/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
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[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
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[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...
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[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
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[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
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[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...