/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label33.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.0-0f64333
[2020-10-29 05:26:47,850 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-29 05:26:47,854 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-29 05:26:47,904 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-29 05:26:47,904 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-29 05:26:47,906 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-29 05:26:47,908 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-29 05:26:47,911 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-29 05:26:47,913 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-29 05:26:47,915 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-10-29 05:26:47,919 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-29 05:26:47,920 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-29 05:26:47,922 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-29 05:26:47,923 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-29 05:26:47,925 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-29 05:26:47,926 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-29 05:26:47,928 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-29 05:26:47,931 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-29 05:26:47,933 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-29 05:26:47,935 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-29 05:26:47,937 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-29 05:26:47,938 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-29 05:26:47,957 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-29 05:26:47,957 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-29 05:26:47,958 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-29 05:26:47,959 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-29 05:26:47,960 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-29 05:26:47,961 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-29 05:26:47,961 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-10-29 05:26:47,964 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-29 05:26:47,965 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-29 05:26:47,967 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-29 05:26:47,967 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-29 05:26:47,968 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2020-10-29 05:26:47,969 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-10-29 05:26:47,971 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-29 05:26:47,972 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-29 05:26:48,000 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-29 05:26:48,001 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-29 05:26:48,002 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-29 05:26:48,003 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-29 05:26:48,003 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-29 05:26:48,003 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-29 05:26:48,004 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-29 05:26:48,004 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-29 05:26:48,004 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-29 05:26:48,005 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-29 05:26:48,005 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-29 05:26:48,005 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-29 05:26:48,006 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-29 05:26:48,006 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-29 05:26:48,006 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-29 05:26:48,006 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-29 05:26:48,007 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-29 05:26:48,007 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-29 05:26:48,007 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-29 05:26:48,008 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-29 05:26:48,008 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-29 05:26:48,008 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-29 05:26:48,009 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-29 05:26:48,009 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-29 05:26:48,009 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-29 05:26:48,010 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-29 05:26:48,010 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-29 05:26:48,010 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-29 05:26:48,011 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-29 05:26:48,011 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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-2/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true;
[2020-10-29 05:26:48,429 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-29 05:26:48,457 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-29 05:26:48,460 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-29 05:26:48,462 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-29 05:26:48,463 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-29 05:26:48,464 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label33.c
[2020-10-29 05:26:48,550 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/863918975/653b78cc780046918a6de8eb7d68e75c/FLAG5fa532f20
[2020-10-29 05:26:49,831 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-29 05:26:49,832 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label33.c
[2020-10-29 05:26:49,895 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/863918975/653b78cc780046918a6de8eb7d68e75c/FLAG5fa532f20
[2020-10-29 05:26:50,084 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/863918975/653b78cc780046918a6de8eb7d68e75c
[2020-10-29 05:26:50,088 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-29 05:26:50,095 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-29 05:26:50,098 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-29 05:26:50,099 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-29 05:26:50,103 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-29 05:26:50,104 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:26:50" (1/1) ...
[2020-10-29 05:26:50,108 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@799b3595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:50, skipping insertion in model container
[2020-10-29 05:26:50,109 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:26:50" (1/1) ...
[2020-10-29 05:26:50,118 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-29 05:26:50,376 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-29 05:26:52,682 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 05:26:52,699 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-29 05:26:53,880 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 05:26:53,957 INFO  L208         MainTranslator]: Completed translation
[2020-10-29 05:26:53,957 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:53 WrapperNode
[2020-10-29 05:26:53,958 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-29 05:26:53,959 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-29 05:26:53,959 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-29 05:26:53,959 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-29 05:26:53,975 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:53" (1/1) ...
[2020-10-29 05:26:53,977 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:53" (1/1) ...
[2020-10-29 05:26:54,168 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:53" (1/1) ...
[2020-10-29 05:26:54,168 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:53" (1/1) ...
[2020-10-29 05:26:54,429 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:53" (1/1) ...
[2020-10-29 05:26:54,490 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:53" (1/1) ...
[2020-10-29 05:26:54,547 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:53" (1/1) ...
[2020-10-29 05:26:54,628 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-29 05:26:54,629 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-29 05:26:54,630 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-29 05:26:54,630 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-29 05:26:54,631 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:53" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-29 05:26:54,716 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-29 05:26:54,717 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-29 05:26:54,717 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-29 05:26:54,717 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-29 05:26:54,718 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-29 05:26:54,718 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-29 05:26:54,718 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-29 05:26:54,718 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-29 05:26:54,718 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-29 05:26:54,718 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-29 05:26:54,719 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-29 05:26:54,719 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-29 05:26:54,720 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-29 05:26:54,720 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-29 05:26:54,720 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-29 05:26:54,721 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-29 05:26:54,721 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-29 05:26:54,721 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-29 05:26:54,721 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-29 05:26:54,722 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-29 05:26:54,723 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-29 05:26:54,723 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-29 05:26:54,723 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-29 05:26:54,723 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-29 05:26:54,724 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-29 05:26:54,724 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-29 05:26:54,724 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-29 05:26:54,724 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-29 05:26:54,724 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-29 05:26:54,725 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-29 05:26:54,725 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-29 05:26:54,725 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-29 05:26:54,725 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-29 05:27:04,794 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-29 05:27:04,795 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-29 05:27:04,801 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:27:04 BoogieIcfgContainer
[2020-10-29 05:27:04,801 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-29 05:27:04,806 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-29 05:27:04,807 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-29 05:27:04,810 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-29 05:27:04,811 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:26:50" (1/3) ...
[2020-10-29 05:27:04,812 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb47ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:27:04, skipping insertion in model container
[2020-10-29 05:27:04,812 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:53" (2/3) ...
[2020-10-29 05:27:04,813 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb47ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:27:04, skipping insertion in model container
[2020-10-29 05:27:04,813 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:27:04" (3/3) ...
[2020-10-29 05:27:04,815 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label33.c
[2020-10-29 05:27:04,827 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-29 05:27:04,839 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-29 05:27:04,852 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-29 05:27:04,902 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-29 05:27:04,902 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-29 05:27:04,902 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-29 05:27:04,902 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-29 05:27:04,902 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-29 05:27:04,903 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-29 05:27:04,903 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-29 05:27:04,903 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-29 05:27:05,055 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-29 05:27:05,194 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1662
[2020-10-29 05:27:05,195 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:27:05,198 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 05:27:05,198 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:27:05,209 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:27:05,211 INFO  L82        PathProgramCache]: Analyzing trace with hash 1880576681, now seen corresponding path program 1 times
[2020-10-29 05:27:05,221 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:27:05,221 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014539370]
[2020-10-29 05:27:05,222 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:27:06,179 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:27:06,650 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:27:11,399 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:27:11,400 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1685
[2020-10-29 05:27:11,400 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:27:11,400 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5212
[2020-10-29 05:27:11,402 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:27:11,403 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:27:11,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-29 05:27:11,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 05:27:11,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1676
[2020-10-29 05:27:11,404 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-29 05:27:13,517 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:27:13,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:27:13,539 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:27:13,567 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:27:13,567 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:27:13,567 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:27:13,567 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 33
[2020-10-29 05:27:13,568 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:27:13,568 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:27:13,568 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:27:13,568 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:27:13,569 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 05:27:13,569 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 05:27:16,686 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 05:27:16,687 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014539370]
[2020-10-29 05:27:16,688 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 05:27:16,688 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-29 05:27:16,689 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635887052]
[2020-10-29 05:27:16,701 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-29 05:27:16,702 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:27:16,719 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-29 05:27:16,719 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-29 05:27:16,722 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 5 states.
