/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/eca-rers2012/Problem10_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:54:08,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:54:08,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:54:08,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:54:08,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:54:08,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:54:08,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:54:08,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:54:08,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:54:08,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:54:08,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:54:08,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-01-10 04:54:08,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:54:08,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:54:08,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:54:08,956 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 04:54:08,979 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:54:08,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:54:08,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:54:08,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:54:08,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:54:08,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:54:08,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:54:08,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:54:08,981 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:54:08,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:54:08,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:54:08,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:54:08,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:54:08,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:54:08,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:54:08,981 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:54:08,981 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:54:08,981 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:54:08,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:54:08,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:54:08,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:54:08,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:54:08,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:54:08,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:54:08,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:54:08,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:54:08,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:54:08,982 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:54:08,982 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:54:08,982 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:54:08,983 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:54:08,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:54:08,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:54:08,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:54:09,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:54:09,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:54:09,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:54:09,209 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:54:09,210 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:54:09,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2022-01-10 04:54:09,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9a899b30/2e16d8b296c94bd7bc1da7b65b53633d/FLAGdbc9f27d0 [2022-01-10 04:54:09,747 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:54:09,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2022-01-10 04:54:09,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9a899b30/2e16d8b296c94bd7bc1da7b65b53633d/FLAGdbc9f27d0 [2022-01-10 04:54:10,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9a899b30/2e16d8b296c94bd7bc1da7b65b53633d [2022-01-10 04:54:10,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:54:10,257 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:54:10,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:54:10,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:54:10,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:54:10,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:54:10" (1/1) ... [2022-01-10 04:54:10,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a88d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:54:10, skipping insertion in model container [2022-01-10 04:54:10,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:54:10" (1/1) ... [2022-01-10 04:54:10,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:54:10,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:54:10,480 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label17.c[3604,3617] [2022-01-10 04:54:10,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:54:10,706 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:54:10,724 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label17.c[3604,3617] [2022-01-10 04:54:10,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:54:10,800 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:54:10,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:54:10 WrapperNode [2022-01-10 04:54:10,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:54:10,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:54:10,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:54:10,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:54:10,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:54:10" (1/1) ... [2022-01-10 04:54:10,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:54:10" (1/1) ... [2022-01-10 04:54:10,879 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 595 [2022-01-10 04:54:10,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:54:10,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:54:10,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:54:10,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:54:10,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:54:10" (1/1) ... [2022-01-10 04:54:10,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:54:10" (1/1) ... [2022-01-10 04:54:10,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:54:10" (1/1) ... [2022-01-10 04:54:10,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:54:10" (1/1) ... [2022-01-10 04:54:10,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:54:10" (1/1) ... [2022-01-10 04:54:10,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:54:10" (1/1) ... [2022-01-10 04:54:10,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:54:10" (1/1) ... [2022-01-10 04:54:10,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:54:10,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:54:10,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:54:10,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:54:10,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:54:10" (1/1) ... [2022-01-10 04:54:10,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:54:10,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:54:10,992 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 04:54:11,012 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 04:54:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:54:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:54:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:54:11,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:54:11,091 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:54:11,092 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:54:12,910 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:54:12,916 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:54:12,916 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:54:12,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:54:12 BoogieIcfgContainer [2022-01-10 04:54:12,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:54:12,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:54:12,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:54:12,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:54:12,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:54:10" (1/3) ... [2022-01-10 04:54:12,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c544401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:54:12, skipping insertion in model container [2022-01-10 04:54:12,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:54:10" (2/3) ... [2022-01-10 04:54:12,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c544401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:54:12, skipping insertion in model container [2022-01-10 04:54:12,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:54:12" (3/3) ... [2022-01-10 04:54:12,924 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label17.c [2022-01-10 04:54:12,927 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:54:12,927 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:54:12,962 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:54:12,967 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 04:54:12,967 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:54:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 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 04:54:12,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 04:54:12,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:54:12,984 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] [2022-01-10 04:54:12,985 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:54:12,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:54:12,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1722039382, now seen corresponding path program 1 times [2022-01-10 04:54:13,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:54:13,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277486755] [2022-01-10 04:54:13,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:54:13,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:54:13,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:54:13,005 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 04:54:13,013 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 04:54:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:54:13,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:54:13,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:54:13,247 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 04:54:13,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:54:13,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:54:13,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277486755] [2022-01-10 04:54:13,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277486755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:54:13,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:54:13,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:54:13,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186366303] [2022-01-10 04:54:13,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:54:13,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:54:13,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:54:13,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:54:13,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:54:13,278 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 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 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 04:54:15,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:54:15,935 INFO L93 Difference]: Finished difference Result 567 states and 981 transitions. [2022-01-10 04:54:15,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:54:15,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2022-01-10 04:54:15,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:54:15,945 INFO L225 Difference]: With dead ends: 567 [2022-01-10 04:54:15,945 INFO L226 Difference]: Without dead ends: 282 [2022-01-10 04:54:15,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 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 04:54:15,950 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 132 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:54:15,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 103 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 04:54:15,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-10 04:54:16,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-01-10 04:54:16,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.395017793594306) internal successors, (392), 281 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 04:54:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 392 transitions. [2022-01-10 04:54:16,024 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 392 transitions. Word has length 30 [2022-01-10 04:54:16,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:54:16,024 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 392 transitions. [2022-01-10 04:54:16,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 04:54:16,025 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 392 transitions. [2022-01-10 04:54:16,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 04:54:16,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:54:16,027 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:54:16,037 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 04:54:16,232 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 04:54:16,233 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:54:16,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:54:16,233 INFO L85 PathProgramCache]: Analyzing trace with hash -496546090, now seen corresponding path program 1 times [2022-01-10 04:54:16,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:54:16,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77915153] [2022-01-10 04:54:16,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:54:16,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:54:16,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:54:16,236 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 04:54:16,237 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 04:54:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:54:16,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:54:16,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:54:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:54:16,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:54:18,911 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:54:18,911 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:54:18,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77915153] [2022-01-10 04:54:18,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77915153] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:54:18,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:54:18,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-01-10 04:54:18,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501013534] [2022-01-10 04:54:18,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:54:18,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 04:54:18,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:54:18,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 04:54:18,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 04:54:18,915 INFO L87 Difference]: Start difference. First operand 282 states and 392 transitions. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 5 states have internal predecessors, (191), 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 04:54:38,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:54:38,830 INFO L93 Difference]: Finished difference Result 840 states and 1253 transitions. [2022-01-10 04:54:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 04:54:38,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 5 states have internal predecessors, (191), 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 96 [2022-01-10 04:54:38,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:54:38,838 INFO L225 Difference]: With dead ends: 840 [2022-01-10 04:54:38,838 INFO L226 Difference]: Without dead ends: 699 [2022-01-10 04:54:38,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:54:38,839 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 611 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:54:38,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 49 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 19.6s Time] [2022-01-10 04:54:38,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-01-10 04:54:38,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2022-01-10 04:54:38,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.3896848137535818) internal successors, (970), 698 states have internal predecessors, (970), 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 04:54:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 970 transitions. [2022-01-10 04:54:38,875 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 970 transitions. Word has length 96 [2022-01-10 04:54:38,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:54:38,875 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 970 transitions. [2022-01-10 04:54:38,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 5 states have internal predecessors, (191), 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 04:54:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 970 transitions. [2022-01-10 04:54:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 04:54:38,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:54:38,878 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:54:38,901 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 04:54:39,086 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 04:54:39,086 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:54:39,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:54:39,087 INFO L85 PathProgramCache]: Analyzing trace with hash -504801396, now seen corresponding path program 1 times [2022-01-10 04:54:39,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:54:39,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845237904] [2022-01-10 04:54:39,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:54:39,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:54:39,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:54:39,092 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 04:54:39,095 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 04:54:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:54:39,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:54:39,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:54:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:54:39,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:54:39,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:54:39,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845237904] [2022-01-10 04:54:39,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845237904] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:54:39,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:54:39,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:54:39,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422803680] [2022-01-10 04:54:39,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:54:39,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:54:39,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:54:39,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:54:39,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:54:39,358 INFO L87 Difference]: Start difference. First operand 699 states and 970 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 04:54:42,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:54:42,147 INFO L93 Difference]: Finished difference Result 1813 states and 2562 transitions. [2022-01-10 04:54:42,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:54:42,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 100 [2022-01-10 04:54:42,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:54:42,153 INFO L225 Difference]: With dead ends: 1813 [2022-01-10 04:54:42,153 INFO L226 Difference]: Without dead ends: 1116 [2022-01-10 04:54:42,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 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 04:54:42,156 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 75 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:54:42,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 77 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 04:54:42,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-01-10 04:54:42,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 838. [2022-01-10 04:54:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.3189964157706093) internal successors, (1104), 837 states have internal predecessors, (1104), 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 04:54:42,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1104 transitions. [2022-01-10 04:54:42,199 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1104 transitions. Word has length 100 [2022-01-10 04:54:42,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:54:42,199 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1104 transitions. [2022-01-10 04:54:42,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 04:54:42,199 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1104 transitions. [2022-01-10 04:54:42,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 04:54:42,200 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:54:42,201 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:54:42,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 04:54:42,407 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 04:54:42,408 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:54:42,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:54:42,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1231744932, now seen corresponding path program 1 times [2022-01-10 04:54:42,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:54:42,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123744148] [2022-01-10 04:54:42,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:54:42,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:54:42,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:54:42,424 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 04:54:42,467 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 04:54:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:54:42,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:54:42,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:54:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:54:42,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:54:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:54:45,552 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:54:45,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123744148] [2022-01-10 04:54:45,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123744148] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 04:54:45,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 04:54:45,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 04:54:45,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650393710] [2022-01-10 04:54:45,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:54:45,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:54:45,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:54:45,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:54:45,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 04:54:45,554 INFO L87 Difference]: Start difference. First operand 838 states and 1104 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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 04:54:52,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 04:55:15,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:55:15,986 INFO L93 Difference]: Finished difference Result 1832 states and 2475 transitions. [2022-01-10 04:55:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:55:15,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2022-01-10 04:55:15,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:55:15,994 INFO L225 Difference]: With dead ends: 1832 [2022-01-10 04:55:15,994 INFO L226 Difference]: Without dead ends: 1255 [2022-01-10 04:55:15,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 04:55:15,996 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 77 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:55:15,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 17 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 30.4s Time] [2022-01-10 04:55:15,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2022-01-10 04:55:16,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 838. [2022-01-10 04:55:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.3130227001194743) internal successors, (1099), 837 states have internal predecessors, (1099), 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 04:55:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1099 transitions. [2022-01-10 04:55:16,022 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1099 transitions. Word has length 105 [2022-01-10 04:55:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:55:16,023 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1099 transitions. [2022-01-10 04:55:16,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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 04:55:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1099 transitions. [2022-01-10 04:55:16,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 04:55:16,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:55:16,040 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:55:16,050 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 04:55:16,240 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 04:55:16,241 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:55:16,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:55:16,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1048270468, now seen corresponding path program 1 times [2022-01-10 04:55:16,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:55:16,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252297822] [2022-01-10 04:55:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:55:16,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:55:16,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:55:16,258 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 04:55:16,260 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 04:55:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:55:16,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:55:16,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:55:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:55:16,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:55:16,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:55:16,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252297822] [2022-01-10 04:55:16,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252297822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:55:16,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:55:16,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:55:16,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448830862] [2022-01-10 04:55:16,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:55:16,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:55:16,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:55:16,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:55:16,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:55:16,530 INFO L87 Difference]: Start difference. First operand 838 states and 1099 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 04:55:18,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:55:18,770 INFO L93 Difference]: Finished difference Result 1952 states and 2658 transitions. [2022-01-10 04:55:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:55:18,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 04:55:18,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:55:18,775 INFO L225 Difference]: With dead ends: 1952 [2022-01-10 04:55:18,775 INFO L226 Difference]: Without dead ends: 1394 [2022-01-10 04:55:18,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 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 04:55:18,776 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 85 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:55:18,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 36 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 04:55:18,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2022-01-10 04:55:18,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1394. [2022-01-10 04:55:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 1.2821249102656138) internal successors, (1786), 1393 states have internal predecessors, (1786), 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 04:55:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1786 transitions. [2022-01-10 04:55:18,794 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1786 transitions. Word has length 121 [2022-01-10 04:55:18,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:55:18,794 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 1786 transitions. [2022-01-10 04:55:18,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 04:55:18,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1786 transitions. [2022-01-10 04:55:18,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-01-10 04:55:18,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:55:18,796 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:55:18,809 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 04:55:19,003 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 04:55:19,004 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:55:19,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:55:19,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1880634543, now seen corresponding path