/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/Problem19_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:42:33,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:42:33,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:42:33,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 05:42:33,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 05:42:33,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 05:42:33,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 05:42:33,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 05:42:33,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 05:42:33,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 05:42:33,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 05:42:33,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 05:42:33,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 05:42:33,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 05:42:33,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 05:42:33,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 05:42:33,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 05:42:33,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 05:42:33,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 05:42:33,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 05:42:33,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 05:42:33,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 05:42:33,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 05:42:33,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 05:42:33,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 05:42:33,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:42:33,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:42:33,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:42:33,846 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 05:42:33,860 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:42:33,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:42:33,860 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:42:33,860 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:42:33,861 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:42:33,861 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:42:33,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:42:33,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:42:33,862 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:42:33,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:42:33,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:42:33,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:42:33,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:42:33,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:42:33,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:42:33,862 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:42:33,863 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:42:33,863 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:42:33,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:42:33,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:42:33,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:42:33,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:42:33,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:42:33,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:42:33,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:42:33,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:42:33,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:42:33,864 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:42:33,864 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:42:33,864 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:42:33,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:42:33,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:42:33,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:42:33,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:42:34,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:42:34,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:42:34,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:42:34,061 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:42:34,064 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:42:34,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label04.c [2022-01-10 05:42:34,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50983006/a04614b10e4f4d578991d6062aaa1eba/FLAG2284066e7 [2022-01-10 05:42:34,704 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:42:34,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label04.c [2022-01-10 05:42:34,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50983006/a04614b10e4f4d578991d6062aaa1eba/FLAG2284066e7 [2022-01-10 05:42:34,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50983006/a04614b10e4f4d578991d6062aaa1eba [2022-01-10 05:42:34,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:42:34,856 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:42:34,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:42:34,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:42:34,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:42:34,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:42:34" (1/1) ... [2022-01-10 05:42:34,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a6e3000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:42:34, skipping insertion in model container [2022-01-10 05:42:34,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:42:34" (1/1) ... [2022-01-10 05:42:34,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:42:34,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:42:35,278 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/Problem19_label04.c[8051,8064] [2022-01-10 05:42:36,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:42:36,087 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:42:36,114 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/Problem19_label04.c[8051,8064] [2022-01-10 05:42:36,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:42:36,696 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:42:36,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:42:36 WrapperNode [2022-01-10 05:42:36,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:42:36,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:42:36,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:42:36,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:42:36,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:42:36" (1/1) ... [2022-01-10 05:42:36,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:42:36" (1/1) ... [2022-01-10 05:42:37,001 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9418 [2022-01-10 05:42:37,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:42:37,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:42:37,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:42:37,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:42:37,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:42:36" (1/1) ... [2022-01-10 05:42:37,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:42:36" (1/1) ... [2022-01-10 05:42:37,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:42:36" (1/1) ... [2022-01-10 05:42:37,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:42:36" (1/1) ... [2022-01-10 05:42:37,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:42:36" (1/1) ... [2022-01-10 05:42:37,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:42:36" (1/1) ... [2022-01-10 05:42:37,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:42:36" (1/1) ... [2022-01-10 05:42:37,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:42:37,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:42:37,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:42:37,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:42:37,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:42:36" (1/1) ... [2022-01-10 05:42:37,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:42:37,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:42:37,448 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 05:42:37,450 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 05:42:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:42:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:42:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:42:37,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:42:37,545 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:42:37,546 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:43:34,431 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:43:34,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:43:34,449 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:43:34,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:43:34 BoogieIcfgContainer [2022-01-10 05:43:34,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:43:34,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:43:34,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:43:34,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:43:34,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:42:34" (1/3) ... [2022-01-10 05:43:34,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1f5653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:43:34, skipping insertion in model container [2022-01-10 05:43:34,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:42:36" (2/3) ... [2022-01-10 05:43:34,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1f5653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:43:34, skipping insertion in model container [2022-01-10 05:43:34,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:43:34" (3/3) ... [2022-01-10 05:43:34,456 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label04.c [2022-01-10 05:43:34,460 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:43:34,460 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:43:34,496 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:43:34,500 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 05:43:34,500 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:43:34,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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 05:43:34,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 05:43:34,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:43:34,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:43:34,538 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:43:34,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:43:34,545 INFO L85 PathProgramCache]: Analyzing trace with hash 531730986, now seen corresponding path program 1 times [2022-01-10 05:43:34,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:43:34,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812571909] [2022-01-10 05:43:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:43:34,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:43:34,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:43:34,558 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 05:43:34,561 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 05:43:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:43:34,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:43:34,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:43:34,950 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 05:43:34,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:43:34,951 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:43:34,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812571909] [2022-01-10 05:43:34,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812571909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:43:34,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:43:34,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:43:34,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793753080] [2022-01-10 05:43:34,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:43:34,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:43:34,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:43:34,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:43:34,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:43:35,002 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 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)