/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/Problem14_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:19:09,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:19:09,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:19:09,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 05:19:09,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:19:09,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:19:09,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:19:09,855 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 05:19:09,875 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:19:09,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:19:09,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:19:09,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:19:09,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:19:09,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:19:09,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:19:09,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:19:09,877 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:19:09,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:19:09,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:19:09,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:19:09,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:19:09,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:19:09,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:19:09,878 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:19:09,878 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:19:09,878 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:19:09,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:19:09,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:19:09,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:19:09,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:19:09,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:19:09,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:19:09,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:19:09,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:19:09,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:19:09,879 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:19:09,879 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:19:09,879 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:19:09,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:19:09,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:19:09,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:19:09,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:19:10,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:19:10,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:19:10,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:19:10,077 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:19:10,078 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:19:10,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label52.c [2022-01-10 05:19:10,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e532327b/4e4ab3ea393845e1a98712eac048858f/FLAG6474be0a3 [2022-01-10 05:19:10,606 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:19:10,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label52.c [2022-01-10 05:19:10,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e532327b/4e4ab3ea393845e1a98712eac048858f/FLAG6474be0a3 [2022-01-10 05:19:10,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e532327b/4e4ab3ea393845e1a98712eac048858f [2022-01-10 05:19:10,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:19:10,632 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:19:10,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:19:10,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:19:10,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:19:10,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:19:10" (1/1) ... [2022-01-10 05:19:10,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63aab528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:10, skipping insertion in model container [2022-01-10 05:19:10,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:19:10" (1/1) ... [2022-01-10 05:19:10,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:19:10,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:19:10,811 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/Problem14_label52.c[2478,2491] [2022-01-10 05:19:10,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:19:10,977 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:19:10,996 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/Problem14_label52.c[2478,2491] [2022-01-10 05:19:11,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:19:11,059 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:19:11,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:11 WrapperNode [2022-01-10 05:19:11,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:19:11,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:19:11,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:19:11,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:19:11,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:11" (1/1) ... [2022-01-10 05:19:11,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:11" (1/1) ... [2022-01-10 05:19:11,170 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 856 [2022-01-10 05:19:11,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:19:11,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:19:11,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:19:11,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:19:11,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:11" (1/1) ... [2022-01-10 05:19:11,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:11" (1/1) ... [2022-01-10 05:19:11,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:11" (1/1) ... [2022-01-10 05:19:11,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:11" (1/1) ... [2022-01-10 05:19:11,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:11" (1/1) ... [2022-01-10 05:19:11,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:11" (1/1) ... [2022-01-10 05:19:11,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:11" (1/1) ... [2022-01-10 05:19:11,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:19:11,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:19:11,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:19:11,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:19:11,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:11" (1/1) ... [2022-01-10 05:19:11,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:19:11,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:19:11,281 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 05:19:11,325 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 05:19:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:19:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:19:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:19:11,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:19:11,396 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:19:11,397 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:19:13,478 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:19:13,487 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:19:13,487 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:19:13,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:19:13 BoogieIcfgContainer [2022-01-10 05:19:13,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:19:13,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:19:13,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:19:13,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:19:13,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:19:10" (1/3) ... [2022-01-10 05:19:13,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d984c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:19:13, skipping insertion in model container [2022-01-10 05:19:13,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:19:11" (2/3) ... [2022-01-10 05:19:13,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d984c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:19:13, skipping insertion in model container [2022-01-10 05:19:13,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:19:13" (3/3) ... [2022-01-10 05:19:13,496 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label52.c [2022-01-10 05:19:13,501 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:19:13,501 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:19:13,543 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:19:13,561 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 05:19:13,561 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:19:13,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 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 05:19:13,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 05:19:13,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:13,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:19:13,592 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:13,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:13,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1644072970, now seen corresponding path program 1 times [2022-01-10 05:19:13,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:13,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177264891] [2022-01-10 05:19:13,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:13,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:13,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:13,609 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 05:19:13,610 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 05:19:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:13,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:19:13,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:13,763 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 05:19:13,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:19:13,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:13,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177264891] [2022-01-10 05:19:13,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177264891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:19:13,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:19:13,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:19:13,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106736799] [2022-01-10 05:19:13,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:19:13,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:19:13,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:13,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:19:13,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:19:13,802 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 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 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:16,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:19:16,845 