/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_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:01:20,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:01:20,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:01:20,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 05:01:20,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:01:20,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:01:20,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:01:20,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 05:01:20,249 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:01:20,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:01:20,250 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:01:20,250 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:01:20,251 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:01:20,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:01:20,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:01:20,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:01:20,252 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:01:20,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:01:20,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:01:20,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:01:20,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:01:20,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:01:20,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:01:20,252 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:01:20,252 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:01:20,252 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:01:20,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:01:20,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:01:20,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:01:20,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:01:20,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:01:20,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:01:20,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:01:20,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:01:20,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:01:20,253 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:01:20,253 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:01:20,254 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:01:20,254 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:01:20,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:01:20,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:01:20,254 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:01:20,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:01:20,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:01:20,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:01:20,478 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:01:20,478 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:01:20,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label37.c [2022-01-10 05:01:20,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9a70dd54/670a0f34d25047878ab96afa2f91249f/FLAG988d0cd64 [2022-01-10 05:01:20,976 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:01:20,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label37.c [2022-01-10 05:01:21,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9a70dd54/670a0f34d25047878ab96afa2f91249f/FLAG988d0cd64 [2022-01-10 05:01:21,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9a70dd54/670a0f34d25047878ab96afa2f91249f [2022-01-10 05:01:21,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:01:21,013 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:01:21,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:01:21,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:01:21,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:01:21,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:01:21" (1/1) ... [2022-01-10 05:01:21,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65604cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:21, skipping insertion in model container [2022-01-10 05:01:21,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:01:21" (1/1) ... [2022-01-10 05:01:21,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:01:21,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:01:21,257 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_label37.c[7136,7149] [2022-01-10 05:01:21,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:01:21,455 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:01:21,481 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_label37.c[7136,7149] [2022-01-10 05:01:21,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:01:21,584 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:01:21,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:21 WrapperNode [2022-01-10 05:01:21,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:01:21,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:01:21,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:01:21,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:01:21,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:21" (1/1) ... [2022-01-10 05:01:21,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:21" (1/1) ... [2022-01-10 05:01:21,669 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 997 [2022-01-10 05:01:21,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:01:21,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:01:21,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:01:21,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:01:21,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:21" (1/1) ... [2022-01-10 05:01:21,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:21" (1/1) ... [2022-01-10 05:01:21,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:21" (1/1) ... [2022-01-10 05:01:21,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:21" (1/1) ... [2022-01-10 05:01:21,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:21" (1/1) ... [2022-01-10 05:01:21,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:21" (1/1) ... [2022-01-10 05:01:21,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:21" (1/1) ... [2022-01-10 05:01:21,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:01:21,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:01:21,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:01:21,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:01:21,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:21" (1/1) ... [2022-01-10 05:01:21,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:01:21,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:01:21,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 05:01:21,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 05:01:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:01:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:01:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:01:21,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:01:21,869 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:01:21,870 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:01:27,476 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:01:27,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:01:27,483 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:01:27,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:01:27 BoogieIcfgContainer [2022-01-10 05:01:27,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:01:27,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:01:27,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:01:27,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:01:27,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:01:21" (1/3) ... [2022-01-10 05:01:27,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1542b755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:01:27, skipping insertion in model container [2022-01-10 05:01:27,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:21" (2/3) ... [2022-01-10 05:01:27,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1542b755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:01:27, skipping insertion in model container [2022-01-10 05:01:27,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:01:27" (3/3) ... [2022-01-10 05:01:27,490 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label37.c [2022-01-10 05:01:27,499 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:01:27,499 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:01:27,533 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:01:27,538 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 05:01:27,538 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:01:27,552 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 05:01:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 05:01:27,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:01:27,558 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] [2022-01-10 05:01:27,559 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:01:27,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:01:27,562 INFO L85 PathProgramCache]: Analyzing trace with hash 301649817, now seen corresponding path program 1 times [2022-01-10 05:01:27,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:01:27,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838986925] [2022-01-10 05:01:27,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:01:27,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:01:27,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:01:27,577 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:01:27,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 05:01:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:01:27,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:01:27,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:01:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:01:27,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:01:27,883 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:01:27,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838986925] [2022-01-10 05:01:27,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838986925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:01:27,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:01:27,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:01:27,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149123239] [2022-01-10 05:01:27,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:01:27,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:01:27,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:01:27,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:01:27,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:27,918 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 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:01:35,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:01:35,305 INFO L93 Difference]: Finished difference Result 764 states and 1354 transitions. [2022-01-10 05:01:35,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:01:35,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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 49 [2022-01-10 05:01:35,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:01:35,323 INFO L225 Difference]: With dead ends: 764 [2022-01-10 05:01:35,323 INFO L226 Difference]: Without dead ends: 417 [2022-01-10 05:01:35,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:35,332 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 168 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-01-10 05:01:35,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 193 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-01-10 05:01:35,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-01-10 05:01:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 408. [2022-01-10 05:01:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 1.484029484029484) internal successors, (604), 407 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:01:35,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 604 transitions. [2022-01-10 05:01:35,372 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 604 transitions. Word has length 49 [2022-01-10 05:01:35,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:01:35,373 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 604 transitions. [2022-01-10 05:01:35,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:01:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 604 transitions. [2022-01-10 05:01:35,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 05:01:35,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:01:35,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:01:35,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 05:01:35,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:01:35,584 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:01:35,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:01:35,585 INFO L85 PathProgramCache]: Analyzing trace with hash -780930789, now seen corresponding path program 1 times [2022-01-10 05:01:35,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:01:35,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127354925] [2022-01-10 05:01:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:01:35,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:01:35,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:01:35,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:01:35,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 05:01:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:01:35,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:01:35,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:01:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:01:36,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:01:36,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:01:36,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127354925] [2022-01-10 05:01:36,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127354925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:01:36,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:01:36,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:01:36,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788340882] [2022-01-10 05:01:36,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:01:36,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:01:36,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:01:36,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:01:36,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:36,194 INFO L87 Difference]: Start difference. First operand 408 states and 604 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:01:42,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:01:42,298 INFO L93 Difference]: Finished difference Result 1001 states and 1456 transitions. [2022-01-10 05:01:42,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:01:42,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 115 [2022-01-10 05:01:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:01:42,308 INFO L225 Difference]: With dead ends: 1001 [2022-01-10 05:01:42,308 INFO L226 Difference]: Without dead ends: 595 [2022-01-10 05:01:42,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:42,310 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 123 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-01-10 05:01:42,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 175 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-01-10 05:01:42,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-01-10 05:01:42,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 592. [2022-01-10 05:01:42,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 1.3637901861252115) internal successors, (806), 591 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:01:42,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 806 transitions. [2022-01-10 05:01:42,334 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 806 transitions. Word has length 115 [2022-01-10 05:01:42,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:01:42,334 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 806 transitions. [2022-01-10 05:01:42,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:01:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 806 transitions. [2022-01-10 05:01:42,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 05:01:42,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:01:42,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:01:42,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 05:01:42,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:01:42,555 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:01:42,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:01:42,556 INFO L85 PathProgramCache]: Analyzing trace with hash -751552539, now seen corresponding path program 1 times [2022-01-10 05:01:42,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:01:42,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904874893] [2022-01-10 05:01:42,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:01:42,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:01:42,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:01:42,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:01:42,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 05:01:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:01:42,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:01:42,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:01:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:01:42,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:01:42,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:01:42,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904874893] [2022-01-10 05:01:42,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904874893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:01:42,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:01:42,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:01:42,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347412594] [2022-01-10 05:01:42,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:01:42,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:01:42,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:01:42,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:01:42,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:42,841 INFO L87 Difference]: Start difference. First operand 592 states and 806 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:01:49,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:01:49,053 INFO L93 Difference]: Finished difference Result 1556 states and 2168 transitions. [2022-01-10 05:01:49,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:01:49,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 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 120 [2022-01-10 05:01:49,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:01:49,062 INFO L225 Difference]: With dead ends: 1556 [2022-01-10 05:01:49,062 INFO L226 Difference]: Without dead ends: 966 [2022-01-10 05:01:49,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:49,063 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 148 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s 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, 6.2s IncrementalHoareTripleChecker+Time [2022-01-10 05:01:49,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 154 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-01-10 05:01:49,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-01-10 05:01:49,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2022-01-10 05:01:49,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 965 states have (on average 1.2870466321243523) internal successors, (1242), 965 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:01:49,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1242 transitions. [2022-01-10 05:01:49,083 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1242 transitions. Word has length 120 [2022-01-10 05:01:49,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:01:49,084 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 1242 transitions. [2022-01-10 05:01:49,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:01:49,084 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1242 transitions. [2022-01-10 05:01:49,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 05:01:49,086 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:01:49,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:01:49,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 05:01:49,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:01:49,287 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:01:49,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:01:49,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2073470789, now seen corresponding path program 1 times [2022-01-10 05:01:49,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:01:49,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928060719] [2022-01-10 05:01:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:01:49,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:01:49,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:01:49,290 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:01:49,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 05:01:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:01:49,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:01:49,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:01:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:01:49,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:01:49,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:01:49,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928060719] [2022-01-10 05:01:49,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928060719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:01:49,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:01:49,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:01:49,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665171114] [2022-01-10 05:01:49,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:01:49,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:01:49,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:01:49,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:01:49,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:49,598 INFO L87 Difference]: Start difference. First operand 966 states and 1242 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:01:56,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:01:56,172 INFO L93 Difference]: Finished difference Result 1764 states and 2430 transitions. [2022-01-10 05:01:56,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:01:56,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 176 [2022-01-10 05:01:56,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:01:56,185 INFO L225 Difference]: With dead ends: 1764 [2022-01-10 05:01:56,185 INFO L226 Difference]: Without dead ends: 1358 [2022-01-10 05:01:56,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:56,186 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 186 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 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, 6.5s IncrementalHoareTripleChecker+Time [2022-01-10 05:01:56,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 322 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-01-10 05:01:56,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2022-01-10 05:01:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1355. [2022-01-10 05:01:56,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1354 states have (on average 1.2946824224519942) internal successors, (1753), 1354 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:01:56,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 1753 transitions. [2022-01-10 05:01:56,204 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 1753 transitions. Word has length 176 [2022-01-10 05:01:56,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:01:56,204 INFO L470 AbstractCegarLoop]: Abstraction has 1355 states and 1753 transitions. [2022-01-10 05:01:56,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:01:56,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 1753 transitions. [2022-01-10 05:01:56,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-01-10 05:01:56,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:01:56,208 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, 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] [2022-01-10 05:01:56,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 05:01:56,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:01:56,417 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:01:56,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:01:56,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1461355619, now seen corresponding path program 1 times [2022-01-10 05:01:56,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:01:56,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087542764] [2022-01-10 05:01:56,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:01:56,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:01:56,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:01:56,420 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:01:56,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 05:01:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:01:56,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:01:56,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:01:56,868 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:01:56,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:01:56,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:01:56,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087542764] [2022-01-10 05:01:56,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087542764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:01:56,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:01:56,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:01:56,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064648834] [2022-01-10 05:01:56,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:01:56,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:01:56,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:01:56,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:01:56,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:56,870 INFO L87 Difference]: Start difference. First operand 1355 states and 1753 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:02:03,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:02:03,409 INFO L93 Difference]: Finished difference Result 3095 states and 4143 transitions. [2022-01-10 05:02:03,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:02:03,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 229 [2022-01-10 05:02:03,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:02:03,426 INFO L225 Difference]: With dead ends: 3095 [2022-01-10 05:02:03,426 INFO L226 Difference]: Without dead ends: 1926 [2022-01-10 05:02:03,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:02:03,428 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 137 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-01-10 05:02:03,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 339 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-01-10 05:02:03,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2022-01-10 05:02:03,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1913. [2022-01-10 05:02:03,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1912 states have (on average 1.2688284518828452) internal successors, (2426), 1912 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:02:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2426 transitions. [2022-01-10 05:02:03,449 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2426 transitions. Word has length 229 [2022-01-10 05:02:03,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:02:03,449 INFO L470 AbstractCegarLoop]: Abstraction has 1913 states and 2426 transitions. [2022-01-10 05:02:03,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:02:03,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2426 transitions. [2022-01-10 05:02:03,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-01-10 05:02:03,451 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:02:03,451 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, 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] [2022-01-10 05:02:03,463 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 05:02:03,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:02:03,657 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:02:03,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:02:03,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1594195875, now seen corresponding path program 1 times [2022-01-10 05:02:03,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:02:03,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715481103] [2022-01-10 05:02:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:02:03,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:02:03,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:02:03,659 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:02:03,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 05:02:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:02:03,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 05:02:03,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:02:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 93 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:02:04,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:02:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:02:07,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:02:07,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715481103] [2022-01-10 05:02:07,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715481103] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 05:02:07,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 05:02:07,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 05:02:07,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686980945] [2022-01-10 05:02:07,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:02:07,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:02:07,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:02:07,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:02:07,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:02:07,070 INFO L87 Difference]: Start difference. First operand 1913 states and 2426 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:02:27,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:02:27,221 INFO L93 Difference]: Finished difference Result 3635 states and 4804 transitions. [2022-01-10 05:02:27,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:02:27,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 230 [2022-01-10 05:02:27,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:02:27,228 INFO L225 Difference]: With dead ends: 3635 [2022-01-10 05:02:27,228 INFO L226 Difference]: Without dead ends: 2466 [2022-01-10 05:02:27,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:02:27,242 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 152 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s 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, 20.1s IncrementalHoareTripleChecker+Time [2022-01-10 05:02:27,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 37 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 20.1s Time] [2022-01-10 05:02:27,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2022-01-10 05:02:27,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2466. [2022-01-10 05:02:27,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2465 states have (on average 1.2941176470588236) internal successors, (3190), 2465 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:02:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3190 transitions. [2022-01-10 05:02:27,270 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3190 transitions. Word has length 230 [2022-01-10 05:02:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:02:27,271 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 3190 transitions. [2022-01-10 05:02:27,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:02:27,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3190 transitions. [2022-01-10 05:02:27,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-01-10 05:02:27,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:02:27,273 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 05:02:27,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 05:02:27,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:02:27,482 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:02:27,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:02:27,483 INFO L85 PathProgramCache]: Analyzing trace with hash 403867649, now seen corresponding path program 1 times [2022-01-10 05:02:27,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:02:27,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888739744] [2022-01-10 05:02:27,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:02:27,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:02:27,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:02:27,487 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:02:27,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 05:02:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:02:27,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 05:02:27,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:02:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 72 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:02:29,843 INFO L328 TraceCheckSpWp]: Computing backward predicates...