/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/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:12:56,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:12:56,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:12:56,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:12:56,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:12:56,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:12:56,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:12:56,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:12:56,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:12:56,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:12:56,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:12:56,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:12:56,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:12:56,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:12:56,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:12:56,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:12:56,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:12:56,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:12:56,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:12:56,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:12:56,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:12:56,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:12:56,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:12:56,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:12:56,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:12:56,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:12:56,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:12:56,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:12:56,960 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 07:12:56,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:12:56,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:12:56,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:12:56,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:12:56,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:12:56,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:12:56,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:12:56,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:12:56,988 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:12:56,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:12:56,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:12:56,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:12:56,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:12:56,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:12:56,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:12:56,989 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:12:56,989 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:12:56,989 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:12:56,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:12:56,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:12:56,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:12:56,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:12:56,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:12:56,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:12:56,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:12:56,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:12:56,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:12:56,991 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:12:56,991 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:12:56,991 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:12:56,991 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:12:56,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:12:56,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:12:56,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:12:57,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:12:57,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:12:57,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:12:57,200 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:12:57,208 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:12:57,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 07:12:57,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a737e1f4b/0f318c8f1c154fb982547cb2e26f0a32/FLAG22d424f09 [2022-01-10 07:12:57,634 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:12:57,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 07:12:57,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a737e1f4b/0f318c8f1c154fb982547cb2e26f0a32/FLAG22d424f09 [2022-01-10 07:12:57,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a737e1f4b/0f318c8f1c154fb982547cb2e26f0a32 [2022-01-10 07:12:57,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:12:57,657 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:12:57,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:12:57,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:12:57,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:12:57,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:12:57" (1/1) ... [2022-01-10 07:12:57,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3da6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:57, skipping insertion in model container [2022-01-10 07:12:57,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:12:57" (1/1) ... [2022-01-10 07:12:57,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:12:57,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:12:57,865 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7399,7412] [2022-01-10 07:12:57,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:12:57,906 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:12:57,933 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7399,7412] [2022-01-10 07:12:57,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:12:57,977 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:12:57,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:57 WrapperNode [2022-01-10 07:12:57,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:12:57,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:12:57,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:12:57,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:12:57,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:57" (1/1) ... [2022-01-10 07:12:58,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:57" (1/1) ... [2022-01-10 07:12:58,031 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 601 [2022-01-10 07:12:58,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:12:58,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:12:58,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:12:58,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:12:58,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:57" (1/1) ... [2022-01-10 07:12:58,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:57" (1/1) ... [2022-01-10 07:12:58,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:57" (1/1) ... [2022-01-10 07:12:58,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:57" (1/1) ... [2022-01-10 07:12:58,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:57" (1/1) ... [2022-01-10 07:12:58,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:57" (1/1) ... [2022-01-10 07:12:58,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:57" (1/1) ... [2022-01-10 07:12:58,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:12:58,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:12:58,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:12:58,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:12:58,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:57" (1/1) ... [2022-01-10 07:12:58,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:12:58,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:12:58,118 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 07:12:58,136 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 07:12:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:12:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:12:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:12:58,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:12:58,241 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:12:58,242 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:12:58,720 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:12:58,730 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:12:58,730 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:12:58,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:12:58 BoogieIcfgContainer [2022-01-10 07:12:58,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:12:58,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:12:58,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:12:58,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:12:58,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:12:57" (1/3) ... [2022-01-10 07:12:58,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41431321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:12:58, skipping insertion in model container [2022-01-10 07:12:58,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:57" (2/3) ... [2022-01-10 07:12:58,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41431321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:12:58, skipping insertion in model container [2022-01-10 07:12:58,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:12:58" (3/3) ... [2022-01-10 07:12:58,739 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 07:12:58,742 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:12:58,743 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:12:58,790 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:12:58,796 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 07:12:58,797 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:12:58,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 163 states have (on average 1.6993865030674846) internal successors, (277), 164 states have internal predecessors, (277), 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 07:12:58,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 07:12:58,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:58,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:12:58,831 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:58,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:58,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2011282842, now seen corresponding path program 1 times [2022-01-10 07:12:58,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:58,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413658414] [2022-01-10 07:12:58,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:58,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:58,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:58,847 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 07:12:58,848 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 07:12:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:59,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:12:59,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:59,182 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 07:12:59,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:59,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:59,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413658414] [2022-01-10 07:12:59,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413658414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:59,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:59,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:12:59,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741804462] [2022-01-10 07:12:59,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:59,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:12:59,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:59,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:12:59,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:12:59,220 INFO L87 Difference]: Start difference. First operand has 165 states, 163 states have (on average 1.6993865030674846) internal successors, (277), 164 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 07:12:59,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:59,291 INFO L93 Difference]: Finished difference Result 391 states and 633 transitions. [2022-01-10 07:12:59,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:12:59,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2022-01-10 07:12:59,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:59,308 INFO L225 Difference]: With dead ends: 391 [2022-01-10 07:12:59,308 INFO L226 Difference]: Without dead ends: 264 [2022-01-10 07:12:59,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 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 07:12:59,312 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 205 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:59,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 592 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:12:59,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-01-10 07:12:59,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2022-01-10 07:12:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.5019157088122606) internal successors, (392), 261 states have internal predecessors, (392), 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 07:12:59,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 392 transitions. [2022-01-10 07:12:59,357 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 392 transitions. Word has length 74 [2022-01-10 07:12:59,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:59,357 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 392 transitions. [2022-01-10 07:12:59,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 07:12:59,358 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 392 transitions. [2022-01-10 07:12:59,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 07:12:59,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:59,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:12:59,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 07:12:59,563 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 07:12:59,564 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:59,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:59,564 INFO L85 PathProgramCache]: Analyzing trace with hash -141824057, now seen corresponding path program 1 times [2022-01-10 07:12:59,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:59,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028225104] [2022-01-10 07:12:59,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:59,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:59,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:59,566 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 07:12:59,568 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 07:12:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:59,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:12:59,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:59,821 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 07:12:59,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:59,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:59,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028225104] [2022-01-10 07:12:59,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028225104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:59,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:59,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:12:59,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418354339] [2022-01-10 07:12:59,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:59,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:12:59,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:59,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:12:59,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:12:59,831 INFO L87 Difference]: Start difference. First operand 262 states and 392 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 07:12:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:59,868 INFO L93 Difference]: Finished difference Result 666 states and 1036 transitions. [2022-01-10 07:12:59,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:12:59,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2022-01-10 07:12:59,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:59,875 INFO L225 Difference]: With dead ends: 666 [2022-01-10 07:12:59,875 INFO L226 Difference]: Without dead ends: 448 [2022-01-10 07:12:59,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 73 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 07:12:59,879 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 166 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 520 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 07:12:59,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 520 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:12:59,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-10 07:12:59,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2022-01-10 07:12:59,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.5393258426966292) internal successors, (685), 445 states have internal predecessors, (685), 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 07:12:59,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 685 transitions. [2022-01-10 07:12:59,909 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 685 transitions. Word has length 75 [2022-01-10 07:12:59,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:59,909 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 685 transitions. [2022-01-10 07:12:59,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 07:12:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 685 transitions. [2022-01-10 07:12:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 07:12:59,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:59,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:12:59,920 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 07:13:00,120 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 07:13:00,120 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:00,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:00,121 INFO L85 PathProgramCache]: Analyzing trace with hash 890430339, now seen corresponding path program 1 times [2022-01-10 07:13:00,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:00,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153460639] [2022-01-10 07:13:00,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:00,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:00,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:00,123 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 07:13:00,124 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 07:13:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:00,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:13:00,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:00,329 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 07:13:00,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:00,330 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:00,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153460639] [2022-01-10 07:13:00,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153460639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:00,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:00,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:13:00,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419706514] [2022-01-10 07:13:00,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:00,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:13:00,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:00,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:13:00,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:13:00,336 INFO L87 Difference]: Start difference. First operand 446 states and 685 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 07:13:00,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:00,367 INFO L93 Difference]: Finished difference Result 1186 states and 1863 transitions. [2022-01-10 07:13:00,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:13:00,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2022-01-10 07:13:00,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:00,371 INFO L225 Difference]: With dead ends: 1186 [2022-01-10 07:13:00,372 INFO L226 Difference]: Without dead ends: 784 [2022-01-10 07:13:00,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 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 07:13:00,375 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 161 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 505 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 07:13:00,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 505 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:00,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-01-10 07:13:00,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 782. [2022-01-10 07:13:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 781 states have (on average 1.558258642765685) internal successors, (1217), 781 states have internal predecessors, (1217), 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 07:13:00,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1217 transitions. [2022-01-10 07:13:00,404 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1217 transitions. Word has length 76 [2022-01-10 07:13:00,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:00,404 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 1217 transitions. [2022-01-10 07:13:00,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 07:13:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1217 transitions. [2022-01-10 07:13:00,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 07:13:00,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:00,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:00,417 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 07:13:00,610 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 07:13:00,610 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:00,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:00,611 INFO L85 PathProgramCache]: Analyzing trace with hash -806203398, now seen corresponding path program 1 times [2022-01-10 07:13:00,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:00,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247367315] [2022-01-10 07:13:00,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:00,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:00,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:00,612 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 07:13:00,613 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 07:13:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:00,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:13:00,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:00,840 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 07:13:00,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:00,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:00,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247367315] [2022-01-10 07:13:00,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247367315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:00,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:00,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:13:00,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906270132] [2022-01-10 07:13:00,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:00,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:13:00,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:00,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:13:00,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:13:00,843 INFO L87 Difference]: Start difference. First operand 782 states and 1217 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 07:13:00,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:00,894 INFO L93 Difference]: Finished difference Result 2130 states and 3355 transitions. [2022-01-10 07:13:00,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:13:00,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2022-01-10 07:13:00,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:00,900 INFO L225 Difference]: With dead ends: 2130 [2022-01-10 07:13:00,900 INFO L226 Difference]: Without dead ends: 1392 [2022-01-10 07:13:00,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 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 07:13:00,905 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 156 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 490 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 07:13:00,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 490 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:00,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2022-01-10 07:13:00,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1390. [2022-01-10 07:13:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 1.564434845212383) internal successors, (2173), 1389 states have internal predecessors, (2173), 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 07:13:00,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 2173 transitions. [2022-01-10 07:13:00,948 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 2173 transitions. Word has length 77 [2022-01-10 07:13:00,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:00,950 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 2173 transitions. [2022-01-10 07:13:00,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 07:13:00,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 2173 transitions. [2022-01-10 07:13:00,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 07:13:00,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:00,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:00,961 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 07:13:01,161 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 07:13:01,162 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:01,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:01,162 INFO L85 PathProgramCache]: Analyzing trace with hash -904090240, now seen corresponding path program 1 times [2022-01-10 07:13:01,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:01,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438084808] [2022-01-10 07:13:01,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:01,163 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:01,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:01,164 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 07:13:01,165 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 07:13:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:01,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:13:01,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:01,382 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 07:13:01,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:01,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:01,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438084808] [2022-01-10 