/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/Problem15_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:22:52,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:22:52,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:22:52,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 05:22:52,360 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 05:22:52,383 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:22:52,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:22:52,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:22:52,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:22:52,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:22:52,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:22:52,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:22:52,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:22:52,385 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:22:52,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:22:52,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:22:52,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:22:52,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:22:52,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:22:52,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:22:52,387 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:22:52,387 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:22:52,387 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:22:52,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:22:52,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:22:52,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:22:52,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:22:52,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:22:52,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:22:52,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:22:52,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:22:52,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:22:52,388 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:22:52,388 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:22:52,388 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:22:52,388 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:22:52,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:22:52,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:22:52,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:22:52,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:22:52,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:22:52,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:22:52,603 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:22:52,604 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:22:52,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label30.c [2022-01-10 05:22:52,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19e25a49b/3d2bfa9daa1749a0bb363a3ed7a91808/FLAGe4787f60f [2022-01-10 05:22:53,204 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:22:53,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label30.c [2022-01-10 05:22:53,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19e25a49b/3d2bfa9daa1749a0bb363a3ed7a91808/FLAGe4787f60f [2022-01-10 05:22:53,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19e25a49b/3d2bfa9daa1749a0bb363a3ed7a91808 [2022-01-10 05:22:53,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:22:53,676 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:22:53,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:22:53,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:22:53,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:22:53,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:22:53" (1/1) ... [2022-01-10 05:22:53,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23754bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:22:53, skipping insertion in model container [2022-01-10 05:22:53,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:22:53" (1/1) ... [2022-01-10 05:22:53,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:22:53,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:22:53,928 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/Problem15_label30.c[1915,1928] [2022-01-10 05:22:54,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:22:54,250 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:22:54,269 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/Problem15_label30.c[1915,1928] [2022-01-10 05:22:54,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:22:54,495 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:22:54,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:22:54 WrapperNode [2022-01-10 05:22:54,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:22:54,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:22:54,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:22:54,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:22:54,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:22:54" (1/1) ... [2022-01-10 05:22:54,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:22:54" (1/1) ... [2022-01-10 05:22:54,589 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1755 [2022-01-10 05:22:54,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:22:54,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:22:54,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:22:54,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:22:54,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:22:54" (1/1) ... [2022-01-10 05:22:54,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:22:54" (1/1) ... [2022-01-10 05:22:54,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:22:54" (1/1) ... [2022-01-10 05:22:54,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:22:54" (1/1) ... [2022-01-10 05:22:54,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:22:54" (1/1) ... [2022-01-10 05:22:54,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:22:54" (1/1) ... [2022-01-10 05:22:54,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:22:54" (1/1) ... [2022-01-10 05:22:54,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:22:54,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:22:54,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:22:54,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:22:54,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:22:54" (1/1) ... [2022-01-10 05:22:54,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:22:54,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:22:54,701 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 05:22:54,708 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 05:22:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:22:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:22:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:22:54,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:22:54,781 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:22:54,782 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:23:09,516 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:23:09,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:23:09,525 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:23:09,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:23:09 BoogieIcfgContainer [2022-01-10 05:23:09,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:23:09,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:23:09,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:23:09,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:23:09,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:22:53" (1/3) ... [2022-01-10 05:23:09,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f13d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:23:09, skipping insertion in model container [2022-01-10 05:23:09,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:22:54" (2/3) ... [2022-01-10 05:23:09,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f13d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:23:09, skipping insertion in model container [2022-01-10 05:23:09,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:23:09" (3/3) ... [2022-01-10 05:23:09,561 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label30.c [2022-01-10 05:23:09,572 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:23:09,573 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:23:09,619 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:23:09,623 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 05:23:09,623 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:23:09,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 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 05:23:09,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 05:23:09,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:23:09,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:23:09,647 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:23:09,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:23:09,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1414013846, now seen corresponding path program 1 times [2022-01-10 05:23:09,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:23:09,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812110333] [2022-01-10 05:23:09,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:23:09,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:23:09,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:23:09,668 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 05:23:09,669 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 