/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:52:47,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:52:47,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:52:47,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 04:52:47,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:52:47,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:52:47,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:52:47,783 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 04:52:47,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:52:47,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:52:47,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:52:47,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:52:47,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:52:47,797 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:52:47,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:52:47,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:52:47,798 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:52:47,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:52:47,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:52:47,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:52:47,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:52:47,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:52:47,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:52:47,799 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:52:47,799 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:52:47,799 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:52:47,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:52:47,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:52:47,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:52:47,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:52:47,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:52:47,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:52:47,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:52:47,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:52:47,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:52:47,800 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:52:47,800 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:52:47,800 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:52:47,800 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:52:47,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:52:47,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:52:47,800 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:52:48,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:52:48,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:52:48,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:52:48,054 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:52:48,056 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:52:48,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2022-01-10 04:52:48,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8b2359f/ba0e9353c5cf44c0b313fb517718f6c6/FLAG52a94969a [2022-01-10 04:52:48,447 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:52:48,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2022-01-10 04:52:48,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8b2359f/ba0e9353c5cf44c0b313fb517718f6c6/FLAG52a94969a [2022-01-10 04:52:48,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8b2359f/ba0e9353c5cf44c0b313fb517718f6c6 [2022-01-10 04:52:48,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:52:48,827 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:52:48,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:52:48,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:52:48,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:52:48,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:52:48" (1/1) ... [2022-01-10 04:52:48,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ddbfc48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:48, skipping insertion in model container [2022-01-10 04:52:48,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:52:48" (1/1) ... [2022-01-10 04:52:48,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:52:48,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:52:49,076 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label03.c[4220,4233] [2022-01-10 04:52:49,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:52:49,214 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:52:49,229 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label03.c[4220,4233] [2022-01-10 04:52:49,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:52:49,296 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:52:49,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:49 WrapperNode [2022-01-10 04:52:49,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:52:49,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:52:49,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:52:49,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:52:49,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:49" (1/1) ... [2022-01-10 04:52:49,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:49" (1/1) ... [2022-01-10 04:52:49,380 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 595 [2022-01-10 04:52:49,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:52:49,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:52:49,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:52:49,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:52:49,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:49" (1/1) ... [2022-01-10 04:52:49,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:49" (1/1) ... [2022-01-10 04:52:49,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:49" (1/1) ... [2022-01-10 04:52:49,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:49" (1/1) ... [2022-01-10 04:52:49,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:49" (1/1) ... [2022-01-10 04:52:49,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:49" (1/1) ... [2022-01-10 04:52:49,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:49" (1/1) ... [2022-01-10 04:52:49,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:52:49,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:52:49,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:52:49,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:52:49,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:49" (1/1) ... [2022-01-10 04:52:49,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:52:49,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:52:49,464 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 04:52:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:52:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:52:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:52:49,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:52:49,524 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 04:52:49,582 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:52:49,583 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:52:51,290 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:52:51,297 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:52:51,297 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:52:51,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:52:51 BoogieIcfgContainer [2022-01-10 04:52:51,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:52:51,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:52:51,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:52:51,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:52:51,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:52:48" (1/3) ... [2022-01-10 04:52:51,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2ba83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:52:51, skipping insertion in model container [2022-01-10 04:52:51,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:49" (2/3) ... [2022-01-10 04:52:51,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2ba83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:52:51, skipping insertion in model container [2022-01-10 04:52:51,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:52:51" (3/3) ... [2022-01-10 04:52:51,304 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label03.c [2022-01-10 04:52:51,307 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:52:51,307 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:52:51,337 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:52:51,344 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 04:52:51,344 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:52:51,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:52:51,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-10 04:52:51,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:52:51,364 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] [2022-01-10 04:52:51,365 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:52:51,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:52:51,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1318097310, now seen corresponding path program 1 times [2022-01-10 04:52:51,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:52:51,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213042801] [2022-01-10 04:52:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:52:51,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:52:51,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:52:51,382 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 04:52:51,383 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 04:52:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:52:51,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:52:51,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:52:51,531 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 04:52:51,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:52:51,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:52:51,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213042801] [2022-01-10 04:52:51,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213042801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:52:51,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:52:51,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:52:51,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618335902] [2022-01-10 04:52:51,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:52:51,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:52:51,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:52:51,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:52:51,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:52:51,563 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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 04:52:54,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:52:54,289 INFO L93 Difference]: Finished difference Result 552 states and 966 transitions. [2022-01-10 04:52:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:52:54,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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 36 [2022-01-10 04:52:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:52:54,301 INFO L225 Difference]: With dead ends: 552 [2022-01-10 04:52:54,301 INFO L226 Difference]: Without dead ends: 282 [2022-01-10 04:52:54,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 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 04:52:54,311 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 146 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:52:54,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 101 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 04:52:54,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-10 04:52:54,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-01-10 04:52:54,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.4483985765124556) internal successors, (407), 281 states have internal predecessors, (407), 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 04:52:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 407 transitions. [2022-01-10 04:52:54,348 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 407 transitions. Word has length 36 [2022-01-10 04:52:54,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:52:54,349 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 407 transitions. [2022-01-10 04:52:54,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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 04:52:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 407 transitions. [2022-01-10 04:52:54,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 04:52:54,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:52:54,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:54,358 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 04:52:54,558 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 04:52:54,558 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:52:54,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:52:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2130530743, now seen corresponding path program 1 times [2022-01-10 04:52:54,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:52:54,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315603670] [2022-01-10 04:52:54,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:52:54,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:52:54,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:52:54,565 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 04:52:54,567 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 04:52:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:52:54,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:52:54,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:52:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:52:54,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:52:54,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:52:54,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315603670] [2022-01-10 04:52:54,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315603670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:52:54,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:52:54,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:52:54,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151903239] [2022-01-10 04:52:54,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:52:54,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:52:54,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:52:54,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:52:54,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:52:54,822 INFO L87 Difference]: Start difference. First operand 282 states and 407 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 04:52:57,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:52:57,364 INFO L93 Difference]: Finished difference Result 840 states and 1216 transitions. [2022-01-10 04:52:57,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:52:57,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 104 [2022-01-10 04:52:57,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:52:57,367 INFO L225 Difference]: With dead ends: 840 [2022-01-10 04:52:57,367 INFO L226 Difference]: Without dead ends: 560 [2022-01-10 04:52:57,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 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 04:52:57,372 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 74 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:52:57,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 77 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 04:52:57,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-01-10 04:52:57,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2022-01-10 04:52:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.2790697674418605) internal successors, (715), 559 states have internal predecessors, (715), 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 04:52:57,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 715 transitions. [2022-01-10 04:52:57,389 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 715 transitions. Word has length 104 [2022-01-10 04:52:57,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:52:57,390 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 715 transitions. [2022-01-10 04:52:57,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 04:52:57,390 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 715 transitions. [2022-01-10 04:52:57,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 04:52:57,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:52:57,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:57,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 04:52:57,596 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 04:52:57,596 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:52:57,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:52:57,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2051277628, now seen corresponding path program 1 times [2022-01-10 04:52:57,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:52:57,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151026685] [2022-01-10 04:52:57,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:52:57,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:52:57,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:52:57,599 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 04:52:57,601 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 04:52:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:52:57,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:52:57,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:52:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:52:58,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:53:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:53:00,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:53:00,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151026685] [2022-01-10 04:53:00,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151026685] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:53:00,560 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:53:00,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 04:53:00,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785018066] [2022-01-10 04:53:00,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:53:00,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 04:53:00,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:53:00,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 04:53:00,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:53:00,562 INFO L87 Difference]: Start difference. First operand 560 states and 715 transitions. Second operand has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:03,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 04:53:41,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:53:41,178 INFO L93 Difference]: Finished difference Result 2407 states and 3161 transitions. [2022-01-10 04:53:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 04:53:41,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 6 states have internal predecessors, (206), 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 111 [2022-01-10 04:53:41,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:53:41,182 INFO L225 Difference]: With dead ends: 2407 [2022-01-10 04:53:41,182 INFO L226 Difference]: Without dead ends: 1394 [2022-01-10 04:53:41,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-10 04:53:41,184 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 909 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:53:41,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 54 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 40.2s Time] [2022-01-10 04:53:41,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2022-01-10 04:53:41,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 977. [2022-01-10 04:53:41,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.2377049180327868) internal successors, (1208), 976 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:41,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1208 transitions. [2022-01-10 04:53:41,206 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1208 transitions. Word has length 111 [2022-01-10 04:53:41,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:53:41,206 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1208 transitions. [2022-01-10 04:53:41,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:41,206 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1208 transitions. [2022-01-10 04:53:41,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 04:53:41,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:53:41,209 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:53:41,229 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 04:53:41,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:53:41,429 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:53:41,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:53:41,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1824336484, now seen corresponding path program 1 times [2022-01-10 04:53:41,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:53:41,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665792089] [2022-01-10 04:53:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:53:41,431 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:53:41,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:53:41,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:53:41,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 04:53:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:53:41,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:53:41,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:53:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:53:41,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:53:41,862 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:53:41,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665792089] [2022-01-10 04:53:41,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665792089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:53:41,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:53:41,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:53:41,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487956911] [2022-01-10 04:53:41,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:53:41,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:53:41,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:53:41,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:53:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:53:41,867 INFO L87 Difference]: Start difference. First operand 977 states and 1208 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:44,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:53:44,096 INFO L93 Difference]: Finished difference Result 2091 states and 2631 transitions. [2022-01-10 04:53:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:53:44,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 180 [2022-01-10 04:53:44,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:53:44,107 INFO L225 Difference]: With dead ends: 2091 [2022-01-10 04:53:44,107 INFO L226 Difference]: Without dead ends: 1255 [2022-01-10 04:53:44,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:53:44,108 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 66 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:53:44,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 212 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 04:53:44,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2022-01-10 04:53:44,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1116. [2022-01-10 04:53:44,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 1.2161434977578476) internal successors, (1356), 1115 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1356 transitions. [2022-01-10 04:53:44,128 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1356 transitions. Word has length 180 [2022-01-10 04:53:44,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:53:44,129 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1356 transitions. [2022-01-10 04:53:44,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:44,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1356 transitions. [2022-01-10 04:53:44,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-01-10 04:53:44,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:53:44,132 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:53:44,143 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 04:53:44,341 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 04:53:44,341 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:53:44,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:53:44,342 INFO L85 PathProgramCache]: Analyzing trace with hash -451991351, now seen corresponding path program 1 times [2022-01-10 04:53:44,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:53:44,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313390137] [2022-01-10 04:53:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:53:44,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:53:44,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:53:44,366 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 04:53:44,368 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 04:53:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:53:44,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:53:44,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:53:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-01-10 04:53:44,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:53:44,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:53:44,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313390137] [2022-01-10 04:53:44,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313390137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:53:44,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:53:44,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:53:44,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401901932] [2022-01-10 04:53:44,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:53:44,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:53:44,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:53:44,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:53:44,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:53:44,747 INFO L87 Difference]: Start difference. First operand 1116 states and 1356 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:47,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:53:47,093 INFO L93 Difference]: Finished difference Result 2369 states and 2936 transitions. [2022-01-10 04:53:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:53:47,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 215 [2022-01-10 04:53:47,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:53:47,097 INFO L225 Difference]: With dead ends: 2369 [2022-01-10 04:53:47,097 INFO L226 Difference]: Without dead ends: 1394 [2022-01-10 04:53:47,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:53:47,099 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 112 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:53:47,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 197 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 04:53:47,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2022-01-10 04:53:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1394. [2022-01-10 04:53:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 1.1981335247666907) internal successors, (1669), 1393 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:47,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1669 transitions. [2022-01-10 04:53:47,118 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1669 transitions. Word has length 215 [2022-01-10 04:53:47,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:53:47,119 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 1669 transitions. [2022-01-10 04:53:47,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:47,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1669 transitions. [2022-01-10 04:53:47,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-01-10 04:53:47,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:53:47,121 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:53:47,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 04:53:47,329 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 04:53:47,329 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:53:47,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:53:47,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1399677776, now seen corresponding path program 1 times [2022-01-10 04:53:47,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:53:47,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714300727] [2022-01-10 04:53:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:53:47,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:53:47,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:53:47,332 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 04:53:47,333 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 04:53:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:53:47,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:53:47,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:53:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:53:47,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:53:47,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:53:47,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714300727] [2022-01-10 04:53:47,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714300727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:53:47,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:53:47,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:53:47,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193203684] [2022-01-10 04:53:47,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:53:47,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:53:47,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:53:47,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:53:47,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:53:47,752 INFO L87 Difference]: Start difference. First operand 1394 states and 1669 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:53:49,805 INFO L93 Difference]: Finished difference Result 2647 states and 3193 transitions. [2022-01-10 04:53:49,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:53:49,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 225 [2022-01-10 04:53:49,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:53:49,811 INFO L225 Difference]: With dead ends: 2647 [2022-01-10 04:53:49,812 INFO L226 Difference]: Without dead ends: 1394 [2022-01-10 04:53:49,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:53:49,813 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 77 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:53:49,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 185 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 04:53:49,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2022-01-10 04:53:49,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1394. [2022-01-10 04:53:49,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 1.1464465183058148) internal successors, (1597), 1393 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:49,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1597 transitions. [2022-01-10 04:53:49,829 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1597 transitions. Word has length 225 [2022-01-10 04:53:49,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:53:49,829 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 1597 transitions. [2022-01-10 04:53:49,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:49,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1597 transitions. [2022-01-10 04:53:49,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-01-10 04:53:49,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:53:49,832 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 04:53:49,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 04:53:50,040 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 04:53:50,041 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:53:50,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:53:50,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1986888687, now seen corresponding path program 1 times [2022-01-10 04:53:50,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:53:50,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795763459] [2022-01-10 04:53:50,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:53:50,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:53:50,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:53:50,044 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 04:53:50,050 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 04:53:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:53:50,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 04:53:50,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:53:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 217 proven. 72 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 04:53:50,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:54:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 217 proven. 72 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 04:54:03,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:54:03,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795763459] [2022-01-10 04:54:03,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795763459] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:54:03,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:54:03,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-01-10 04:54:03,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402076051] [2022-01-10 04:54:03,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:54:03,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 04:54:03,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:54:03,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 04:54:03,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 04:54:03,919 INFO L87 Difference]: Start difference. First operand 1394 states and 1597 transitions. Second operand has 6 states, 6 states have (on average 75.0) internal successors, (450), 5 states have internal predecessors, (450), 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)