07:13:01,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438084808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:01,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:01,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:13:01,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986281647] [2022-01-10 07:13:01,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:01,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:13:01,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:01,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:13:01,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:13:01,383 INFO L87 Difference]: Start difference. First operand 1390 states and 2173 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 07:13:01,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:01,451 INFO L93 Difference]: Finished difference Result 3826 states and 6015 transitions. [2022-01-10 07:13:01,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:13:01,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2022-01-10 07:13:01,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:01,460 INFO L225 Difference]: With dead ends: 3826 [2022-01-10 07:13:01,460 INFO L226 Difference]: Without dead ends: 2480 [2022-01-10 07:13:01,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 07:13:01,462 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 151 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 475 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 07:13:01,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 475 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2022-01-10 07:13:01,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2478. [2022-01-10 07:13:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2477 states have (on average 1.5619701251513929) internal successors, (3869), 2477 states have internal predecessors, (3869), 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 07:13:01,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3869 transitions. [2022-01-10 07:13:01,530 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3869 transitions. Word has length 78 [2022-01-10 07:13:01,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:01,531 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 3869 transitions. [2022-01-10 07:13:01,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 07:13:01,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3869 transitions. [2022-01-10 07:13:01,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:13:01,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:01,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:01,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:01,743 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 07:13:01,744 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:01,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:01,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1797609537, now seen corresponding path program 1 times [2022-01-10 07:13:01,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:01,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096388995] [2022-01-10 07:13:01,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:01,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:01,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:01,746 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 07:13:01,746 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 07:13:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:01,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:13:01,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:04,494 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 07:13:04,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:04,494 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:04,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096388995] [2022-01-10 07:13:04,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096388995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:04,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:04,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:13:04,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88015503] [2022-01-10 07:13:04,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:04,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:13:04,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:04,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:13:04,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:13:04,496 INFO L87 Difference]: Start difference. First operand 2478 states and 3869 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 07:13:04,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:04,583 INFO L93 Difference]: Finished difference Result 5290 states and 8228 transitions. [2022-01-10 07:13:04,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:13:04,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 79 [2022-01-10 07:13:04,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:04,591 INFO L225 Difference]: With dead ends: 5290 [2022-01-10 07:13:04,591 INFO L226 Difference]: Without dead ends: 2856 [2022-01-10 07:13:04,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:13:04,594 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 179 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:04,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 739 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2022-01-10 07:13:04,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2022-01-10 07:13:04,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2554. [2022-01-10 07:13:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2554 states, 2553 states have (on average 1.5589502546024285) internal successors, (3980), 2553 states have internal predecessors, (3980), 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 07:13:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 3980 transitions. [2022-01-10 07:13:04,717 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 3980 transitions. Word has length 79 [2022-01-10 07:13:04,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:04,717 INFO L470 AbstractCegarLoop]: Abstraction has 2554 states and 3980 transitions. [2022-01-10 07:13:04,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 07:13:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 3980 transitions. [2022-01-10 07:13:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 07:13:04,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:04,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:04,730 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 07:13:04,930 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 07:13:04,931 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:04,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:04,931 INFO L85 PathProgramCache]: Analyzing trace with hash -252245181, now seen corresponding path program 1 times [2022-01-10 07:13:04,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:04,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684753678] [2022-01-10 07:13:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:04,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:04,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:04,933 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 07:13:04,934 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 07:13:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:05,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:13:05,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:05,104 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 07:13:05,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:05,104 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:05,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684753678] [2022-01-10 07:13:05,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684753678] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:05,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:05,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:13:05,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817153642] [2022-01-10 07:13:05,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:05,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:13:05,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:05,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:13:05,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:13:05,106 INFO L87 Difference]: Start difference. First operand 2554 states and 3980 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 07:13:05,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:05,190 INFO L93 Difference]: Finished difference Result 6950 states and 10856 transitions. [2022-01-10 07:13:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:13:05,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2022-01-10 07:13:05,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:05,202 INFO L225 Difference]: With dead ends: 6950 [2022-01-10 07:13:05,202 INFO L226 Difference]: Without dead ends: 4440 [2022-01-10 07:13:05,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 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 07:13:05,206 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 173 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 560 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 07:13:05,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 560 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:05,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2022-01-10 07:13:05,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 4438. [2022-01-10 07:13:05,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4438 states, 4437 states have (on average 1.5519495154383594) internal successors, (6886), 4437 states have internal predecessors, (6886), 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 07:13:05,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4438 states to 4438 states and 6886 transitions. [2022-01-10 07:13:05,328 INFO L78 Accepts]: Start accepts. Automaton has 4438 states and 6886 transitions. Word has length 80 [2022-01-10 07:13:05,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:05,328 INFO L470 AbstractCegarLoop]: Abstraction has 4438 states and 6886 transitions. [2022-01-10 07:13:05,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 07:13:05,328 INFO L276 IsEmpty]: Start isEmpty. Operand 4438 states and 6886 transitions. [2022-01-10 07:13:05,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 07:13:05,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:05,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:05,338 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 07:13:05,536 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 07:13:05,536 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:05,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:05,537 INFO L85 PathProgramCache]: Analyzing trace with hash -41800598, now seen corresponding path program 1 times [2022-01-10 07:13:05,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:05,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285062251] [2022-01-10 07:13:05,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:05,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:05,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:05,538 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 07:13:05,539 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 07:13:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:05,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:13:05,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:05,939 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 07:13:05,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:05,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:05,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285062251] [2022-01-10 07:13:05,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285062251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:05,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:05,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:13:05,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384859342] [2022-01-10 07:13:05,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:05,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:13:05,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:05,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:13:05,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:13:05,941 INFO L87 Difference]: Start difference. First operand 4438 states and 6886 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 07:13:06,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:06,147 INFO L93 Difference]: Finished difference Result 8837 states and 13736 transitions. [2022-01-10 07:13:06,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:13:06,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 81 [2022-01-10 07:13:06,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:06,161 INFO L225 Difference]: With dead ends: 8837 [2022-01-10 07:13:06,161 INFO L226 Difference]: Without dead ends: 4443 [2022-01-10 07:13:06,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:06,166 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 64 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:06,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 357 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-01-10 07:13:06,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4443 states. [2022-01-10 07:13:06,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4443 to 4442. [2022-01-10 07:13:06,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4442 states, 4441 states have (on average 1.5516775501013285) internal successors, (6891), 4441 states have internal predecessors, (6891), 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 07:13:06,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4442 states to 4442 states and 6891 transitions. [2022-01-10 07:13:06,296 INFO L78 Accepts]: Start accepts. Automaton has 4442 states and 6891 transitions. Word has length 81 [2022-01-10 07:13:06,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:06,296 INFO L470 AbstractCegarLoop]: Abstraction has 4442 states and 6891 transitions. [2022-01-10 07:13:06,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 07:13:06,296 INFO L276 IsEmpty]: Start isEmpty. Operand 4442 states and 6891 transitions. [2022-01-10 07:13:06,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 07:13:06,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:06,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:06,305 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 07:13:06,503 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 07:13:06,504 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:06,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:06,504 INFO L85 PathProgramCache]: Analyzing trace with hash -198748465, now seen corresponding path program 1 times [2022-01-10 07:13:06,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:06,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170840566] [2022-01-10 07:13:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:06,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:06,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:06,506 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 07:13:06,508 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 07:13:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:06,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:13:06,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:07,560 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 07:13:07,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:07,560 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:07,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170840566] [2022-01-10 07:13:07,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170840566] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:07,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:07,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:13:07,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237870425] [2022-01-10 07:13:07,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:07,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:13:07,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:07,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:13:07,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:13:07,562 INFO L87 Difference]: Start difference. First operand 4442 states and 6891 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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 07:13:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:08,292 INFO L93 Difference]: Finished difference Result 35200 states and 54785 transitions. [2022-01-10 07:13:08,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:13:08,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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 81 [2022-01-10 07:13:08,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:08,371 INFO L225 Difference]: With dead ends: 35200 [2022-01-10 07:13:08,371 INFO L226 Difference]: Without dead ends: 30806 [2022-01-10 07:13:08,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:13:08,385 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 1752 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:08,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1752 Valid, 1627 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:13:08,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30806 states. [2022-01-10 07:13:08,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30806 to 8834. [2022-01-10 07:13:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8834 states, 8833 states have (on average 1.5396807426695347) internal successors, (13600), 8833 states have internal predecessors, (13600), 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 07:13:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8834 states to 8834 states and 13600 transitions. [2022-01-10 07:13:08,961 INFO L78 Accepts]: Start accepts. Automaton has 8834 states and 13600 transitions. Word has length 81 [2022-01-10 07:13:08,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:08,961 INFO L470 AbstractCegarLoop]: Abstraction has 8834 states and 13600 transitions. [2022-01-10 07:13:08,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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 07:13:08,962 INFO L276 IsEmpty]: Start isEmpty. Operand 8834 states and 13600 transitions. [2022-01-10 07:13:08,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 07:13:08,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:08,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:08,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 07:13:09,169 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 07:13:09,170 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:09,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:09,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1885691313, now seen corresponding path program 1 times [2022-01-10 07:13:09,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:09,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274898636] [2022-01-10 07:13:09,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:09,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:09,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:09,172 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 07:13:09,174 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 07:13:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:09,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:13:09,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:09,341 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 07:13:09,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:09,341 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:09,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274898636] [2022-01-10 07:13:09,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274898636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:09,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:09,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:13:09,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187679820] [2022-01-10 07:13:09,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:09,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:13:09,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:09,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:13:09,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:13:09,342 INFO L87 Difference]: Start difference. First operand 8834 states and 13600 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 07:13:10,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:10,005 INFO L93 Difference]: Finished difference Result 17884 states and 27415 transitions. [2022-01-10 07:13:10,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:13:10,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2022-01-10 07:13:10,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:10,040 INFO L225 Difference]: With dead ends: 17884 [2022-01-10 07:13:10,040 INFO L226 Difference]: Without dead ends: 17882 [2022-01-10 07:13:10,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:13:10,048 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 364 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:10,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 803 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:10,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17882 states. [2022-01-10 07:13:10,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17882 to 9098. [2022-01-10 07:13:10,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9098 states, 9097 states have (on average 1.5240189073320876) internal successors, (13864), 9097 states have internal predecessors, (13864), 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 07:13:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9098 states to 9098 states and 13864 transitions. [2022-01-10 07:13:10,588 INFO L78 Accepts]: Start accepts. Automaton has 9098 states and 13864 transitions. Word has length 82 [2022-01-10 07:13:10,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:10,588 INFO L470 AbstractCegarLoop]: Abstraction has 9098 states and 13864 transitions. [2022-01-10 07:13:10,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 07:13:10,588 INFO L276 IsEmpty]: Start isEmpty. Operand 9098 states and 13864 transitions. [2022-01-10 07:13:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:13:10,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:10,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:10,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:10,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:10,796 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:10,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:10,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1683684575, now seen corresponding path program 1 times [2022-01-10 07:13:10,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:10,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120745649] [2022-01-10 07:13:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:10,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:10,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:10,798 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:10,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 07:13:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:10,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:13:10,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:11,004 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 07:13:11,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:11,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:11,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120745649] [2022-01-10 07:13:11,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120745649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:11,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:11,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:13:11,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021548836] [2022-01-10 07:13:11,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:11,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:13:11,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:11,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:13:11,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:13:11,006 INFO L87 Difference]: Start difference. First operand 9098 states and 13864 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 07:13:11,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:11,515 INFO L93 Difference]: Finished difference Result 22844 states and 34840 transitions. [2022-01-10 07:13:11,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:13:11,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2022-01-10 07:13:11,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:11,537 INFO L225 Difference]: With dead ends: 22844 [2022-01-10 07:13:11,537 INFO L226 Difference]: Without dead ends: 13794 [2022-01-10 07:13:11,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 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 07:13:11,550 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 140 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:11,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 414 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13794 states. [2022-01-10 07:13:12,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13794 to 13728. [2022-01-10 07:13:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13728 states, 13727 states have (on average 1.5174473665039703) internal successors, (20830), 13727 states have internal predecessors, (20830), 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 07:13:12,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13728 states to 13728 states and 20830 transitions. [2022-01-10 07:13:12,351 INFO L78 Accepts]: Start accepts. Automaton has 13728 states and 20830 transitions. Word has length 83 [2022-01-10 07:13:12,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:12,351 INFO L470 AbstractCegarLoop]: Abstraction has 13728 states and 20830 transitions. [2022-01-10 07:13:12,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 07:13:12,351 INFO L276 IsEmpty]: Start isEmpty. Operand 13728 states and 20830 transitions. [2022-01-10 07:13:12,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 07:13:12,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:12,357 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:12,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 07:13:12,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:12,564 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:12,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:12,564 INFO L85 PathProgramCache]: Analyzing trace with hash 967908386, now seen corresponding path program 1 times [2022-01-10 07:13:12,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:12,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050795156] [2022-01-10 07:13:12,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:12,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:12,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:12,566 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:12,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 07:13:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:12,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:13:12,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:13:13,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:13:14,000 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:13:14,001 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:14,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050795156] [2022-01-10 07:13:14,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050795156] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:13:14,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:13:14,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:13:14,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260120408] [2022-01-10 07:13:14,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:13:14,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:13:14,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:14,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:13:14,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:13:14,002 INFO L87 Difference]: Start difference. First operand 13728 states and 20830 transitions. Second operand has 16 states, 16 states have (on average 12.75) internal successors, (204), 15 states have internal predecessors, (204), 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 07:13:15,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:15,139 INFO L93 Difference]: Finished difference Result 31653 states and 47784 transitions. [2022-01-10 07:13:15,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 07:13:15,139 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.75) internal successors, (204), 15 states have internal predecessors, (204), 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 114 [2022-01-10 07:13:15,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:15,160 INFO L225 Difference]: With dead ends: 31653 [2022-01-10 07:13:15,161 INFO L226 Difference]: Without dead ends: 17973 [2022-01-10 07:13:15,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-01-10 07:13:15,178 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 369 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 383 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:15,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 2525 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 701 Invalid, 0 Unknown, 383 Unchecked, 0.3s Time] [2022-01-10 07:13:15,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17973 states. [2022-01-10 07:13:15,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17973 to 13776. [2022-01-10 07:13:15,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13776 states, 13775 states have (on average 1.5168784029038112) internal successors, (20895), 13775 states have internal predecessors, (20895), 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 07:13:15,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13776 states to 13776 states and 20895 transitions. [2022-01-10 07:13:15,848 INFO L78 Accepts]: Start accepts. Automaton has 13776 states and 20895 transitions. Word has length 114 [2022-01-10 07:13:15,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:15,849 INFO L470 AbstractCegarLoop]: Abstraction has 13776 states and 20895 transitions. [2022-01-10 07:13:15,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.75) internal successors, (204), 15 states have internal predecessors, (204), 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 07:13:15,849 INFO L276 IsEmpty]: Start isEmpty. Operand 13776 states and 20895 transitions. [2022-01-10 07:13:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 07:13:15,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:15,855 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:15,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-01-10 07:13:16,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:16,061 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:16,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:16,062 INFO L85 PathProgramCache]: Analyzing trace with hash 124055318, now seen corresponding path program 1 times [2022-01-10 07:13:16,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:16,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197426268] [2022-01-10 07:13:16,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:16,062 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:16,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:16,063 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:16,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 07:13:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:16,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:13:16,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:13:16,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:16,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:16,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197426268] [2022-01-10 07:13:16,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197426268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:16,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:16,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:13:16,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043786711] [2022-01-10 07:13:16,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:16,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:13:16,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:16,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:13:16,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:13:16,281 INFO L87 Difference]: Start difference. First operand 13776 states and 20895 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 07:13:16,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:16,661 INFO L93 Difference]: Finished difference Result 22949 states and 34882 transitions. [2022-01-10 07:13:16,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:13:16,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 114 [2022-01-10 07:13:16,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:16,675 INFO L225 Difference]: With dead ends: 22949 [2022-01-10 07:13:16,675 INFO L226 Difference]: Without dead ends: 9263 [2022-01-10 07:13:16,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 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 07:13:16,689 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 138 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:16,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 502 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:16,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9263 states. [2022-01-10 07:13:17,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9263 to 9199. [2022-01-10 07:13:17,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9199 states, 9198 states have (on average 1.515003261578604) internal successors, (13935), 9198 states have internal predecessors, (13935), 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 07:13:17,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9199 states to 9199 states and 13935 transitions. [2022-01-10 07:13:17,255 INFO L78 Accepts]: Start accepts. Automaton has 9199 states and 13935 transitions. Word has length 114 [2022-01-10 07:13:17,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:17,256 INFO L470 AbstractCegarLoop]: Abstraction has 9199 states and 13935 transitions. [2022-01-10 07:13:17,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 07:13:17,256 INFO L276 IsEmpty]: Start isEmpty. Operand 9199 states and 13935 transitions. [2022-01-10 07:13:17,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 07:13:17,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:17,259 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:17,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 07:13:17,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:17,466 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:17,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:17,467 INFO L85 PathProgramCache]: Analyzing trace with hash -802718855, now seen corresponding path program 1 times [2022-01-10 07:13:17,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:17,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616591680] [2022-01-10 07:13:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:17,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:17,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:17,468 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:17,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 07:13:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:17,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:13:17,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 07:13:17,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:17,893 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:17,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616591680] [2022-01-10 07:13:17,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616591680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:17,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:17,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:13:17,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474953394] [2022-01-10 07:13:17,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:17,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:13:17,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:17,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:13:17,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:13:17,895 INFO L87 Difference]: Start difference. First operand 9199 states and 13935 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 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 07:13:18,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:18,422 INFO L93 Difference]: Finished difference Result 18256 states and 27692 transitions. [2022-01-10 07:13:18,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:13:18,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 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 114 [2022-01-10 07:13:18,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:18,434 INFO L225 Difference]: With dead ends: 18256 [2022-01-10 07:13:18,434 INFO L226 Difference]: Without dead ends: 9205 [2022-01-10 07:13:18,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:18,446 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 64 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:18,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 367 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2022-01-10 07:13:18,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9205 states. [2022-01-10 07:13:18,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9205 to 9204. [2022-01-10 07:13:18,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9204 states, 9203 states have (on average 1.5148321199608823) internal successors, (13941), 9203 states have internal predecessors, (13941), 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 07:13:18,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9204 states to 9204 states and 13941 transitions. [2022-01-10 07:13:18,932 INFO L78 Accepts]: Start accepts. Automaton has 9204 states and 13941 transitions. Word has length 114 [2022-01-10 07:13:18,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:18,933 INFO L470 AbstractCegarLoop]: Abstraction has 9204 states and 13941 transitions. [2022-01-10 07:13:18,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 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 07:13:18,933 INFO L276 IsEmpty]: Start isEmpty. Operand 9204 states and 13941 transitions. [2022-01-10 07:13:18,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 07:13:18,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:18,936 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:18,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:19,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:19,144 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:19,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:19,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1968098398, now seen corresponding path program 1 times [2022-01-10 07:13:19,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:19,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219066488] [2022-01-10 07:13:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:19,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:19,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:19,145 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:19,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 07:13:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:19,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:13:19,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:13:20,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:13:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:13:20,512 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:20,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219066488] [2022-01-10 07:13:20,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219066488] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:13:20,512 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:13:20,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:13:20,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46264828] [2022-01-10 07:13:20,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:13:20,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:13:20,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:20,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:13:20,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:13:20,513 INFO L87 Difference]: Start difference. First operand 9204 states and 13941 transitions. Second operand has 16 states, 16 states have (on average 13.0) internal successors, (208), 15 states have internal predecessors, (208), 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 07:13:21,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:21,543 INFO L93 Difference]: Finished difference Result 25293 states and 38387 transitions. [2022-01-10 07:13:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 07:13:21,543 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.0) internal successors, (208), 15 states have internal predecessors, (208), 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 114 [2022-01-10 07:13:21,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:21,565 INFO L225 Difference]: With dead ends: 25293 [2022-01-10 07:13:21,565 INFO L226 Difference]: Without dead ends: 16305 [2022-01-10 07:13:21,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-01-10 07:13:21,576 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 688 mSDsluCounter, 2749 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 691 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:21,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 3200 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 519 Invalid, 0 Unknown, 691 Unchecked, 0.3s Time] [2022-01-10 07:13:21,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16305 states. [2022-01-10 07:13:22,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16305 to 15376. [2022-01-10 07:13:22,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15376 states, 15375 states have (on average 1.501138211382114) internal successors, (23080), 15375 states have internal predecessors, (23080), 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 07:13:22,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15376 states to 15376 states and 23080 transitions. [2022-01-10 07:13:22,318 INFO L78 Accepts]: Start accepts. Automaton has 15376 states and 23080 transitions. Word has length 114 [2022-01-10 07:13:22,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:22,318 INFO L470 AbstractCegarLoop]: Abstraction has 15376 states and 23080 transitions. [2022-01-10 07:13:22,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.0) internal successors, (208), 15 states have internal predecessors, (208), 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 07:13:22,318 INFO L276 IsEmpty]: Start isEmpty. Operand 15376 states and 23080 transitions. [2022-01-10 07:13:22,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 07:13:22,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:22,322 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:22,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:22,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:22,528 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:22,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:22,529 INFO L85 PathProgramCache]: Analyzing trace with hash 873261433, now seen corresponding path program 1 times [2022-01-10 07:13:22,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:22,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808803812] [2022-01-10 07:13:22,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:22,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:22,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:22,530 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:22,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 07:13:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:22,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:13:22,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 07:13:22,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:22,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:22,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808803812] [2022-01-10 07:13:22,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808803812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:22,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:22,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:13:22,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718198301] [2022-01-10 07:13:22,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:22,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:13:22,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:22,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:13:22,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:13:22,942 INFO L87 Difference]: Start difference. First operand 15376 states and 23080 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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 07:13:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:23,691 INFO L93 Difference]: Finished difference Result 30442 states and 45748 transitions. [2022-01-10 07:13:23,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:13:23,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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 114 [2022-01-10 07:13:23,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:23,710 INFO L225 Difference]: With dead ends: 30442 [2022-01-10 07:13:23,710 INFO L226 Difference]: Without dead ends: 15391 [2022-01-10 07:13:23,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:23,720 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 59 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:23,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 495 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 85 Unchecked, 0.1s Time] [2022-01-10 07:13:23,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15391 states. [2022-01-10 07:13:24,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15391 to 15387. [2022-01-10 07:13:24,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15387 states, 15386 states have (on average 1.5010399064084232) internal successors, (23095), 15386 states have internal predecessors, (23095), 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 07:13:24,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15387 states to 15387 states and 23095 transitions. [2022-01-10 07:13:24,405 INFO L78 Accepts]: Start accepts. Automaton has 15387 states and 23095 transitions. Word has length 114 [2022-01-10 07:13:24,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:24,405 INFO L470 AbstractCegarLoop]: Abstraction has 15387 states and 23095 transitions. [2022-01-10 07:13:24,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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 07:13:24,405 INFO L276 IsEmpty]: Start isEmpty. Operand 15387 states and 23095 transitions. [2022-01-10 07:13:24,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 07:13:24,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:24,410 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:24,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:24,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:24,616 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:24,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:24,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1011604322, now seen corresponding path program 1 times [2022-01-10 07:13:24,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:24,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723910684] [2022-01-10 07:13:24,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:24,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:24,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:24,619 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:24,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:13:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:24,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:13:24,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:25,641 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:13:25,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:13:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:13:26,060 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:26,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723910684] [2022-01-10 07:13:26,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723910684] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:13:26,061 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:13:26,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:13:26,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844338925] [2022-01-10 07:13:26,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:13:26,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:13:26,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:13:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:13:26,062 INFO L87 Difference]: Start difference. First operand 15387 states and 23095 transitions. Second operand has 16 states, 16 states have (on average 13.5) internal successors, (216), 15 states have internal predecessors, (216), 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 07:13:27,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:27,433 INFO L93 Difference]: Finished difference Result 36865 states and 55309 transitions. [2022-01-10 07:13:27,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 07:13:27,433 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.5) internal successors, (216), 15 states have internal predecessors, (216), 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 114 [2022-01-10 07:13:27,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:27,461 INFO L225 Difference]: With dead ends: 36865 [2022-01-10 07:13:27,461 INFO L226 Difference]: Without dead ends: 21851 [2022-01-10 07:13:27,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-01-10 07:13:27,479 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 499 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 832 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:27,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 3053 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 635 Invalid, 0 Unknown, 832 Unchecked, 0.3s Time] [2022-01-10 07:13:27,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21851 states. [2022-01-10 07:13:28,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21851 to 20837. [2022-01-10 07:13:28,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20837 states, 20836 states have (on average 1.4867536955269725) internal successors, (30978), 20836 states have internal predecessors, (30978), 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 07:13:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20837 states to 20837 states and 30978 transitions. [2022-01-10 07:13:28,526 INFO L78 Accepts]: Start accepts. Automaton has 20837 states and 30978 transitions. Word has length 114 [2022-01-10 07:13:28,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:28,526 INFO L470 AbstractCegarLoop]: Abstraction has 20837 states and 30978 transitions. [2022-01-10 07:13:28,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.5) internal successors, (216), 15 states have internal predecessors, (216), 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 07:13:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 20837 states and 30978 transitions. [2022-01-10 07:13:28,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 07:13:28,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:28,532 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:28,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:28,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:28,738 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:28,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:28,738 INFO L85 PathProgramCache]: Analyzing trace with hash -436809177, now seen corresponding path program 1 times [2022-01-10 07:13:28,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:28,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910390617] [2022-01-10 07:13:28,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:28,739 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:28,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:28,740 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:28,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:13:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:28,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:13:28,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 07:13:29,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:29,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:29,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910390617] [2022-01-10 07:13:29,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910390617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:29,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:29,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:13:29,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468221120] [2022-01-10 07:13:29,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:29,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:13:29,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:29,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:13:29,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:13:29,172 INFO L87 Difference]: Start difference. First operand 20837 states and 30978 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 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 07:13:30,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:30,147 INFO L93 Difference]: Finished difference Result 41138 states and 61222 transitions. [2022-01-10 07:13:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:13:30,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 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 114 [2022-01-10 07:13:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:30,174 INFO L225 Difference]: With dead ends: 41138 [2022-01-10 07:13:30,174 INFO L226 Difference]: Without dead ends: 20848 [2022-01-10 07:13:30,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:30,193 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 67 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:30,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 393 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 29 Unchecked, 0.0s Time] [2022-01-10 07:13:30,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20848 states. [2022-01-10 07:13:31,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20848 to 20843. [2022-01-10 07:13:31,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20843 states, 20842 states have (on average 1.4867095288360042) internal successors, (30986), 20842 states have internal predecessors, (30986), 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 07:13:31,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20843 states to 20843 states and 30986 transitions. [2022-01-10 07:13:31,152 INFO L78 Accepts]: Start accepts. Automaton has 20843 states and 30986 transitions. Word has length 114 [2022-01-10 07:13:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:31,153 INFO L470 AbstractCegarLoop]: Abstraction has 20843 states and 30986 transitions. [2022-01-10 07:13:31,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 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 07:13:31,153 INFO L276 IsEmpty]: Start isEmpty. Operand 20843 states and 30986 transitions. [2022-01-10 07:13:31,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 07:13:31,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:31,158 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:31,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:31,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:31,359 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:31,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:31,359 INFO L85 PathProgramCache]: Analyzing trace with hash 587625442, now seen corresponding path program 1 times [2022-01-10 07:13:31,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:31,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917215665] [2022-01-10 07:13:31,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:31,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:31,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:31,361 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:31,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:13:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:31,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:13:31,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:13:32,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:13:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:13:32,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:32,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917215665] [2022-01-10 07:13:32,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917215665] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:13:32,866 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:13:32,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:13:32,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812506147] [2022-01-10 07:13:32,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:13:32,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:13:32,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:32,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:13:32,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:13:32,867 INFO L87 Difference]: Start difference. First operand 20843 states and 30986 transitions. Second operand has 16 states, 16 states have (on average 13.75) internal successors, (220), 15 states have internal predecessors, (220), 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 07:13:34,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:34,647 INFO L93 Difference]: Finished difference Result 52739 states and 78393 transitions. [2022-01-10 07:13:34,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 07:13:34,647 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.75) internal successors, (220), 15 states have internal predecessors, (220), 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 114 [2022-01-10 07:13:34,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:34,690 INFO L225 Difference]: With dead ends: 52739 [2022-01-10 07:13:34,690 INFO L226 Difference]: Without dead ends: 32473 [2022-01-10 07:13:34,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-01-10 07:13:34,716 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 630 mSDsluCounter, 3287 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 3656 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 858 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:34,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 3656 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 563 Invalid, 0 Unknown, 858 Unchecked, 0.2s Time] [2022-01-10 07:13:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32473 states. [2022-01-10 07:13:36,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32473 to 30672. [2022-01-10 07:13:36,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30672 states, 30671 states have (on average 1.4772912523230413) internal successors, (45310), 30671 states have internal predecessors, (45310), 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 07:13:36,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30672 states to 30672 states and 45310 transitions. [2022-01-10 07:13:36,354 INFO L78 Accepts]: Start accepts. Automaton has 30672 states and 45310 transitions. Word has length 114 [2022-01-10 07:13:36,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:36,354 INFO L470 AbstractCegarLoop]: Abstraction has 30672 states and 45310 transitions. [2022-01-10 07:13:36,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.75) internal successors, (220), 15 states have internal predecessors, (220), 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 07:13:36,354 INFO L276 IsEmpty]: Start isEmpty. Operand 30672 states and 45310 transitions. [2022-01-10 07:13:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 07:13:36,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:36,362 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:36,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:36,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:36,562 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:36,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:36,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1548075810, now seen corresponding path program 1 times [2022-01-10 07:13:36,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:36,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409667348] [2022-01-10 07:13:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:36,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:36,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:36,564 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:36,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:13:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:36,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:13:36,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:13:37,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:13:37,717 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:13:37,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:37,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409667348] [2022-01-10 07:13:37,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409667348] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:13:37,717 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:13:37,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:13:37,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225163016] [2022-01-10 07:13:37,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:13:37,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:13:37,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:37,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:13:37,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:13:37,718 INFO L87 Difference]: Start difference. First operand 30672 states and 45310 transitions. Second operand has 16 states, 16 states have (on average 12.5) internal successors, (200), 15 states have internal predecessors, (200), 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 07:13:40,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:40,586 INFO L93 Difference]: Finished difference Result 80665 states and 119241 transitions. [2022-01-10 07:13:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 07:13:40,587 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.5) internal successors, (200), 15 states have internal predecessors, (200), 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 114 [2022-01-10 07:13:40,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:40,669 INFO L225 Difference]: With dead ends: 80665 [2022-01-10 07:13:40,669 INFO L226 Difference]: Without dead ends: 50795 [2022-01-10 07:13:40,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-01-10 07:13:40,695 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 256 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 243 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:40,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 2610 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 324 Invalid, 0 Unknown, 243 Unchecked, 0.2s Time] [2022-01-10 07:13:40,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50795 states. [2022-01-10 07:13:43,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50795 to 48958. [2022-01-10 07:13:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48958 states, 48957 states have (on average 1.4716792287109095) internal successors, (72049), 48957 states have internal predecessors, (72049), 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 07:13:43,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48958 states to 48958 states and 72049 transitions. [2022-01-10 07:13:43,373 INFO L78 Accepts]: Start accepts. Automaton has 48958 states and 72049 transitions. Word has length 114 [2022-01-10 07:13:43,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:43,373 INFO L470 AbstractCegarLoop]: Abstraction has 48958 states and 72049 transitions. [2022-01-10 07:13:43,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.5) internal successors, (200), 15 states have internal predecessors, (200), 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 07:13:43,373 INFO L276 IsEmpty]: Start isEmpty. Operand 48958 states and 72049 transitions. [2022-01-10 07:13:43,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 07:13:43,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:43,385 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:43,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-01-10 07:13:43,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:43,586 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:43,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:43,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1759463289, now seen corresponding path program 1 times [2022-01-10 07:13:43,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:43,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970131541] [2022-01-10 07:13:43,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:43,587 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:43,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:43,588 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:43,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:13:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:43,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:13:43,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 07:13:44,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:44,022 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:44,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970131541] [2022-01-10 07:13:44,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970131541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:44,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:44,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:13:44,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026322931] [2022-01-10 07:13:44,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:44,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:13:44,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:44,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:13:44,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:13:44,023 INFO L87 Difference]: Start difference. First operand 48958 states and 72049 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 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 07:13:46,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:46,705 INFO L93 Difference]: Finished difference Result 96878 states and 142691 transitions. [2022-01-10 