INFO L93 Difference]: Finished difference Result 669 states and 1200 transitions. [2022-01-10 05:19:16,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:19:16,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-10 05:19:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:19:16,858 INFO L225 Difference]: With dead ends: 669 [2022-01-10 05:19:16,858 INFO L226 Difference]: Without dead ends: 360 [2022-01-10 05:19:16,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 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 05:19:16,864 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 173 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 05:19:16,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 131 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 05:19:16,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-01-10 05:19:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2022-01-10 05:19:16,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4874651810584958) internal successors, (534), 359 states have internal predecessors, (534), 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 05:19:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 534 transitions. [2022-01-10 05:19:16,904 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 534 transitions. Word has length 22 [2022-01-10 05:19:16,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:19:16,904 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 534 transitions. [2022-01-10 05:19:16,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:16,905 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 534 transitions. [2022-01-10 05:19:16,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 05:19:16,907 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:16,907 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 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 05:19:16,913 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 05:19:17,108 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 05:19:17,108 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:17,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:17,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1615404448, now seen corresponding path program 1 times [2022-01-10 05:19:17,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:17,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846395523] [2022-01-10 05:19:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:17,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:17,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:17,111 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 05:19:17,119 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 05:19:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:17,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:19:17,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:19:17,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:19:17,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:17,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846395523] [2022-01-10 05:19:17,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846395523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:19:17,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:19:17,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:19:17,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703970628] [2022-01-10 05:19:17,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:19:17,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:19:17,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:17,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:19:17,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:19:17,398 INFO L87 Difference]: Start difference. First operand 360 states and 534 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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 05:19:20,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:19:20,228 INFO L93 Difference]: Finished difference Result 1074 states and 1597 transitions. [2022-01-10 05:19:20,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:19:20,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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 87 [2022-01-10 05:19:20,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:19:20,232 INFO L225 Difference]: With dead ends: 1074 [2022-01-10 05:19:20,232 INFO L226 Difference]: Without dead ends: 716 [2022-01-10 05:19:20,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 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 05:19:20,234 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 115 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 05:19:20,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 102 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 05:19:20,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-01-10 05:19:20,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2022-01-10 05:19:20,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.3454545454545455) internal successors, (962), 715 states have internal predecessors, (962), 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 05:19:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 962 transitions. [2022-01-10 05:19:20,276 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 962 transitions. Word has length 87 [2022-01-10 05:19:20,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:19:20,277 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 962 transitions. [2022-01-10 05:19:20,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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 05:19:20,277 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 962 transitions. [2022-01-10 05:19:20,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 05:19:20,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:20,278 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 05:19:20,287 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 05:19:20,485 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 05:19:20,486 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:20,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:20,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1924356692, now seen corresponding path program 1 times [2022-01-10 05:19:20,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:20,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233415191] [2022-01-10 05:19:20,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:20,487 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:20,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:20,489 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 05:19:20,490 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 05:19:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:20,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:19:20,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:19:20,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:19:20,703 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:20,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233415191] [2022-01-10 05:19:20,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233415191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:19:20,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:19:20,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:19:20,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946319154] [2022-01-10 05:19:20,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:19:20,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:19:20,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:20,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:19:20,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:19:20,709 INFO L87 Difference]: Start difference. First operand 716 states and 962 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:23,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:19:23,233 INFO L93 Difference]: Finished difference Result 1964 states and 2655 transitions. [2022-01-10 05:19:23,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:19:23,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 05:19:23,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:19:23,237 INFO L225 Difference]: With dead ends: 1964 [2022-01-10 05:19:23,237 INFO L226 Difference]: Without dead ends: 1250 [2022-01-10 05:19:23,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 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 05:19:23,238 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 129 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 05:19:23,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 89 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 05:19:23,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-01-10 05:19:23,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2022-01-10 05:19:23,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.245796637309848) internal successors, (1556), 1249 states have internal predecessors, (1556), 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 05:19:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1556 transitions. [2022-01-10 05:19:23,270 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1556 transitions. Word has length 90 [2022-01-10 05:19:23,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:19:23,271 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1556 transitions. [2022-01-10 05:19:23,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:19:23,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1556 transitions. [2022-01-10 05:19:23,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 05:19:23,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:23,275 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:19:23,283 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 05:19:23,481 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 05:19:23,481 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:23,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:23,482 INFO L85 PathProgramCache]: Analyzing trace with hash 792856362, now seen corresponding path program 1 times [2022-01-10 05:19:23,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:23,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503003098] [2022-01-10 05:19:23,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:23,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:23,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:23,484 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 05:19:23,486 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 05:19:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:23,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 05:19:23,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 28 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:19:24,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:19:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 28 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:19:24,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:24,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503003098] [2022-01-10 05:19:24,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503003098] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:19:24,615 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:19:24,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 05:19:24,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848745850] [2022-01-10 05:19:24,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:19:24,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 05:19:24,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:24,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 05:19:24,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-10 05:19:24,616 INFO L87 Difference]: Start difference. First operand 1250 states and 1556 transitions. Second operand has 7 states, 7 states have (on average 40.142857142857146) internal successors, (281), 6 states have internal predecessors, (281), 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 05:19:30,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:19:30,581 INFO L93 Difference]: Finished difference Result 2912 states and 3809 transitions. [2022-01-10 05:19:30,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 05:19:30,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 40.142857142857146) internal successors, (281), 6 states have internal predecessors, (281), 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 171 [2022-01-10 05:19:30,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:19:30,587 INFO L225 Difference]: With dead ends: 2912 [2022-01-10 05:19:30,587 INFO L226 Difference]: Without dead ends: 1842 [2022-01-10 05:19:30,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-01-10 05:19:30,589 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 986 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-01-10 05:19:30,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 133 Invalid, 2108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-01-10 05:19:30,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2022-01-10 05:19:30,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1428. [2022-01-10 05:19:30,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 1.2193412754029433) internal successors, (1740), 1427 states have internal predecessors, (1740), 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 05:19:30,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1740 transitions. [2022-01-10 05:19:30,620 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1740 transitions. Word has length 171 [2022-01-10 05:19:30,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:19:30,621 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1740 transitions. [2022-01-10 05:19:30,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.142857142857146) internal successors, (281), 6 states have internal predecessors, (281), 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 05:19:30,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1740 transitions. [2022-01-10 05:19:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-10 05:19:30,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:30,624 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:19:30,641 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 05:19:30,830 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 05:19:30,831 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:30,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:30,831 INFO L85 PathProgramCache]: Analyzing trace with hash -93200559, now seen corresponding path program 1 times [2022-01-10 05:19:30,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:30,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277783118] [2022-01-10 05:19:30,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:30,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:30,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:30,836 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 05:19:30,838 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 05:19:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:30,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 05:19:30,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:19:31,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:19:31,413 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:31,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277783118] [2022-01-10 05:19:31,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277783118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:19:31,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:19:31,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:19:31,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465385851] [2022-01-10 05:19:31,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:19:31,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 05:19:31,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:31,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 05:19:31,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 05:19:31,415 INFO L87 Difference]: Start difference. First operand 1428 states and 1740 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 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 05:19:33,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:19:33,373 INFO L93 Difference]: Finished difference Result 2883 states and 3519 transitions. [2022-01-10 05:19:33,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 05:19:33,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 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 181 [2022-01-10 05:19:33,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:19:33,378 INFO L225 Difference]: With dead ends: 2883 [2022-01-10 05:19:33,378 INFO L226 Difference]: Without dead ends: 1606 [2022-01-10 05:19:33,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 05:19:33,380 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 103 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 05:19:33,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 114 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 05:19:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2022-01-10 05:19:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2022-01-10 05:19:33,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.1968847352024923) internal successors, (1921), 1605 states have internal predecessors, (1921), 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 05:19:33,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1921 transitions. [2022-01-10 05:19:33,398 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1921 transitions. Word has length 181 [2022-01-10 05:19:33,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:19:33,398 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 1921 transitions. [2022-01-10 05:19:33,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 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 05:19:33,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1921 transitions. [2022-01-10 05:19:33,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-01-10 05:19:33,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:33,401 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 05:19:33,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 05:19:33,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:19:33,608 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:33,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:33,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1448542148, now seen corresponding path program 1 times [2022-01-10 05:19:33,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:33,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739597718] [2022-01-10 05:19:33,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:33,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:33,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:33,612 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:19:33,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 05:19:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:33,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:19:33,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-01-10 05:19:34,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:19:34,499 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:34,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739597718] [2022-01-10 05:19:34,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739597718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:19:34,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:19:34,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:19:34,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073641643] [2022-01-10 05:19:34,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:19:34,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:19:34,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:34,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:19:34,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:19:34,501 INFO L87 Difference]: Start difference. First operand 1606 states and 1921 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 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 05:19:36,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:19:36,232 INFO L93 Difference]: Finished difference Result 2854 states and 3475 transitions. [2022-01-10 05:19:36,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:19:36,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 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 276 [2022-01-10 05:19:36,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:19:36,236 INFO L225 Difference]: With dead ends: 2854 [2022-01-10 05:19:36,237 INFO L226 Difference]: Without dead ends: 1606 [2022-01-10 05:19:36,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 274 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 05:19:36,239 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 73 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 05:19:36,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 123 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 05:19:36,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2022-01-10 05:19:36,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2022-01-10 05:19:36,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.1931464174454829) internal successors, (1915), 1605 states have internal predecessors, (1915), 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 05:19:36,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1915 transitions. [2022-01-10 05:19:36,262 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1915 transitions. Word has length 276 [2022-01-10 05:19:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:19:36,262 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 1915 transitions. [2022-01-10 05:19:36,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 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 05:19:36,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1915 transitions. [2022-01-10 05:19:36,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-01-10 05:19:36,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:36,267 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:19:36,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 05:19:36,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:19:36,475 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:36,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:36,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1522297292, now seen corresponding path program 1 times [2022-01-10 05:19:36,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:36,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450428402] [2022-01-10 05:19:36,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:36,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:36,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:36,479 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:19:36,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 05:19:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:36,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:19:36,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 284 proven. 