/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/Problem16_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:30:50,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:30:50,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:30:50,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 05:30:50,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 05:30:50,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 05:30:50,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 05:30:50,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 05:30:50,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 05:30:50,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 05:30:50,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 05:30:50,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 05:30:50,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 05:30:50,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 05:30:50,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 05:30:50,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 05:30:50,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 05:30:50,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:30:50,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:30:50,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:30:50,428 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 05:30:50,442 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:30:50,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:30:50,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:30:50,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:30:50,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:30:50,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:30:50,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:30:50,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:30:50,447 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:30:50,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:30:50,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:30:50,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:30:50,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:30:50,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:30:50,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:30:50,448 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:30:50,448 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:30:50,449 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:30:50,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:30:50,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:30:50,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:30:50,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:30:50,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:30:50,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:30:50,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:30:50,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:30:50,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:30:50,450 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:30:50,451 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:30:50,451 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:30:50,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:30:50,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:30:50,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:30:50,451 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:30:50,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:30:50,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:30:50,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:30:50,632 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:30:50,634 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:30:50,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label57.c [2022-01-10 05:30:50,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9da46af80/bc63118afb124ca6acc76d9418ca029f/FLAGf9ee2c5aa [2022-01-10 05:30:51,153 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:30:51,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label57.c [2022-01-10 05:30:51,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9da46af80/bc63118afb124ca6acc76d9418ca029f/FLAGf9ee2c5aa [2022-01-10 05:30:51,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9da46af80/bc63118afb124ca6acc76d9418ca029f [2022-01-10 05:30:51,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:30:51,190 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:30:51,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:30:51,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:30:51,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:30:51,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:30:51" (1/1) ... [2022-01-10 05:30:51,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ff5fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:51, skipping insertion in model container [2022-01-10 05:30:51,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:30:51" (1/1) ... [2022-01-10 05:30:51,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:30:51,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:30:51,443 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/Problem16_label57.c[4337,4350] [2022-01-10 05:30:51,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:30:51,761 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:30:51,781 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/Problem16_label57.c[4337,4350] [2022-01-10 05:30:51,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:30:51,905 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:30:51,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:51 WrapperNode [2022-01-10 05:30:51,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:30:51,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:30:51,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:30:51,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:30:51,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:51" (1/1) ... [2022-01-10 05:30:51,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:51" (1/1) ... [2022-01-10 05:30:52,004 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1765 [2022-01-10 05:30:52,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:30:52,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:30:52,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:30:52,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:30:52,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:51" (1/1) ... [2022-01-10 05:30:52,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:51" (1/1) ... [2022-01-10 05:30:52,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:51" (1/1) ... [2022-01-10 05:30:52,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:51" (1/1) ... [2022-01-10 05:30:52,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:51" (1/1) ... [2022-01-10 05:30:52,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:51" (1/1) ... [2022-01-10 05:30:52,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:51" (1/1) ... [2022-01-10 05:30:52,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:30:52,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:30:52,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:30:52,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:30:52,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:51" (1/1) ... [2022-01-10 05:30:52,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:30:52,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:30:52,120 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 05:30:52,122 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 05:30:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:30:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:30:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:30:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:30:52,197 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:30:52,198 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:30:57,537 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:30:57,547 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:30:57,547 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:30:57,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:30:57 BoogieIcfgContainer [2022-01-10 05:30:57,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:30:57,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:30:57,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:30:57,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:30:57,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:30:51" (1/3) ... [2022-01-10 05:30:57,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534979c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:30:57, skipping insertion in model container [2022-01-10 05:30:57,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:51" (2/3) ... [2022-01-10 05:30:57,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534979c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:30:57, skipping insertion in model container [2022-01-10 05:30:57,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:30:57" (3/3) ... [2022-01-10 05:30:57,557 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label57.c [2022-01-10 05:30:57,565 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:30:57,565 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:30:57,610 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:30:57,618 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 05:30:57,619 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:30:57,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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 05:30:57,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 05:30:57,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:30:57,639 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] [2022-01-10 05:30:57,639 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:30:57,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:30:57,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2102454322, now seen corresponding path program 1 times [2022-01-10 05:30:57,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:30:57,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848954934] [2022-01-10 05:30:57,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:30:57,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:30:57,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:30:57,656 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 05:30:57,661 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 05:30:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:30:57,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:30:57,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:30:57,915 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 05:30:57,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:30:57,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:30:57,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848954934] [2022-01-10 05:30:57,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848954934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:30:57,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:30:57,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:30:57,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837560664] [2022-01-10 05:30:57,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:30:57,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:30:57,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:30:57,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:30:57,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:30:57,939 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 05:31:05,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:31:05,511 INFO L93 Difference]: Finished difference Result 1122 states and 2103 transitions. [2022-01-10 05:31:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:31:05,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 40 [2022-01-10 05:31:05,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:31:05,524 INFO L225 Difference]: With dead ends: 1122 [2022-01-10 05:31:05,525 INFO L226 Difference]: Without dead ends: 662 [2022-01-10 05:31:05,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 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 05:31:05,529 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 305 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-01-10 05:31:05,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 290 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-01-10 05:31:05,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-01-10 05:31:05,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2022-01-10 05:31:05,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.4826021180030258) internal successors, (980), 661 states have internal predecessors, (980), 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 05:31:05,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 980 transitions. [2022-01-10 05:31:05,581 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 980 transitions. Word has length 40 [2022-01-10 05:31:05,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:31:05,581 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 980 transitions. [2022-01-10 05:31:05,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 05:31:05,581 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 980 transitions. [2022-01-10 05:31:05,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 05:31:05,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:31:05,584 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:31:05,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 05:31:05,790 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 05:31:05,790 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:31:05,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:31:05,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1601741054, now seen corresponding path program 1 times [2022-01-10 05:31:05,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:31:05,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550620703] [2022-01-10 05:31:05,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:31:05,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:31:05,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:31:05,794 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 05:31:05,796 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 05:31:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:31:05,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:31:05,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:31:06,082 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:31:06,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:31:06,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:31:06,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550620703] [2022-01-10 05:31:06,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550620703] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:31:06,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:31:06,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:31:06,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616653199] [2022-01-10 05:31:06,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:31:06,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:31:06,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:31:06,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:31:06,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:31:06,089 INFO L87 Difference]: Start difference. First operand 662 states and 980 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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 05:31:11,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:31:11,258 INFO L93 Difference]: Finished difference Result 1651 states and 2341 transitions. [2022-01-10 05:31:11,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:31:11,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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 112 [2022-01-10 05:31:11,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:31:11,262 INFO L225 Difference]: With dead ends: 1651 [2022-01-10 05:31:11,262 INFO L226 Difference]: Without dead ends: 991 [2022-01-10 05:31:11,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 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 05:31:11,264 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 260 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-01-10 05:31:11,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 249 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-01-10 05:31:11,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-01-10 05:31:11,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2022-01-10 05:31:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.3525252525252525) internal successors, (1339), 990 states have internal predecessors, (1339), 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 05:31:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1339 transitions. [2022-01-10 05:31:11,305 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1339 transitions. Word has length 112 [2022-01-10 05:31:11,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:31:11,305 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 1339 transitions. [2022-01-10 05:31:11,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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 05:31:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1339 transitions. [2022-01-10 05:31:11,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 05:31:11,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:31:11,307 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 05:31:11,316 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 05:31:11,514 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 05:31:11,514 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:31:11,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:31:11,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1940101471, now seen corresponding path program 1 times [2022-01-10 05:31:11,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:31:11,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625758769] [2022-01-10 05:31:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:31:11,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:31:11,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:31:11,517 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 05:31:11,519 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 05:31:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:31:11,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:31:11,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:31:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:31:11,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:31:11,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:31:11,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625758769] [2022-01-10 05:31:11,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625758769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:31:11,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:31:11,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:31:11,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881997777] [2022-01-10 05:31:11,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:31:11,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:31:11,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:31:11,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:31:11,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:31:11,789 INFO L87 Difference]: Start difference. First operand 991 states and 1339 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 05:31:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:31:18,709 INFO L93 Difference]: Finished difference Result 1980 states and 2911 transitions. [2022-01-10 05:31:18,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:31:18,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2022-01-10 05:31:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:31:18,738 INFO L225 Difference]: With dead ends: 1980 [2022-01-10 05:31:18,738 INFO L226 Difference]: Without dead ends: 1320 [2022-01-10 05:31:18,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 05:31:18,742 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 344 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-01-10 05:31:18,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 539 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-01-10 05:31:18,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-01-10 05:31:18,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2022-01-10 05:31:18,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.3146322971948445) internal successors, (1734), 1319 states have internal predecessors, (1734), 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 05:31:18,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1734 transitions. [2022-01-10 05:31:18,763 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1734 transitions. Word has length 127 [2022-01-10 05:31:18,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:31:18,764 INFO L470 AbstractCegarLoop]: Abstraction has 1320 states and 1734 transitions. [2022-01-10 05:31:18,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 05:31:18,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1734 transitions. [2022-01-10 05:31:18,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 05:31:18,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:31:18,772 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:31:18,779 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 05:31:18,979 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 05:31:18,979 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:31:18,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:31:18,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1389313218, now seen corresponding path program 1 times [2022-01-10 05:31:18,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:31:18,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995026649] [2022-01-10 05:31:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:31:18,982 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:31:18,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:31:18,983 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 05:31:18,986 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 05:31:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:31:19,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:31:19,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:31:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:31:19,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:31:19,354 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:31:19,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995026649] [2022-01-10 05:31:19,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995026649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:31:19,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:31:19,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:31:19,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511389404] [2022-01-10 05:31:19,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:31:19,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:31:19,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:31:19,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:31:19,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:31:19,356 INFO L87 Difference]: Start difference. First operand 1320 states and 1734 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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 05:31:27,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:31:27,179 INFO L93 Difference]: Finished difference Result 3625 states and 4838 transitions. [2022-01-10 05:31:27,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:31:27,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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 165 [2022-01-10 05:31:27,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:31:27,190 INFO L225 Difference]: With dead ends: 3625 [2022-01-10 05:31:27,190 INFO L226 Difference]: Without dead ends: 2636 [2022-01-10 05:31:27,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 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 05:31:27,193 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 225 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-01-10 05:31:27,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 241 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-01-10 05:31:27,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2022-01-10 05:31:27,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2636. [2022-01-10 05:31:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 1.2030360531309299) internal successors, (3170), 2635 states have internal predecessors, (3170), 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 05:31:27,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3170 transitions. [2022-01-10 05:31:27,250 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3170 transitions. Word has length 165 [2022-01-10 05:31:27,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:31:27,251 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3170 transitions. [2022-01-10 05:31:27,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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 05:31:27,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3170 transitions. [2022-01-10 05:31:27,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-01-10 05:31:27,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:31:27,255 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:31:27,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 05:31:27,467 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 05:31:27,467 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:31:27,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:31:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash -428945185, now seen corresponding path program 1 times [2022-01-10 05:31:27,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:31:27,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711441614] [2022-01-10 05:31:27,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:31:27,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:31:27,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:31:27,470 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 05:31:27,470 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 05:31:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:31:27,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 05:31:27,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:31:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 240 proven. 56 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-10 05:31:28,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:31:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 240 proven. 56 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-10 05:31:31,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:31:31,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711441614] [2022-01-10 05:31:31,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711441614] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:31:31,847 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:31:31,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-01-10 05:31:31,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379060894] [2022-01-10 05:31:31,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:31:31,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 05:31:31,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:31:31,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 05:31:31,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 05:31:31,849 INFO L87 Difference]: Start difference. First operand 2636 states and 3170 transitions. Second operand has 6 states, 6 states have (on average 64.5) internal successors, (387), 5 states have internal predecessors, (387), 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 05:31:42,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:31:44,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:31:46,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:31:49,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:31:57,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:32:04,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []