/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:39:41,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:39:41,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:39:41,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 05:39:41,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:39:41,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:39:41,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:39:41,782 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 05:39:41,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:39:41,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:39:41,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:39:41,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:39:41,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:39:41,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:39:41,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:39:41,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:39:41,810 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:39:41,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:39:41,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:39:41,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:39:41,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:39:41,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:39:41,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:39:41,812 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:39:41,812 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:39:41,812 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:39:41,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:39:41,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:39:41,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:39:41,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:39:41,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:39:41,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:39:41,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:39:41,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:39:41,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:39:41,814 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:39:41,814 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:39:41,814 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:39:41,814 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:39:41,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:39:41,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:39:41,815 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:39:41,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:39:42,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:39:42,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:39:42,021 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:39:42,022 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:39:42,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label31.c [2022-01-10 05:39:42,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fee2fdbd0/14e478b7f3fe4d879870f864d4e67639/FLAG33632cce8 [2022-01-10 05:39:42,708 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:39:42,709 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label31.c [2022-01-10 05:39:42,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fee2fdbd0/14e478b7f3fe4d879870f864d4e67639/FLAG33632cce8 [2022-01-10 05:39:42,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fee2fdbd0/14e478b7f3fe4d879870f864d4e67639 [2022-01-10 05:39:42,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:39:42,907 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:39:42,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:39:42,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:39:42,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:39:42,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:39:42" (1/1) ... [2022-01-10 05:39:42,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b89c80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:39:42, skipping insertion in model container [2022-01-10 05:39:42,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:39:42" (1/1) ... [2022-01-10 05:39:42,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:39:43,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:39:43,237 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label31.c[1896,1909] [2022-01-10 05:39:43,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:39:43,926 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:39:43,948 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label31.c[1896,1909] [2022-01-10 05:39:44,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:39:44,221 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:39:44,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:39:44 WrapperNode [2022-01-10 05:39:44,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:39:44,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:39:44,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:39:44,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:39:44,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:39:44" (1/1) ... [2022-01-10 05:39:44,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:39:44" (1/1) ... [2022-01-10 05:39:44,368 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4128 [2022-01-10 05:39:44,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:39:44,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:39:44,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:39:44,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:39:44,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:39:44" (1/1) ... [2022-01-10 05:39:44,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:39:44" (1/1) ... [2022-01-10 05:39:44,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:39:44" (1/1) ... [2022-01-10 05:39:44,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:39:44" (1/1) ... [2022-01-10 05:39:44,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:39:44" (1/1) ... [2022-01-10 05:39:44,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:39:44" (1/1) ... [2022-01-10 05:39:44,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:39:44" (1/1) ... [2022-01-10 05:39:44,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:39:44,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:39:44,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:39:44,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:39:44,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:39:44" (1/1) ... [2022-01-10 05:39:44,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:39:44,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:39:44,544 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 05:39:44,571 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 05:39:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:39:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:39:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:39:44,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:39:44,660 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:39:44,661 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:39:55,569 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:39:55,582 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:39:55,582 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:39:55,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:39:55 BoogieIcfgContainer [2022-01-10 05:39:55,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:39:55,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:39:55,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:39:55,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:39:55,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:39:42" (1/3) ... [2022-01-10 05:39:55,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3234e0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:39:55, skipping insertion in model container [2022-01-10 05:39:55,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:39:44" (2/3) ... [2022-01-10 05:39:55,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3234e0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:39:55, skipping insertion in model container [2022-01-10 05:39:55,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:39:55" (3/3) ... [2022-01-10 05:39:55,603 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label31.c [2022-01-10 05:39:55,607 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:39:55,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:39:55,648 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:39:55,653 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 05:39:55,654 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:39:55,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 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 05:39:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 05:39:55,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:39:55,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:39:55,686 