135 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 05:19:37,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:19:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 05:19:38,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:38,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450428402] [2022-01-10 05:19:38,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450428402] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 05:19:38,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 05:19:38,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 05:19:38,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62964879] [2022-01-10 05:19:38,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:19:38,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:19:38,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:38,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:19:38,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:19:38,055 INFO L87 Difference]: Start difference. First operand 1606 states and 1915 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 05:19:43,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:19:43,970 INFO L93 Difference]: Finished difference Result 3210 states and 4000 transitions. [2022-01-10 05:19:43,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:19:43,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 380 [2022-01-10 05:19:43,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:19:43,975 INFO L225 Difference]: With dead ends: 3210 [2022-01-10 05:19:43,975 INFO L226 Difference]: Without dead ends: 1962 [2022-01-10 05:19:44,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 755 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:19:44,004 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 133 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-01-10 05:19:44,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 59 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-01-10 05:19:44,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2022-01-10 05:19:44,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1962. [2022-01-10 05:19:44,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.2039775624681286) internal successors, (2361), 1961 states have internal predecessors, (2361), 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 05:19:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2361 transitions. [2022-01-10 05:19:44,026 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2361 transitions. Word has length 380 [2022-01-10 05:19:44,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:19:44,028 INFO L470 AbstractCegarLoop]: Abstraction has 1962 states and 2361 transitions. [2022-01-10 05:19:44,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 05:19:44,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2361 transitions. [2022-01-10 05:19:44,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-01-10 05:19:44,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:44,037 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:19:44,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 05:19:44,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:19:44,248 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:44,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:44,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1025315869, now seen corresponding path program 1 times [2022-01-10 05:19:44,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:44,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925006564] [2022-01-10 05:19:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:44,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:44,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:44,253 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:19:44,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 05:19:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:44,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:19:44,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 349 proven. 159 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 05:19:45,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:19:46,199 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 05:19:46,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:46,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925006564] [2022-01-10 05:19:46,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925006564] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 05:19:46,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 05:19:46,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 05:19:46,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806013695] [2022-01-10 05:19:46,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:19:46,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:19:46,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:46,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:19:46,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:19:46,201 INFO L87 Difference]: Start difference. First operand 1962 states and 2361 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 05:19:51,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:19:51,863 INFO L93 Difference]: Finished difference Result 4100 states and 5124 transitions. [2022-01-10 05:19:51,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:19:51,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 421 [2022-01-10 05:19:51,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:19:51,870 INFO L225 Difference]: With dead ends: 4100 [2022-01-10 05:19:51,870 INFO L226 Difference]: Without dead ends: 2496 [2022-01-10 05:19:51,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 837 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:19:51,872 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 116 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-01-10 05:19:51,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 212 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-01-10 05:19:51,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2022-01-10 05:19:51,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2496. [2022-01-10 05:19:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 1.2208416833667335) internal successors, (3046), 2495 states have internal predecessors, (3046), 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 05:19:51,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3046 transitions. [2022-01-10 05:19:51,905 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3046 transitions. Word has length 421 [2022-01-10 05:19:51,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:19:51,906 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 3046 transitions. [2022-01-10 05:19:51,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 05:19:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3046 transitions. [2022-01-10 05:19:51,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-01-10 05:19:51,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:19:51,909 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:19:51,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 05:19:52,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:19:52,130 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:19:52,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:19:52,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1919587515, now seen corresponding path program 1 times [2022-01-10 05:19:52,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:19:52,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379838404] [2022-01-10 05:19:52,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:19:52,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:19:52,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:19:52,133 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:19:52,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 05:19:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:19:52,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 05:19:52,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:19:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 299 proven. 277 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-01-10 05:19:53,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:19:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 547 proven. 29 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-01-10 05:19:59,158 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:19:59,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379838404] [2022-01-10 05:19:59,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379838404] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:19:59,158 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:19:59,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-01-10 05:19:59,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270538936] [2022-01-10 05:19:59,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:19:59,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 05:19:59,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:19:59,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 05:19:59,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 05:19:59,160 INFO L87 Difference]: Start difference. First operand 2496 states and 3046 transitions. Second operand has 7 states, 7 states have (on average 81.14285714285714) internal successors, (568), 7 states have internal predecessors, (568), 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)