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:06:23,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:06:23,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:06:23,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:06:23,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:06:23,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:06:23,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:06:23,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:06:23,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:06:23,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:06:23,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:06:23,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:06:23,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:06:23,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:06:23,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:06:23,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:06:23,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:06:23,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:06:23,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:06:23,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:06:23,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:06:23,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:06:23,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 08:06:23,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:06:23,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:06:23,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:06:23,781 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 08:06:23,800 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:06:23,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:06:23,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:06:23,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:06:23,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:06:23,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:06:23,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:06:23,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:06:23,803 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:06:23,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:06:23,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:06:23,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:06:23,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:06:23,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:06:23,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:06:23,805 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:06:23,805 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:06:23,805 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:06:23,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:06:23,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:06:23,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:06:23,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:06:23,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:06:23,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:06:23,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:06:23,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:06:23,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:06:23,807 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:06:23,807 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:06:23,807 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:06:23,808 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:06:23,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:06:23,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:06:23,808 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:06:24,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:06:24,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:06:24,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:06:24,082 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:06:24,083 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:06:24,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c [2022-01-10 08:06:24,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e1779bf/c87a40f10aa143d2aba39ccf29c64e05/FLAGe2ed498ab [2022-01-10 08:06:24,897 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:06:24,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c [2022-01-10 08:06:24,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e1779bf/c87a40f10aa143d2aba39ccf29c64e05/FLAGe2ed498ab [2022-01-10 08:06:24,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e1779bf/c87a40f10aa143d2aba39ccf29c64e05 [2022-01-10 08:06:24,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:06:24,981 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:06:24,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:06:24,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:06:24,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:06:24,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:06:24" (1/1) ... [2022-01-10 08:06:24,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bef283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:06:24, skipping insertion in model container [2022-01-10 08:06:24,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:06:24" (1/1) ... [2022-01-10 08:06:24,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:06:25,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:06:25,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c[11640,11653] [2022-01-10 08:06:25,426 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c[17195,17208] [2022-01-10 08:06:26,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:06:26,115 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:06:26,157 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c[11640,11653] [2022-01-10 08:06:26,166 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c[17195,17208] [2022-01-10 08:06:26,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:06:26,560 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:06:26,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:06:26 WrapperNode [2022-01-10 08:06:26,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:06:26,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:06:26,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:06:26,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:06:26,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:06:26" (1/1) ... [2022-01-10 08:06:26,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:06:26" (1/1) ... [2022-01-10 08:06:26,843 INFO L137 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5065 [2022-01-10 08:06:26,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:06:26,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:06:26,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:06:26,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:06:26,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:06:26" (1/1) ... [2022-01-10 08:06:26,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:06:26" (1/1) ... [2022-01-10 08:06:26,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:06:26" (1/1) ... [2022-01-10 08:06:26,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:06:26" (1/1) ... [2022-01-10 08:06:27,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:06:26" (1/1) ... [2022-01-10 08:06:27,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:06:26" (1/1) ... [2022-01-10 08:06:27,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:06:26" (1/1) ... [2022-01-10 08:06:27,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:06:27,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:06:27,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:06:27,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:06:27,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:06:26" (1/1) ... [2022-01-10 08:06:27,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:06:27,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:06:27,241 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 08:06:27,250 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 08:06:27,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:06:27,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:06:27,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:06:27,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:06:27,424 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:06:27,426 