/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/array-programs/partial_mod_count_limited_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 03:49:58,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 03:49:58,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 03:49:58,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 03:49:58,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 03:49:58,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 03:49:58,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 03:49:58,556 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 03:49:58,581 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 03:49:58,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 03:49:58,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 03:49:58,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 03:49:58,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 03:49:58,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 03:49:58,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 03:49:58,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 03:49:58,583 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 03:49:58,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 03:49:58,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 03:49:58,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 03:49:58,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 03:49:58,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 03:49:58,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 03:49:58,584 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 03:49:58,584 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 03:49:58,584 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 03:49:58,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 03:49:58,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 03:49:58,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 03:49:58,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 03:49:58,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 03:49:58,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 03:49:58,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 03:49:58,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 03:49:58,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 03:49:58,586 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 03:49:58,586 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 03:49:58,586 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 03:49:58,586 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 03:49:58,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 03:49:58,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 03:49:58,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 03:49:58,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 03:49:58,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 03:49:58,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 03:49:58,780 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 03:49:58,783 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 03:49:58,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_limited_1.c [2022-01-10 03:49:58,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa8bce627/8ce5699e0b2d4eedbdb453104e9885ba/FLAGdbe4dc0a9 [2022-01-10 03:49:59,189 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 03:49:59,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_limited_1.c [2022-01-10 03:49:59,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa8bce627/8ce5699e0b2d4eedbdb453104e9885ba/FLAGdbe4dc0a9 [2022-01-10 03:49:59,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa8bce627/8ce5699e0b2d4eedbdb453104e9885ba [2022-01-10 03:49:59,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 03:49:59,206 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 03:49:59,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 03:49:59,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 03:49:59,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 03:49:59,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:49:59" (1/1) ... [2022-01-10 03:49:59,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629ae107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:49:59, skipping insertion in model container [2022-01-10 03:49:59,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:49:59" (1/1) ... [2022-01-10 03:49:59,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 03:49:59,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 03:49:59,356 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_limited_1.c[331,344] [2022-01-10 03:49:59,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 03:49:59,374 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 03:49:59,381 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_limited_1.c[331,344] [2022-01-10 03:49:59,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 03:49:59,397 INFO L208 MainTranslator]: Completed translation [2022-01-10 03:49:59,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:49:59 WrapperNode [2022-01-10 03:49:59,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 03:49:59,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 03:49:59,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 03:49:59,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 03:49:59,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:49:59" (1/1) ... [2022-01-10 03:49:59,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:49:59" (1/1) ... [2022-01-10 03:49:59,420 INFO L137 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2022-01-10 03:49:59,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 03:49:59,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 03:49:59,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 03:49:59,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 03:49:59,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:49:59" (1/1) ... [2022-01-10 03:49:59,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:49:59" (1/1) ... [2022-01-10 03:49:59,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:49:59" (1/1) ... [2022-01-10 03:49:59,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:49:59" (1/1) ... [2022-01-10 03:49:59,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:49:59" (1/1) ... [2022-01-10 03:49:59,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:49:59" (1/1) ... [2022-01-10 03:49:59,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:49:59" (1/1) ... [2022-01-10 03:49:59,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 03:49:59,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 03:49:59,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 03:49:59,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 03:49:59,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:49:59" (1/1) ... [2022-01-10 03:49:59,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 03:49:59,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 03:49:59,460 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 03:49:59,468 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 03:49:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 03:49:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 03:49:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 03:49:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 03:49:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 03:49:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 03:49:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 03:49:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 03:49:59,525 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 03:49:59,526 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 03:49:59,667 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 03:49:59,671 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 03:49:59,671 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 03:49:59,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:49:59 BoogieIcfgContainer [2022-01-10 03:49:59,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 03:49:59,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 03:49:59,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 03:49:59,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 03:49:59,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:49:59" (1/3) ... [2022-01-10 03:49:59,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4392c338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:49:59, skipping insertion in model container [2022-01-10 03:49:59,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:49:59" (2/3) ... [2022-01-10 03:49:59,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4392c338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:49:59, skipping insertion in model container [2022-01-10 03:49:59,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:49:59" (3/3) ... [2022-01-10 03:49:59,680 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_1.c [2022-01-10 03:49:59,683 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 03:49:59,684 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 03:49:59,735 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 03:49:59,740 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 03:49:59,740 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 03:49:59,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:49:59,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 03:49:59,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:49:59,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:49:59,769 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:49:59,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:49:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1939796378, now seen corresponding path program 1 times [2022-01-10 03:49:59,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:49:59,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723617123] [2022-01-10 03:49:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:49:59,805 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:49:59,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:49:59,808 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 03:49:59,810 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 03:49:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:49:59,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 03:49:59,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:49:59,962 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 03:49:59,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:49:59,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:49:59,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723617123] [2022-01-10 03:49:59,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723617123] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:49:59,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:49:59,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 03:49:59,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087684925] [2022-01-10 03:49:59,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:49:59,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 03:49:59,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:49:59,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 03:49:59,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 03:49:59,997 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:00,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:50:00,006 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2022-01-10 03:50:00,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 03:50:00,007 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-01-10 03:50:00,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:50:00,012 INFO L225 Difference]: With dead ends: 41 [2022-01-10 03:50:00,012 INFO L226 Difference]: Without dead ends: 18 [2022-01-10 03:50:00,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 03:50:00,016 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 03:50:00,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 03:50:00,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-10 03:50:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-10 03:50:00,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:00,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-01-10 03:50:00,037 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2022-01-10 03:50:00,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:50:00,037 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-01-10 03:50:00,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:00,037 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-01-10 03:50:00,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 03:50:00,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:50:00,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:50:00,047 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 03:50:00,242 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 03:50:00,243 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:50:00,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:50:00,244 INFO L85 PathProgramCache]: Analyzing trace with hash -54935082, now seen corresponding path program 1 times [2022-01-10 03:50:00,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:50:00,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680992496] [2022-01-10 03:50:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:50:00,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:50:00,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:50:00,246 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 03:50:00,248 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 03:50:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:50:00,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 03:50:00,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:50:00,378 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 03:50:00,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:50:00,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:50:00,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680992496] [2022-01-10 03:50:00,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680992496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:50:00,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:50:00,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 03:50:00,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233216112] [2022-01-10 03:50:00,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:50:00,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 03:50:00,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:50:00,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 03:50:00,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 03:50:00,388 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:00,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:50:00,521 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-01-10 03:50:00,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 03:50:00,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-01-10 03:50:00,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:50:00,526 INFO L225 Difference]: With dead ends: 40 [2022-01-10 03:50:00,526 INFO L226 Difference]: Without dead ends: 31 [2022-01-10 03:50:00,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 03:50:00,527 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 03:50:00,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 23 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 03:50:00,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-10 03:50:00,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2022-01-10 03:50:00,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-01-10 03:50:00,533 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2022-01-10 03:50:00,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:50:00,533 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-01-10 03:50:00,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:00,534 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-01-10 03:50:00,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 03:50:00,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:50:00,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:50:00,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 03:50:00,741 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 03:50:00,742 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:50:00,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:50:00,742 INFO L85 PathProgramCache]: Analyzing trace with hash 784383783, now seen corresponding path program 1 times [2022-01-10 03:50:00,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:50:00,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584071310] [2022-01-10 03:50:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:50:00,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:50:00,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:50:00,746 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 03:50:00,747 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 03:50:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:50:00,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 03:50:00,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:50:00,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 03:50:00,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:50:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 03:50:01,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:50:01,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584071310] [2022-01-10 03:50:01,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584071310] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:50:01,028 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:50:01,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-01-10 03:50:01,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056517557] [2022-01-10 03:50:01,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:50:01,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 03:50:01,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:50:01,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 03:50:01,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 03:50:01,033 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:01,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:50:01,297 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2022-01-10 03:50:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 03:50:01,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 16 [2022-01-10 03:50:01,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:50:01,298 INFO L225 Difference]: With dead ends: 68 [2022-01-10 03:50:01,298 INFO L226 Difference]: Without dead ends: 59 [2022-01-10 03:50:01,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-10 03:50:01,299 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 190 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 03:50:01,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 52 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 03:50:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-10 03:50:01,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2022-01-10 03:50:01,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:01,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2022-01-10 03:50:01,308 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 16 [2022-01-10 03:50:01,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:50:01,308 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2022-01-10 03:50:01,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:01,309 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2022-01-10 03:50:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-10 03:50:01,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:50:01,309 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:50:01,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 03:50:01,521 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 03:50:01,522 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:50:01,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:50:01,523 INFO L85 PathProgramCache]: Analyzing trace with hash -520466666, now seen corresponding path program 2 times [2022-01-10 03:50:01,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:50:01,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037086456] [2022-01-10 03:50:01,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 03:50:01,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:50:01,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:50:01,525 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 03:50:01,526 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 03:50:01,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 03:50:01,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 03:50:01,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 03:50:01,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:50:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 03:50:01,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:50:01,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:50:01,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037086456] [2022-01-10 03:50:01,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037086456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:50:01,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:50:01,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 03:50:01,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613279364] [2022-01-10 03:50:01,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:50:01,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 03:50:01,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:50:01,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 03:50:01,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 03:50:01,890 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:50:02,003 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2022-01-10 03:50:02,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 03:50:02,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 31 [2022-01-10 03:50:02,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:50:02,006 INFO L225 Difference]: With dead ends: 46 [2022-01-10 03:50:02,006 INFO L226 Difference]: Without dead ends: 44 [2022-01-10 03:50:02,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 03:50:02,007 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 03:50:02,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 34 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 03:50:02,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-10 03:50:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-01-10 03:50:02,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2022-01-10 03:50:02,012 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 31 [2022-01-10 03:50:02,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:50:02,012 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2022-01-10 03:50:02,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2022-01-10 03:50:02,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-10 03:50:02,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:50:02,013 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:50:02,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 03:50:02,220 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 03:50:02,221 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:50:02,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:50:02,221 INFO L85 PathProgramCache]: Analyzing trace with hash -520526248, now seen corresponding path program 1 times [2022-01-10 03:50:02,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:50:02,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916685330] [2022-01-10 03:50:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:50:02,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:50:02,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:50:02,223 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 03:50:02,224 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 03:50:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:50:02,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 03:50:02,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:50:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 03:50:02,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:50:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 03:50:02,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:50:02,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916685330] [2022-01-10 03:50:02,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916685330] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:50:02,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:50:02,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-01-10 03:50:02,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610481761] [2022-01-10 03:50:02,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:50:02,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 03:50:02,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:50:02,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 03:50:02,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-01-10 03:50:02,887 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:03,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:50:03,750 INFO L93 Difference]: Finished difference Result 211 states and 259 transitions. [2022-01-10 03:50:03,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 03:50:03,750 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 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 31 [2022-01-10 03:50:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:50:03,752 INFO L225 Difference]: With dead ends: 211 [2022-01-10 03:50:03,752 INFO L226 Difference]: Without dead ends: 196 [2022-01-10 03:50:03,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2022-01-10 03:50:03,753 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 449 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 03:50:03,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 272 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 03:50:03,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-01-10 03:50:03,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 70. [2022-01-10 03:50:03,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 69 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 03:50:03,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2022-01-10 03:50:03,761 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 31 [2022-01-10 03:50:03,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:50:03,761 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2022-01-10 03:50:03,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:03,761 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2022-01-10 03:50:03,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 03:50:03,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:50:03,762 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:50:03,777 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 03:50:03,975 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 03:50:03,975 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:50:03,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:50:03,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1117364680, now seen corresponding path program 2 times [2022-01-10 03:50:03,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:50:03,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293922891] [2022-01-10 03:50:03,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 03:50:03,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:50:03,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:50:03,978 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 03:50:03,979 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 03:50:04,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 03:50:04,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 03:50:04,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 03:50:04,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:50:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-01-10 03:50:04,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:50:04,458 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:50:04,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293922891] [2022-01-10 03:50:04,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293922891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:50:04,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:50:04,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 03:50:04,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010922407] [2022-01-10 03:50:04,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:50:04,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 03:50:04,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:50:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 03:50:04,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 03:50:04,459 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:50:04,572 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2022-01-10 03:50:04,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 03:50:04,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 61 [2022-01-10 03:50:04,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:50:04,573 INFO L225 Difference]: With dead ends: 83 [2022-01-10 03:50:04,573 INFO L226 Difference]: Without dead ends: 81 [2022-01-10 03:50:04,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 03:50:04,574 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 56 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 03:50:04,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 50 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 03:50:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-10 03:50:04,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2022-01-10 03:50:04,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3333333333333333) internal successors, (100), 75 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 03:50:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2022-01-10 03:50:04,579 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 61 [2022-01-10 03:50:04,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:50:04,579 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2022-01-10 03:50:04,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:04,580 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2022-01-10 03:50:04,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 03:50:04,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:50:04,585 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:50:04,594 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 03:50:04,792 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 03:50:04,793 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:50:04,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:50:04,793 INFO L85 PathProgramCache]: Analyzing trace with hash 824832363, now seen corresponding path program 1 times [2022-01-10 03:50:04,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:50:04,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892561611] [2022-01-10 03:50:04,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:50:04,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:50:04,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:50:04,795 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 03:50:04,796 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 03:50:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:50:05,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 03:50:05,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:50:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 03:50:06,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:50:06,630 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 03:50:06,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:50:06,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892561611] [2022-01-10 03:50:06,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892561611] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:50:06,630 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:50:06,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-01-10 03:50:06,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758824600] [2022-01-10 03:50:06,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:50:06,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-10 03:50:06,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:50:06,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-10 03:50:06,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-01-10 03:50:06,632 INFO L87 Difference]: Start difference. First operand 76 states and 100 transitions. Second operand has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:50:09,391 INFO L93 Difference]: Finished difference Result 568 states and 691 transitions. [2022-01-10 03:50:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-10 03:50:09,392 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 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 67 [2022-01-10 03:50:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:50:09,394 INFO L225 Difference]: With dead ends: 568 [2022-01-10 03:50:09,394 INFO L226 Difference]: Without dead ends: 547 [2022-01-10 03:50:09,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=479, Invalid=853, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 03:50:09,395 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 2148 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2148 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 03:50:09,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2148 Valid, 1173 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 03:50:09,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-01-10 03:50:09,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 136. [2022-01-10 03:50:09,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.362962962962963) internal successors, (184), 135 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:09,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 184 transitions. [2022-01-10 03:50:09,407 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 184 transitions. Word has length 67 [2022-01-10 03:50:09,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:50:09,407 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 184 transitions. [2022-01-10 03:50:09,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:09,407 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 184 transitions. [2022-01-10 03:50:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 03:50:09,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:50:09,408 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:50:09,429 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 03:50:09,627 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 03:50:09,628 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:50:09,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:50:09,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1889532203, now seen corresponding path program 2 times [2022-01-10 03:50:09,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:50:09,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550874563] [2022-01-10 03:50:09,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 03:50:09,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:50:09,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:50:09,630 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 03:50:09,631 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 03:50:12,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 03:50:12,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 03:50:12,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-10 03:50:12,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:50:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 03:50:13,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:50:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 03:50:14,760 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:50:14,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550874563] [2022-01-10 03:50:14,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550874563] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:50:14,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:50:14,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2022-01-10 03:50:14,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335320457] [2022-01-10 03:50:14,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:50:14,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-10 03:50:14,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:50:14,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-10 03:50:14,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-01-10 03:50:14,764 INFO L87 Difference]: Start difference. First operand 136 states and 184 transitions. Second operand has 50 states, 50 states have (on average 4.78) internal successors, (239), 49 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 03:50:25,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:50:25,897 INFO