05:23:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:23:09,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:23:09,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:23:09,789 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 05:23:09,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:23:09,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:23:09,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812110333] [2022-01-10 05:23:09,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812110333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:23:09,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:23:09,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:23:09,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956400179] [2022-01-10 05:23:09,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:23:09,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:23:09,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:23:09,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:23:09,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:23:09,826 INFO L87 Difference]: Start difference. First operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 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 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 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 05:23:29,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:23:29,930 INFO L93 Difference]: Finished difference Result 1153 states and 2105 transitions. [2022-01-10 05:23:29,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:23:29,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-01-10 05:23:29,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:23:29,953 INFO L225 Difference]: With dead ends: 1153 [2022-01-10 05:23:29,953 INFO L226 Difference]: Without dead ends: 664 [2022-01-10 05:23:29,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 05:23:29,977 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 306 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2022-01-10 05:23:29,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 383 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 20.0s Time] [2022-01-10 05:23:30,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-01-10 05:23:30,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 662. [2022-01-10 05:23:30,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.4826021180030258) internal successors, (980), 661 states have internal predecessors, (980), 0 states have call successors, (0), 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 05:23:30,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 980 transitions. [2022-01-10 05:23:30,057 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 980 transitions. Word has length 14 [2022-01-10 05:23:30,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:23:30,058 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 980 transitions. [2022-01-10 05:23:30,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 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 05:23:30,058 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 980 transitions. [2022-01-10 05:23:30,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 05:23:30,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:23:30,060 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:23:30,067 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 05:23:30,260 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 05:23:30,261 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:23:30,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:23:30,262 INFO L85 PathProgramCache]: Analyzing trace with hash -981945563, now seen corresponding path program 1 times [2022-01-10 05:23:30,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:23:30,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852271410] [2022-01-10 05:23:30,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:23:30,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:23:30,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:23:30,266 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 05:23:30,267 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 05:23:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:23:30,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:23:30,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:23:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:23:30,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:23:30,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:23:30,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852271410] [2022-01-10 05:23:30,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852271410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:23:30,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:23:30,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:23:30,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474363092] [2022-01-10 05:23:30,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:23:30,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:23:30,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:23:30,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:23:30,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:23:30,561 INFO L87 Difference]: Start difference. First operand 662 states and 980 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:23:48,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:23:48,701 INFO L93 Difference]: Finished difference Result 1927 states and 2854 transitions. [2022-01-10 05:23:48,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:23:48,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 05:23:48,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:23:48,706 INFO L225 Difference]: With dead ends: 1927 [2022-01-10 05:23:48,706 INFO L226 Difference]: Without dead ends: 1267 [2022-01-10 05:23:48,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 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 05:23:48,707 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 261 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2022-01-10 05:23:48,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 318 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2022-01-10 05:23:48,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-01-10 05:23:48,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1265. [2022-01-10 05:23:48,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1264 states have (on average 1.3045886075949367) internal successors, (1649), 1264 states have internal predecessors, (1649), 0 states have call successors, (0), 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 05:23:48,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1649 transitions. [2022-01-10 05:23:48,750 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1649 transitions. Word has length 79 [2022-01-10 05:23:48,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:23:48,751 INFO L470 AbstractCegarLoop]: Abstraction has 1265 states and 1649 transitions. [2022-01-10 05:23:48,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:23:48,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1649 transitions. [2022-01-10 05:23:48,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 05:23:48,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:23:48,755 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 05:23:48,763 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 05:23:48,963 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 05:23:48,964 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:23:48,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:23:48,964 INFO L85 PathProgramCache]: Analyzing trace with hash -274508967, now seen corresponding path program 1 times [2022-01-10 05:23:48,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:23:48,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14064397] [2022-01-10 05:23:48,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:23:48,966 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:23:48,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:23:48,967 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 05:23:48,968 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 05:23:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:23:49,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 05:23:49,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:23:50,829 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 65 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:23:50,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:23:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 65 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:23:52,523 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:23:52,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14064397] [2022-01-10 05:23:52,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14064397] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:23:52,523 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:23:52,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-01-10 05:23:52,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962754936] [2022-01-10 05:23:52,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:23:52,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 05:23:52,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:23:52,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 05:23:52,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 05:23:52,525 INFO L87 Difference]: Start difference. First operand 1265 states and 1649 transitions. Second operand has 6 states, 6 states have (on average 50.833333333333336) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)