/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/Problem10_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:53:21,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:53:21,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:53:21,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 04:53:21,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:53:21,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:53:21,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:53:21,189 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 04:53:21,212 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:53:21,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:53:21,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:53:21,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:53:21,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:53:21,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:53:21,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:53:21,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:53:21,214 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:53:21,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:53:21,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:53:21,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:53:21,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:53:21,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:53:21,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:53:21,215 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:53:21,215 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:53:21,215 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:53:21,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:53:21,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:53:21,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:53:21,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:53:21,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:53:21,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:53:21,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:53:21,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:53:21,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:53:21,216 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:53:21,216 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:53:21,216 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:53:21,216 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:53:21,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:53:21,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:53:21,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:53:21,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:53:21,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:53:21,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:53:21,413 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:53:21,414 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:53:21,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2022-01-10 04:53:21,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f19c12e88/0f0de87d89514378b13d9a45ed1e04ce/FLAGc4df26d78 [2022-01-10 04:53:21,822 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:53:21,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2022-01-10 04:53:21,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f19c12e88/0f0de87d89514378b13d9a45ed1e04ce/FLAGc4df26d78 [2022-01-10 04:53:21,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f19c12e88/0f0de87d89514378b13d9a45ed1e04ce [2022-01-10 04:53:21,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:53:21,852 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:53:21,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:53:21,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:53:21,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:53:21,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:53:21" (1/1) ... [2022-01-10 04:53:21,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c057351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:53:21, skipping insertion in model container [2022-01-10 04:53:21,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:53:21" (1/1) ... [2022-01-10 04:53:21,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:53:21,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:53:22,117 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/Problem10_label11.c[6968,6981] [2022-01-10 04:53:22,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:53:22,246 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:53:22,275 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/Problem10_label11.c[6968,6981] [2022-01-10 04:53:22,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:53:22,332 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:53:22,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:53:22 WrapperNode [2022-01-10 04:53:22,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:53:22,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:53:22,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:53:22,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:53:22,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:53:22" (1/1) ... [2022-01-10 04:53:22,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:53:22" (1/1) ... [2022-01-10 04:53:22,386 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 595 [2022-01-10 04:53:22,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:53:22,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:53:22,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:53:22,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:53:22,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:53:22" (1/1) ... [2022-01-10 04:53:22,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:53:22" (1/1) ... [2022-01-10 04:53:22,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:53:22" (1/1) ... [2022-01-10 04:53:22,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:53:22" (1/1) ... [2022-01-10 04:53:22,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:53:22" (1/1) ... [2022-01-10 04:53:22,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:53:22" (1/1) ... [2022-01-10 04:53:22,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:53:22" (1/1) ... [2022-01-10 04:53:22,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:53:22,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:53:22,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:53:22,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:53:22,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:53:22" (1/1) ... [2022-01-10 04:53:22,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:53:22,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:53:22,497 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 04:53:22,512 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 04:53:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:53:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:53:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:53:22,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:53:22,566 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:53:22,567 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:53:24,284 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:53:24,290 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:53:24,290 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:53:24,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:53:24 BoogieIcfgContainer [2022-01-10 04:53:24,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:53:24,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:53:24,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:53:24,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:53:24,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:53:21" (1/3) ... [2022-01-10 04:53:24,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5533c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:53:24, skipping insertion in model container [2022-01-10 04:53:24,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:53:22" (2/3) ... [2022-01-10 04:53:24,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5533c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:53:24, skipping insertion in model container [2022-01-10 04:53:24,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:53:24" (3/3) ... [2022-01-10 04:53:24,298 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2022-01-10 04:53:24,301 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:53:24,301 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:53:24,335 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:53:24,344 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 04:53:24,344 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:53:24,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 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 04:53:24,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 04:53:24,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:53:24,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:53:24,368 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:53:24,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:53:24,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1818267785, now seen corresponding path program 1 times [2022-01-10 04:53:24,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:53:24,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422293801] [2022-01-10 04:53:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:53:24,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:53:24,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:53:24,384 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 04:53:24,396 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 04:53:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:53:24,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:53:24,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:53:24,647 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 04:53:24,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:53:24,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:53:24,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422293801] [2022-01-10 04:53:24,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422293801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:53:24,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:53:24,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:53:24,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378460481] [2022-01-10 04:53:24,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:53:24,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:53:24,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:53:24,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:53:24,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:53:24,678 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 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 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 04:53:26,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:53:26,772 INFO L93 Difference]: Finished difference Result 552 states and 966 transitions. [2022-01-10 04:53:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:53:26,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 04:53:26,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:53:26,782 INFO L225 Difference]: With dead ends: 552 [2022-01-10 04:53:26,783 INFO L226 Difference]: Without dead ends: 282 [2022-01-10 04:53:26,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 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 04:53:26,787 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 102 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:53:26,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 120 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 04:53:26,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-10 04:53:26,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-01-10 04:53:26,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.3416370106761566) internal successors, (377), 281 states have internal predecessors, (377), 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 04:53:26,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 377 transitions. [2022-01-10 04:53:26,826 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 377 transitions. Word has length 61 [2022-01-10 04:53:26,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:53:26,827 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 377 transitions. [2022-01-10 04:53:26,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 04:53:26,827 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 377 transitions. [2022-01-10 04:53:26,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 04:53:26,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:53:26,830 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:53:26,838 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 04:53:27,036 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 04:53:27,037 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:53:27,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:53:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash -270262724, now seen corresponding path program 1 times [2022-01-10 04:53:27,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:53:27,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242065822] [2022-01-10 04:53:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:53:27,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:53:27,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:53:27,040 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 04:53:27,048 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 04:53:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:53:27,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:53:27,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:53:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:53:27,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:53:27,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:53:27,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242065822] [2022-01-10 04:53:27,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242065822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:53:27,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:53:27,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:53:27,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295941712] [2022-01-10 04:53:27,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:53:27,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:53:27,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:53:27,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:53:27,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:53:27,291 INFO L87 Difference]: Start difference. First operand 282 states and 377 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 04:53:29,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:53:29,727 INFO L93 Difference]: Finished difference Result 701 states and 967 transitions. [2022-01-10 04:53:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:53:29,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 04:53:29,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:53:29,731 INFO L225 Difference]: With dead ends: 701 [2022-01-10 04:53:29,731 INFO L226 Difference]: Without dead ends: 421 [2022-01-10 04:53:29,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 04:53:29,733 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 85 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:53:29,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 215 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 04:53:29,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-01-10 04:53:29,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2022-01-10 04:53:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.2523809523809524) internal successors, (526), 420 states have internal predecessors, (526), 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 04:53:29,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 526 transitions. [2022-01-10 04:53:29,778 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 526 transitions. Word has length 127 [2022-01-10 04:53:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:53:29,779 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 526 transitions. [2022-01-10 04:53:29,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 04:53:29,779 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 526 transitions. [2022-01-10 04:53:29,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 04:53:29,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:53:29,788 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:53:29,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 04:53:29,995 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 04:53:29,995 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:53:29,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:53:29,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1197684053, now seen corresponding path program 1 times [2022-01-10 04:53:29,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:53:29,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97029069] [2022-01-10 04:53:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:53:29,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:53:29,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:53:29,998 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 04:53:30,000 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 04:53:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:53:30,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:53:30,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:53:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:53:30,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:53:30,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:53:30,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97029069] [2022-01-10 04:53:30,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97029069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:53:30,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:53:30,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:53:30,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616037624] [2022-01-10 04:53:30,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:53:30,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:53:30,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:53:30,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:53:30,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:53:30,490 INFO L87 Difference]: Start difference. First operand 421 states and 526 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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 04:53:32,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:53:32,138 INFO L93 Difference]: Finished difference Result 979 states and 1209 transitions. [2022-01-10 04:53:32,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:53:32,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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 134 [2022-01-10 04:53:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:53:32,147 INFO L225 Difference]: With dead ends: 979 [2022-01-10 04:53:32,147 INFO L226 Difference]: Without dead ends: 560 [2022-01-10 04:53:32,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 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 04:53:32,155 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 68 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:53:32,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 77 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 04:53:32,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-01-10 04:53:32,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2022-01-10 04:53:32,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.2075134168157424) internal successors, (675), 559 states have internal predecessors, (675), 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 04:53:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 675 transitions. [2022-01-10 04:53:32,178 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 675 transitions. Word has length 134 [2022-01-10 04:53:32,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:53:32,179 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 675 transitions. [2022-01-10 04:53:32,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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 04:53:32,179 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 675 transitions. [2022-01-10 04:53:32,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 04:53:32,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:53:32,180 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:53:32,189 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 04:53:32,387 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 04:53:32,388 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:53:32,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:53:32,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1373872592, now seen corresponding path program 1 times [2022-01-10 04:53:32,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:53:32,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050568742] [2022-01-10 04:53:32,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:53:32,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:53:32,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:53:32,390 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 04:53:32,392 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 04:53:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:53:32,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:53:32,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:53:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:53:32,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:53:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:53:34,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:53:34,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050568742] [2022-01-10 04:53:34,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050568742] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:53:34,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:53:34,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 04:53:34,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569427410] [2022-01-10 04:53:34,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:53:34,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 04:53:34,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:53:34,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 04:53:34,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:53:34,796 INFO L87 Difference]: Start difference. First operand 560 states and 675 transitions. Second operand has 7 states, 7 states have (on average 33.0) internal successors, (231), 6 states have internal predecessors, (231), 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 04:53:56,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 04:54:02,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 04:54:08,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:54:08,566 INFO L93 Difference]: Finished difference Result 1714 states and 2191 transitions. [2022-01-10 04:54:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 04:54:08,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.0) internal successors, (231), 6 states have internal predecessors, (231), 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 136 [2022-01-10 04:54:08,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:54:08,596 INFO L225 Difference]: With dead ends: 1714 [2022-01-10 04:54:08,596 INFO L226 Difference]: Without dead ends: 979 [2022-01-10 04:54:08,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 