program 1 times [2022-01-10 04:55:19,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:55:19,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675817449] [2022-01-10 04:55:19,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:55:19,006 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:55:19,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:55:19,020 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 04:55:19,052 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 04:55:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:55:19,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:55:19,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:55:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-01-10 04:55:19,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:55:19,406 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:55:19,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675817449] [2022-01-10 04:55:19,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675817449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:55:19,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:55:19,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:55:19,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423268919] [2022-01-10 04:55:19,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:55:19,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:55:19,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:55:19,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:55:19,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:55:19,407 INFO L87 Difference]: Start difference. First operand 1394 states and 1786 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 04:55:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:55:21,820 INFO L93 Difference]: Finished difference Result 3064 states and 4047 transitions. [2022-01-10 04:55:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:55:21,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 209 [2022-01-10 04:55:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:55:21,825 INFO L225 Difference]: With dead ends: 3064 [2022-01-10 04:55:21,825 INFO L226 Difference]: Without dead ends: 1950 [2022-01-10 04:55:21,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 207 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 04:55:21,827 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 115 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:55:21,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 210 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 04:55:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2022-01-10 04:55:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1950. [2022-01-10 04:55:21,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1949 states have (on average 1.2401231400718318) internal successors, (2417), 1949 states have internal predecessors, (2417), 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 04:55:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2417 transitions. [2022-01-10 04:55:21,852 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2417 transitions. Word has length 209 [2022-01-10 04:55:21,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:55:21,852 INFO L470 AbstractCegarLoop]: Abstraction has 1950 states and 2417 transitions. [2022-01-10 04:55:21,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 04:55:21,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2417 transitions. [2022-01-10 04:55:21,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-01-10 04:55:21,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:55:21,854 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:55:21,873 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 04:55:22,062 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 04:55:22,062 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:55:22,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:55:22,063 INFO L85 PathProgramCache]: Analyzing trace with hash -187484028, now seen corresponding path program 1 times [2022-01-10 04:55:22,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:55:22,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672618655] [2022-01-10 04:55:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:55:22,065 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:55:22,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:55:22,066 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 04:55:22,071 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 04:55:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:55:22,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:55:22,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:55:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 04:55:22,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:55:22,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:55:22,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672618655] [2022-01-10 04:55:22,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672618655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:55:22,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:55:22,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:55:22,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315820872] [2022-01-10 04:55:22,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:55:22,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:55:22,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:55:22,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:55:22,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:55:22,491 INFO L87 Difference]: Start difference. First operand 1950 states and 2417 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 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 04:55:24,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:55:24,975 INFO L93 Difference]: Finished difference Result 4315 states and 5491 transitions. [2022-01-10 04:55:24,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:55:24,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 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 227 [2022-01-10 04:55:24,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:55:24,981 INFO L225 Difference]: With dead ends: 4315 [2022-01-10 04:55:24,981 INFO L226 Difference]: Without dead ends: 2645 [2022-01-10 04:55:24,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 225 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 04:55:24,984 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 67 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:55:24,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 200 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 04:55:24,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2022-01-10 04:55:25,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2645. [2022-01-10 04:55:25,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2645 states, 2644 states have (on average 1.2072617246596067) internal successors, (3192), 2644 states have internal predecessors, (3192), 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 04:55:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2645 states to 2645 states and 3192 transitions. [2022-01-10 04:55:25,015 INFO L78 Accepts]: Start accepts. Automaton has 2645 states and 3192 transitions. Word has length 227 [2022-01-10 04:55:25,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:55:25,015 INFO L470 AbstractCegarLoop]: Abstraction has 2645 states and 3192 transitions. [2022-01-10 04:55:25,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 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 04:55:25,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states and 3192 transitions. [2022-01-10 04:55:25,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-01-10 04:55:25,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:55:25,018 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 04:55:25,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 04:55:25,226 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 04:55:25,226 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:55:25,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:55:25,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1918190248, now seen corresponding path program 1 times [2022-01-10 04:55:25,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:55:25,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809049276] [2022-01-10 04:55:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:55:25,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:55:25,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:55:25,231 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 04:55:25,233 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 04:55:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:55:25,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:55:25,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:55:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-01-10 04:55:25,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:55:25,688 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:55:25,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809049276] [2022-01-10 04:55:25,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809049276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:55:25,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:55:25,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:55:25,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995370778] [2022-01-10 04:55:25,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:55:25,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:55:25,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:55:25,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:55:25,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:55:25,690 INFO L87 Difference]: Start difference. First operand 2645 states and 3192 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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)