/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 22:39:18,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 22:39:18,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 22:39:18,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 22:39:18,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 22:39:18,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 22:39:18,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 22:39:18,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 22:39:18,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 22:39:18,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 22:39:18,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 22:39:18,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 22:39:18,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 22:39:18,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 22:39:18,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 22:39:18,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 22:39:18,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 22:39:18,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 22:39:18,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 22:39:18,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 22:39:18,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 22:39:18,539 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 22:39:18,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 22:39:18,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 22:39:18,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 22:39:18,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 22:39:18,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 22:39:18,541 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 22:39:18,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 22:39:18,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 22:39:18,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 22:39:18,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 22:39:18,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 22:39:18,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 22:39:18,542 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 22:39:18,542 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 22:39:18,542 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 22:39:18,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 22:39:18,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 22:39:18,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 22:39:18,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 22:39:18,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 22:39:18,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 22:39:18,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 22:39:18,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 22:39:18,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 22:39:18,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 22:39:18,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 22:39:18,544 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 22:39:18,544 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 22:39:18,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 22:39:18,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 22:39:18,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 22:39:18,545 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 22:39:18,545 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 22:39:18,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 22:39:18,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 22:39:18,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 22:39:18,751 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 22:39:18,759 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 22:39:18,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label21.c [2022-01-10 22:39:18,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2686d346a/1089c874bad34514829ba83bc327dec7/FLAGa1a33db61 [2022-01-10 22:39:19,403 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 22:39:19,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label21.c [2022-01-10 22:39:19,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2686d346a/1089c874bad34514829ba83bc327dec7/FLAGa1a33db61 [2022-01-10 22:39:19,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2686d346a/1089c874bad34514829ba83bc327dec7 [2022-01-10 22:39:19,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 22:39:19,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 22:39:19,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 22:39:19,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 22:39:19,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 22:39:19,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 10:39:19" (1/1) ... [2022-01-10 22:39:19,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3423436b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:39:19, skipping insertion in model container [2022-01-10 22:39:19,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 10:39:19" (1/1) ... [2022-01-10 22:39:19,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 22:39:19,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 22:39:20,143 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/Problem13_label21.c[3130,3143] [2022-01-10 22:39:20,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 22:39:20,831 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 22:39:20,850 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/Problem13_label21.c[3130,3143] [2022-01-10 22:39:21,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 22:39:21,257 INFO L208 MainTranslator]: Completed translation [2022-01-10 22:39:21,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:39:21 WrapperNode [2022-01-10 22:39:21,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 22:39:21,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 22:39:21,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 22:39:21,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 22:39:21,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:39:21" (1/1) ... [2022-01-10 22:39:21,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:39:21" (1/1) ... [2022-01-10 22:39:21,467 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5578 [2022-01-10 22:39:21,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 22:39:21,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 22:39:21,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 22:39:21,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 22:39:21,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:39:21" (1/1) ... [2022-01-10 22:39:21,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:39:21" (1/1) ... [2022-01-10 22:39:21,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:39:21" (1/1) ... [2022-01-10 22:39:21,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:39:21" (1/1) ... [2022-01-10 22:39:21,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:39:21" (1/1) ... [2022-01-10 22:39:21,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:39:21" (1/1) ... [2022-01-10 22:39:21,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:39:21" (1/1) ... [2022-01-10 22:39:21,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 22:39:21,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 22:39:21,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 22:39:21,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 22:39:21,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:39:21" (1/1) ... [2022-01-10 22:39:21,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 22:39:21,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 22:39:21,710 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 22:39:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 22:39:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 22:39:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 22:39:21,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 22:39:21,729 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 22:39:21,807 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 22:39:21,809 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 22:40:00,705 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 22:40:00,718 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 22:40:00,718 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 22:40:00,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 10:40:00 BoogieIcfgContainer [2022-01-10 22:40:00,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 22:40:00,724 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 22:40:00,725 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 22:40:00,725 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 22:40:00,727 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 10:40:00" (1/1) ... [2022-01-10 22:40:01,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 10:40:01 BasicIcfg [2022-01-10 22:40:01,915 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 22:40:01,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 22:40:01,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 22:40:01,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 22:40:01,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 10:39:19" (1/4) ... [2022-01-10 22:40:01,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722d628b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 10:40:01, skipping insertion in model container [2022-01-10 22:40:01,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:39:21" (2/4) ... [2022-01-10 22:40:01,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722d628b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 10:40:01, skipping insertion in model container [2022-01-10 22:40:01,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 10:40:00" (3/4) ... [2022-01-10 22:40:01,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722d628b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 10:40:01, skipping insertion in model container [2022-01-10 22:40:01,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 10:40:01" (4/4) ... [2022-01-10 22:40:01,921 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label21.cTransformedIcfg [2022-01-10 22:40:01,925 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 22:40:01,925 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 22:40:01,968 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 22:40:01,975 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 22:40:01,976 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 22:40:02,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 22:40:02,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 22:40:02,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 22:40:02,006 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] [2022-01-10 22:40:02,007 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 22:40:02,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 22:40:02,010 INFO L85 PathProgramCache]: Analyzing trace with hash -545780740, now seen corresponding path program 1 times [2022-01-10 22:40:02,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 22:40:02,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961448222] [2022-01-10 22:40:02,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 22:40:02,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 22:40:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 22:40:02,346 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 22:40:02,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 22:40:02,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961448222] [2022-01-10 22:40:02,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961448222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 22:40:02,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 22:40:02,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 22:40:02,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954897015] [2022-01-10 22:40:02,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 22:40:02,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 22:40:02,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 22:40:02,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 22:40:02,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 22:40:02,387 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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 22:40:04,705 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 22:40:06,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 22:40:09,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 22:40:11,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 22:40:13,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 22:40:15,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 22:40:17,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 22:40:19,978 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 22:40:22,148 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 22:40:24,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 22:40:26,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 22:40:28,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 22:40:30,831 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 22:40:32,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 22:40:35,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []