/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.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:18:08,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:18:08,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:18:08,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 07:18:08,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:18:08,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:18:08,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:18:08,146 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 07:18:08,162 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:18:08,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:18:08,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:18:08,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:18:08,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:18:08,164 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:18:08,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:18:08,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:18:08,165 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:18:08,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:18:08,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:18:08,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:18:08,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:18:08,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:18:08,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:18:08,166 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:18:08,166 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:18:08,166 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:18:08,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:18:08,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:18:08,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:18:08,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:18:08,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:18:08,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:18:08,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:18:08,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:18:08,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:18:08,167 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:18:08,167 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:18:08,168 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:18:08,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:18:08,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:18:08,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:18:08,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:18:08,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:18:08,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:18:08,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:18:08,367 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:18:08,367 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:18:08,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 07:18:08,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9509ccc0/5bad06b411904e34b489ce391348a716/FLAG8a18d38af [2022-01-10 07:18:08,788 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:18:08,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 07:18:08,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9509ccc0/5bad06b411904e34b489ce391348a716/FLAG8a18d38af [2022-01-10 07:18:08,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9509ccc0/5bad06b411904e34b489ce391348a716 [2022-01-10 07:18:08,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:18:08,814 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:18:08,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:18:08,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:18:08,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:18:08,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:18:08" (1/1) ... [2022-01-10 07:18:08,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b2a1688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:18:08, skipping insertion in model container [2022-01-10 07:18:08,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:18:08" (1/1) ... [2022-01-10 07:18:08,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:18:08,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:18:09,090 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.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9094,9107] [2022-01-10 07:18:09,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:18:09,144 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:18:09,199 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.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9094,9107] [2022-01-10 07:18:09,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:18:09,234 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:18:09,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:18:09 WrapperNode [2022-01-10 07:18:09,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:18:09,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:18:09,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:18:09,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:18:09,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:18:09" (1/1) ... [2022-01-10 07:18:09,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:18:09" (1/1) ... [2022-01-10 07:18:09,286 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 713 [2022-01-10 07:18:09,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:18:09,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:18:09,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:18:09,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:18:09,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:18:09" (1/1) ... [2022-01-10 07:18:09,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:18:09" (1/1) ... [2022-01-10 07:18:09,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:18:09" (1/1) ... [2022-01-10 07:18:09,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:18:09" (1/1) ... [2022-01-10 07:18:09,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:18:09" (1/1) ... [2022-01-10 07:18:09,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:18:09" (1/1) ... [2022-01-10 07:18:09,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:18:09" (1/1) ... [2022-01-10 07:18:09,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:18:09,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:18:09,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:18:09,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:18:09,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:18:09" (1/1) ... [2022-01-10 07:18:09,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:18:09,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:18:09,370 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 07:18:09,387 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 07:18:09,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:18:09,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:18:09,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:18:09,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:18:09,530 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:18:09,531 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:18:10,100 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:18:10,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:18:10,106 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:18:10,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:18:10 BoogieIcfgContainer [2022-01-10 07:18:10,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:18:10,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:18:10,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:18:10,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:18:10,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:18:08" (1/3) ... [2022-01-10 07:18:10,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c8423b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:18:10, skipping insertion in model container [2022-01-10 07:18:10,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:18:09" (2/3) ... [2022-01-10 07:18:10,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c8423b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:18:10, skipping insertion in model container [2022-01-10 07:18:10,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:18:10" (3/3) ... [2022-01-10 07:18:10,113 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 07:18:10,116 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:18:10,116 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:18:10,146 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:18:10,151 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 07:18:10,151 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:18:10,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 175 states have (on average 1.76) internal successors, (308), 176 states have internal predecessors, (308), 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 07:18:10,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:18:10,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:10,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:10,169 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:10,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:10,173 INFO L85 PathProgramCache]: Analyzing trace with hash -822713823, now seen corresponding path program 1 times [2022-01-10 07:18:10,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:10,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239725261] [2022-01-10 07:18:10,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:10,188 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:10,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:10,190 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 07:18:10,194 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 07:18:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:10,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:18:10,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:11,060 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 07:18:11,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:11,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:11,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239725261] [2022-01-10 07:18:11,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239725261] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:11,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:11,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:18:11,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603637591] [2022-01-10 07:18:11,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:11,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:18:11,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:11,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:18:11,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:18:11,087 INFO L87 Difference]: Start difference. First operand has 177 states, 175 states have (on average 1.76) internal successors, (308), 176 states have internal predecessors, (308), 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 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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 07:18:11,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:11,277 INFO L93 Difference]: Finished difference Result 320 states and 534 transitions. [2022-01-10 07:18:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:18:11,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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 90 [2022-01-10 07:18:11,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:11,287 INFO L225 Difference]: With dead ends: 320 [2022-01-10 07:18:11,287 INFO L226 Difference]: Without dead ends: 174 [2022-01-10 07:18:11,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 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 07:18:11,292 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 170 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:11,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 461 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2022-01-10 07:18:11,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-10 07:18:11,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-01-10 07:18:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3815028901734103) internal successors, (239), 173 states have internal predecessors, (239), 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 07:18:11,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 239 transitions. [2022-01-10 07:18:11,330 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 239 transitions. Word has length 90 [2022-01-10 07:18:11,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:11,331 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 239 transitions. [2022-01-10 07:18:11,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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 07:18:11,331 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 239 transitions. [2022-01-10 07:18:11,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 07:18:11,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:11,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:11,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 07:18:11,542 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 07:18:11,542 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:11,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:11,543 INFO L85 PathProgramCache]: Analyzing trace with hash -138452950, now seen corresponding path program 1 times [2022-01-10 07:18:11,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:11,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686663924] [2022-01-10 07:18:11,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:11,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:11,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:11,545 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 07:18:11,547 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 07:18:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:11,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:18:11,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:12,021 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 07:18:12,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:12,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:12,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686663924] [2022-01-10 07:18:12,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686663924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:12,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:12,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:18:12,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455303002] [2022-01-10 07:18:12,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:12,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:18:12,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:12,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:18:12,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:18:12,023 INFO L87 Difference]: Start difference. First operand 174 states and 239 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:18:12,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:12,192 INFO L93 Difference]: Finished difference Result 298 states and 427 transitions. [2022-01-10 07:18:12,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:18:12,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 91 [2022-01-10 07:18:12,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:12,193 INFO L225 Difference]: With dead ends: 298 [2022-01-10 07:18:12,193 INFO L226 Difference]: Without dead ends: 174 [2022-01-10 07:18:12,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 07:18:12,195 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 36 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:12,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 443 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 12 Unchecked, 0.2s Time] [2022-01-10 07:18:12,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-10 07:18:12,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-01-10 07:18:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3757225433526012) internal successors, (238), 173 states have internal predecessors, (238), 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 07:18:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 238 transitions. [2022-01-10 07:18:12,203 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 238 transitions. Word has length 91 [2022-01-10 07:18:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:12,203 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 238 transitions. [2022-01-10 07:18:12,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:18:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 238 transitions. [2022-01-10 07:18:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 07:18:12,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:12,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:12,212 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 07:18:12,412 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 07:18:12,412 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:12,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:12,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1993125557, now seen corresponding path program 1 times [2022-01-10 07:18:12,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:12,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723250064] [2022-01-10 07:18:12,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:12,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:12,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:12,415 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 07:18:12,416 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 07:18:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:12,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:18:12,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:12,861 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 07:18:12,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:12,862 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:12,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723250064] [2022-01-10 07:18:12,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723250064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:12,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:12,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:18:12,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893994632] [2022-01-10 07:18:12,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:12,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:18:12,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:12,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:18:12,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:18:12,863 INFO L87 Difference]: Start difference. First operand 174 states and 238 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 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 07:18:12,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:12,958 INFO L93 Difference]: Finished difference Result 294 states and 421 transitions. [2022-01-10 07:18:12,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:18:12,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 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 92 [2022-01-10 07:18:12,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:12,960 INFO L225 Difference]: With dead ends: 294 [2022-01-10 07:18:12,960 INFO L226 Difference]: Without dead ends: 174 [2022-01-10 07:18:12,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 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 07:18:12,961 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 48 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:12,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 356 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2022-01-10 07:18:12,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-10 07:18:12,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-01-10 07:18:12,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.369942196531792) internal successors, (237), 173 states have internal predecessors, (237), 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 07:18:12,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 237 transitions. [2022-01-10 07:18:12,968 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 237 transitions. Word has length 92 [2022-01-10 07:18:12,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:12,968 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 237 transitions. [2022-01-10 07:18:12,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 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 07:18:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 237 transitions. [2022-01-10 07:18:12,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 07:18:12,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:12,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:12,978 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 07:18:13,178 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 07:18:13,178 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:13,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:13,179 INFO L85 PathProgramCache]: Analyzing trace with hash 40991254, now seen corresponding path program 1 times [2022-01-10 07:18:13,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:13,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804032067] [2022-01-10 07:18:13,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:13,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:13,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:13,180 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 07:18:13,182 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 07:18:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:13,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:18:13,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:13,604 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 07:18:13,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:13,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:13,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804032067] [2022-01-10 07:18:13,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804032067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:13,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:13,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:18:13,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912465820] [2022-01-10 07:18:13,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:13,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:18:13,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:13,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:18:13,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:18:13,606 INFO L87 Difference]: Start difference. First operand 174 states and 237 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 07:18:13,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:13,728 INFO L93 Difference]: Finished difference Result 290 states and 415 transitions. [2022-01-10 07:18:13,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:18:13,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 93 [2022-01-10 07:18:13,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:13,730 INFO L225 Difference]: With dead ends: 290 [2022-01-10 07:18:13,730 INFO L226 Difference]: Without dead ends: 174 [2022-01-10 07:18:13,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 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 07:18:13,731 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 26 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:13,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 541 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 176 Invalid, 0 Unknown, 103 Unchecked, 0.1s Time] [2022-01-10 07:18:13,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-10 07:18:13,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-01-10 07:18:13,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3641618497109826) internal successors, (236), 173 states have internal predecessors, (236), 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 07:18:13,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 236 transitions. [2022-01-10 07:18:13,737 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 236 transitions. Word has length 93 [2022-01-10 07:18:13,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:13,737 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 236 transitions. [2022-01-10 07:18:13,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 07:18:13,737 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 236 transitions. [2022-01-10 07:18:13,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 07:18:13,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:13,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:13,759 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 07:18:13,945 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 07:18:13,945 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:13,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:13,946 INFO L85 PathProgramCache]: Analyzing trace with hash 704360009, now seen corresponding path program 1 times [2022-01-10 07:18:13,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:13,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808541625] [2022-01-10 07:18:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:13,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:13,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:13,947 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 07:18:13,948 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 07:18:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:14,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:18:14,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:14,364 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 07:18:14,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:14,365 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:14,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808541625] [2022-01-10 07:18:14,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808541625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:14,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:14,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:18:14,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904441188] [2022-01-10 07:18:14,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:14,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:18:14,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:14,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:18:14,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:18:14,375 INFO L87 Difference]: Start difference. First operand 174 states and 236 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 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 07:18:14,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:14,446 INFO L93 Difference]: Finished difference Result 286 states and 409 transitions. [2022-01-10 07:18:14,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:18:14,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 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 94 [2022-01-10 07:18:14,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:14,449 INFO L225 Difference]: With dead ends: 286 [2022-01-10 07:18:14,449 INFO L226 Difference]: Without dead ends: 174 [2022-01-10 07:18:14,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 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 07:18:14,452 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 36 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:14,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 362 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2022-01-10 07:18:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-10 07:18:14,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-01-10 07:18:14,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3583815028901733) internal successors, (235), 173 states have internal predecessors, (235), 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 07:18:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 235 transitions. [2022-01-10 07:18:14,464 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 235 transitions. Word has length 94 [2022-01-10 07:18:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:14,464 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 235 transitions. [2022-01-10 07:18:14,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 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 07:18:14,464 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 235 transitions. [2022-01-10 07:18:14,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 07:18:14,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:14,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:14,475 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 07:18:14,675 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 07:18:14,677 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:14,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:14,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1445732094, now seen corresponding path program 1 times [2022-01-10 07:18:14,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:14,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931964515] [2022-01-10 07:18:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:14,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:14,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:14,679 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 07:18:14,679 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 07:18:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:14,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:18:14,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:15,143 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 07:18:15,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:15,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:15,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931964515] [2022-01-10 07:18:15,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931964515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:15,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:15,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:18:15,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793300326] [2022-01-10 07:18:15,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:15,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:18:15,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:15,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:18:15,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:18:15,145 INFO L87 Difference]: Start difference. First operand 174 states and 235 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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 07:18:15,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:15,254 INFO L93 Difference]: Finished difference Result 282 states and 403 transitions. [2022-01-10 07:18:15,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:18:15,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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 95 [2022-01-10 07:18:15,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:15,255 INFO L225 Difference]: With dead ends: 282 [2022-01-10 07:18:15,255 INFO L226 Difference]: Without dead ends: 174 [2022-01-10 07:18:15,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 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 07:18:15,256 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 24 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:15,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 543 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 101 Unchecked, 0.1s Time] [2022-01-10 07:18:15,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-10 07:18:15,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-01-10 07:18:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3526011560693643) internal successors, (234), 173 states have internal predecessors, (234), 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 07:18:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 234 transitions. [2022-01-10 07:18:15,259 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 234 transitions. Word has length 95 [2022-01-10 07:18:15,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:15,260 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 234 transitions. [2022-01-10 07:18:15,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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 07:18:15,260 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 234 transitions. [2022-01-10 07:18:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 07:18:15,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:15,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:15,281 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 07:18:15,468 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 07:18:15,468 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:15,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:15,469 INFO L85 PathProgramCache]: Analyzing trace with hash 947478749, now seen corresponding path program 1 times [2022-01-10 07:18:15,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:15,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441518154] [2022-01-10 07:18:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:15,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:15,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:15,470 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 07:18:15,471 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 07:18:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:15,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:18:15,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:16,122 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 07:18:16,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:16,123 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:16,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441518154] [2022-01-10 07:18:16,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441518154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:16,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:16,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:18:16,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120680659] [2022-01-10 07:18:16,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:16,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:18:16,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:18:16,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:18:16,124 INFO L87 Difference]: Start difference. First operand 174 states and 234 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 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 07:18:16,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:16,210 INFO L93 Difference]: Finished difference Result 271 states and 388 transitions. [2022-01-10 07:18:16,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:18:16,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 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 07:18:16,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:16,212 INFO L225 Difference]: With dead ends: 271 [2022-01-10 07:18:16,212 INFO L226 Difference]: Without dead ends: 174 [2022-01-10 07:18:16,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:18:16,213 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 35 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:16,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 506 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 38 Unchecked, 0.1s Time] [2022-01-10 07:18:16,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-10 07:18:16,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-01-10 07:18:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.346820809248555) internal successors, (233), 173 states have internal predecessors, (233), 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 07:18:16,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 233 transitions. [2022-01-10 07:18:16,217 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 233 transitions. Word has length 96 [2022-01-10 07:18:16,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:16,218 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 233 transitions. [2022-01-10 07:18:16,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 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 07:18:16,218 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 233 transitions. [2022-01-10 07:18:16,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 07:18:16,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:16,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:16,241 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 07:18:16,444 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 07:18:16,444 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:16,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:16,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2118504176, now seen corresponding path program 1 times [2022-01-10 07:18:16,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:16,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250646837] [2022-01-10 07:18:16,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:16,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:16,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:16,447 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 07:18:16,448 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 07:18:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:16,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:18:16,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:17,454 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 07:18:17,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:17,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:17,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250646837] [2022-01-10 07:18:17,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250646837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:17,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:17,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:18:17,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125982253] [2022-01-10 07:18:17,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:17,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:18:17,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:17,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:18:17,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:18:17,455 INFO L87 Difference]: Start difference. First operand 174 states and 233 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 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 07:18:17,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:17,544 INFO L93 Difference]: Finished difference Result 266 states and 379 transitions. [2022-01-10 07:18:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:18:17,544 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 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 97 [2022-01-10 07:18:17,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:17,545 INFO L225 Difference]: With dead ends: 266 [2022-01-10 07:18:17,545 INFO L226 Difference]: Without dead ends: 174 [2022-01-10 07:18:17,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:18:17,546 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 78 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 181 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:17,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 694 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 181 Unchecked, 0.0s Time] [2022-01-10 07:18:17,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-10 07:18:17,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-01-10 07:18:17,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3410404624277457) internal successors, (232), 173 states have internal predecessors, (232), 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 07:18:17,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2022-01-10 07:18:17,549 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 97 [2022-01-10 07:18:17,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:17,549 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2022-01-10 07:18:17,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 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 07:18:17,549 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2022-01-10 07:18:17,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 07:18:17,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:17,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:17,557 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 07:18:17,757 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 07:18:17,757 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:17,758 INFO L85 PathProgramCache]: Analyzing trace with hash 369699444, now seen corresponding path program 1 times [2022-01-10 07:18:17,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:17,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550475987] [2022-01-10 07:18:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:17,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:17,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:17,759 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 07:18:17,760 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 07:18:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:17,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:18:17,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:18,750 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 07:18:18,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:18,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:18,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550475987] [2022-01-10 07:18:18,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550475987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:18,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:18,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:18:18,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579035403] [2022-01-10 07:18:18,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:18,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:18:18,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:18,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:18:18,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:18:18,752 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 07:18:18,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:18,766 INFO L93 Difference]: Finished difference Result 261 states and 370 transitions. [2022-01-10 07:18:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:18:18,767 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 98 [2022-01-10 07:18:18,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:18,768 INFO L225 Difference]: With dead ends: 261 [2022-01-10 07:18:18,768 INFO L226 Difference]: Without dead ends: 174 [2022-01-10 07:18:18,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:18:18,769 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 53 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:18,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 723 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 175 Unchecked, 0.0s Time] [2022-01-10 07:18:18,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-10 07:18:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-01-10 07:18:18,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3352601156069364) internal successors, (231), 173 states have internal predecessors, (231), 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 07:18:18,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 231 transitions. [2022-01-10 07:18:18,777 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 231 transitions. Word has length 98 [2022-01-10 07:18:18,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:18,777 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 231 transitions. [2022-01-10 07:18:18,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 07:18:18,777 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 231 transitions. [2022-01-10 07:18:18,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 07:18:18,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:18,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:18,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 07:18:18,985 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 07:18:18,986 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:18,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:18,986 INFO L85 PathProgramCache]: Analyzing trace with hash 775749785, now seen corresponding path program 1 times [2022-01-10 07:18:18,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:18,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912155823] [2022-01-10 07:18:18,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:18,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:18,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:18,987 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 07:18:18,990 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 07:18:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:19,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:18:19,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:19,941 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 07:18:19,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:19,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:19,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912155823] [2022-01-10 07:18:19,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912155823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:19,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:19,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:18:19,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596440320] [2022-01-10 07:18:19,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:19,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:18:19,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:19,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:18:19,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:18:19,942 INFO L87 Difference]: Start difference. First operand 174 states and 231 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:18:20,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:20,018 INFO L93 Difference]: Finished difference Result 256 states and 361 transitions. [2022-01-10 07:18:20,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:18:20,018 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 99 [2022-01-10 07:18:20,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:20,019 INFO L225 Difference]: With dead ends: 256 [2022-01-10 07:18:20,019 INFO L226 Difference]: Without dead ends: 174 [2022-01-10 07:18:20,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:18:20,020 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 77 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:20,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 642 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 112 Unchecked, 0.1s Time] [2022-01-10 07:18:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-10 07:18:20,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-01-10 07:18:20,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.329479768786127) internal successors, (230), 173 states have internal predecessors, (230), 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 07:18:20,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 230 transitions. [2022-01-10 07:18:20,023 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 230 transitions. Word has length 99 [2022-01-10 07:18:20,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:20,024 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 230 transitions. [2022-01-10 07:18:20,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:18:20,024 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 230 transitions. [2022-01-10 07:18:20,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 07:18:20,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:20,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:20,033 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 07:18:20,231 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 07:18:20,231 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:20,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:20,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1893753227, now seen corresponding path program 1 times [2022-01-10 07:18:20,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:20,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142420611] [2022-01-10 07:18:20,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:20,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:20,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:20,233 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 07:18:20,234 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 07:18:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:20,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:18:20,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:21,099 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 07:18:21,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:21,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:21,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142420611] [2022-01-10 07:18:21,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142420611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:21,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:21,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:18:21,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826992727] [2022-01-10 07:18:21,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:21,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:18:21,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:18:21,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:18:21,101 INFO L87 Difference]: Start difference. First operand 174 states and 230 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 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 07:18:21,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:21,188 INFO L93 Difference]: Finished difference Result 251 states and 352 transitions. [2022-01-10 07:18:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:18:21,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 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 07:18:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:21,189 INFO L225 Difference]: With dead ends: 251 [2022-01-10 07:18:21,189 INFO L226 Difference]: Without dead ends: 174 [2022-01-10 07:18:21,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:18:21,190 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 53 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 329 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:21,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1012 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 329 Unchecked, 0.1s Time] [2022-01-10 07:18:21,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-10 07:18:21,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-01-10 07:18:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.323699421965318) internal successors, (229), 173 states have internal predecessors, (229), 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 07:18:21,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2022-01-10 07:18:21,194 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 100 [2022-01-10 07:18:21,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:21,194 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2022-01-10 07:18:21,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 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 07:18:21,194 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2022-01-10 07:18:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:18:21,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:21,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:21,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:18:21,395 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 07:18:21,395 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:21,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:21,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1682177218, now seen corresponding path program 1 times [2022-01-10 07:18:21,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:21,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191283952] [2022-01-10 07:18:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:21,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:21,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:21,397 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 07:18:21,398 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 07:18:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:21,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:18:21,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:22,306 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 07:18:22,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:22,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:22,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191283952] [2022-01-10 07:18:22,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191283952] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:22,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:22,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:18:22,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171473795] [2022-01-10 07:18:22,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:22,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:18:22,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:22,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:18:22,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:18:22,307 INFO L87 Difference]: Start difference. First operand 174 states and 229 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 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 07:18:22,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:22,365 INFO L93 Difference]: Finished difference Result 246 states and 343 transitions. [2022-01-10 07:18:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:18:22,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 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 101 [2022-01-10 07:18:22,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:22,367 INFO L225 Difference]: With dead ends: 246 [2022-01-10 07:18:22,367 INFO L226 Difference]: Without dead ends: 174 [2022-01-10 07:18:22,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:18:22,367 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 62 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:22,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 741 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 159 Unchecked, 0.0s Time] [2022-01-10 07:18:22,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-10 07:18:22,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-01-10 07:18:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3179190751445087) internal successors, (228), 173 states have internal predecessors, (228), 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 07:18:22,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 228 transitions. [2022-01-10 07:18:22,371 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 228 transitions. Word has length 101 [2022-01-10 07:18:22,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:22,372 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 228 transitions. [2022-01-10 07:18:22,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 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 07:18:22,372 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 228 transitions. [2022-01-10 07:18:22,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 07:18:22,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:22,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:22,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 07:18:22,572 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 07:18:22,573 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:22,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:22,573 INFO L85 PathProgramCache]: Analyzing trace with hash 50107938, now seen corresponding path program 1 times [2022-01-10 07:18:22,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:22,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42470981] [2022-01-10 07:18:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:22,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:22,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:22,575 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 07:18:22,576 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 07:18:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:22,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:18:22,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:23,823 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 07:18:23,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:23,823 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:23,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42470981] [2022-01-10 07:18:23,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42470981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:23,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:23,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:18:23,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925658846] [2022-01-10 07:18:23,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:23,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:18:23,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:23,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:18:23,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:18:23,824 INFO L87 Difference]: Start difference. First operand 174 states and 228 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 07:18:24,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:24,032 INFO L93 Difference]: Finished difference Result 752 states and 1130 transitions. [2022-01-10 07:18:24,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:18:24,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 102 [2022-01-10 07:18:24,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:24,035 INFO L225 Difference]: With dead ends: 752 [2022-01-10 07:18:24,035 INFO L226 Difference]: Without dead ends: 681 [2022-01-10 07:18:24,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 95 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 07:18:24,035 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 1238 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:24,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 1613 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:18:24,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-01-10 07:18:24,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 339. [2022-01-10 07:18:24,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.4378698224852071) internal successors, (486), 338 states have internal predecessors, (486), 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 07:18:24,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 486 transitions. [2022-01-10 07:18:24,047 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 486 transitions. Word has length 102 [2022-01-10 07:18:24,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:24,047 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 486 transitions. [2022-01-10 07:18:24,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 07:18:24,047 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 486 transitions. [2022-01-10 07:18:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 07:18:24,048 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:24,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:24,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:18:24,254 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 07:18:24,255 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:24,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:24,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1900173012, now seen corresponding path program 1 times [2022-01-10 07:18:24,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:24,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535746102] [2022-01-10 07:18:24,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:24,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:24,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:24,256 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 07:18:24,258 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 07:18:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:24,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:18:24,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:25,420 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 07:18:25,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:25,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:25,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535746102] [2022-01-10 07:18:25,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535746102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:25,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:25,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:18:25,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470370435] [2022-01-10 07:18:25,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:25,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:18:25,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:25,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:18:25,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:18:25,422 INFO L87 Difference]: Start difference. First operand 339 states and 486 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 07:18:25,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:25,609 INFO L93 Difference]: Finished difference Result 891 states and 1349 transitions. [2022-01-10 07:18:25,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:18:25,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 103 [2022-01-10 07:18:25,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:25,613 INFO L225 Difference]: With dead ends: 891 [2022-01-10 07:18:25,613 INFO L226 Difference]: Without dead ends: 820 [2022-01-10 07:18:25,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:18:25,613 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 941 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:25,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [941 Valid, 1706 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:18:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2022-01-10 07:18:25,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 498. [2022-01-10 07:18:25,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 1.4748490945674044) internal successors, (733), 497 states have internal predecessors, (733), 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 07:18:25,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 733 transitions. [2022-01-10 07:18:25,631 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 733 transitions. Word has length 103 [2022-01-10 07:18:25,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:25,631 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 733 transitions. [2022-01-10 07:18:25,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 07:18:25,631 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 733 transitions. [2022-01-10 07:18:25,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 07:18:25,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:25,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:25,639 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 07:18:25,839 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 07:18:25,839 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:25,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:25,839 INFO L85 PathProgramCache]: Analyzing trace with hash -994018774, now seen corresponding path program 1 times [2022-01-10 07:18:25,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:25,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322405060] [2022-01-10 07:18:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:25,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:25,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:25,841 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 07:18:25,841 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 07:18:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:25,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:18:25,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:26,959 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 07:18:26,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:26,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:26,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322405060] [2022-01-10 07:18:26,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322405060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:26,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:26,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:18:26,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471598595] [2022-01-10 07:18:26,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:26,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:18:26,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:26,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:18:26,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:18:26,961 INFO L87 Difference]: Start difference. First operand 498 states and 733 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 07:18:27,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:27,168 INFO L93 Difference]: Finished difference Result 976 states and 1480 transitions. [2022-01-10 07:18:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:18:27,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 103 [2022-01-10 07:18:27,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:27,171 INFO L225 Difference]: With dead ends: 976 [2022-01-10 07:18:27,171 INFO L226 Difference]: Without dead ends: 905 [2022-01-10 07:18:27,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 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 07:18:27,172 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 1393 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:27,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1393 Valid, 1529 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:18:27,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-01-10 07:18:27,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 578. [2022-01-10 07:18:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 1.48526863084922) internal successors, (857), 577 states have internal predecessors, (857), 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 07:18:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 857 transitions. [2022-01-10 07:18:27,200 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 857 transitions. Word has length 103 [2022-01-10 07:18:27,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:27,200 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 857 transitions. [2022-01-10 07:18:27,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 07:18:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 857 transitions. [2022-01-10 07:18:27,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 07:18:27,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:27,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:27,210 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 07:18:27,408 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 07:18:27,408 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:27,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:27,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1326048745, now seen corresponding path program 1 times [2022-01-10 07:18:27,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:27,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350860230] [2022-01-10 07:18:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:27,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:27,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:27,410 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 07:18:27,412 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 07:18:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:27,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:18:27,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:28,507 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 07:18:28,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:28,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:28,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350860230] [2022-01-10 07:18:28,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350860230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:28,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:28,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:18:28,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49584306] [2022-01-10 07:18:28,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:28,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:18:28,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:28,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:18:28,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:18:28,509 INFO L87 Difference]: Start difference. First operand 578 states and 857 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 07:18:28,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:28,679 INFO L93 Difference]: Finished difference Result 1051 states and 1597 transitions. [2022-01-10 07:18:28,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:18:28,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 103 [2022-01-10 07:18:28,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:28,682 INFO L225 Difference]: With dead ends: 1051 [2022-01-10 07:18:28,682 INFO L226 Difference]: Without dead ends: 980 [2022-01-10 07:18:28,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 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 07:18:28,683 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 1085 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:28,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1085 Valid, 1578 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:18:28,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-01-10 07:18:28,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 653. [2022-01-10 07:18:28,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 1.4938650306748467) internal successors, (974), 652 states have internal predecessors, (974), 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 07:18:28,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 974 transitions. [2022-01-10 07:18:28,701 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 974 transitions. Word has length 103 [2022-01-10 07:18:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:28,701 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 974 transitions. [2022-01-10 07:18:28,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 07:18:28,701 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 974 transitions. [2022-01-10 07:18:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 07:18:28,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:28,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:28,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 07:18:28,909 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 07:18:28,909 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:28,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash -370300632, now seen corresponding path program 1 times [2022-01-10 07:18:28,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:28,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840199063] [2022-01-10 07:18:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:28,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:28,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:28,911 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 07:18:28,912 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 07:18:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:29,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:18:29,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:29,991 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 07:18:29,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:29,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:29,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840199063] [2022-01-10 07:18:29,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840199063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:29,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:29,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:18:29,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664656020] [2022-01-10 07:18:29,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:29,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:18:29,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:29,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:18:29,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:18:29,992 INFO L87 Difference]: Start difference. First operand 653 states and 974 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 07:18:30,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:30,193 INFO L93 Difference]: Finished difference Result 1120 states and 1706 transitions. [2022-01-10 07:18:30,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:18:30,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 103 [2022-01-10 07:18:30,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:30,196 INFO L225 Difference]: With dead ends: 1120 [2022-01-10 07:18:30,196 INFO L226 Difference]: Without dead ends: 911 [2022-01-10 07:18:30,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 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 07:18:30,197 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 968 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:30,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 1650 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:18:30,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2022-01-10 07:18:30,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 584. [2022-01-10 07:18:30,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 1.4785591766723842) internal successors, (862), 583 states have internal predecessors, (862), 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 07:18:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 862 transitions. [2022-01-10 07:18:30,213 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 862 transitions. Word has length 103 [2022-01-10 07:18:30,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:30,213 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 862 transitions. [2022-01-10 07:18:30,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 07:18:30,213 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 862 transitions. [2022-01-10 07:18:30,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 07:18:30,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:30,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:30,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 07:18:30,421 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 07:18:30,421 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:30,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:30,421 INFO L85 PathProgramCache]: Analyzing trace with hash 298427883, now seen corresponding path program 1 times [2022-01-10 07:18:30,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:30,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702087262] [2022-01-10 07:18:30,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:30,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:30,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:30,423 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 07:18:30,424 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 07:18:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:30,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:18:30,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:31,545 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 07:18:31,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:31,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:31,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702087262] [2022-01-10 07:18:31,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702087262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:31,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:31,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:18:31,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042606526] [2022-01-10 07:18:31,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:31,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:18:31,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:31,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:18:31,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:18:31,548 INFO L87 Difference]: Start difference. First operand 584 states and 862 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 07:18:31,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:31,766 INFO L93 Difference]: Finished difference Result 1062 states and 1609 transitions. [2022-01-10 07:18:31,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:18:31,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 103 [2022-01-10 07:18:31,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:31,774 INFO L225 Difference]: With dead ends: 1062 [2022-01-10 07:18:31,774 INFO L226 Difference]: Without dead ends: 991 [2022-01-10 07:18:31,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 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 07:18:31,775 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 910 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:31,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [910 Valid, 2431 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:18:31,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-01-10 07:18:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 669. [2022-01-10 07:18:31,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.4865269461077844) internal successors, (993), 668 states have internal predecessors, (993), 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 07:18:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 993 transitions. [2022-01-10 07:18:31,792 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 993 transitions. Word has length 103 [2022-01-10 07:18:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:31,792 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 993 transitions. [2022-01-10 07:18:31,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 07:18:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 993 transitions. [2022-01-10 07:18:31,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 07:18:31,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:31,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:31,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-01-10 07:18:32,002 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 07:18:32,002 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:32,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:32,002 INFO L85 PathProgramCache]: Analyzing trace with hash 907330541, now seen corresponding path program 1 times [2022-01-10 07:18:32,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:32,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026547707] [2022-01-10 07:18:32,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:32,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:32,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:32,004 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 07:18:32,005 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 07:18:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:32,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:18:32,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:33,073 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 07:18:33,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:33,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:33,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026547707] [2022-01-10 07:18:33,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026547707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:33,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:33,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:18:33,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624433476] [2022-01-10 07:18:33,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:33,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:18:33,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:33,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:18:33,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:18:33,075 INFO L87 Difference]: Start difference. First operand 669 states and 993 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 07:18:33,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:33,250 INFO L93 Difference]: Finished difference Result 1152 states and 1747 transitions. [2022-01-10 07:18:33,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:18:33,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 103 [2022-01-10 07:18:33,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:33,254 INFO L225 Difference]: With dead ends: 1152 [2022-01-10 07:18:33,254 INFO L226 Difference]: Without dead ends: 1081 [2022-01-10 07:18:33,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 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 07:18:33,255 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 1042 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:33,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 1855 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:18:33,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-01-10 07:18:33,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 759. [2022-01-10 07:18:33,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 1.492084432717678) internal successors, (1131), 758 states have internal predecessors, (1131), 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 07:18:33,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1131 transitions. [2022-01-10 07:18:33,286 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1131 transitions. Word has length 103 [2022-01-10 07:18:33,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:33,286 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1131 transitions. [2022-01-10 07:18:33,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 07:18:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1131 transitions. [2022-01-10 07:18:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 07:18:33,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:33,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:33,296 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 07:18:33,494 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 07:18:33,494 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:33,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:33,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1323186080, now seen corresponding path program 1 times [2022-01-10 07:18:33,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:33,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613394005] [2022-01-10 07:18:33,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:33,495 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:33,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:33,496 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 07:18:33,499 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 07:18:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:33,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 07:18:33,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:34,658 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 07:18:34,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:34,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:34,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613394005] [2022-01-10 07:18:34,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613394005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:34,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:34,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 07:18:34,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770969867] [2022-01-10 07:18:34,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:34,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 07:18:34,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:34,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 07:18:34,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:18:34,660 INFO L87 Difference]: Start difference. First operand 759 states and 1131 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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 07:18:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:34,721 INFO L93 Difference]: Finished difference Result 915 states and 1375 transitions. [2022-01-10 07:18:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 07:18:34,722 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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 104 [2022-01-10 07:18:34,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:34,724 INFO L225 Difference]: With dead ends: 915 [2022-01-10 07:18:34,724 INFO L226 Difference]: Without dead ends: 733 [2022-01-10 07:18:34,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-10 07:18:34,725 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 26 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:34,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 1682 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 102 Unchecked, 0.0s Time] [2022-01-10 07:18:34,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-01-10 07:18:34,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2022-01-10 07:18:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 732 states have (on average 1.4931693989071038) internal successors, (1093), 732 states have internal predecessors, (1093), 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 07:18:34,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1093 transitions. [2022-01-10 07:18:34,747 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1093 transitions. Word has length 104 [2022-01-10 07:18:34,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:34,747 INFO L470 AbstractCegarLoop]: Abstraction has 733 states and 1093 transitions. [2022-01-10 07:18:34,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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 07:18:34,747 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1093 transitions. [2022-01-10 07:18:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 07:18:34,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:34,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:34,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:18:34,969 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 07:18:34,969 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:34,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:34,970 INFO L85 PathProgramCache]: Analyzing trace with hash -977108255, now seen corresponding path program 1 times [2022-01-10 07:18:34,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:34,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313932804] [2022-01-10 07:18:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:34,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:34,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:34,971 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 07:18:34,971 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 07:18:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:35,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-10 07:18:35,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:42,261 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 07:18:42,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:42,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:42,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313932804] [2022-01-10 07:18:42,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313932804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:42,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:42,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-10 07:18:42,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525284424] [2022-01-10 07:18:42,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:42,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-10 07:18:42,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:42,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-10 07:18:42,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1073, Unknown=0, NotChecked=0, Total=1260 [2022-01-10 07:18:42,263 INFO L87 Difference]: Start difference. First operand 733 states and 1093 transitions. Second operand has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 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 07:18:42,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:42,514 INFO L93 Difference]: Finished difference Result 903 states and 1355 transitions. [2022-01-10 07:18:42,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-10 07:18:42,515 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 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 104 [2022-01-10 07:18:42,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:42,517 INFO L225 Difference]: With dead ends: 903 [2022-01-10 07:18:42,517 INFO L226 Difference]: Without dead ends: 746 [2022-01-10 07:18:42,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=205, Invalid=1127, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 07:18:42,518 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 91 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1403 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:42,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 2592 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 157 Invalid, 0 Unknown, 1403 Unchecked, 0.2s Time] [2022-01-10 07:18:42,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-01-10 07:18:42,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2022-01-10 07:18:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 745 states have (on average 1.4885906040268457) internal successors, (1109), 745 states have internal predecessors, (1109), 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 07:18:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1109 transitions. [2022-01-10 07:18:42,535 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1109 transitions. Word has length 104 [2022-01-10 07:18:42,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:42,535 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 1109 transitions. [2022-01-10 07:18:42,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 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 07:18:42,535 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1109 transitions. [2022-01-10 07:18:42,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 07:18:42,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:42,536 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, 1, 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 07:18:42,543 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 07:18:42,743 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 07:18:42,743 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:42,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:42,743 INFO L85 PathProgramCache]: Analyzing trace with hash 529158721, now seen corresponding path program 1 times [2022-01-10 07:18:42,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:42,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392672158] [2022-01-10 07:18:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:42,744 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:42,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:42,745 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 07:18:42,745 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 07:18:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:42,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 46 conjunts are in the unsatisfiable core [2022-01-10 07:18:42,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:54,887 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 07:18:54,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:54,887 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:54,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392672158] [2022-01-10 07:18:54,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392672158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:54,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:54,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-10 07:18:54,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712140609] [2022-01-10 07:18:54,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:54,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-10 07:18:54,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-10 07:18:54,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1334, Unknown=0, NotChecked=0, Total=1560 [2022-01-10 07:18:54,889 INFO L87 Difference]: Start difference. First operand 746 states and 1109 transitions. Second operand has 40 states, 40 states have (on average 2.6) internal successors, (104), 40 states have internal predecessors, (104), 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 07:18:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:55,167 INFO L93 Difference]: Finished difference Result 898 states and 1347 transitions. [2022-01-10 07:18:55,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-10 07:18:55,169 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.6) internal successors, (104), 40 states have internal predecessors, (104), 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 104 [2022-01-10 07:18:55,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:55,171 INFO L225 Difference]: With dead ends: 898 [2022-01-10 07:18:55,171 INFO L226 Difference]: Without dead ends: 751 [2022-01-10 07:18:55,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=246, Invalid=1394, Unknown=0, NotChecked=0, Total=1640 [2022-01-10 07:18:55,172 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 92 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1350 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:55,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 2788 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 1350 Unchecked, 0.2s Time] [2022-01-10 07:18:55,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-01-10 07:18:55,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2022-01-10 07:18:55,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 1.4866666666666666) internal successors, (1115), 750 states have internal predecessors, (1115), 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 07:18:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1115 transitions. [2022-01-10 07:18:55,190 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1115 transitions. Word has length 104 [2022-01-10 07:18:55,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:55,190 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 1115 transitions. [2022-01-10 07:18:55,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.6) internal successors, (104), 40 states have internal predecessors, (104), 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 07:18:55,190 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1115 transitions. [2022-01-10 07:18:55,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 07:18:55,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:55,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:55,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-01-10 07:18:55,397 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 07:18:55,398 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:55,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:55,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1877984584, now seen corresponding path program 1 times [2022-01-10 07:18:55,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:55,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020736723] [2022-01-10 07:18:55,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:55,398 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:55,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:55,399 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 07:18:55,400 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 07:18:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:55,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:18:55,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:18:55,724 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 07:18:55,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:18:55,724 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:18:55,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020736723] [2022-01-10 07:18:55,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020736723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:18:55,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:18:55,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:18:55,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470157704] [2022-01-10 07:18:55,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:18:55,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:18:55,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:18:55,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:18:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:18:55,725 INFO L87 Difference]: Start difference. First operand 751 states and 1115 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 07:18:55,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:18:55,752 INFO L93 Difference]: Finished difference Result 1386 states and 2114 transitions. [2022-01-10 07:18:55,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:18:55,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 104 [2022-01-10 07:18:55,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:18:55,754 INFO L225 Difference]: With dead ends: 1386 [2022-01-10 07:18:55,754 INFO L226 Difference]: Without dead ends: 832 [2022-01-10 07:18:55,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:18:55,755 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 110 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:18:55,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 541 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2022-01-10 07:18:55,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-01-10 07:18:55,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 829. [2022-01-10 07:18:55,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 828 states have (on average 1.4830917874396135) internal successors, (1228), 828 states have internal predecessors, (1228), 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 07:18:55,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1228 transitions. [2022-01-10 07:18:55,776 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1228 transitions. Word has length 104 [2022-01-10 07:18:55,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:18:55,777 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 1228 transitions. [2022-01-10 07:18:55,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 07:18:55,777 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1228 transitions. [2022-01-10 07:18:55,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 07:18:55,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:18:55,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:18:55,785 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 07:18:55,984 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 07:18:55,984 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:18:55,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:18:55,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1886035071, now seen corresponding path program 1 times [2022-01-10 07:18:55,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:18:55,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124583247] [2022-01-10 07:18:55,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:18:55,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:18:55,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:18:55,987 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 07:18:55,987 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 07:18:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:18:56,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 46 conjunts are in the unsatisfiable core [2022-01-10 07:18:56,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:02,297 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 07:19:02,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:02,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:02,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124583247] [2022-01-10 07:19:02,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124583247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:02,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:02,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-10 07:19:02,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069848417] [2022-01-10 07:19:02,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:02,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-10 07:19:02,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:02,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-10 07:19:02,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1042, Unknown=0, NotChecked=0, Total=1260 [2022-01-10 07:19:02,299 INFO L87 Difference]: Start difference. First operand 829 states and 1228 transitions. Second operand has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 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 07:19:02,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:02,501 INFO L93 Difference]: Finished difference Result 1060 states and 1587 transitions. [2022-01-10 07:19:02,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-10 07:19:02,501 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 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 104 [2022-01-10 07:19:02,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:02,503 INFO L225 Difference]: With dead ends: 1060 [2022-01-10 07:19:02,503 INFO L226 Difference]: Without dead ends: 830 [2022-01-10 07:19:02,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=238, Invalid=1094, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 07:19:02,504 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 150 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1253 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:02,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 2063 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 1253 Unchecked, 0.1s Time] [2022-01-10 07:19:02,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-01-10 07:19:02,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2022-01-10 07:19:02,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 1.482509047044632) internal successors, (1229), 829 states have internal predecessors, (1229), 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 07:19:02,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1229 transitions. [2022-01-10 07:19:02,526 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1229 transitions. Word has length 104 [2022-01-10 07:19:02,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:02,526 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 1229 transitions. [2022-01-10 07:19:02,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 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 07:19:02,526 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1229 transitions. [2022-01-10 07:19:02,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 07:19:02,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:02,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:19:02,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:19:02,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:19:02,733 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:02,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:02,734 INFO L85 PathProgramCache]: Analyzing trace with hash -189921857, now seen corresponding path program 1 times [2022-01-10 07:19:02,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:02,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779346889] [2022-01-10 07:19:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:02,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:02,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:02,735 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:02,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:19:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:02,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:19:02,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:03,432 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 07:19:03,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:03,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:03,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779346889] [2022-01-10 07:19:03,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779346889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:03,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:03,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:19:03,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650617118] [2022-01-10 07:19:03,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:03,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:19:03,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:03,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:19:03,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:19:03,433 INFO L87 Difference]: Start difference. First operand 830 states and 1229 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 07:19:03,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:03,456 INFO L93 Difference]: Finished difference Result 1041 states and 1561 transitions. [2022-01-10 07:19:03,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:19:03,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 104 [2022-01-10 07:19:03,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:03,459 INFO L225 Difference]: With dead ends: 1041 [2022-01-10 07:19:03,459 INFO L226 Difference]: Without dead ends: 796 [2022-01-10 07:19:03,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:19:03,460 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 41 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:03,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 940 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 49 Unchecked, 0.0s Time] [2022-01-10 07:19:03,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-01-10 07:19:03,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 796. [2022-01-10 07:19:03,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 1.4880503144654087) internal successors, (1183), 795 states have internal predecessors, (1183), 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 07:19:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1183 transitions. [2022-01-10 07:19:03,479 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1183 transitions. Word has length 104 [2022-01-10 07:19:03,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:03,479 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 1183 transitions. [2022-01-10 07:19:03,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 07:19:03,479 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1183 transitions. [2022-01-10 07:19:03,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 07:19:03,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:03,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:19:03,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:19:03,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:19:03,687 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:03,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:03,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1844155757, now seen corresponding path program 1 times [2022-01-10 07:19:03,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:03,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864442709] [2022-01-10 07:19:03,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:03,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:03,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:03,688 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:03,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:19:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:03,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 07:19:03,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:05,704 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 07:19:05,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:05,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:05,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864442709] [2022-01-10 07:19:05,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864442709] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:05,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:05,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-10 07:19:05,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299741361] [2022-01-10 07:19:05,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:05,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:19:05,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:05,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:19:05,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:19:05,705 INFO L87 Difference]: Start difference. First operand 796 states and 1183 transitions. Second operand has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 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 07:19:05,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:05,778 INFO L93 Difference]: Finished difference Result 1002 states and 1508 transitions. [2022-01-10 07:19:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 07:19:05,779 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 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 07:19:05,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:05,781 INFO L225 Difference]: With dead ends: 1002 [2022-01-10 07:19:05,781 INFO L226 Difference]: Without dead ends: 777 [2022-01-10 07:19:05,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-01-10 07:19:05,782 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 69 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 257 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:05,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1568 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 257 Unchecked, 0.0s Time] [2022-01-10 07:19:05,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2022-01-10 07:19:05,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 776. [2022-01-10 07:19:05,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 775 states have (on average 1.4903225806451612) internal successors, (1155), 775 states have internal predecessors, (1155), 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 07:19:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1155 transitions. [2022-01-10 07:19:05,800 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1155 transitions. Word has length 105 [2022-01-10 07:19:05,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:05,800 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 1155 transitions. [2022-01-10 07:19:05,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 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 07:19:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1155 transitions. [2022-01-10 07:19:05,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 07:19:05,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:05,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:19:05,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:19:06,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:19:06,008 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:06,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:06,008 INFO L85 PathProgramCache]: Analyzing trace with hash -944544563, now seen corresponding path program 1 times [2022-01-10 07:19:06,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:06,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90842538] [2022-01-10 07:19:06,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:06,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:06,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:06,010 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:06,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:19:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:06,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 07:19:06,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:08,009 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 07:19:08,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:08,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:08,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90842538] [2022-01-10 07:19:08,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90842538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:08,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:08,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-10 07:19:08,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301401991] [2022-01-10 07:19:08,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:08,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:19:08,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:08,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:19:08,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:19:08,013 INFO L87 Difference]: Start difference. First operand 776 states and 1155 transitions. Second operand has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 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 07:19:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:08,103 INFO L93 Difference]: Finished difference Result 977 states and 1473 transitions. [2022-01-10 07:19:08,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 07:19:08,104 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 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 07:19:08,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:08,106 INFO L225 Difference]: With dead ends: 977 [2022-01-10 07:19:08,106 INFO L226 Difference]: Without dead ends: 762 [2022-01-10 07:19:08,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-01-10 07:19:08,107 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 53 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:08,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1721 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 274 Unchecked, 0.0s Time] [2022-01-10 07:19:08,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-01-10 07:19:08,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 753. [2022-01-10 07:19:08,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 1.4946808510638299) internal successors, (1124), 752 states have internal predecessors, (1124), 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 07:19:08,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1124 transitions. [2022-01-10 07:19:08,124 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1124 transitions. Word has length 105 [2022-01-10 07:19:08,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:08,124 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1124 transitions. [2022-01-10 07:19:08,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 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 07:19:08,124 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1124 transitions. [2022-01-10 07:19:08,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 07:19:08,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:08,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:19:08,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 07:19:08,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:19:08,332 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:08,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:08,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1558947083, now seen corresponding path program 1 times [2022-01-10 07:19:08,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:08,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660770541] [2022-01-10 07:19:08,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:08,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:08,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:08,334 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:08,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:19:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:08,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 07:19:08,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:09,442 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 07:19:09,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:09,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:09,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660770541] [2022-01-10 07:19:09,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660770541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:09,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:09,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 07:19:09,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964715362] [2022-01-10 07:19:09,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:09,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 07:19:09,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:09,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 07:19:09,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:19:09,444 INFO L87 Difference]: Start difference. First operand 753 states and 1124 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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 07:19:09,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:09,492 INFO L93 Difference]: Finished difference Result 893 states and 1346 transitions. [2022-01-10 07:19:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 07:19:09,492 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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 07:19:09,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:09,494 INFO L225 Difference]: With dead ends: 893 [2022-01-10 07:19:09,494 INFO L226 Difference]: Without dead ends: 673 [2022-01-10 07:19:09,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-10 07:19:09,495 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 28 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:09,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 1480 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 93 Unchecked, 0.0s Time] [2022-01-10 07:19:09,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-01-10 07:19:09,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 664. [2022-01-10 07:19:09,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 1.497737556561086) internal successors, (993), 663 states have internal predecessors, (993), 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 07:19:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 993 transitions. [2022-01-10 07:19:09,510 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 993 transitions. Word has length 105 [2022-01-10 07:19:09,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:09,510 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 993 transitions. [2022-01-10 07:19:09,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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 07:19:09,510 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 993 transitions. [2022-01-10 07:19:09,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 07:19:09,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:09,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:19:09,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-01-10 07:19:09,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:19:09,718 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:09,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:09,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1357510990, now seen corresponding path program 1 times [2022-01-10 07:19:09,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:09,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845449632] [2022-01-10 07:19:09,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:09,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:09,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:09,720 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:09,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 07:19:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:09,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:19:09,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:09,960 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 07:19:09,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:09,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:09,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845449632] [2022-01-10 07:19:09,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845449632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:09,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:09,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:19:09,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034486072] [2022-01-10 07:19:09,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:09,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:19:09,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:09,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:19:09,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:19:09,962 INFO L87 Difference]: Start difference. First operand 664 states and 993 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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 07:19:10,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:10,024 INFO L93 Difference]: Finished difference Result 1234 states and 1885 transitions. [2022-01-10 07:19:10,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:19:10,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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 07:19:10,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:10,028 INFO L225 Difference]: With dead ends: 1234 [2022-01-10 07:19:10,028 INFO L226 Difference]: Without dead ends: 1232 [2022-01-10 07:19:10,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 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 07:19:10,030 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 210 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:10,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 669 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:19:10,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-01-10 07:19:10,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 680. [2022-01-10 07:19:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 1.4860088365243005) internal successors, (1009), 679 states have internal predecessors, (1009), 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 07:19:10,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1009 transitions. [2022-01-10 07:19:10,053 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1009 transitions. Word has length 105 [2022-01-10 07:19:10,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:10,053 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 1009 transitions. [2022-01-10 07:19:10,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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 07:19:10,054 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1009 transitions. [2022-01-10 07:19:10,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 07:19:10,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:10,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:19:10,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 07:19:10,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:19:10,261 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:10,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:10,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1836352301, now seen corresponding path program 1 times [2022-01-10 07:19:10,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:10,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748073386] [2022-01-10 07:19:10,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:10,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:10,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:10,263 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:10,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 07:19:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:10,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-10 07:19:10,363 INFO L286 TraceCheckSpWp]: Computing forward predicates...