/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/Problem11_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:58:25,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:58:25,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:58:25,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 04:58:25,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:58:25,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:58:25,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:58:25,148 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 04:58:25,171 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:58:25,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:58:25,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:58:25,172 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:58:25,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:58:25,172 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:58:25,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:58:25,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:58:25,173 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:58:25,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:58:25,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:58:25,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:58:25,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:58:25,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:58:25,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:58:25,174 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:58:25,174 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:58:25,175 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:58:25,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:58:25,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:58:25,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:58:25,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:58:25,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:58:25,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:58:25,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:58:25,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:58:25,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:58:25,176 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:58:25,176 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:58:25,176 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:58:25,176 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:58:25,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:58:25,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:58:25,177 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:58:25,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:58:25,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:58:25,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:58:25,397 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:58:25,397 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:58:25,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label06.c [2022-01-10 04:58:25,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e3795d29/b7a14b3cf5954893aa3ba53792da5904/FLAGcd37fdd1a [2022-01-10 04:58:25,965 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:58:25,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label06.c [2022-01-10 04:58:25,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e3795d29/b7a14b3cf5954893aa3ba53792da5904/FLAGcd37fdd1a [2022-01-10 04:58:26,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e3795d29/b7a14b3cf5954893aa3ba53792da5904 [2022-01-10 04:58:26,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:58:26,425 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:58:26,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:58:26,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:58:26,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:58:26,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:58:26" (1/1) ... [2022-01-10 04:58:26,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3113bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:26, skipping insertion in model container [2022-01-10 04:58:26,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:58:26" (1/1) ... [2022-01-10 04:58:26,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:58:26,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:58:26,722 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/Problem11_label06.c[9087,9100] [2022-01-10 04:58:26,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:58:26,889 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:58:26,920 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/Problem11_label06.c[9087,9100] [2022-01-10 04:58:27,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:58:27,028 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:58:27,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:27 WrapperNode [2022-01-10 04:58:27,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:58:27,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:58:27,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:58:27,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:58:27,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:27" (1/1) ... [2022-01-10 04:58:27,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:27" (1/1) ... [2022-01-10 04:58:27,119 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 997 [2022-01-10 04:58:27,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:58:27,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:58:27,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:58:27,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:58:27,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:27" (1/1) ... [2022-01-10 04:58:27,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:27" (1/1) ... [2022-01-10 04:58:27,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:27" (1/1) ... [2022-01-10 04:58:27,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:27" (1/1) ... [2022-01-10 04:58:27,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:27" (1/1) ... [2022-01-10 04:58:27,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:27" (1/1) ... [2022-01-10 04:58:27,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:27" (1/1) ... [2022-01-10 04:58:27,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:58:27,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:58:27,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:58:27,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:58:27,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:27" (1/1) ... [2022-01-10 04:58:27,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:58:27,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:58:27,214 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 04:58:27,255 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 04:58:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:58:27,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:58:27,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:58:27,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:58:27,324 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:58:27,325 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:58:33,320 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:58:33,328 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:58:33,328 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:58:33,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:58:33 BoogieIcfgContainer [2022-01-10 04:58:33,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:58:33,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:58:33,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:58:33,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:58:33,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:58:26" (1/3) ... [2022-01-10 04:58:33,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f4fb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:58:33, skipping insertion in model container [2022-01-10 04:58:33,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:27" (2/3) ... [2022-01-10 04:58:33,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f4fb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:58:33, skipping insertion in model container [2022-01-10 04:58:33,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:58:33" (3/3) ... [2022-01-10 04:58:33,337 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label06.c [2022-01-10 04:58:33,341 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:58:33,341 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:58:33,376 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:58:33,386 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 04:58:33,386 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:58:33,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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 04:58:33,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 04:58:33,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:58:33,404 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, 1, 1] [2022-01-10 04:58:33,405 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:58:33,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:58:33,408 INFO L85 PathProgramCache]: Analyzing trace with hash -696204111, now seen corresponding path program 1 times [2022-01-10 04:58:33,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:58:33,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908285643] [2022-01-10 04:58:33,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:58:33,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:58:33,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:58:33,419 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 04:58:33,420 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 04:58:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:58:33,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:58:33,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:58:33,654 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 04:58:33,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:58:33,655 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:58:33,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908285643] [2022-01-10 04:58:33,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908285643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:58:33,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:58:33,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:58:33,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840173387] [2022-01-10 04:58:33,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:58:33,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:58:33,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:58:33,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:58:33,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:58:33,692 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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 21.0) internal successors, (63), 2 states have internal predecessors, (63), 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 04:58:40,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:58:40,195 INFO L93 Difference]: Finished difference Result 775 states and 1362 transitions. [2022-01-10 04:58:40,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:58:40,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 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 63 [2022-01-10 04:58:40,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:58:40,217 INFO L225 Difference]: With dead ends: 775 [2022-01-10 04:58:40,217 INFO L226 Difference]: Without dead ends: 