07:13:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:13:46,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 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 114 [2022-01-10 07:13:46,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:46,778 INFO L225 Difference]: With dead ends: 96878 [2022-01-10 07:13:46,778 INFO L226 Difference]: Without dead ends: 48963 [2022-01-10 07:13:46,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:46,817 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 66 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:46,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 405 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 31 Unchecked, 0.0s Time] [2022-01-10 07:13:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48963 states. [2022-01-10 07:13:49,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48963 to 48958. [2022-01-10 07:13:49,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48958 states, 48957 states have (on average 1.4716588026227098) internal successors, (72048), 48957 states have internal predecessors, (72048), 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 07:13:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48958 states to 48958 states and 72048 transitions. [2022-01-10 07:13:49,473 INFO L78 Accepts]: Start accepts. Automaton has 48958 states and 72048 transitions. Word has length 114 [2022-01-10 07:13:49,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:49,473 INFO L470 AbstractCegarLoop]: Abstraction has 48958 states and 72048 transitions. [2022-01-10 07:13:49,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 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 07:13:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 48958 states and 72048 transitions. [2022-01-10 07:13:49,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 07:13:49,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:49,485 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:49,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:49,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:49,690 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:49,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:49,690 INFO L85 PathProgramCache]: Analyzing trace with hash 801942562, now seen corresponding path program 1 times [2022-01-10 07:13:49,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:49,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900402576] [2022-01-10 07:13:49,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:49,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:49,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:49,692 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:49,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:13:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:49,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:13:49,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:13:50,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:13:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:13:51,066 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:51,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900402576] [2022-01-10 07:13:51,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900402576] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:13:51,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:13:51,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:13:51,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460748400] [2022-01-10 07:13:51,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:13:51,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:13:51,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:51,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:13:51,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:13:51,068 INFO L87 Difference]: Start difference. First operand 48958 states and 72048 transitions. Second operand has 16 states, 16 states have (on average 13.25) internal successors, (212), 15 states have internal predecessors, (212), 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 07:13:54,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:54,408 INFO L93 Difference]: Finished difference Result 106204 states and 155884 transitions. [2022-01-10 07:13:54,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 07:13:54,410 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.25) internal successors, (212), 15 states have internal predecessors, (212), 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 114 [2022-01-10 07:13:54,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:54,496 INFO L225 Difference]: With dead ends: 106204 [2022-01-10 07:13:54,497 INFO L226 Difference]: Without dead ends: 58300 [2022-01-10 07:13:54,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-01-10 07:13:54,542 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 316 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:54,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2034 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 287 Invalid, 0 Unknown, 262 Unchecked, 0.2s Time] [2022-01-10 07:13:54,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58300 states. [2022-01-10 07:13:57,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58300 to 49009. [2022-01-10 07:13:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49009 states, 49008 states have (on average 1.4715556643813255) internal successors, (72118), 49008 states have internal predecessors, (72118), 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 07:13:57,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49009 states to 49009 states and 72118 transitions. [2022-01-10 07:13:57,602 INFO L78 Accepts]: Start accepts. Automaton has 49009 states and 72118 transitions. Word has length 114 [2022-01-10 07:13:57,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:57,602 INFO L470 AbstractCegarLoop]: Abstraction has 49009 states and 72118 transitions. [2022-01-10 07:13:57,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.25) internal successors, (212), 15 states have internal predecessors, (212), 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 07:13:57,602 INFO L276 IsEmpty]: Start isEmpty. Operand 49009 states and 72118 transitions. [2022-01-10 07:13:57,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 07:13:57,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:57,614 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:57,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:57,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:57,821 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:57,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:57,821 INFO L85 PathProgramCache]: Analyzing trace with hash 570669095, now seen corresponding path program 1 times [2022-01-10 07:13:57,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:57,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893196388] [2022-01-10 07:13:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:57,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:57,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:57,823 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:57,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:13:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:57,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:13:57,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:58,337 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 07:13:58,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:58,338 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:58,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893196388] [2022-01-10 07:13:58,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893196388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:58,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:58,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:13:58,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269134645] [2022-01-10 07:13:58,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:58,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:13:58,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:58,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:13:58,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:13:58,339 INFO L87 Difference]: Start difference. First operand 49009 states and 72118 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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 07:14:00,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:14:00,884 INFO L93 Difference]: Finished difference Result 97093 states and 142962 transitions. [2022-01-10 07:14:00,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:14:00,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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 114 [2022-01-10 07:14:00,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:14:00,949 INFO L225 Difference]: With dead ends: 97093 [2022-01-10 07:14:00,949 INFO L226 Difference]: Without dead ends: 49010 [2022-01-10 07:14:00,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:14:00,983 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 41 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:14:00,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 579 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 85 Unchecked, 0.1s Time] [2022-01-10 07:14:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49010 states. [2022-01-10 07:14:03,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49010 to 49009. [2022-01-10 07:14:03,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49009 states, 49008 states have (on average 1.4715352595494613) internal successors, (72117), 49008 states have internal predecessors, (72117), 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 07:14:03,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49009 states to 49009 states and 72117 transitions. [2022-01-10 07:14:03,818 INFO L78 Accepts]: Start accepts. Automaton has 49009 states and 72117 transitions. Word has length 114 [2022-01-10 07:14:03,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:14:03,819 INFO L470 AbstractCegarLoop]: Abstraction has 49009 states and 72117 transitions. [2022-01-10 07:14:03,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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 07:14:03,819 INFO L276 IsEmpty]: Start isEmpty. Operand 49009 states and 72117 transitions. [2022-01-10 07:14:03,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 07:14:03,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:14:03,830 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:03,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:14:04,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:14:04,030 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:14:04,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:14:04,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1649746017, now seen corresponding path program 1 times [2022-01-10 07:14:04,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:14:04,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139817281] [2022-01-10 07:14:04,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:14:04,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:14:04,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:14:04,032 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:14:04,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:14:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:14:04,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:14:04,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:14:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:14:04,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:14:04,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:14:04,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139817281] [2022-01-10 07:14:04,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139817281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:14:04,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:14:04,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:14:04,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310355659] [2022-01-10 07:14:04,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:14:04,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:14:04,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:14:04,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:14:04,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:14:04,257 INFO L87 Difference]: Start difference. First operand 49009 states and 72117 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 07:14:05,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:14:05,658 INFO L93 Difference]: Finished difference Result 73161 states and 107687 transitions. [2022-01-10 07:14:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:14:05,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 115 [2022-01-10 07:14:05,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:14:05,692 INFO L225 Difference]: With dead ends: 73161 [2022-01-10 07:14:05,692 INFO L226 Difference]: Without dead ends: 25151 [2022-01-10 07:14:05,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 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 07:14:05,730 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 119 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:14:05,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 483 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:14:05,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25151 states.