04:54:08,598 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 648 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:54:08,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 54 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 33.6s Time] [2022-01-10 04:54:08,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2022-01-10 04:54:08,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 560. [2022-01-10 04:54:08,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.2021466905187836) internal successors, (672), 559 states have internal predecessors, (672), 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 04:54:08,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 672 transitions. [2022-01-10 04:54:08,616 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 672 transitions. Word has length 136 [2022-01-10 04:54:08,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:54:08,616 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 672 transitions. [2022-01-10 04:54:08,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.0) internal successors, (231), 6 states have internal predecessors, (231), 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 04:54:08,616 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 672 transitions. [2022-01-10 04:54:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 04:54:08,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:54:08,618 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:54:08,628 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 04:54:08,819 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 04:54:08,819 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:54:08,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:54:08,820 INFO L85 PathProgramCache]: Analyzing trace with hash 19499768, now seen corresponding path program 1 times [2022-01-10 04:54:08,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:54:08,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432019242] [2022-01-10 04:54:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:54:08,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:54:08,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:54:08,822 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 04:54:08,828 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 04:54:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:54:08,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:54:08,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:54:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:54:09,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:54:09,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:54:09,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432019242] [2022-01-10 04:54:09,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432019242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:54:09,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:54:09,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:54:09,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823982301] [2022-01-10 04:54:09,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:54:09,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:54:09,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:54:09,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:54:09,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:54:09,115 INFO L87 Difference]: Start difference. First operand 560 states and 672 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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 04:54:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:54:11,240 INFO L93 Difference]: Finished difference Result 1396 states and 1715 transitions. [2022-01-10 04:54:11,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:54:11,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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 152 [2022-01-10 04:54:11,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:54:11,243 INFO L225 Difference]: With dead ends: 1396 [2022-01-10 04:54:11,244 INFO L226 Difference]: Without dead ends: 977 [2022-01-10 04:54:11,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 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 04:54:11,245 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 85 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:54:11,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 36 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 04:54:11,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-01-10 04:54:11,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 838. [2022-01-10 04:54:11,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.1983273596176822) internal successors, (1003), 837 states have internal predecessors, (1003), 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 04:54:11,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1003 transitions. [2022-01-10 04:54:11,257 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1003 transitions. Word has length 152 [2022-01-10 04:54:11,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:54:11,258 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1003 transitions. [2022-01-10 04:54:11,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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 04:54:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1003 transitions. [2022-01-10 04:54:11,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-01-10 04:54:11,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:54:11,261 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:54:11,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 04:54:11,468 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 04:54:11,468 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:54:11,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:54:11,469 INFO L85 PathProgramCache]: Analyzing trace with hash 860034594, now seen corresponding path program 1 times [2022-01-10 04:54:11,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:54:11,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148479894] [2022-01-10 04:54:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:54:11,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:54:11,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:54:11,471 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 04:54:11,497 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 04:54:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:54:11,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:54:11,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:54:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-01-10 04:54:11,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:54:11,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:54:11,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148479894] [2022-01-10 04:54:11,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148479894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:54:11,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:54:11,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:54:11,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425359481] [2022-01-10 04:54:11,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:54:11,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:54:11,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:54:11,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:54:11,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:54:11,883 INFO L87 Difference]: Start difference. First operand 838 states and 1003 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 04:54:14,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:54:14,086 INFO L93 Difference]: Finished difference Result 1813 states and 2263 transitions. [2022-01-10 04:54:14,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:54:14,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 240 [2022-01-10 04:54:14,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:54:14,090 INFO L225 Difference]: With dead ends: 1813 [2022-01-10 04:54:14,090 INFO L226 Difference]: Without dead ends: 1116 [2022-01-10 04:54:14,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 238 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 04:54:14,093 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 93 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:54:14,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 195 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 04:54:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-01-10 04:54:14,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1116. [2022-01-10 04:54:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 1.1937219730941704) internal successors, (1331), 1115 states have internal predecessors, (1331), 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 04:54:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1331 transitions. [2022-01-10 04:54:14,109 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1331 transitions. Word has length 240 [2022-01-10 04:54:14,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:54:14,109 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1331 transitions. [2022-01-10 04:54:14,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 04:54:14,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1331 transitions. [2022-01-10 04:54:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-01-10 04:54:14,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:54:14,112 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:54:14,122 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 04:54:14,320 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 04:54:14,320 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:54:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:54:14,321 INFO L85 PathProgramCache]: Analyzing trace with hash -872827254, now seen corresponding path program 1 times [2022-01-10 04:54:14,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:54:14,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148520553] [2022-01-10 04:54:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:54:14,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:54:14,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:54:14,323 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 04:54:14,325 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 04:54:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:54:14,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 04:54:14,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:54:15,130 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 86 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:54:15,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:54:34,052 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 86 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:54:34,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:54:34,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148520553] [2022-01-10 04:54:34,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148520553] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:54:34,052 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:54:34,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-01-10 04:54:34,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56307478] [2022-01-10 04:54:34,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:54:34,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 04:54:34,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:54:34,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 04:54:34,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 04:54:34,054 INFO L87 Difference]: Start difference. First operand 1116 states and 1331 transitions. Second operand has 8 states, 8 states have (on average 71.75) internal successors, (574), 7 states have internal predecessors, (574), 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)