412 [2022-01-10 04:58:40,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 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 04:58:40,236 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 162 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:58:40,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 196 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-01-10 04:58:40,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-01-10 04:58:40,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 409. [2022-01-10 04:58:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 1.4583333333333333) internal successors, (595), 408 states have internal predecessors, (595), 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 04:58:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 595 transitions. [2022-01-10 04:58:40,318 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 595 transitions. Word has length 63 [2022-01-10 04:58:40,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:58:40,319 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 595 transitions. [2022-01-10 04:58:40,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 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 04:58:40,319 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 595 transitions. [2022-01-10 04:58:40,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 04:58:40,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:58:40,326 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:58:40,335 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 04:58:40,528 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 04:58:40,529 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:58:40,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:58:40,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1774038808, now seen corresponding path program 1 times [2022-01-10 04:58:40,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:58:40,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958133679] [2022-01-10 04:58:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:58:40,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:58:40,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:58:40,544 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 04:58:40,545 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 04:58:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:58:40,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:58:40,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:58:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:58:40,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:58:40,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:58:40,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958133679] [2022-01-10 04:58:40,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958133679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:58:40,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:58:40,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:58:40,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762408976] [2022-01-10 04:58:40,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:58:40,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:58:40,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:58:40,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:58:40,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:58:40,928 INFO L87 Difference]: Start difference. First operand 409 states and 595 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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 04:58:50,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:58:50,021 INFO L93 Difference]: Finished difference Result 1199 states and 1751 transitions. [2022-01-10 04:58:50,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:58:50,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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 131 [2022-01-10 04:58:50,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:58:50,032 INFO L225 Difference]: With dead ends: 1199 [2022-01-10 04:58:50,033 INFO L226 Difference]: Without dead ends: 792 [2022-01-10 04:58:50,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 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 04:58:50,035 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 132 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:58:50,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 183 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-01-10 04:58:50,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2022-01-10 04:58:50,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 781. [2022-01-10 04:58:50,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 780 states have (on average 1.3474358974358975) internal successors, (1051), 780 states have internal predecessors, (1051), 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 04:58:50,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1051 transitions. [2022-01-10 04:58:50,055 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1051 transitions. Word has length 131 [2022-01-10 04:58:50,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:58:50,055 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 1051 transitions. [2022-01-10 04:58:50,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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 04:58:50,055 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1051 transitions. [2022-01-10 04:58:50,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 04:58:50,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:58:50,057 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:58:50,066 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 04:58:50,265 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 04:58:50,266 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:58:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:58:50,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1449825501, now seen corresponding path program 1 times [2022-01-10 04:58:50,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:58:50,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552732356] [2022-01-10 04:58:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:58:50,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:58:50,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:58:50,269 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 04:58:50,270 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 04:58:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:58:50,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:58:50,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:58:50,621 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:58:50,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:58:50,621 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:58:50,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552732356] [2022-01-10 04:58:50,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552732356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:58:50,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:58:50,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:58:50,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509970729] [2022-01-10 04:58:50,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:58:50,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:58:50,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:58:50,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:58:50,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:58:50,623 INFO L87 Difference]: Start difference. First operand 781 states and 1051 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 04:58:57,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:58:57,426 INFO L93 Difference]: Finished difference Result 1929 states and 2651 transitions. [2022-01-10 04:58:57,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:58:57,432 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 04:58:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:58:57,436 INFO L225 Difference]: With dead ends: 1929 [2022-01-10 04:58:57,436 INFO L226 Difference]: Without dead ends: 1150 [2022-01-10 04:58:57,437 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 04:58:57,438 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 148 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-01-10 04:58:57,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 154 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-01-10 04:58:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2022-01-10 04:58:57,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1150. [2022-01-10 04:58:57,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 1.2567449956483898) internal successors, (1444), 1149 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:58:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1444 transitions. [2022-01-10 04:58:57,485 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1444 transitions. Word has length 134 [2022-01-10 04:58:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:58:57,486 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 1444 transitions. [2022-01-10 04:58:57,486 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 04:58:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1444 transitions. [2022-01-10 04:58:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 04:58:57,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:58:57,492 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:58:57,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 04:58:57,700 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 04:58:57,701 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:58:57,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:58:57,701 INFO L85 PathProgramCache]: Analyzing trace with hash -873825219, now seen corresponding path program 1 times [2022-01-10 04:58:57,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:58:57,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084378602] [2022-01-10 04:58:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:58:57,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:58:57,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:58:57,720 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 04:58:57,753 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 04:58:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:58:57,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:58:57,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:58:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:58:58,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:58:58,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:58:58,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084378602] [2022-01-10 04:58:58,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084378602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:58:58,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:58:58,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:58:58,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661506293] [2022-01-10 04:58:58,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:58:58,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:58:58,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:58:58,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:58:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:58:58,165 INFO L87 Difference]: Start difference. First operand 1150 states and 1444 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 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 04:59:05,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:59:05,225 INFO L93 Difference]: Finished difference Result 1948 states and 2632 transitions. [2022-01-10 04:59:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:59:05,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 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 190 [2022-01-10 04:59:05,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:59:05,239 INFO L225 Difference]: With dead ends: 1948 [2022-01-10 04:59:05,239 INFO L226 Difference]: Without dead ends: 1542 [2022-01-10 04:59:05,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 188 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 04:59:05,242 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 172 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:59:05,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 322 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-01-10 04:59:05,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2022-01-10 04:59:05,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1539. [2022-01-10 04:59:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1538 states have (on average 1.2711313394018204) internal successors, (1955), 1538 states have internal predecessors, (1955), 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 04:59:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 1955 transitions. [2022-01-10 04:59:05,284 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 1955 transitions. Word has length 190 [2022-01-10 04:59:05,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:59:05,287 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 1955 transitions. [2022-01-10 04:59:05,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 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 04:59:05,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 1955 transitions. [2022-01-10 04:59:05,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-01-10 04:59:05,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:59:05,292 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, 3, 3, 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] [2022-01-10 04:59:05,303 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 04:59:05,503 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 04:59:05,505 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:59:05,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:59:05,506 INFO L85 PathProgramCache]: Analyzing trace with hash 2018651707, now seen corresponding path program 1 times [2022-01-10 04:59:05,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:59:05,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713442883] [2022-01-10 04:59:05,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:59:05,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:59:05,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:59:05,511 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 04:59:05,512 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 04:59:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:59:05,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:59:05,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:59:06,076 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:59:06,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:59:06,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:59:06,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713442883] [2022-01-10 04:59:06,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713442883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:59:06,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:59:06,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:59:06,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668351891] [2022-01-10 04:59:06,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:59:06,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:59:06,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:59:06,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:59:06,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:59:06,081 INFO L87 Difference]: Start difference. First operand 1539 states and 1955 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 04:59:11,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:59:11,948 INFO L93 Difference]: Finished difference Result 3279 states and 4345 transitions. [2022-01-10 04:59:11,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:59:11,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 243 [2022-01-10 04:59:11,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:59:11,960 INFO L225 Difference]: With dead ends: 3279 [2022-01-10 04:59:11,960 INFO L226 Difference]: Without dead ends: 2110 [2022-01-10 04:59:11,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 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 04:59:11,963 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 136 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:59:11,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 340 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-01-10 04:59:11,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2022-01-10 04:59:11,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2097. [2022-01-10 04:59:11,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 2096 states have (on average 1.2533396946564885) internal successors, (2627), 2096 states have internal predecessors, (2627), 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 04:59:11,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2627 transitions. [2022-01-10 04:59:11,985 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2627 transitions. Word has length 243 [2022-01-10 04:59:11,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:59:11,985 INFO L470 AbstractCegarLoop]: Abstraction has 2097 states and 2627 transitions. [2022-01-10 04:59:11,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 04:59:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2627 transitions. [2022-01-10 04:59:11,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-01-10 04:59:11,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:59:11,988 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, 3, 3, 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 04:59:11,997 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 04:59:12,196 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 04:59:12,197 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:59:12,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:59:12,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1921693749, now seen corresponding path program 1 times [2022-01-10 04:59:12,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:59:12,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202267870] [2022-01-10 04:59:12,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:59:12,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:59:12,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:59:12,201 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 04:59:12,202 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 04:59:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:59:12,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 04:59:12,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:59:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 121 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:59:13,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:59:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:59:15,947 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:59:15,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202267870] [2022-01-10 04:59:15,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202267870] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 04:59:15,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 04:59:15,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 04:59:15,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725021712] [2022-01-10 04:59:15,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:59:15,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:59:15,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:59:15,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:59:15,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:59:15,948 INFO L87 Difference]: Start difference. First operand 2097 states and 2627 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 04:59:36,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:59:36,427 INFO L93 Difference]: Finished difference Result 3819 states and 5004 transitions. [2022-01-10 04:59:36,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:59:36,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 244 [2022-01-10 04:59:36,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:59:36,434 INFO L225 Difference]: With dead ends: 3819 [2022-01-10 04:59:36,434 INFO L226 Difference]: Without dead ends: 2650 [2022-01-10 04:59:36,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 483 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 04:59:36,436 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 152 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:59:36,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 37 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 20.4s Time] [2022-01-10 04:59:36,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2022-01-10 04:59:36,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2650. [2022-01-10 04:59:36,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2649 states have (on average 1.2778406946017364) internal successors, (3385), 2649 states have internal predecessors, (3385), 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 04:59:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3385 transitions. [2022-01-10 04:59:36,463 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3385 transitions. Word has length 244 [2022-01-10 04:59:36,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:59:36,463 INFO L470 AbstractCegarLoop]: Abstraction has 2650 states and 3385 transitions. [2022-01-10 04:59:36,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 04:59:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3385 transitions. [2022-01-10 04:59:36,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-01-10 04:59:36,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:59:36,466 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, 3, 3, 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 04:59:36,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 04:59:36,675 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 04:59:36,676 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:59:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:59:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1738988199, now seen corresponding path program 1 times [2022-01-10 04:59:36,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:59:36,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695591013] [2022-01-10 04:59:36,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:59:36,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:59:36,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:59:36,680 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 04:59:36,681 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 04:59:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:59:36,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 04:59:36,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:59:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:59:38,153 INFO L328 TraceCheckSpWp]: Computing backward predicates...