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:39:55,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:39:55,690 INFO L85 PathProgramCache]: Analyzing trace with hash -884752143, now seen corresponding path program 1 times [2022-01-10 05:39:55,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:39:55,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545332515] [2022-01-10 05:39:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:39:55,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:39:55,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:39:55,701 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 05:39:55,702 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 05:39:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:39:55,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:39:55,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:39:55,862 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 05:39:55,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:39:55,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:39:55,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545332515] [2022-01-10 05:39:55,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545332515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:39:55,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:39:55,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:39:55,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023093427] [2022-01-10 05:39:55,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:39:55,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:39:55,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:39:55,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:39:55,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:39:55,931 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 05:40:09,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:40:09,742 INFO L93 Difference]: Finished difference Result 2205 states and 4266 transitions. [2022-01-10 05:40:09,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:40:09,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-01-10 05:40:09,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:40:09,761 INFO L225 Difference]: With dead ends: 2205 [2022-01-10 05:40:09,761 INFO L226 Difference]: Without dead ends: 1384 [2022-01-10 05:40:09,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:40:09,770 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 697 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-01-10 05:40:09,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 432 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2022-01-10 05:40:09,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-01-10 05:40:09,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-01-10 05:40:09,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.6428054953000724) internal successors, (2272), 1383 states have internal predecessors, (2272), 0 states have call successors, (0), 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 05:40:09,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2272 transitions. [2022-01-10 05:40:09,886 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2272 transitions. Word has length 15 [2022-01-10 05:40:09,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:40:09,886 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 2272 transitions. [2022-01-10 05:40:09,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 05:40:09,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2272 transitions. [2022-01-10 05:40:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 05:40:09,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:40:09,889 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:40:09,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 05:40:10,098 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 05:40:10,099 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:40:10,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:40:10,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1836204162, now seen corresponding path program 1 times [2022-01-10 05:40:10,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:40:10,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305236997] [2022-01-10 05:40:10,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:40:10,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:40:10,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:40:10,122 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 05:40:10,127 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 05:40:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:40:10,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:40:10,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:40:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:40:10,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:40:10,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:40:10,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305236997] [2022-01-10 05:40:10,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305236997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:40:10,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:40:10,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:40:10,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079036747] [2022-01-10 05:40:10,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:40:10,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:40:10,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:40:10,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:40:10,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:40:10,433 INFO L87 Difference]: Start difference. First operand 1384 states and 2272 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:40:24,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:40:24,266 INFO L93 Difference]: Finished difference Result 4146 states and 6811 transitions. [2022-01-10 05:40:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:40:24,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 05:40:24,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:40:24,278 INFO L225 Difference]: With dead ends: 4146 [2022-01-10 05:40:24,278 INFO L226 Difference]: Without dead ends: 2764 [2022-01-10 05:40:24,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:40:24,281 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 667 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-01-10 05:40:24,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 591 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2022-01-10 05:40:24,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2022-01-10 05:40:24,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2022-01-10 05:40:24,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.3785740137531668) internal successors, (3809), 2763 states have internal predecessors, (3809), 0 states have call successors, (0), 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 05:40:24,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3809 transitions. [2022-01-10 05:40:24,329 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3809 transitions. Word has length 80 [2022-01-10 05:40:24,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:40:24,329 INFO L470 AbstractCegarLoop]: Abstraction has 2764 states and 3809 transitions. [2022-01-10 05:40:24,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:40:24,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3809 transitions. [2022-01-10 05:40:24,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 05:40:24,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:40:24,332 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:40:24,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 05:40:24,545 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 05:40:24,545 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:40:24,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:40:24,546 INFO L85 PathProgramCache]: Analyzing trace with hash -405242260, now seen corresponding path program 1 times [2022-01-10 05:40:24,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:40:24,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796170325] [2022-01-10 05:40:24,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:40:24,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:40:24,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:40:24,548 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 05:40:24,550 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 05:40:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:40:24,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:40:24,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:40:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:40:24,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:40:24,767 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:40:24,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796170325] [2022-01-10 05:40:24,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796170325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:40:24,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:40:24,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:40:24,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14077750] [2022-01-10 05:40:24,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:40:24,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:40:24,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:40:24,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:40:24,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:40:24,770 INFO L87 Difference]: Start difference. First operand 2764 states and 3809 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:40:39,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:40:39,023 INFO L93 Difference]: Finished difference Result 8286 states and 11422 transitions. [2022-01-10 05:40:39,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:40:39,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 05:40:39,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:40:39,040 INFO L225 Difference]: With dead ends: 8286 [2022-01-10 05:40:39,041 INFO L226 Difference]: Without dead ends: 5524 [2022-01-10 05:40:39,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:40:39,045 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 627 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-01-10 05:40:39,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 611 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2022-01-10 05:40:39,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2022-01-10 05:40:39,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 5524. [2022-01-10 05:40:39,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5524 states, 5523 states have (on average 1.2513126923773312) internal successors, (6911), 5523 states have internal predecessors, (6911), 0 states have call successors, (0), 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 05:40:39,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5524 states to 5524 states and 6911 transitions. [2022-01-10 05:40:39,121 INFO L78 Accepts]: Start accepts. Automaton has 5524 states and 6911 transitions. Word has length 83 [2022-01-10 05:40:39,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:40:39,123 INFO L470 AbstractCegarLoop]: Abstraction has 5524 states and 6911 transitions. [2022-01-10 05:40:39,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:40:39,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5524 states and 6911 transitions. [2022-01-10 05:40:39,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 05:40:39,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:40:39,129 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:40:39,143 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 05:40:39,337 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 05:40:39,337 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:40:39,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:40:39,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1012832217, now seen corresponding path program 1 times [2022-01-10 05:40:39,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:40:39,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119893781] [2022-01-10 05:40:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:40:39,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:40:39,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:40:39,342 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 05:40:39,343 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 05:40:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:40:39,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:40:39,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:40:39,627 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:40:39,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:40:39,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:40:39,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119893781] [2022-01-10 05:40:39,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119893781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:40:39,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:40:39,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:40:39,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283115869] [2022-01-10 05:40:39,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:40:39,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:40:39,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:40:39,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:40:39,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:40:39,629 INFO L87 Difference]: Start difference. First operand 5524 states and 6911 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:40:49,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:40:49,736 INFO L93 Difference]: Finished difference Result 13116 states and 16083 transitions. [2022-01-10 05:40:49,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:40:49,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-01-10 05:40:49,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:40:49,757 INFO L225 Difference]: With dead ends: 13116 [2022-01-10 05:40:49,757 INFO L226 Difference]: Without dead ends: 7594 [2022-01-10 05:40:49,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:40:49,769 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 623 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-01-10 05:40:49,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 629 Invalid, 2110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-01-10 05:40:49,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7594 states. [2022-01-10 05:40:49,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7594 to 7594. [2022-01-10 05:40:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7594 states, 7593 states have (on average 1.1907019623337285) internal successors, (9041), 7593 states have internal predecessors, (9041), 0 states have call successors, (0), 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 05:40:49,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 9041 transitions. [2022-01-10 05:40:49,873 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 9041 transitions. Word has length 101 [2022-01-10 05:40:49,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:40:49,873 INFO L470 AbstractCegarLoop]: Abstraction has 7594 states and 9041 transitions. [2022-01-10 05:40:49,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:40:49,874 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 9041 transitions. [2022-01-10 05:40:49,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 05:40:49,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:40:49,876 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:40:49,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 05:40:50,086 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 05:40:50,086 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:40:50,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:40:50,087 INFO L85 PathProgramCache]: Analyzing trace with hash 187061000, now seen corresponding path program 1 times [2022-01-10 05:40:50,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:40:50,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049406169] [2022-01-10 05:40:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:40:50,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:40:50,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:40:50,089 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 05:40:50,090 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 05:40:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:40:50,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:40:50,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:40:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:40:50,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:40:50,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:40:50,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049406169] [2022-01-10 05:40:50,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049406169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:40:50,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:40:50,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:40:50,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096435330] [2022-01-10 05:40:50,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:40:50,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:40:50,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:40:50,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:40:50,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:40:50,673 INFO L87 Difference]: Start difference. First operand 7594 states and 9041 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)