L93 Difference]: Finished difference Result 1168 states and 1423 transitions. [2022-01-10 03:50:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-10 03:50:25,897 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.78) internal successors, (239), 49 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) Word has length 127 [2022-01-10 03:50:25,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:50:25,902 INFO L225 Difference]: With dead ends: 1168 [2022-01-10 03:50:25,902 INFO L226 Difference]: Without dead ends: 1147 [2022-01-10 03:50:25,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1823, Invalid=3433, Unknown=0, NotChecked=0, Total=5256 [2022-01-10 03:50:25,904 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 6151 mSDsluCounter, 4731 mSDsCounter, 0 mSdLazyCounter, 3976 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6151 SdHoareTripleChecker+Valid, 4940 SdHoareTripleChecker+Invalid, 4678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 3976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-01-10 03:50:25,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6151 Valid, 4940 Invalid, 4678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [702 Valid, 3976 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-01-10 03:50:25,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-01-10 03:50:25,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 256. [2022-01-10 03:50:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.380392156862745) internal successors, (352), 255 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:25,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 352 transitions. [2022-01-10 03:50:25,921 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 352 transitions. Word has length 127 [2022-01-10 03:50:25,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:50:25,921 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 352 transitions. [2022-01-10 03:50:25,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.78) internal successors, (239), 49 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 03:50:25,922 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 352 transitions. [2022-01-10 03:50:25,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-01-10 03:50:25,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:50:25,924 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:50:25,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 03:50:26,135 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 03:50:26,136 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:50:26,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:50:26,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1454397269, now seen corresponding path program 3 times [2022-01-10 03:50:26,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:50:26,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462514781] [2022-01-10 03:50:26,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 03:50:26,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:50:26,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:50:26,138 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 03:50:26,140 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 03:50:26,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-10 03:50:26,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 03:50:26,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 03:50:26,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:50:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5221 trivial. 0 not checked. [2022-01-10 03:50:27,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:50:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5221 trivial. 0 not checked. [2022-01-10 03:50:39,907 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:50:39,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462514781] [2022-01-10 03:50:39,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462514781] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:50:39,907 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:50:39,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-01-10 03:50:39,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699111718] [2022-01-10 03:50:39,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:50:39,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 03:50:39,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:50:39,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 03:50:39,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-01-10 03:50:39,908 INFO L87 Difference]: Start difference. First operand 256 states and 352 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:42,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 03:50:45,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 03:50:47,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 03:50:48,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:50:48,099 INFO L93 Difference]: Finished difference Result 287 states and 391 transitions. [2022-01-10 03:50:48,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 03:50:48,104 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 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 247 [2022-01-10 03:50:48,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:50:48,105 INFO L225 Difference]: With dead ends: 287 [2022-01-10 03:50:48,105 INFO L226 Difference]: Without dead ends: 285 [2022-01-10 03:50:48,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2022-01-10 03:50:48,106 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 161 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 34 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-01-10 03:50:48,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 98 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 93 Invalid, 3 Unknown, 0 Unchecked, 6.6s Time] [2022-01-10 03:50:48,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-01-10 03:50:48,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 280. [2022-01-10 03:50:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.3620071684587813) internal successors, (380), 279 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:48,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 380 transitions. [2022-01-10 03:50:48,125 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 380 transitions. Word has length 247 [2022-01-10 03:50:48,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:50:48,125 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 380 transitions. [2022-01-10 03:50:48,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:50:48,125 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 380 transitions. [2022-01-10 03:50:48,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-01-10 03:50:48,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:50:48,128 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:50:48,137 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 03:50:48,337 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 03:50:48,337 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:50:48,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:50:48,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1033805559, now seen corresponding path program 4 times [2022-01-10 03:50:48,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:50:48,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138505187] [2022-01-10 03:50:48,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 03:50:48,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:50:48,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:50:48,339 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 03:50:48,343 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 03:50:58,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 03:50:58,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 03:50:58,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-10 03:50:58,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:51:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 5301 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-10 03:51:00,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:51:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5301 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-10 03:51:06,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:51:06,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138505187] [2022-01-10 03:51:06,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138505187] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:51:06,986 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:51:06,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2022-01-10 03:51:06,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012053749] [2022-01-10 03:51:06,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:51:06,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-10 03:51:06,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:51:06,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-10 03:51:06,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506 [2022-01-10 03:51:06,989 INFO L87 Difference]: Start difference. First operand 280 states and 380 transitions. Second operand has 98 states, 98 states have (on average 4.887755102040816) internal successors, (479), 97 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)