/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/Problem18_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:37:31,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:37:31,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:37:31,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 05:37:31,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 05:37:31,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 05:37:31,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 05:37:31,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 05:37:31,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 05:37:31,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 05:37:31,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 05:37:31,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 05:37:31,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 05:37:31,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 05:37:31,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 05:37:31,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 05:37:31,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 05:37:31,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 05:37:31,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 05:37:31,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 05:37:31,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 05:37:31,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 05:37:31,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 05:37:31,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 05:37:31,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 05:37:31,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 05:37:31,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 05:37:31,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 05:37:31,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 05:37:31,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 05:37:31,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 05:37:31,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 05:37:31,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 05:37:31,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 05:37:31,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 05:37:31,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 05:37:31,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 05:37:31,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 05:37:31,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:37:31,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:37:31,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:37:31,308 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 05:37:31,336 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:37:31,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:37:31,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:37:31,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:37:31,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:37:31,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:37:31,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:37:31,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:37:31,337 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:37:31,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:37:31,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:37:31,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:37:31,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:37:31,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:37:31,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:37:31,338 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:37:31,338 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:37:31,338 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:37:31,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:37:31,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:37:31,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:37:31,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:37:31,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:37:31,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:37:31,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:37:31,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:37:31,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:37:31,339 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:37:31,339 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:37:31,339 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:37:31,339 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:37:31,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:37:31,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:37:31,340 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:37:31,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:37:31,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:37:31,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:37:31,538 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:37:31,539 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:37:31,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label08.c [2022-01-10 05:37:31,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bd7def36/261b43325b754e24868b4b0c72bf33fb/FLAGd9d5a8c8c [2022-01-10 05:37:32,129 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:37:32,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label08.c [2022-01-10 05:37:32,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bd7def36/261b43325b754e24868b4b0c72bf33fb/FLAGd9d5a8c8c [2022-01-10 05:37:32,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bd7def36/261b43325b754e24868b4b0c72bf33fb [2022-01-10 05:37:32,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:37:32,390 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:37:32,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:37:32,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:37:32,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:37:32,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:37:32" (1/1) ... [2022-01-10 05:37:32,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286dfeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:37:32, skipping insertion in model container [2022-01-10 05:37:32,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:37:32" (1/1) ... [2022-01-10 05:37:32,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:37:32,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:37:32,648 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/Problem18_label08.c[2490,2503] [2022-01-10 05:37:33,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:37:33,173 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:37:33,191 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/Problem18_label08.c[2490,2503] [2022-01-10 05:37:33,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:37:33,556 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:37:33,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:37:33 WrapperNode [2022-01-10 05:37:33,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:37:33,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:37:33,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:37:33,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:37:33,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:37:33" (1/1) ... [2022-01-10 05:37:33,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:37:33" (1/1) ... [2022-01-10 05:37:33,682 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4128 [2022-01-10 05:37:33,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:37:33,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:37:33,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:37:33,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:37:33,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:37:33" (1/1) ... [2022-01-10 05:37:33,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:37:33" (1/1) ... [2022-01-10 05:37:33,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:37:33" (1/1) ... [2022-01-10 05:37:33,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:37:33" (1/1) ... [2022-01-10 05:37:33,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:37:33" (1/1) ... [2022-01-10 05:37:33,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:37:33" (1/1) ... [2022-01-10 05:37:33,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:37:33" (1/1) ... [2022-01-10 05:37:33,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:37:33,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:37:33,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:37:33,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:37:33,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:37:33" (1/1) ... [2022-01-10 05:37:33,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:37:33,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:37:33,816 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 05:37:33,838 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 05:37:33,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:37:33,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:37:33,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:37:33,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:37:33,906 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:37:33,907 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:37:45,153 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:37:45,172 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:37:45,173 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:37:45,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:37:45 BoogieIcfgContainer [2022-01-10 05:37:45,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:37:45,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:37:45,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:37:45,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:37:45,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:37:32" (1/3) ... [2022-01-10 05:37:45,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4399b489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:37:45, skipping insertion in model container [2022-01-10 05:37:45,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:37:33" (2/3) ... [2022-01-10 05:37:45,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4399b489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:37:45, skipping insertion in model container [2022-01-10 05:37:45,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:37:45" (3/3) ... [2022-01-10 05:37:45,181 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label08.c [2022-01-10 05:37:45,186 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:37:45,186 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:37:45,231 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:37:45,244 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 05:37:45,245 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:37:45,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 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 05:37:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 05:37:45,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:37:45,275 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] [2022-01-10 05:37:45,276 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:37:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:37:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash -85512855, now seen corresponding path program 1 times [2022-01-10 05:37:45,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:37:45,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048957968] [2022-01-10 05:37:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:37:45,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:37:45,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:37:45,292 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 05:37:45,309 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 05:37:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:37:45,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:37:45,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:37:45,483 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 05:37:45,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:37:45,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:37:45,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048957968] [2022-01-10 05:37:45,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048957968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:37:45,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:37:45,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:37:45,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870678476] [2022-01-10 05:37:45,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:37:45,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:37:45,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:37:45,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:37:45,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:37:45,513 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 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 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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 05:38:01,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:38:01,099 INFO L93 Difference]: Finished difference Result 2205 states and 4266 transitions. [2022-01-10 05:38:01,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:38:01,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2022-01-10 05:38:01,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:38:01,118 INFO L225 Difference]: With dead ends: 2205 [2022-01-10 05:38:01,119 INFO L226 Difference]: Without dead ends: 1384 [2022-01-10 05:38:01,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 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 05:38:01,127 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 691 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-01-10 05:38:01,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 432 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2022-01-10 05:38:01,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-01-10 05:38:01,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-01-10 05:38:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.6428054953000724) internal successors, (2272), 1383 states have internal predecessors, (2272), 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 05:38:01,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2272 transitions. [2022-01-10 05:38:01,194 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2272 transitions. Word has length 21 [2022-01-10 05:38:01,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:38:01,194 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 2272 transitions. [2022-01-10 05:38:01,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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 05:38:01,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2272 transitions. [2022-01-10 05:38:01,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 05:38:01,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:38:01,196 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:38:01,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 05:38:01,402 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 05:38:01,404 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:38:01,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:38:01,405 INFO L85 PathProgramCache]: Analyzing trace with hash -46153574, now seen corresponding path program 1 times [2022-01-10 05:38:01,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:38:01,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924827759] [2022-01-10 05:38:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:38:01,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:38:01,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:38:01,408 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 05:38:01,410 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 05:38:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:38:01,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:38:01,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:38:01,706 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:38:01,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:38:01,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:38:01,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924827759] [2022-01-10 05:38:01,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924827759] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:38:01,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:38:01,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:38:01,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732812794] [2022-01-10 05:38:01,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:38:01,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:38:01,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:38:01,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:38:01,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:38:01,713 INFO L87 Difference]: Start difference. First operand 1384 states and 2272 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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 05:38:17,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:38:17,626 INFO L93 Difference]: Finished difference Result 4146 states and 6811 transitions. [2022-01-10 05:38:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:38:17,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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 86 [2022-01-10 05:38:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:38:17,636 INFO L225 Difference]: With dead ends: 4146 [2022-01-10 05:38:17,636 INFO L226 Difference]: Without dead ends: 2764 [2022-01-10 05:38:17,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 84 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 05:38:17,639 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 667 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-01-10 05:38:17,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 591 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time] [2022-01-10 05:38:17,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2022-01-10 05:38:17,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2022-01-10 05:38:17,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.3785740137531668) internal successors, (3809), 2763 states have internal predecessors, (3809), 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 05:38:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3809 transitions. [2022-01-10 05:38:17,715 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3809 transitions. Word has length 86 [2022-01-10 05:38:17,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:38:17,717 INFO L470 AbstractCegarLoop]: Abstraction has 2764 states and 3809 transitions. [2022-01-10 05:38:17,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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 05:38:17,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3809 transitions. [2022-01-10 05:38:17,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 05:38:17,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:38:17,719 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:38:17,728 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 05:38:17,920 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 05:38:17,921 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:38:17,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:38:17,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2097732, now seen corresponding path program 1 times [2022-01-10 05:38:17,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:38:17,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764151421] [2022-01-10 05:38:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:38:17,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:38:17,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:38:17,924 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 05:38:17,925 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 05:38:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:38:18,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:38:18,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:38:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:38:18,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:38:18,154 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:38:18,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764151421] [2022-01-10 05:38:18,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764151421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:38:18,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:38:18,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:38:18,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373849542] [2022-01-10 05:38:18,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:38:18,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:38:18,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:38:18,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:38:18,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:38:18,156 INFO L87 Difference]: Start difference. First operand 2764 states and 3809 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 05:38:35,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:38:35,977 INFO L93 Difference]: Finished difference Result 8286 states and 11422 transitions. [2022-01-10 05:38:35,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:38:35,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 89 [2022-01-10 05:38:35,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:38:36,007 INFO L225 Difference]: With dead ends: 8286 [2022-01-10 05:38:36,007 INFO L226 Difference]: Without dead ends: 5524 [2022-01-10 05:38:36,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 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 05:38:36,015 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 627 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-01-10 05:38:36,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 611 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 17.7s Time] [2022-01-10 05:38:36,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2022-01-10 05:38:36,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 5524. [2022-01-10 05:38:36,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5524 states, 5523 states have (on average 1.2513126923773312) internal successors, (6911), 5523 states have internal predecessors, (6911), 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 05:38:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5524 states to 5524 states and 6911 transitions. [2022-01-10 05:38:36,107 INFO L78 Accepts]: Start accepts. Automaton has 5524 states and 6911 transitions. Word has length 89 [2022-01-10 05:38:36,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:38:36,108 INFO L470 AbstractCegarLoop]: Abstraction has 5524 states and 6911 transitions. [2022-01-10 05:38:36,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 05:38:36,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5524 states and 6911 transitions. [2022-01-10 05:38:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 05:38:36,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:38:36,113 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:38:36,130 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 05:38:36,320 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 05:38:36,320 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:38:36,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:38:36,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2063199729, now seen corresponding path program 1 times [2022-01-10 05:38:36,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:38:36,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405053271] [2022-01-10 05:38:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:38:36,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:38:36,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:38:36,324 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 05:38:36,325 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 05:38:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:38:36,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:38:36,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:38:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:38:36,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:38:36,638 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:38:36,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405053271] [2022-01-10 05:38:36,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405053271] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:38:36,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:38:36,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:38:36,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363362367] [2022-01-10 05:38:36,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:38:36,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:38:36,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:38:36,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:38:36,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:38:36,641 INFO L87 Difference]: Start difference. First operand 5524 states and 6911 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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 05:38:48,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:38:48,127 INFO L93 Difference]: Finished difference Result 13116 states and 16083 transitions. [2022-01-10 05:38:48,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:38:48,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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 107 [2022-01-10 05:38:48,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:38:48,147 INFO L225 Difference]: With dead ends: 13116 [2022-01-10 05:38:48,147 INFO L226 Difference]: Without dead ends: 7594 [2022-01-10 05:38:48,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 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 05:38:48,152 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 623 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-01-10 05:38:48,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 629 Invalid, 2110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2022-01-10 05:38:48,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7594 states. [2022-01-10 05:38:48,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7594 to 7594. [2022-01-10 05:38:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7594 states, 7593 states have (on average 1.1907019623337285) internal successors, (9041), 7593 states have internal predecessors, (9041), 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 05:38:48,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 9041 transitions. [2022-01-10 05:38:48,245 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 9041 transitions. Word has length 107 [2022-01-10 05:38:48,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:38:48,246 INFO L470 AbstractCegarLoop]: Abstraction has 7594 states and 9041 transitions. [2022-01-10 05:38:48,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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 05:38:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 9041 transitions. [2022-01-10 05:38:48,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 05:38:48,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:38:48,248 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:38:48,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 05:38:48,455 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 05:38:48,456 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:38:48,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:38:48,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1342768800, now seen corresponding path program 1 times [2022-01-10 05:38:48,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:38:48,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231778360] [2022-01-10 05:38:48,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:38:48,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:38:48,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:38:48,469 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 05:38:48,470 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 05:38:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:38:48,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:38:48,530 INFO L286 TraceCheckSpWp]: Computing forward predicates...