/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/Problem16_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:25:44,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:25:44,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:25:44,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 05:25:44,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:25:44,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:25:44,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:25:44,953 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 05:25:44,991 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:25:44,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:25:44,992 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:25:44,992 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:25:44,993 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:25:44,993 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:25:44,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:25:44,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:25:44,994 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:25:44,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:25:44,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:25:44,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:25:44,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:25:44,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:25:44,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:25:44,995 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:25:44,995 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:25:44,996 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:25:44,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:25:44,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:25:44,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:25:44,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:25:44,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:25:44,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:25:44,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:25:44,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:25:44,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:25:44,998 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:25:44,998 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:25:44,998 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:25:44,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:25:44,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:25:44,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:25:44,999 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:25:45,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:25:45,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:25:45,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:25:45,270 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:25:45,271 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:25:45,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label03.c [2022-01-10 05:25:45,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12cd60698/b4442815e2954cc48dd21a7d04fce4ad/FLAGed40d09f4 [2022-01-10 05:25:45,975 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:25:45,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label03.c [2022-01-10 05:25:46,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12cd60698/b4442815e2954cc48dd21a7d04fce4ad/FLAGed40d09f4 [2022-01-10 05:25:46,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12cd60698/b4442815e2954cc48dd21a7d04fce4ad [2022-01-10 05:25:46,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:25:46,343 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:25:46,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:25:46,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:25:46,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:25:46,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:25:46" (1/1) ... [2022-01-10 05:25:46,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ea1f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:25:46, skipping insertion in model container [2022-01-10 05:25:46,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:25:46" (1/1) ... [2022-01-10 05:25:46,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:25:46,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:25:46,641 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/Problem16_label03.c[1025,1038] [2022-01-10 05:25:47,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:25:47,034 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:25:47,051 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/Problem16_label03.c[1025,1038] [2022-01-10 05:25:47,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:25:47,280 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:25:47,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:25:47 WrapperNode [2022-01-10 05:25:47,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:25:47,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:25:47,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:25:47,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:25:47,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:25:47" (1/1) ... [2022-01-10 05:25:47,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:25:47" (1/1) ... [2022-01-10 05:25:47,408 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1765 [2022-01-10 05:25:47,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:25:47,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:25:47,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:25:47,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:25:47,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:25:47" (1/1) ... [2022-01-10 05:25:47,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:25:47" (1/1) ... [2022-01-10 05:25:47,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:25:47" (1/1) ... [2022-01-10 05:25:47,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:25:47" (1/1) ... [2022-01-10 05:25:47,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:25:47" (1/1) ... [2022-01-10 05:25:47,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:25:47" (1/1) ... [2022-01-10 05:25:47,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:25:47" (1/1) ... [2022-01-10 05:25:47,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:25:47,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:25:47,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:25:47,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:25:47,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:25:47" (1/1) ... [2022-01-10 05:25:47,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:25:47,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:25:47,601 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 05:25:47,621 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 05:25:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:25:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:25:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:25:47,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:25:47,711 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:25:47,713 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:25:55,275 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:25:55,286 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:25:55,286 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:25:55,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:25:55 BoogieIcfgContainer [2022-01-10 05:25:55,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:25:55,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:25:55,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:25:55,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:25:55,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:25:46" (1/3) ... [2022-01-10 05:25:55,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e56462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:25:55, skipping insertion in model container [2022-01-10 05:25:55,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:25:47" (2/3) ... [2022-01-10 05:25:55,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e56462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:25:55, skipping insertion in model container [2022-01-10 05:25:55,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:25:55" (3/3) ... [2022-01-10 05:25:55,296 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label03.c [2022-01-10 05:25:55,300 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:25:55,301 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:25:55,345 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:25:55,351 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 05:25:55,351 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:25:55,370 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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 05:25:55,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 05:25:55,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:25:55,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 05:25:55,375 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:25:55,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:25:55,380 INFO L85 PathProgramCache]: Analyzing trace with hash 889694410, now seen corresponding path program 1 times [2022-01-10 05:25:55,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:25:55,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883478662] [2022-01-10 05:25:55,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:25:55,392 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:25:55,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:25:55,395 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 05:25:55,406 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 05:25:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:25:55,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:25:55,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:25:55,522 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 05:25:55,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:25:55,523 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:25:55,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883478662] [2022-01-10 05:25:55,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883478662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:25:55,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:25:55,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:25:55,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764104412] [2022-01-10 05:25:55,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:25:55,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:25:55,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:25:55,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:25:55,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:25:55,566 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 05:26:03,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:26:03,459 INFO L93 Difference]: Finished difference Result 1137 states and 2118 transitions. [2022-01-10 05:26:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:26:03,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-01-10 05:26:03,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:26:03,483 INFO L225 Difference]: With dead ends: 1137 [2022-01-10 05:26:03,483 INFO L226 Difference]: Without dead ends: 662 [2022-01-10 05:26:03,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 05:26:03,497 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 347 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-01-10 05:26:03,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 198 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-01-10 05:26:03,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-01-10 05:26:03,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2022-01-10 05:26:03,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.600605143721634) internal successors, (1058), 661 states have internal predecessors, (1058), 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 05:26:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1058 transitions. [2022-01-10 05:26:03,575 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1058 transitions. Word has length 6 [2022-01-10 05:26:03,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:26:03,575 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 1058 transitions. [2022-01-10 05:26:03,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 05:26:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1058 transitions. [2022-01-10 05:26:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 05:26:03,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:26:03,578 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 05:26:03,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 05:26:03,786 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 05:26:03,787 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:26:03,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:26:03,788 INFO L85 PathProgramCache]: Analyzing trace with hash 344616016, now seen corresponding path program 1 times [2022-01-10 05:26:03,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:26:03,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926548289] [2022-01-10 05:26:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:26:03,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:26:03,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:26:03,792 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 05:26:03,798 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 05:26:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:26:03,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:26:03,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:26:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:26:04,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:26:04,080 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:26:04,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926548289] [2022-01-10 05:26:04,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926548289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:26:04,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:26:04,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:26:04,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517133902] [2022-01-10 05:26:04,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:26:04,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:26:04,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:26:04,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:26:04,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:26:04,084 INFO L87 Difference]: Start difference. First operand 662 states and 1058 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 05:26:12,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:26:12,641 INFO L93 Difference]: Finished difference Result 1980 states and 3169 transitions. [2022-01-10 05:26:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:26:12,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2022-01-10 05:26:12,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:26:12,648 INFO L225 Difference]: With dead ends: 1980 [2022-01-10 05:26:12,648 INFO L226 Difference]: Without dead ends: 1320 [2022-01-10 05:26:12,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 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 05:26:12,650 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 304 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-01-10 05:26:12,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 199 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-01-10 05:26:12,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-01-10 05:26:12,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2022-01-10 05:26:12,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.3828658074298712) internal successors, (1824), 1319 states have internal predecessors, (1824), 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 05:26:12,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1824 transitions. [2022-01-10 05:26:12,688 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1824 transitions. Word has length 71 [2022-01-10 05:26:12,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:26:12,688 INFO L470 AbstractCegarLoop]: Abstraction has 1320 states and 1824 transitions. [2022-01-10 05:26:12,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 05:26:12,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1824 transitions. [2022-01-10 05:26:12,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 05:26:12,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:26:12,691 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 05:26:12,702 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 05:26:12,900 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 05:26:12,900 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:26:12,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:26:12,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1894028307, now seen corresponding path program 1 times [2022-01-10 05:26:12,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:26:12,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535687875] [2022-01-10 05:26:12,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:26:12,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:26:12,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:26:12,906 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 05:26:12,908 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 05:26:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:26:12,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:26:12,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:26:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:26:13,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:26:13,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:26:13,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535687875] [2022-01-10 05:26:13,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535687875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:26:13,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:26:13,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:26:13,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054998484] [2022-01-10 05:26:13,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:26:13,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:26:13,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:26:13,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:26:13,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:26:13,240 INFO L87 Difference]: Start difference. First operand 1320 states and 1824 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 05:26:23,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:26:23,240 INFO L93 Difference]: Finished difference Result 3296 states and 4647 transitions. [2022-01-10 05:26:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:26:23,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 85 [2022-01-10 05:26:23,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:26:23,250 INFO L225 Difference]: With dead ends: 3296 [2022-01-10 05:26:23,250 INFO L226 Difference]: Without dead ends: 1978 [2022-01-10 05:26:23,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 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 05:26:23,253 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 254 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-01-10 05:26:23,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 272 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-01-10 05:26:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2022-01-10 05:26:23,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1978. [2022-01-10 05:26:23,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 1.2281234193222053) internal successors, (2428), 1977 states have internal predecessors, (2428), 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 05:26:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2428 transitions. [2022-01-10 05:26:23,294 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2428 transitions. Word has length 85 [2022-01-10 05:26:23,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:26:23,297 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 2428 transitions. [2022-01-10 05:26:23,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 05:26:23,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2428 transitions. [2022-01-10 05:26:23,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 05:26:23,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:26:23,306 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2022-01-10 05:26:23,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 05:26:23,518 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 05:26:23,519 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:26:23,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:26:23,519 INFO L85 PathProgramCache]: Analyzing trace with hash -640794733, now seen corresponding path program 1 times [2022-01-10 05:26:23,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:26:23,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489897252] [2022-01-10 05:26:23,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:26:23,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:26:23,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:26:23,523 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 05:26:23,525 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 05:26:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:26:23,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 05:26:23,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:26:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:26:24,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:26:28,295 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:26:28,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:26:28,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489897252] [2022-01-10 05:26:28,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489897252] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:26:28,296 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:26:28,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 05:26:28,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918258880] [2022-01-10 05:26:28,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:26:28,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 05:26:28,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:26:28,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 05:26:28,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 05:26:28,299 INFO L87 Difference]: Start difference. First operand 1978 states and 2428 transitions. Second operand has 7 states, 7 states have (on average 43.714285714285715) internal successors, (306), 6 states have internal predecessors, (306), 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 05:26:49,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:26:52,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []