/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_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:01:23,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:01:23,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:01:23,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 05:01:23,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 05:01:23,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 05:01:23,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 05:01:23,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 05:01:23,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 05:01:23,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 05:01:23,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 05:01:23,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 05:01:23,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 05:01:23,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 05:01:23,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 05:01:23,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 05:01:23,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 05:01:23,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:01:23,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:01:23,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:01:23,218 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 05:01:23,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:01:23,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:01:23,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:01:23,238 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:01:23,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:01:23,242 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:01:23,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:01:23,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:01:23,243 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:01:23,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:01:23,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:01:23,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:01:23,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:01:23,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:01:23,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:01:23,244 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:01:23,244 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:01:23,244 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:01:23,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:01:23,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:01:23,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:01:23,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:01:23,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:01:23,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:01:23,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:01:23,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:01:23,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:01:23,246 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:01:23,246 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:01:23,246 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:01:23,246 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:01:23,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:01:23,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:01:23,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:01:23,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:01:23,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:01:23,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:01:23,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:01:23,441 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:01:23,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label39.c [2022-01-10 05:01:23,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58015f203/a2b16bb3b8d647efb66c5d47586e1caa/FLAG06b2eb667 [2022-01-10 05:01:23,912 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:01:23,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label39.c [2022-01-10 05:01:23,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58015f203/a2b16bb3b8d647efb66c5d47586e1caa/FLAG06b2eb667 [2022-01-10 05:01:24,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58015f203/a2b16bb3b8d647efb66c5d47586e1caa [2022-01-10 05:01:24,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:01:24,264 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:01:24,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:01:24,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:01:24,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:01:24,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:01:24" (1/1) ... [2022-01-10 05:01:24,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9dc3044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:24, skipping insertion in model container [2022-01-10 05:01:24,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:01:24" (1/1) ... [2022-01-10 05:01:24,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:01:24,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:01:24,522 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_label39.c[1593,1606] [2022-01-10 05:01:24,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:01:24,780 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:01:24,805 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_label39.c[1593,1606] [2022-01-10 05:01:24,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:01:24,934 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:01:24,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:24 WrapperNode [2022-01-10 05:01:24,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:01:24,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:01:24,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:01:24,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:01:24,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:24" (1/1) ... [2022-01-10 05:01:24,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:24" (1/1) ... [2022-01-10 05:01:25,040 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 997 [2022-01-10 05:01:25,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:01:25,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:01:25,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:01:25,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:01:25,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:24" (1/1) ... [2022-01-10 05:01:25,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:24" (1/1) ... [2022-01-10 05:01:25,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:24" (1/1) ... [2022-01-10 05:01:25,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:24" (1/1) ... [2022-01-10 05:01:25,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:24" (1/1) ... [2022-01-10 05:01:25,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:24" (1/1) ... [2022-01-10 05:01:25,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:24" (1/1) ... [2022-01-10 05:01:25,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:01:25,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:01:25,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:01:25,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:01:25,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:24" (1/1) ... [2022-01-10 05:01:25,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:01:25,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:01:25,148 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 05:01:25,154 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 05:01:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:01:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:01:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:01:25,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:01:25,228 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:01:25,229 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:01:31,588 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:01:31,595 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:01:31,595 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:01:31,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:01:31 BoogieIcfgContainer [2022-01-10 05:01:31,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:01:31,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:01:31,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:01:31,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:01:31,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:01:24" (1/3) ... [2022-01-10 05:01:31,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3c69cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:01:31, skipping insertion in model container [2022-01-10 05:01:31,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:01:24" (2/3) ... [2022-01-10 05:01:31,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3c69cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:01:31, skipping insertion in model container [2022-01-10 05:01:31,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:01:31" (3/3) ... [2022-01-10 05:01:31,606 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label39.c [2022-01-10 05:01:31,610 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:01:31,610 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:01:31,660 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:01:31,668 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 05:01:31,668 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:01:31,688 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 05:01:31,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 05:01:31,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:01:31,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:01:31,693 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:01:31,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:01:31,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1417350502, now seen corresponding path program 1 times [2022-01-10 05:01:31,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:01:31,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492333228] [2022-01-10 05:01:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:01:31,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:01:31,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:01:31,721 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 05:01:31,767 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 05:01:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:01:31,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:01:31,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:01:31,898 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 05:01:31,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:01:31,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:01:31,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492333228] [2022-01-10 05:01:31,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492333228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:01:31,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:01:31,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:01:31,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293139731] [2022-01-10 05:01:31,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:01:31,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:01:31,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:01:31,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:01:31,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:31,978 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 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 05:01:40,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:01:40,376 INFO L93 Difference]: Finished difference Result 764 states and 1354 transitions. [2022-01-10 05:01:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:01:40,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-01-10 05:01:40,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:01:40,394 INFO L225 Difference]: With dead ends: 764 [2022-01-10 05:01:40,394 INFO L226 Difference]: Without dead ends: 417 [2022-01-10 05:01:40,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 05:01:40,407 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 207 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 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, 8.3s IncrementalHoareTripleChecker+Time [2022-01-10 05:01:40,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 193 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-01-10 05:01:40,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-01-10 05:01:40,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 408. [2022-01-10 05:01:40,461 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 05:01:40,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 604 transitions. [2022-01-10 05:01:40,464 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 604 transitions. Word has length 10 [2022-01-10 05:01:40,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:01:40,464 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 604 transitions. [2022-01-10 05:01:40,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 05:01:40,464 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 604 transitions. [2022-01-10 05:01:40,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 05:01:40,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:01:40,467 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 05:01:40,479 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 05:01:40,674 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 05:01:40,675 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:01:40,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:01:40,675 INFO L85 PathProgramCache]: Analyzing trace with hash -667384489, now seen corresponding path program 1 times [2022-01-10 05:01:40,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:01:40,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451684723] [2022-01-10 05:01:40,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:01:40,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:01:40,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:01:40,678 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 05:01:40,684 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 05:01:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:01:40,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:01:40,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:01:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:01:41,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:01:41,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:01:41,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451684723] [2022-01-10 05:01:41,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451684723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:01:41,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:01:41,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:01:41,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293966524] [2022-01-10 05:01:41,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:01:41,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:01:41,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:01:41,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:01:41,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:41,251 INFO L87 Difference]: Start difference. First operand 408 states and 604 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 05:01:47,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:01:47,596 INFO L93 Difference]: Finished difference Result 1001 states and 1456 transitions. [2022-01-10 05:01:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:01:47,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 76 [2022-01-10 05:01:47,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:01:47,606 INFO L225 Difference]: With dead ends: 1001 [2022-01-10 05:01:47,606 INFO L226 Difference]: Without dead ends: 595 [2022-01-10 05:01:47,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 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 05:01:47,608 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 123 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s 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, 6.3s IncrementalHoareTripleChecker+Time [2022-01-10 05:01:47,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 175 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-01-10 05:01:47,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-01-10 05:01:47,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 592. [2022-01-10 05:01:47,651 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 05:01:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 806 transitions. [2022-01-10 05:01:47,653 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 806 transitions. Word has length 76 [2022-01-10 05:01:47,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:01:47,653 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 806 transitions. [2022-01-10 05:01:47,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 05:01:47,654 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 806 transitions. [2022-01-10 05:01:47,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 05:01:47,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:01:47,655 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 05:01:47,671 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 05:01:47,856 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 05:01:47,856 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:01:47,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:01:47,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1583632687, now seen corresponding path program 1 times [2022-01-10 05:01:47,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:01:47,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609958206] [2022-01-10 05:01:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:01:47,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:01:47,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:01:47,860 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 05:01:47,862 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 05:01:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:01:47,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:01:47,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:01:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:01:48,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:01:48,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:01:48,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609958206] [2022-01-10 05:01:48,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609958206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:01:48,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:01:48,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:01:48,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770278653] [2022-01-10 05:01:48,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:01:48,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:01:48,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:01:48,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:01:48,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:48,164 INFO L87 Difference]: Start difference. First operand 592 states and 806 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 05:01:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:01:55,144 INFO L93 Difference]: Finished difference Result 1556 states and 2168 transitions. [2022-01-10 05:01:55,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:01:55,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2022-01-10 05:01:55,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:01:55,154 INFO L225 Difference]: With dead ends: 1556 [2022-01-10 05:01:55,155 INFO L226 Difference]: Without dead ends: 966 [2022-01-10 05:01:55,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 79 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 05:01:55,157 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 148 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s 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, 6.9s IncrementalHoareTripleChecker+Time [2022-01-10 05:01:55,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 154 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-01-10 05:01:55,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-01-10 05:01:55,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2022-01-10 05:01:55,172 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 05:01:55,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1242 transitions. [2022-01-10 05:01:55,174 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1242 transitions. Word has length 81 [2022-01-10 05:01:55,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:01:55,174 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 1242 transitions. [2022-01-10 05:01:55,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 05:01:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1242 