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:06:52,606 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:06:52,623 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:06:52,624 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 08:06:52,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:06:52 BoogieIcfgContainer [2022-01-10 08:06:52,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:06:52,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:06:52,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:06:52,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:06:52,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:06:24" (1/3) ... [2022-01-10 08:06:52,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a61b91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:06:52, skipping insertion in model container [2022-01-10 08:06:52,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:06:26" (2/3) ... [2022-01-10 08:06:52,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a61b91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:06:52, skipping insertion in model container [2022-01-10 08:06:52,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:06:52" (3/3) ... [2022-01-10 08:06:52,635 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c [2022-01-10 08:06:52,641 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:06:52,641 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:06:52,702 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:06:52,714 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 08:06:52,715 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:06:52,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 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 08:06:52,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 08:06:52,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:06:52,769 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] [2022-01-10 08:06:52,770 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:06:52,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:06:52,775 INFO L85 PathProgramCache]: Analyzing trace with hash -441366565, now seen corresponding path program 1 times [2022-01-10 08:06:52,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:06:52,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533968291] [2022-01-10 08:06:52,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:06:52,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:06:52,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:06:52,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:06:52,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 08:06:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:06:52,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 08:06:52,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:06:53,081 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 08:06:53,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:06:53,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:06:53,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533968291] [2022-01-10 08:06:53,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533968291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:06:53,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:06:53,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:06:53,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212049716] [2022-01-10 08:06:53,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:06:53,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 08:06:53,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:06:53,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 08:06:53,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:06:53,121 INFO L87 Difference]: Start difference. First operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 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 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 08:06:53,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:06:53,204 INFO L93 Difference]: Finished difference Result 1781 states and 3374 transitions. [2022-01-10 08:06:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 08:06:53,206 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2022-01-10 08:06:53,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:06:53,227 INFO L225 Difference]: With dead ends: 1781 [2022-01-10 08:06:53,227 INFO L226 Difference]: Without dead ends: 843 [2022-01-10 08:06:53,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:06:53,242 INFO L933 BasicCegarLoop]: 1656 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:06:53,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:06:53,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-01-10 08:06:53,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2022-01-10 08:06:53,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8894173602853745) internal successors, (1589), 842 states have internal predecessors, (1589), 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 08:06:53,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1589 transitions. [2022-01-10 08:06:53,339 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1589 transitions. Word has length 34 [2022-01-10 08:06:53,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:06:53,340 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1589 transitions. [2022-01-10 08:06:53,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 08:06:53,341 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1589 transitions. [2022-01-10 08:06:53,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 08:06:53,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:06:53,346 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] [2022-01-10 08:06:53,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 08:06:53,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:06:53,559 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:06:53,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:06:53,560 INFO L85 PathProgramCache]: Analyzing trace with hash -950839655, now seen corresponding path program 1 times [2022-01-10 08:06:53,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:06:53,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525331484] [2022-01-10 08:06:53,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:06:53,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:06:53,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:06:53,562 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:06:53,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 08:06:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:06:53,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:06:53,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:06:53,821 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 08:06:53,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:06:53,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:06:53,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525331484] [2022-01-10 08:06:53,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525331484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:06:53,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:06:53,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:06:53,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387176938] [2022-01-10 08:06:53,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:06:53,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:06:53,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:06:53,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:06:53,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:06:53,825 INFO L87 Difference]: Start difference. First operand 843 states and 1589 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 08:06:53,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:06:53,970 INFO L93 Difference]: Finished difference Result 899 states and 1675 transitions. [2022-01-10 08:06:53,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:06:53,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 34 [2022-01-10 08:06:53,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:06:53,975 INFO L225 Difference]: With dead ends: 899 [2022-01-10 08:06:53,975 INFO L226 Difference]: Without dead ends: 843 [2022-01-10 08:06:53,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:06:53,977 INFO L933 BasicCegarLoop]: 1587 mSDtfsCounter, 3 mSDsluCounter, 4727 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6314 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:06:53,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6314 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:06:53,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-01-10 08:06:53,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2022-01-10 08:06:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8525564803804995) internal successors, (1558), 842 states have internal predecessors, (1558), 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 08:06:53,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1558 transitions. [2022-01-10 08:06:54,000 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1558 transitions. Word has length 34 [2022-01-10 08:06:54,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:06:54,003 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1558 transitions. [2022-01-10 08:06:54,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 08:06:54,009 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1558 transitions. [2022-01-10 08:06:54,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 08:06:54,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:06:54,014 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] [2022-01-10 08:06:54,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 08:06:54,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:06:54,223 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:06:54,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:06:54,224 INFO L85 PathProgramCache]: Analyzing trace with hash 694349877, now seen corresponding path program 1 times [2022-01-10 08:06:54,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:06:54,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120894936] [2022-01-10 08:06:54,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:06:54,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:06:54,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:06:54,227 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:06:54,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 08:06:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:06:54,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:06:54,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:06:54,569 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 08:06:54,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:06:54,569 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:06:54,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120894936] [2022-01-10 08:06:54,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120894936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:06:54,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:06:54,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:06:54,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577857749] [2022-01-10 08:06:54,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:06:54,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:06:54,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:06:54,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:06:54,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:06:54,572 INFO L87 Difference]: Start difference. First operand 843 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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 08:07:26,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:07:26,954 INFO L93 Difference]: Finished difference Result 2347 states and 4431 transitions. [2022-01-10 08:07:26,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:07:26,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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 48 [2022-01-10 08:07:26,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:07:26,963 INFO L225 Difference]: With dead ends: 2347 [2022-01-10 08:07:26,963 INFO L226 Difference]: Without dead ends: 1594 [2022-01-10 08:07:26,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 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 08:07:26,966 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 850 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:07:26,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 343 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 32.2s Time] [2022-01-10 08:07:26,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2022-01-10 08:07:27,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1594. [2022-01-10 08:07:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1592 states have (on average 1.7518844221105527) internal successors, (2789), 1593 states have internal predecessors, (2789), 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 08:07:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2789 transitions. [2022-01-10 08:07:27,022 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2789 transitions. Word has length 48 [2022-01-10 08:07:27,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:07:27,024 INFO L470 AbstractCegarLoop]: Abstraction has 1594 states and 2789 transitions. [2022-01-10 08:07:27,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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 08:07:27,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2789 transitions. [2022-01-10 08:07:27,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 08:07:27,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:07:27,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:07:27,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 08:07:27,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:07:27,226 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:07:27,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:07:27,226 INFO L85 PathProgramCache]: Analyzing trace with hash -695028240, now seen corresponding path program 1 times [2022-01-10 08:07:27,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:07:27,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530566376] [2022-01-10 08:07:27,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:07:27,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:07:27,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:07:27,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:07:27,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 08:07:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:07:27,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:07:27,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:07:27,556 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 08:07:27,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:07:27,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:07:27,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530566376] [2022-01-10 08:07:27,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530566376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:07:27,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:07:27,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:07:27,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990524244] [2022-01-10 08:07:27,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:07:27,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:07:27,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:07:27,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:07:27,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:07:27,559 INFO L87 Difference]: Start difference. First operand 1594 states and 2789 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 08:07:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:07:27,604 INFO L93 Difference]: Finished difference Result 1692 states and 2943 transitions. [2022-01-10 08:07:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:07:27,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-01-10 08:07:27,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:07:27,612 INFO L225 Difference]: With dead ends: 1692 [2022-01-10 08:07:27,612 INFO L226 Difference]: Without dead ends: 1640 [2022-01-10 08:07:27,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 08:07:27,614 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 1511 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:07:27,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 1706 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:07:27,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2022-01-10 08:07:27,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1638. [2022-01-10 08:07:27,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1636 states have (on average 1.7475550122249388) internal successors, (2859), 1637 states have internal predecessors, (2859), 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 08:07:27,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2859 transitions. [2022-01-10 08:07:27,659 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2859 transitions. Word has length 64 [2022-01-10 08:07:27,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:07:27,660 INFO L470 AbstractCegarLoop]: Abstraction has 1638 states and 2859 transitions. [2022-01-10 08:07:27,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 08:07:27,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2859 transitions. [2022-01-10 08:07:27,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 08:07:27,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:07:27,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:07:27,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 08:07:27,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:07:27,872 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:07:27,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:07:27,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1440610970, now seen corresponding path program 1 times [2022-01-10 08:07:27,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:07:27,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202629877] [2022-01-10 08:07:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:07:27,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:07:27,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:07:27,875 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:07:27,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 08:07:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:07:27,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:07:27,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:07:28,082 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 08:07:28,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:07:28,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:07:28,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202629877] [2022-01-10 08:07:28,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202629877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:07:28,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:07:28,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:07:28,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749086791] [2022-01-10 08:07:28,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:07:28,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:07:28,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:07:28,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:07:28,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:07:28,085 INFO L87 Difference]: Start difference. First operand 1638 states and 2859 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 08:07:28,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:07:28,118 INFO L93 Difference]: Finished difference Result 1818 states and 3143 transitions. [2022-01-10 08:07:28,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:07:28,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-01-10 08:07:28,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:07:28,126 INFO L225 Difference]: With dead ends: 1818 [2022-01-10 08:07:28,126 INFO L226 Difference]: Without dead ends: 1722 [2022-01-10 08:07:28,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 08:07:28,127 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 1507 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:07:28,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1705 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:07:28,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2022-01-10 08:07:28,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2022-01-10 08:07:28,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.739231664726426) internal successors, (2988), 1719 states have internal predecessors, (2988), 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 08:07:28,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2988 transitions. [2022-01-10 08:07:28,171 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2988 transitions. Word has length 64 [2022-01-10 08:07:28,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:07:28,172 INFO L470 AbstractCegarLoop]: Abstraction has 1720 states and 2988 transitions. [2022-01-10 08:07:28,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 08:07:28,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2988 transitions. [2022-01-10 08:07:28,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 08:07:28,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:07:28,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:07:28,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 08:07:28,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:07:28,383 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:07:28,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:07:28,384 INFO L85 PathProgramCache]: Analyzing trace with hash 914325468, now seen corresponding path program 1 times [2022-01-10 08:07:28,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:07:28,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793279470] [2022-01-10 08:07:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:07:28,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:07:28,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:07:28,386 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:07:28,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 08:07:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:07:28,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:07:28,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:07:28,628 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 08:07:28,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:07:28,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:07:28,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793279470] [2022-01-10 08:07:28,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793279470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:07:28,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:07:28,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:07:28,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613041963] [2022-01-10 08:07:28,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:07:28,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:07:28,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:07:28,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:07:28,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:07:28,631 INFO L87 Difference]: Start difference. First operand 1720 states and 2988 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 08:07:28,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:07:28,664 INFO L93 Difference]: Finished difference Result 2052 states and 3510 transitions. [2022-01-10 08:07:28,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:07:28,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-01-10 08:07:28,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:07:28,675 INFO L225 Difference]: With dead ends: 2052 [2022-01-10 08:07:28,676 INFO L226 Difference]: Without dead ends: 1874 [2022-01-10 08:07:28,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 08:07:28,679 INFO L933 BasicCegarLoop]: 1616 mSDtfsCounter, 1503 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:07:28,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1503 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:07:28,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2022-01-10 08:07:28,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1872. [2022-01-10 08:07:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1870 states have (on average 1.7240641711229947) internal successors, (3224), 1871 states have internal predecessors, (3224), 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 08:07:28,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 3224 transitions. [2022-01-10 08:07:28,787 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 3224 transitions. Word has length 64 [2022-01-10 08:07:28,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:07:28,787 INFO L470 AbstractCegarLoop]: Abstraction has 1872 states and 3224 transitions. [2022-01-10 08:07:28,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 08:07:28,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 3224 transitions. [2022-01-10 08:07:28,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 08:07:28,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:07:28,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:07:28,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 08:07:28,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:07:28,998 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:07:28,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:07:28,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1701027568, now seen corresponding path program 1 times [2022-01-10 08:07:28,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:07:28,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059998509] [2022-01-10 08:07:29,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:07:29,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:07:29,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:07:29,001 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:07:29,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 08:07:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:07:29,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:07:29,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:07:29,714 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 08:07:29,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:07:29,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:07:29,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059998509] [2022-01-10 08:07:29,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059998509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:07:29,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:07:29,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:07:29,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903258979] [2022-01-10 08:07:29,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:07:29,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:07:29,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:07:29,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:07:29,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:07:29,716 INFO L87 Difference]: Start difference. First operand 1872 states and 3224 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 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 08:07:29,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:07:29,835 INFO L93 Difference]: Finished difference Result 2213 states and 3755 transitions. [2022-01-10 08:07:29,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:07:29,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 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 64 [2022-01-10 08:07:29,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:07:29,843 INFO L225 Difference]: With dead ends: 2213 [2022-01-10 08:07:29,843 INFO L226 Difference]: Without dead ends: 1883 [2022-01-10 08:07:29,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:07:29,845 INFO L933 BasicCegarLoop]: 1547 mSDtfsCounter, 1468 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 4682 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:07:29,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1468 Valid, 4682 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2022-01-10 08:07:29,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2022-01-10 08:07:29,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1883. [2022-01-10 08:07:29,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1881 states have (on average 1.7208931419457736) internal successors, (3237), 1882 states have internal predecessors, (3237), 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 08:07:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 3237 transitions. [2022-01-10 08:07:29,888 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 3237 transitions. Word has length 64 [2022-01-10 08:07:29,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:07:29,888 INFO L470 AbstractCegarLoop]: Abstraction has 1883 states and 3237 transitions. [2022-01-10 08:07:29,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 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 08:07:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 3237 transitions. [2022-01-10 08:07:29,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 08:07:29,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:07:29,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:07:29,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 08:07:30,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:07:30,099 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:07:30,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:07:30,100 INFO L85 PathProgramCache]: Analyzing trace with hash -679959214, now seen corresponding path program 1 times [2022-01-10 08:07:30,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:07:30,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564454724] [2022-01-10 08:07:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:07:30,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:07:30,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:07:30,102 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:07:30,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 08:07:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:07:30,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:07:30,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:07:30,324 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 08:07:30,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:07:30,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:07:30,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564454724] [2022-01-10 08:07:30,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564454724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:07:30,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:07:30,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:07:30,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802222858] [2022-01-10 08:07:30,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:07:30,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:07:30,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:07:30,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:07:30,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:07:30,327 INFO L87 Difference]: Start difference. First operand 1883 states and 3237 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 08:07:30,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:07:30,372 INFO L93 Difference]: Finished difference Result 2495 states and 4191 transitions. [2022-01-10 08:07:30,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:07:30,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-01-10 08:07:30,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:07:30,381 INFO L225 Difference]: With dead ends: 2495 [2022-01-10 08:07:30,381 INFO L226 Difference]: Without dead ends: 2165 [2022-01-10 08:07:30,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 08:07:30,387 INFO L933 BasicCegarLoop]: 1611 mSDtfsCounter, 1499 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:07:30,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 1703 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:07:30,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2022-01-10 08:07:30,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2163. [2022-01-10 08:07:30,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2161 states have (on average 1.6959740860712633) internal successors, (3665), 2162 states have internal predecessors, (3665), 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 08:07:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3665 transitions. [2022-01-10 08:07:30,439 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3665 transitions. Word has length 64 [2022-01-10 08:07:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:07:30,440 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 3665 transitions. [2022-01-10 08:07:30,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 08:07:30,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3665 transitions. [2022-01-10 08:07:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 08:07:30,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:07:30,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:07:30,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 08:07:30,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:07:30,650 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:07:30,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:07:30,651 INFO L85 PathProgramCache]: Analyzing trace with hash -84000634, now seen corresponding path program 1 times [2022-01-10 08:07:30,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:07:30,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023966623] [2022-01-10 08:07:30,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:07:30,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:07:30,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:07:30,652 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:07:30,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 08:07:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:07:30,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:07:30,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:07:31,300 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 08:07:31,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:07:31,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:07:31,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023966623] [2022-01-10 08:07:31,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023966623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:07:31,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:07:31,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:07:31,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063782881] [2022-01-10 08:07:31,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:07:31,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:07:31,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:07:31,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:07:31,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:07:31,302 INFO L87 Difference]: Start difference. First operand 2163 states and 3665 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 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 08:07:31,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:07:31,419 INFO L93 Difference]: Finished difference Result 2777 states and 4615 transitions. [2022-01-10 08:07:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:07:31,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 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 64 [2022-01-10 08:07:31,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:07:31,428 INFO L225 Difference]: With dead ends: 2777 [2022-01-10 08:07:31,428 INFO L226 Difference]: Without dead ends: 2167 [2022-01-10 08:07:31,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:07:31,430 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 1470 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:07:31,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 3131 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-01-10 08:07:31,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2022-01-10 08:07:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 2167. [2022-01-10 08:07:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2165 states have (on average 1.694688221709007) internal successors, (3669), 2166 states have internal predecessors, (3669), 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 08:07:31,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3669 transitions. [2022-01-10 08:07:31,480 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3669 transitions. Word has length 64 [2022-01-10 08:07:31,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:07:31,480 INFO L470 AbstractCegarLoop]: Abstraction has 2167 states and 3669 transitions. [2022-01-10 08:07:31,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 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 08:07:31,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3669 transitions. [2022-01-10 08:07:31,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 08:07:31,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:07:31,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:07:31,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 08:07:31,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:07:31,690 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:07:31,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:07:31,690 INFO L85 PathProgramCache]: Analyzing trace with hash -342166072, now seen corresponding path program 1 times [2022-01-10 08:07:31,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:07:31,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722680029] [2022-01-10 08:07:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:07:31,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:07:31,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:07:31,693 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:07:31,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 08:07:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:07:31,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:07:31,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:07:31,909 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 08:07:31,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:07:31,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:07:31,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722680029] [2022-01-10 08:07:31,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722680029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:07:31,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:07:31,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:07:31,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178029223] [2022-01-10 08:07:31,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:07:31,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:07:31,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:07:31,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:07:31,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:07:31,911 INFO L87 Difference]: Start difference. First operand 2167 states and 3669 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 08:07:31,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:07:31,960 INFO L93 Difference]: Finished difference Result 3291 states and 5399 transitions. [2022-01-10 08:07:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:07:31,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-01-10 08:07:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:07:31,971 INFO L225 Difference]: With dead ends: 3291 [2022-01-10 08:07:31,972 INFO L226 Difference]: Without dead ends: 2681 [2022-01-10 08:07:31,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 08:07:31,975 INFO L933 BasicCegarLoop]: 1606 mSDtfsCounter, 1495 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:07:31,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1495 Valid, 1702 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:07:31,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-01-10 08:07:32,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2679. [2022-01-10 08:07:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2679 states, 2677 states have (on average 1.6574523720582741) internal successors, (4437), 2678 states have internal predecessors, (4437), 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 08:07:32,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2679 states to 2679 states and 4437 transitions. [2022-01-10 08:07:32,083 INFO L78 Accepts]: Start accepts. Automaton has 2679 states and 4437 transitions. Word has length 64 [2022-01-10 08:07:32,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:07:32,083 INFO L470 AbstractCegarLoop]: Abstraction has 2679 states and 4437 transitions. [2022-01-10 08:07:32,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 08:07:32,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2679 states and 4437 transitions. [2022-01-10 08:07:32,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 08:07:32,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:07:32,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:07:32,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0