[2020-10-29 05:27:52,789 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:27:52,790 INFO  L93              Difference]: Finished difference Result 8239 states and 15621 transitions.
[2020-10-29 05:27:52,792 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-29 05:27:52,794 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1661
[2020-10-29 05:27:52,804 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:27:52,866 INFO  L225             Difference]: With dead ends: 8239
[2020-10-29 05:27:52,866 INFO  L226             Difference]: Without dead ends: 5945
[2020-10-29 05:27:52,880 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-29 05:27:52,909 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5945 states.
[2020-10-29 05:27:53,122 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5945 to 5826.
[2020-10-29 05:27:53,123 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5826 states.
[2020-10-29 05:27:53,158 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5826 states to 5826 states and 10165 transitions.
[2020-10-29 05:27:53,161 INFO  L78                 Accepts]: Start accepts. Automaton has 5826 states and 10165 transitions. Word has length 1661
[2020-10-29 05:27:53,166 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:27:53,167 INFO  L481      AbstractCegarLoop]: Abstraction has 5826 states and 10165 transitions.
[2020-10-29 05:27:53,168 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-29 05:27:53,168 INFO  L276                IsEmpty]: Start isEmpty. Operand 5826 states and 10165 transitions.
[2020-10-29 05:27:53,316 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1688
[2020-10-29 05:27:53,316 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:27:53,317 INFO  L422         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 05:27:53,318 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-29 05:27:53,319 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:27:53,319 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:27:53,320 INFO  L82        PathProgramCache]: Analyzing trace with hash -1392747890, now seen corresponding path program 1 times
[2020-10-29 05:27:53,321 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:27:53,321 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693547406]
[2020-10-29 05:27:53,321 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:27:53,492 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:27:53,531 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:27:53,912 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:27:58,555 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:27:58,556 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1713
[2020-10-29 05:27:58,556 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 05:27:58,556 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5058
[2020-10-29 05:27:58,557 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:27:58,557 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:27:58,557 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 33
[2020-10-29 05:27:58,557 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 34
[2020-10-29 05:27:58,558 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1279
[2020-10-29 05:27:58,558 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 05:28:01,185 WARN  L193               SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35
[2020-10-29 05:28:01,302 WARN  L193               SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35
[2020-10-29 05:28:01,425 WARN  L193               SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33
[2020-10-29 05:28:02,934 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:28:02,938 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:28:02,940 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:02,945 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:28:02,946 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:28:02,946 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:28:02,946 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-29 05:28:02,946 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:28:02,946 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:28:02,946 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 05:28:02,947 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:28:02,947 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 05:28:02,947 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:28:02,998 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:28:03,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:28:03,011 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:03,054 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:28:03,054 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-29 05:28:03,054 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:28:03,055 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 47
[2020-10-29 05:28:03,055 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:28:03,055 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:28:03,055 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-10-29 05:28:03,055 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:28:03,055 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-10-29 05:28:03,056 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:28:22,126 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 05:28:22,126 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693547406]
[2020-10-29 05:28:22,127 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:28:22,127 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25
[2020-10-29 05:28:22,127 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111433624]
[2020-10-29 05:28:22,131 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-10-29 05:28:22,131 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:28:22,132 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-10-29 05:28:22,133 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600
[2020-10-29 05:28:22,133 INFO  L87              Difference]: Start difference. First operand 5826 states and 10165 transitions. Second operand 25 states.
[2020-10-29 05:28:23,297 WARN  L193               SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-10-29 05:28:23,700 WARN  L193               SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107
[2020-10-29 05:28:30,809 WARN  L193               SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106
[2020-10-29 05:28:32,327 WARN  L193               SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105
[2020-10-29 05:28:35,176 WARN  L193               SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96
[2020-10-29 05:28:35,578 WARN  L193               SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102
[2020-10-29 05:28:46,786 WARN  L193               SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96
[2020-10-29 05:28:47,170 WARN  L193               SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102
[2020-10-29 05:28:58,134 WARN  L193               SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96
[2020-10-29 05:28:58,527 WARN  L193               SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102
[2020-10-29 05:29:02,772 WARN  L193               SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101
[2020-10-29 05:29:09,959 WARN  L193               SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94
[2020-10-29 05:29:10,358 WARN  L193               SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-10-29 05:29:14,972 WARN  L193               SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98
[2020-10-29 05:29:21,769 WARN  L193               SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96
[2020-10-29 05:29:22,852 WARN  L193               SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90
[2020-10-29 05:29:23,169 WARN  L193               SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92
[2020-10-29 05:29:46,701 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:29:46,701 INFO  L93              Difference]: Finished difference Result 18163 states and 32515 transitions.
[2020-10-29 05:29:46,708 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2020-10-29 05:29:46,709 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states. Word has length 1687
[2020-10-29 05:29:46,712 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:29:46,786 INFO  L225             Difference]: With dead ends: 18163
[2020-10-29 05:29:46,786 INFO  L226             Difference]: Without dead ends: 12343
[2020-10-29 05:29:46,807 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=294, Invalid=1598, Unknown=0, NotChecked=0, Total=1892
[2020-10-29 05:29:46,825 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12343 states.
[2020-10-29 05:29:47,165 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12343 to 12331.
[2020-10-29 05:29:47,165 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12331 states.
[2020-10-29 05:29:47,202 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12331 states to 12331 states and 17246 transitions.
[2020-10-29 05:29:47,203 INFO  L78                 Accepts]: Start accepts. Automaton has 12331 states and 17246 transitions. Word has length 1687
[2020-10-29 05:29:47,206 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:29:47,206 INFO  L481      AbstractCegarLoop]: Abstraction has 12331 states and 17246 transitions.
[2020-10-29 05:29:47,207 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-10-29 05:29:47,207 INFO  L276                IsEmpty]: Start isEmpty. Operand 12331 states and 17246 transitions.
[2020-10-29 05:29:47,277 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1700
[2020-10-29 05:29:47,277 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:29:47,279 INFO  L422         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 05:29:47,279 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-29 05:29:47,280 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:29:47,281 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:29:47,282 INFO  L82        PathProgramCache]: Analyzing trace with hash -98443409, now seen corresponding path program 1 times
[2020-10-29 05:29:47,283 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:29:47,283 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632564526]
[2020-10-29 05:29:47,284 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:29:47,451 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:29:47,487 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:29:47,842 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:29:52,526 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:29:52,782 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:29:52,782 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1725
[2020-10-29 05:29:52,782 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-29 05:29:52,782 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5327
[2020-10-29 05:29:52,783 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:29:52,783 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:29:52,783 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-29 05:29:52,783 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 47
[2020-10-29 05:29:52,783 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1674
[2020-10-29 05:29:52,784 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:29:54,039 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:29:54,042 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:29:54,043 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:29:54,048 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:29:54,048 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:29:54,048 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:29:54,049 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-29 05:29:54,049 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:29:54,049 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:29:54,049 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 05:29:54,049 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:29:54,050 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 05:29:54,050 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:29:54,077 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:29:54,087 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:29:54,094 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:29:54,129 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:29:54,129 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 39
[2020-10-29 05:29:54,129 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:29:54,130 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 41
[2020-10-29 05:29:54,130 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:29:54,130 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:29:54,130 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:29:54,130 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:29:54,131 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-10-29 05:29:54,131 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:29:56,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 05:29:56,968 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632564526]
[2020-10-29 05:29:56,969 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:29:56,969 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-29 05:29:56,969 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427301993]
[2020-10-29 05:29:56,971 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-29 05:29:56,971 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:29:56,972 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-29 05:29:56,973 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-29 05:29:56,973 INFO  L87              Difference]: Start difference. First operand 12331 states and 17246 transitions. Second operand 6 states.