transitions. [2022-01-10 05:01:55,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 05:01:55,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:01:55,178 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:55,188 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 05:01:55,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:01:55,387 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:01:55,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:01:55,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2007410993, now seen corresponding path program 1 times [2022-01-10 05:01:55,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:01:55,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557600243] [2022-01-10 05:01:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:01:55,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:01:55,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:01:55,392 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 05:01:55,393 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 05:01:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:01:55,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:01:55,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:01:55,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:01:55,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:01:55,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:01:55,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557600243] [2022-01-10 05:01:55,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557600243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:01:55,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:01:55,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:01:55,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793687232] [2022-01-10 05:01:55,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:01:55,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:01:55,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:01:55,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:01:55,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:01:55,695 INFO L87 Difference]: Start difference. First operand 966 states and 1242 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 05:02:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:02:03,116 INFO L93 Difference]: Finished difference Result 2130 states and 2853 transitions. [2022-01-10 05:02:03,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:02:03,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 137 [2022-01-10 05:02:03,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:02:03,127 INFO L225 Difference]: With dead ends: 2130 [2022-01-10 05:02:03,127 INFO L226 Difference]: Without dead ends: 1350 [2022-01-10 05:02:03,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 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 05:02:03,129 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 195 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-01-10 05:02:03,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 337 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-01-10 05:02:03,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2022-01-10 05:02:03,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1342. [2022-01-10 05:02:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1341 states have (on average 1.2647278150633856) internal successors, (1696), 1341 states have internal predecessors, (1696), 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 05:02:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1696 transitions. [2022-01-10 05:02:03,150 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1696 transitions. Word has length 137 [2022-01-10 05:02:03,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:02:03,151 INFO L470 AbstractCegarLoop]: Abstraction has 1342 states and 1696 transitions. [2022-01-10 05:02:03,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 05:02:03,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1696 transitions. [2022-01-10 05:02:03,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-10 05:02:03,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:02:03,159 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 05:02:03,166 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 05:02:03,369 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 05:02:03,370 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:02:03,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:02:03,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1137585256, now seen corresponding path program 1 times [2022-01-10 05:02:03,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:02:03,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139017854] [2022-01-10 05:02:03,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:02:03,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:02:03,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:02:03,375 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 05:02:03,386 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 05:02:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:02:03,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 05:02:03,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:02:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:02:04,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:02:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:02:06,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:02:06,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139017854] [2022-01-10 05:02:06,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139017854] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 05:02:06,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 05:02:06,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 05:02:06,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300952563] [2022-01-10 05:02:06,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:02:06,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:02:06,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:02:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:02:06,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:02:06,964 INFO L87 Difference]: Start difference. First operand 1342 states and 1696 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 05:02:08,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:02:31,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:02:33,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:02:33,302 INFO L93 Difference]: Finished difference Result 2309 states and 3082 transitions. [2022-01-10 05:02:33,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:02:33,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 191 [2022-01-10 05:02:33,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:02:33,313 INFO L225 Difference]: With dead ends: 2309 [2022-01-10 05:02:33,313 INFO L226 Difference]: Without dead ends: 1711 [2022-01-10 05:02:33,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 377 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 05:02:33,314 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 152 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2022-01-10 05:02:33,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 38 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 26.3s Time] [2022-01-10 05:02:33,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2022-01-10 05:02:33,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1711. [2022-01-10 05:02:33,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1710 states have (on average 1.2923976608187135) internal successors, (2210), 1710 states have internal predecessors, (2210), 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 05:02:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2210 transitions. [2022-01-10 05:02:33,335 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2210 transitions. Word has length 191 [2022-01-10 05:02:33,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:02:33,336 INFO L470 AbstractCegarLoop]: Abstraction has 1711 states and 2210 transitions. [2022-01-10 05:02:33,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 05:02:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2210 transitions. [2022-01-10 05:02:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-10 05:02:33,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:02:33,337 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 05:02:33,364 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 05:02:33,548 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 05:02:33,548 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:02:33,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:02:33,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1259484336, now seen corresponding path program 1 times [2022-01-10 05:02:33,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:02:33,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931749507] [2022-01-10 05:02:33,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:02:33,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:02:33,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:02:33,569 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 05:02:33,571 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 05:02:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:02:33,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:02:33,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:02:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-01-10 05:02:33,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:02:33,966 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:02:33,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931749507] [2022-01-10 05:02:33,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931749507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:02:33,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:02:33,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:02:33,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109564597] [2022-01-10 05:02:33,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:02:33,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:02:33,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:02:33,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:02:33,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:02:33,968 INFO L87 Difference]: Start difference. First operand 1711 states and 2210 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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)