/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_label30.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-29 05:25:51,682 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-29 05:25:51,685 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-29 05:25:51,729 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-29 05:25:51,730 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-29 05:25:51,732 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-29 05:25:51,733 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-29 05:25:51,736 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-29 05:25:51,738 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-29 05:25:51,739 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-10-29 05:25:51,742 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-29 05:25:51,743 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-29 05:25:51,744 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-29 05:25:51,746 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-29 05:25:51,747 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-29 05:25:51,749 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-29 05:25:51,750 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-29 05:25:51,752 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-29 05:25:51,755 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-29 05:25:51,757 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-29 05:25:51,759 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-29 05:25:51,760 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-29 05:25:51,761 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-29 05:25:51,765 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-29 05:25:51,765 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-29 05:25:51,766 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-29 05:25:51,767 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-29 05:25:51,768 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-29 05:25:51,769 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-29 05:25:51,769 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-29 05:25:51,771 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-29 05:25:51,772 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
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[2020-10-29 05:25:51,774 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-29 05:25:51,775 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-29 05:25:51,776 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-29 05:25:51,776 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-29 05:25:51,776 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-10-29 05:25:51,797 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-29 05:25:51,798 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 05:25:51,826 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-29 05:25:51,826 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-29 05:25:51,828 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-29 05:25:51,829 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-29 05:25:51,829 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-29 05:25:51,829 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-29 05:25:51,830 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-29 05:25:51,830 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-29 05:25:51,830 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-29 05:25:51,830 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-29 05:25:51,831 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-29 05:25:51,831 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-29 05:25:51,831 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-29 05:25:51,831 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-29 05:25:51,832 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-29 05:25:51,832 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-29 05:25:51,832 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-29 05:25:51,832 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-29 05:25:51,833 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-29 05:25:51,833 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-29 05:25:51,833 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-29 05:25:51,834 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-29 05:25:51,834 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-29 05:25:51,834 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-29 05:25:51,835 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-29 05:25:51,835 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-29 05:25:51,835 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-29 05:25:51,835 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-29 05:25:51,836 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-29 05:25:51,836 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true;
[2020-10-29 05:25:52,265 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-29 05:25:52,305 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-29 05:25:52,308 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-29 05:25:52,310 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-29 05:25:52,311 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-29 05:25:52,312 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label30.c
[2020-10-29 05:25:52,402 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe4f1c99e/e8e45116819642f3963c352063cffc0f/FLAG348b61ce8
[2020-10-29 05:25:53,782 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-29 05:25:53,784 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label30.c
[2020-10-29 05:25:53,836 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe4f1c99e/e8e45116819642f3963c352063cffc0f/FLAG348b61ce8
[2020-10-29 05:25:53,852 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe4f1c99e/e8e45116819642f3963c352063cffc0f
[2020-10-29 05:25:53,855 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-29 05:25:53,862 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-29 05:25:53,863 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-29 05:25:53,864 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-29 05:25:53,868 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-29 05:25:53,869 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:25:53" (1/1) ...
[2020-10-29 05:25:53,872 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@263e3524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:53, skipping insertion in model container
[2020-10-29 05:25:53,872 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:25:53" (1/1) ...
[2020-10-29 05:25:53,881 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-29 05:25:54,092 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-29 05:25:56,342 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 05:25:56,363 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-29 05:25:57,557 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 05:25:57,634 INFO  L208         MainTranslator]: Completed translation
[2020-10-29 05:25:57,634 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:57 WrapperNode
[2020-10-29 05:25:57,635 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-29 05:25:57,636 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-29 05:25:57,636 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-29 05:25:57,636 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-29 05:25:57,651 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:57" (1/1) ...
[2020-10-29 05:25:57,651 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:57" (1/1) ...
[2020-10-29 05:25:57,779 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:57" (1/1) ...
[2020-10-29 05:25:57,779 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:57" (1/1) ...
[2020-10-29 05:25:58,037 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:57" (1/1) ...
[2020-10-29 05:25:58,098 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:57" (1/1) ...
[2020-10-29 05:25:58,181 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:57" (1/1) ...
[2020-10-29 05:25:58,366 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-29 05:25:58,369 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-29 05:25:58,369 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-29 05:25:58,369 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-29 05:25:58,370 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:57" (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 05:25:58,462 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-29 05:25:58,462 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-29 05:25:58,463 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-29 05:25:58,463 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-29 05:25:58,463 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-29 05:25:58,464 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-29 05:25:58,464 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-29 05:25:58,464 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-29 05:25:58,464 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-29 05:25:58,464 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-29 05:25:58,465 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-29 05:25:58,466 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-29 05:25:58,466 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-29 05:25:58,466 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-29 05:25:58,466 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-29 05:25:58,467 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-29 05:25:58,467 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-29 05:25:58,467 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-29 05:25:58,468 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-29 05:25:58,469 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-29 05:25:58,469 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-29 05:25:58,469 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-29 05:25:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-29 05:25:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-29 05:25:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-29 05:25:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-29 05:25:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-29 05:25:58,471 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-29 05:25:58,471 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-29 05:25:58,471 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-29 05:25:58,471 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-29 05:25:58,471 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-29 05:25:58,471 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-29 05:26:08,739 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-29 05:26:08,740 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-29 05:26:08,747 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:26:08 BoogieIcfgContainer
[2020-10-29 05:26:08,748 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-29 05:26:08,753 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-29 05:26:08,753 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-29 05:26:08,757 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-29 05:26:08,758 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:25:53" (1/3) ...
[2020-10-29 05:26:08,758 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a156d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:26:08, skipping insertion in model container
[2020-10-29 05:26:08,759 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:57" (2/3) ...
[2020-10-29 05:26:08,759 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a156d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:26:08, skipping insertion in model container
[2020-10-29 05:26:08,759 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:26:08" (3/3) ...
[2020-10-29 05:26:08,761 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label30.c
[2020-10-29 05:26:08,775 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-29 05:26:08,783 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-29 05:26:08,799 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-29 05:26:08,853 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-29 05:26:08,853 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-29 05:26:08,853 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-29 05:26:08,854 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-29 05:26:08,854 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-29 05:26:08,855 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-29 05:26:08,856 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-29 05:26:08,856 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-29 05:26:08,919 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-29 05:26:09,066 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1676
[2020-10-29 05:26:09,066 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:26:09,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 05:26:09,070 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:26:09,079 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:26:09,080 INFO  L82        PathProgramCache]: Analyzing trace with hash -1069094879, now seen corresponding path program 1 times
[2020-10-29 05:26:09,091 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:26:09,092 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73581492]
[2020-10-29 05:26:09,093 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:26:10,290 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:26:10,816 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:26:15,400 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:26:15,401 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1699
[2020-10-29 05:26:15,401 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:26:15,402 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5100
[2020-10-29 05:26:15,405 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:26:15,405 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:26:15,405 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-29 05:26:15,406 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 05:26:15,406 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1690
[2020-10-29 05:26:15,406 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-29 05:26:17,089 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:26:17,099 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:26:17,103 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:26:17,119 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:26:17,119 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:26:17,120 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:26:17,120 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-10-29 05:26:17,120 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:26:17,120 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:26:17,120 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:26:17,121 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:26:17,121 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 05:26:17,121 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 05:26:19,893 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 05:26:19,894 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73581492]
[2020-10-29 05:26:19,896 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 05:26:19,897 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-29 05:26:19,898 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162532585]
[2020-10-29 05:26:19,908 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-29 05:26:19,908 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:26:19,923 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-29 05:26:19,924 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-29 05:26:19,926 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 4 states.
[2020-10-29 05:26:40,677 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:26:40,678 INFO  L93              Difference]: Finished difference Result 6315 states and 11856 transitions.
[2020-10-29 05:26:40,679 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-29 05:26:40,680 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1675
[2020-10-29 05:26:40,693 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:26:40,751 INFO  L225             Difference]: With dead ends: 6315
[2020-10-29 05:26:40,751 INFO  L226             Difference]: Without dead ends: 4025
[2020-10-29 05:26:40,767 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-29 05:26:40,797 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4025 states.
[2020-10-29 05:26:41,010 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998.
[2020-10-29 05:26:41,012 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3998 states.
[2020-10-29 05:26:41,034 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions.
[2020-10-29 05:26:41,036 INFO  L78                 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1675
[2020-10-29 05:26:41,044 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:26:41,045 INFO  L481      AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions.
[2020-10-29 05:26:41,045 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-29 05:26:41,046 INFO  L276                IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions.
[2020-10-29 05:26:41,173 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1685
[2020-10-29 05:26:41,173 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:26:41,175 INFO  L422         BasicCegarLoop]: trace histogram [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, 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]
[2020-10-29 05:26:41,177 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-29 05:26:41,177 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:26:41,178 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:26:41,178 INFO  L82        PathProgramCache]: Analyzing trace with hash -1168384859, now seen corresponding path program 1 times
[2020-10-29 05:26:41,179 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:26:41,179 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368123587]
[2020-10-29 05:26:41,180 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:26:41,326 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:26:41,358 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:26:43,335 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:26:46,385 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:26:46,386 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1710
[2020-10-29 05:26:46,386 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 05:26:46,386 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5054
[2020-10-29 05:26:46,387 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:26:46,388 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:26:46,388 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-29 05:26:46,388 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-29 05:26:46,388 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1687
[2020-10-29 05:26:46,388 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 05:26:48,021 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:26:48,028 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:26:48,033 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:26:48,052 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:26:48,053 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:26:48,053 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:26:48,053 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-10-29 05:26:48,053 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:26:48,053 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:26:48,053 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 05:26:48,054 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:26:48,054 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 05:26:48,054 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:26:48,083 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:26:48,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:26:48,092 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:26:48,102 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:26:48,102 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-29 05:26:48,103 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:26:48,103 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-10-29 05:26:48,103 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:26:48,103 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:26:48,103 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:26:48,104 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:26:48,104 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-29 05:26:48,104 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:26:50,993 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 05:26:50,994 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368123587]
[2020-10-29 05:26:50,994 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:26:50,995 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-29 05:26:50,995 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761040304]
[2020-10-29 05:26:50,999 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-29 05:26:50,999 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:26:51,000 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-29 05:26:51,000 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-29 05:26:51,000 INFO  L87              Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 6 states.
[2020-10-29 05:27:25,732 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:27:25,732 INFO  L93              Difference]: Finished difference Result 15230 states and 24994 transitions.
[2020-10-29 05:27:25,733 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-29 05:27:25,733 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 1684
[2020-10-29 05:27:25,738 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:27:25,796 INFO  L225             Difference]: With dead ends: 15230
[2020-10-29 05:27:25,797 INFO  L226             Difference]: Without dead ends: 11238
[2020-10-29 05:27:25,808 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2020-10-29 05:27:25,822 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11238 states.
[2020-10-29 05:27:26,144 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11238 to 11081.
[2020-10-29 05:27:26,144 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11081 states.
[2020-10-29 05:27:26,189 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11081 states to 11081 states and 17678 transitions.
[2020-10-29 05:27:26,190 INFO  L78                 Accepts]: Start accepts. Automaton has 11081 states and 17678 transitions. Word has length 1684
[2020-10-29 05:27:26,193 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:27:26,193 INFO  L481      AbstractCegarLoop]: Abstraction has 11081 states and 17678 transitions.
[2020-10-29 05:27:26,193 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-29 05:27:26,193 INFO  L276                IsEmpty]: Start isEmpty. Operand 11081 states and 17678 transitions.
[2020-10-29 05:27:26,334 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1693
[2020-10-29 05:27:26,334 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:27:26,336 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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]
[2020-10-29 05:27:26,336 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-29 05:27:26,336 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:27:26,338 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:27:26,340 INFO  L82        PathProgramCache]: Analyzing trace with hash -967927391, now seen corresponding path program 1 times
[2020-10-29 05:27:26,340 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:27:26,340 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660329462]
[2020-10-29 05:27:26,341 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:27:26,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:27:26,494 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:27:26,568 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:27:28,203 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:27:31,522 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:27:31,523 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1720
[2020-10-29 05:27:31,523 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-29 05:27:31,523 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5051
[2020-10-29 05:27:31,523 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:27:31,523 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:27:31,524 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-29 05:27:31,524 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 05:27:31,524 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 25
[2020-10-29 05:27:31,524 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:27:32,050 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:27:32,055 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:27:32,058 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:27:32,068 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:27:32,068 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:27:32,069 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:27:32,069 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-10-29 05:27:32,069 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:27:32,069 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:27:32,069 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:27:32,070 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:27:32,070 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 05:27:32,070 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:27:32,096 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:27:32,099 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:27:32,101 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:27:32,106 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:27:32,112 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:27:32,113 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-29 05:27:32,113 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 05:27:32,113 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-10-29 05:27:32,113 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:27:32,113 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:27:32,114 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 05:27:32,114 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 05:27:32,114 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-29 05:27:32,114 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:27:32,133 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-29 05:27:32,136 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:27:32,138 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:27:32,147 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:27:32,147 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-29 05:27:32,147 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:27:32,148 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-29 05:27:32,148 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:27:32,148 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:27:32,148 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 05:27:32,148 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 05:27:32,149 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-10-29 05:27:32,149 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:27:33,431 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-10-29 05:27:33,431 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660329462]
[2020-10-29 05:27:33,431 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:27:33,436 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-29 05:27:33,437 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657159165]
[2020-10-29 05:27:33,439 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-29 05:27:33,441 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:27:33,442 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-29 05:27:33,442 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2020-10-29 05:27:33,443 INFO  L87              Difference]: Start difference. First operand 11081 states and 17678 transitions. Second operand 8 states.
[2020-10-29 05:28:02,725 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:28:02,725 INFO  L93              Difference]: Finished difference Result 32935 states and 53858 transitions.
[2020-10-29 05:28:02,729 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-29 05:28:02,730 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1692
[2020-10-29 05:28:02,730 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:28:02,822 INFO  L225             Difference]: With dead ends: 32935
[2020-10-29 05:28:02,822 INFO  L226             Difference]: Without dead ends: 21860
[2020-10-29 05:28:02,853 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2020-10-29 05:28:02,876 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21860 states.
[2020-10-29 05:28:03,350 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21860 to 21771.
[2020-10-29 05:28:03,350 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 21771 states.
[2020-10-29 05:28:03,399 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21771 states to 21771 states and 33698 transitions.
[2020-10-29 05:28:03,400 INFO  L78                 Accepts]: Start accepts. Automaton has 21771 states and 33698 transitions. Word has length 1692
[2020-10-29 05:28:03,401 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:28:03,401 INFO  L481      AbstractCegarLoop]: Abstraction has 21771 states and 33698 transitions.
[2020-10-29 05:28:03,401 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-29 05:28:03,401 INFO  L276                IsEmpty]: Start isEmpty. Operand 21771 states and 33698 transitions.
[2020-10-29 05:28:03,484 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1733
[2020-10-29 05:28:03,484 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:28:03,486 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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]
[2020-10-29 05:28:03,486 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-29 05:28:03,486 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:28:03,487 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:28:03,487 INFO  L82        PathProgramCache]: Analyzing trace with hash 254282342, now seen corresponding path program 1 times
[2020-10-29 05:28:03,488 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:28:03,488 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089439037]
[2020-10-29 05:28:03,489 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:28:03,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:28:03,646 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:03,722 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:08,707 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:28:08,708 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1760
[2020-10-29 05:28:08,708 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 05:28:08,708 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5084
[2020-10-29 05:28:08,708 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:28:08,708 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:28:08,709 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 05:28:08,709 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-29 05:28:08,709 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 51
[2020-10-29 05:28:08,709 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:28:09,200 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:28:09,202 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:28:09,204 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:09,208 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:28:09,208 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:28:09,208 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:28:09,209 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-29 05:28:09,209 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:28:09,209 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:28:09,209 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 05:28:09,209 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:28:09,209 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 05:28:09,209 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:28:09,229 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:28:09,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:28:09,233 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:09,240 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:28:09,240 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-29 05:28:09,240 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:28:09,241 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-29 05:28:09,241 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:28:09,241 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:28:09,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:28:09,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:28:09,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-29 05:28:09,242 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:28:09,252 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-29 05:28:09,264 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:28:09,273 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:09,344 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:28:09,344 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-29 05:28:09,344 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:28:09,344 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 78
[2020-10-29 05:28:09,344 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:28:09,345 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:28:09,345 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 05:28:09,345 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 05:28:09,345 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 49
[2020-10-29 05:28:09,345 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:28:10,934 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-29 05:28:10,935 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089439037]
[2020-10-29 05:28:10,935 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:28:10,935 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-29 05:28:10,935 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440861270]
[2020-10-29 05:28:10,937 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-29 05:28:10,937 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:28:10,938 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-29 05:28:10,938 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2020-10-29 05:28:10,938 INFO  L87              Difference]: Start difference. First operand 21771 states and 33698 transitions. Second operand 8 states.
[2020-10-29 05:28:46,949 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:28:46,950 INFO  L93              Difference]: Finished difference Result 58310 states and 92043 transitions.
[2020-10-29 05:28:46,951 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-29 05:28:46,951 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1732
[2020-10-29 05:28:46,951 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:28:47,106 INFO  L225             Difference]: With dead ends: 58310
[2020-10-29 05:28:47,106 INFO  L226             Difference]: Without dead ends: 36545
[2020-10-29 05:28:47,164 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2020-10-29 05:28:47,208 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36545 states.
[2020-10-29 05:28:47,929 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36545 to 36377.
[2020-10-29 05:28:47,930 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 36377 states.
[2020-10-29 05:28:48,020 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36377 states to 36377 states and 53905 transitions.
[2020-10-29 05:28:48,022 INFO  L78                 Accepts]: Start accepts. Automaton has 36377 states and 53905 transitions. Word has length 1732
[2020-10-29 05:28:48,023 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:28:48,023 INFO  L481      AbstractCegarLoop]: Abstraction has 36377 states and 53905 transitions.
[2020-10-29 05:28:48,023 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-29 05:28:48,023 INFO  L276                IsEmpty]: Start isEmpty. Operand 36377 states and 53905 transitions.
[2020-10-29 05:28:48,150 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1762
[2020-10-29 05:28:48,150 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:28:48,151 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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]
[2020-10-29 05:28:48,152 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-29 05:28:48,152 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:28:48,152 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:28:48,153 INFO  L82        PathProgramCache]: Analyzing trace with hash -1562946970, now seen corresponding path program 1 times
[2020-10-29 05:28:48,154 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:28:48,154 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755695652]
[2020-10-29 05:28:48,155 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:28:48,294 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:28:48,324 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:48,403 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:48,771 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:51,045 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:53,158 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:53,598 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:28:53,599 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1789
[2020-10-29 05:28:53,599 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-10-29 05:28:53,599 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5299
[2020-10-29 05:28:53,599 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:28:53,599 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:28:53,599 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-29 05:28:53,599 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 05:28:53,600 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 94
[2020-10-29 05:28:53,600 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:28:53,987 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:28:53,992 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:28:53,994 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:54,003 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:28:54,003 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:28:54,003 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:28:54,003 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-29 05:28:54,003 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:28:54,004 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:28:54,004 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:28:54,004 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:28:54,004 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 05:28:54,004 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:28:54,030 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:28:54,038 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:28:54,043 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:54,055 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:54,077 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:54,150 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:28:54,150 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 39
[2020-10-29 05:28:54,150 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-29 05:28:54,151 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 111
[2020-10-29 05:28:54,151 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:28:54,151 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:28:54,151 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:28:54,151 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:28:54,151 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-10-29 05:28:54,151 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:28:54,160 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46
[2020-10-29 05:28:54,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:28:54,176 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:28:54,222 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:28:54,222 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-29 05:28:54,222 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:28:54,222 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 50
[2020-10-29 05:28:54,222 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:28:54,222 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:28:54,222 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 05:28:54,222 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 05:28:54,223 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 49
[2020-10-29 05:28:54,223 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:28:55,452 INFO  L134       CoverageAnalysis]: Checked inductivity of 114 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-10-29 05:28:55,453 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755695652]
[2020-10-29 05:28:55,453 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:28:55,453 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-29 05:28:55,453 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205387400]
[2020-10-29 05:28:55,455 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-29 05:28:55,455 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:28:55,455 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-29 05:28:55,455 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-29 05:28:55,456 INFO  L87              Difference]: Start difference. First operand 36377 states and 53905 transitions. Second operand 7 states.
[2020-10-29 05:29:25,459 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:29:25,459 INFO  L93              Difference]: Finished difference Result 109264 states and 173480 transitions.
[2020-10-29 05:29:25,460 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-29 05:29:25,460 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1761
[2020-10-29 05:29:25,461 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:29:25,772 INFO  L225             Difference]: With dead ends: 109264
[2020-10-29 05:29:25,773 INFO  L226             Difference]: Without dead ends: 72893
[2020-10-29 05:29:25,857 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-29 05:29:25,932 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 72893 states.
[2020-10-29 05:29:27,381 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 72893 to 72704.
[2020-10-29 05:29:27,381 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 72704 states.
[2020-10-29 05:29:27,535 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 72704 states to 72704 states and 106492 transitions.
[2020-10-29 05:29:27,536 INFO  L78                 Accepts]: Start accepts. Automaton has 72704 states and 106492 transitions. Word has length 1761
[2020-10-29 05:29:27,537 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:29:27,537 INFO  L481      AbstractCegarLoop]: Abstraction has 72704 states and 106492 transitions.
[2020-10-29 05:29:27,537 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-29 05:29:27,537 INFO  L276                IsEmpty]: Start isEmpty. Operand 72704 states and 106492 transitions.
[2020-10-29 05:29:27,788 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1783
[2020-10-29 05:29:27,789 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:29:27,790 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2020-10-29 05:29:27,791 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-29 05:29:27,791 INFO  L429      AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:29:27,791 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:29:27,792 INFO  L82        PathProgramCache]: Analyzing trace with hash 1055223761, now seen corresponding path program 1 times
[2020-10-29 05:29:27,793 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:29:27,793 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490149008]
[2020-10-29 05:29:27,793 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:29:28,582 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:29:28,969 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:29:29,261 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:29:29,980 FATAL L256   erpolLogProxyWrapper]: Now shrinking...