/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/Problem19_label22.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-29 08:48:26,599 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-29 08:48:26,605 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-29 08:48:26,675 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-29 08:48:26,676 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-29 08:48:26,684 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-29 08:48:26,687 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-29 08:48:26,692 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-29 08:48:26,697 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-29 08:48:26,705 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-29 08:48:26,707 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-29 08:48:26,712 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-29 08:48:26,713 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-29 08:48:26,717 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-29 08:48:26,721 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-29 08:48:26,724 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-29 08:48:26,726 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-29 08:48:26,730 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-29 08:48:26,738 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-29 08:48:26,749 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-29 08:48:26,752 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-29 08:48:26,754 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-29 08:48:26,756 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-29 08:48:26,759 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-29 08:48:26,784 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-29 08:48:26,785 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-29 08:48:26,785 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-29 08:48:26,789 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-29 08:48:26,789 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-29 08:48:26,790 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-29 08:48:26,791 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-29 08:48:26,792 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-29 08:48:26,794 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-29 08:48:26,795 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-29 08:48:26,796 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-29 08:48:26,796 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-29 08:48:26,797 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-29 08:48:26,798 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-29 08:48:26,798 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-29 08:48:26,799 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-29 08:48:26,800 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-29 08:48:26,801 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 08:48:26,831 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-29 08:48:26,832 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-29 08:48:26,834 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-29 08:48:26,835 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-29 08:48:26,835 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-29 08:48:26,835 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-29 08:48:26,835 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-29 08:48:26,836 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-29 08:48:26,836 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-29 08:48:26,836 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-29 08:48:26,836 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-29 08:48:26,837 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-29 08:48:26,837 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-29 08:48:26,837 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-29 08:48:26,837 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-29 08:48:26,837 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-29 08:48:26,838 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-29 08:48:26,838 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-29 08:48:26,838 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-29 08:48:26,838 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-29 08:48:26,839 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-29 08:48:26,839 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-29 08:48:26,839 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-29 08:48:26,839 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-29 08:48:26,840 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-29 08:48:26,840 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-29 08:48:26,840 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-29 08:48:26,840 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-29 08:48:26,840 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-29 08:48:26,841 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true;
[2020-10-29 08:48:27,407 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-29 08:48:27,464 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-29 08:48:27,469 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-29 08:48:27,471 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-29 08:48:27,472 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-29 08:48:27,473 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label22.c
[2020-10-29 08:48:27,583 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8d4f19fc/cf725a07e2144f16961e32916a864e2b/FLAGa59ed5135
[2020-10-29 08:48:29,150 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-29 08:48:29,151 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label22.c
[2020-10-29 08:48:29,272 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8d4f19fc/cf725a07e2144f16961e32916a864e2b/FLAGa59ed5135
[2020-10-29 08:48:29,751 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8d4f19fc/cf725a07e2144f16961e32916a864e2b
[2020-10-29 08:48:29,759 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-29 08:48:29,768 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-29 08:48:29,773 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-29 08:48:29,773 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-29 08:48:29,778 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-29 08:48:29,780 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:48:29" (1/1) ...
[2020-10-29 08:48:29,786 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42323d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:29, skipping insertion in model container
[2020-10-29 08:48:29,787 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:48:29" (1/1) ...
[2020-10-29 08:48:29,797 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-29 08:48:30,043 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-29 08:48:32,430 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 08:48:32,452 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-29 08:48:33,622 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 08:48:33,700 INFO  L208         MainTranslator]: Completed translation
[2020-10-29 08:48:33,701 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:33 WrapperNode
[2020-10-29 08:48:33,702 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-29 08:48:33,704 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-29 08:48:33,704 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-29 08:48:33,704 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-29 08:48:33,724 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:33" (1/1) ...
[2020-10-29 08:48:33,727 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:33" (1/1) ...
[2020-10-29 08:48:33,886 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:33" (1/1) ...
[2020-10-29 08:48:33,886 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:33" (1/1) ...
[2020-10-29 08:48:34,292 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:33" (1/1) ...
[2020-10-29 08:48:34,392 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:33" (1/1) ...
[2020-10-29 08:48:34,500 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:33" (1/1) ...
[2020-10-29 08:48:34,629 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-29 08:48:34,630 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-29 08:48:34,631 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-29 08:48:34,631 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-29 08:48:34,633 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:33" (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 08:48:34,741 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-29 08:48:34,741 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-29 08:48:34,741 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-29 08:48:34,742 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-29 08:48:34,742 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-29 08:48:34,742 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-29 08:48:34,742 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-29 08:48:34,742 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-29 08:48:34,743 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-29 08:48:34,743 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-29 08:48:34,743 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-29 08:48:34,743 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-29 08:48:34,743 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-29 08:48:34,744 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-29 08:48:34,744 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-29 08:48:34,744 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-29 08:48:34,744 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-29 08:48:34,744 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-29 08:48:34,745 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-29 08:48:34,745 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-29 08:48:34,745 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-29 08:48:34,745 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-29 08:48:34,745 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-29 08:48:34,745 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-29 08:48:34,746 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-29 08:48:34,746 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-29 08:48:34,746 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-29 08:48:34,746 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-29 08:48:34,746 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-29 08:48:50,015 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-29 08:48:50,016 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-29 08:48:50,020 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:48:50 BoogieIcfgContainer
[2020-10-29 08:48:50,021 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-29 08:48:50,023 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-29 08:48:50,023 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-29 08:48:50,026 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-29 08:48:50,027 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:48:29" (1/3) ...
[2020-10-29 08:48:50,028 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcb3d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:48:50, skipping insertion in model container
[2020-10-29 08:48:50,028 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:33" (2/3) ...
[2020-10-29 08:48:50,028 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcb3d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:48:50, skipping insertion in model container
[2020-10-29 08:48:50,029 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:48:50" (3/3) ...
[2020-10-29 08:48:50,030 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem19_label22.c
[2020-10-29 08:48:50,043 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-29 08:48:50,049 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-29 08:48:50,063 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-29 08:48:50,101 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-29 08:48:50,102 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-29 08:48:50,102 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-29 08:48:50,102 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-29 08:48:50,102 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-29 08:48:50,102 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-29 08:48:50,102 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-29 08:48:50,102 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-29 08:48:50,183 INFO  L276                IsEmpty]: Start isEmpty. Operand 1781 states.
[2020-10-29 08:48:50,192 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2020-10-29 08:48:50,192 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 08:48:50,193 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]
[2020-10-29 08:48:50,194 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 08:48:50,201 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 08:48:50,201 INFO  L82        PathProgramCache]: Analyzing trace with hash 1209651973, now seen corresponding path program 1 times
[2020-10-29 08:48:50,211 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 08:48:50,212 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416466537]
[2020-10-29 08:48:50,212 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 08:48:50,499 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:48:50,606 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:48:51,134 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:48:51,135 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 46
[2020-10-29 08:48:51,135 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:48:51,135 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 629
[2020-10-29 08:48:51,138 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:48:51,138 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:48:51,138 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-29 08:48:51,139 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 08:48:51,140 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 37
[2020-10-29 08:48:51,140 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-10-29 08:48:51,315 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 08:48:51,334 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:48:51,343 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:48:51,383 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:48:51,384 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 08:48:51,384 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:48:51,384 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 48
[2020-10-29 08:48:51,384 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:48:51,384 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:48:51,385 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 08:48:51,385 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 08:48:51,385 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 08:48:51,385 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 08:48:51,415 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 08:48:51,415 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416466537]
[2020-10-29 08:48:51,418 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 08:48:51,418 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-29 08:48:51,420 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692725568]
[2020-10-29 08:48:51,425 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-29 08:48:51,426 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 08:48:51,445 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-29 08:48:51,446 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-29 08:48:51,449 INFO  L87              Difference]: Start difference. First operand 1781 states. Second operand 4 states.
[2020-10-29 08:49:19,525 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 08:49:19,526 INFO  L93              Difference]: Finished difference Result 5100 states and 9572 transitions.
[2020-10-29 08:49:19,532 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-29 08:49:19,534 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 36
[2020-10-29 08:49:19,535 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 08:49:19,583 INFO  L225             Difference]: With dead ends: 5100
[2020-10-29 08:49:19,583 INFO  L226             Difference]: Without dead ends: 3255
[2020-10-29 08:49:19,598 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-29 08:49:19,625 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3255 states.
[2020-10-29 08:49:19,812 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 3209.
[2020-10-29 08:49:19,814 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3209 states.
[2020-10-29 08:49:19,832 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3209 states to 3209 states and 5178 transitions.
[2020-10-29 08:49:19,834 INFO  L78                 Accepts]: Start accepts. Automaton has 3209 states and 5178 transitions. Word has length 36
[2020-10-29 08:49:19,835 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 08:49:19,835 INFO  L481      AbstractCegarLoop]: Abstraction has 3209 states and 5178 transitions.
[2020-10-29 08:49:19,835 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-29 08:49:19,835 INFO  L276                IsEmpty]: Start isEmpty. Operand 3209 states and 5178 transitions.
[2020-10-29 08:49:19,842 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 112
[2020-10-29 08:49:19,843 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 08:49:19,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:49:19,845 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-29 08:49:19,845 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 08:49:19,845 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 08:49:19,846 INFO  L82        PathProgramCache]: Analyzing trace with hash -1200286052, now seen corresponding path program 1 times
[2020-10-29 08:49:19,847 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 08:49:19,848 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297210898]
[2020-10-29 08:49:19,848 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 08:49:19,921 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:49:19,963 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:49:20,475 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:49:20,816 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:49:21,687 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:49:21,688 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 123
[2020-10-29 08:49:21,688 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-29 08:49:21,688 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1762
[2020-10-29 08:49:21,689 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:49:21,689 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:49:21,690 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-29 08:49:21,690 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 08:49:21,690 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 81
[2020-10-29 08:49:21,691 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-29 08:49:21,824 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 08:49:21,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:49:21,832 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:49:21,849 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:49:21,856 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 08:49:21,857 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:49:21,857 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-10-29 08:49:21,857 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:49:21,857 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:49:21,857 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 08:49:21,858 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 08:49:21,858 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 08:49:21,858 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 08:49:21,889 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 08:49:21,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:49:21,937 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:49:22,110 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:49:22,111 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-10-29 08:49:22,111 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:49:22,111 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 193
[2020-10-29 08:49:22,111 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:49:22,111 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:49:22,112 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 08:49:22,112 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 08:49:22,112 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 76
[2020-10-29 08:49:22,112 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 08:49:22,209 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 08:49:22,209 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297210898]
[2020-10-29 08:49:22,210 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 08:49:22,210 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-29 08:49:22,210 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846220810]
[2020-10-29 08:49:22,213 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-29 08:49:22,213 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 08:49:22,214 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-29 08:49:22,215 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-29 08:49:22,215 INFO  L87              Difference]: Start difference. First operand 3209 states and 5178 transitions. Second operand 7 states.
[2020-10-29 08:50:05,037 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 08:50:05,038 INFO  L93              Difference]: Finished difference Result 9454 states and 15385 transitions.
[2020-10-29 08:50:05,039 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-29 08:50:05,040 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 111
[2020-10-29 08:50:05,040 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 08:50:05,079 INFO  L225             Difference]: With dead ends: 9454
[2020-10-29 08:50:05,079 INFO  L226             Difference]: Without dead ends: 6251
[2020-10-29 08:50:05,090 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-29 08:50:05,101 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6251 states.
[2020-10-29 08:50:05,296 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 6159.
[2020-10-29 08:50:05,296 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6159 states.
[2020-10-29 08:50:05,325 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6159 states to 6159 states and 8994 transitions.
[2020-10-29 08:50:05,325 INFO  L78                 Accepts]: Start accepts. Automaton has 6159 states and 8994 transitions. Word has length 111
[2020-10-29 08:50:05,327 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 08:50:05,328 INFO  L481      AbstractCegarLoop]: Abstraction has 6159 states and 8994 transitions.
[2020-10-29 08:50:05,328 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-29 08:50:05,328 INFO  L276                IsEmpty]: Start isEmpty. Operand 6159 states and 8994 transitions.
[2020-10-29 08:50:05,341 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 138
[2020-10-29 08:50:05,341 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 08:50:05,343 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:50:05,343 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-29 08:50:05,343 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 08:50:05,345 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 08:50:05,346 INFO  L82        PathProgramCache]: Analyzing trace with hash 2033071834, now seen corresponding path program 1 times
[2020-10-29 08:50:05,346 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 08:50:05,348 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134064955]
[2020-10-29 08:50:05,349 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 08:50:05,407 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:50:05,442 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:50:05,586 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:50:06,563 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:50:07,575 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:50:07,578 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 149
[2020-10-29 08:50:07,578 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-29 08:50:07,579 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2165
[2020-10-29 08:50:07,579 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:50:07,579 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:50:07,579 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-29 08:50:07,580 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 08:50:07,580 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 107
[2020-10-29 08:50:07,580 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 08:50:07,778 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 08:50:07,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:50:07,882 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:50:07,896 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:50:07,897 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 08:50:07,897 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:50:07,897 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 108
[2020-10-29 08:50:07,897 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:50:07,898 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:50:07,898 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 08:50:07,898 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 08:50:07,898 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 08:50:07,899 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 08:50:07,944 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 08:50:07,978 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:50:08,006 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:50:08,251 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:50:08,252 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 102
[2020-10-29 08:50:08,252 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:50:08,252 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 270
[2020-10-29 08:50:08,252 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:50:08,253 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:50:08,253 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 08:50:08,253 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 08:50:08,253 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 102
[2020-10-29 08:50:08,254 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 08:50:08,385 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 08:50:08,386 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134064955]
[2020-10-29 08:50:08,386 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 08:50:08,386 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-29 08:50:08,386 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842428825]
[2020-10-29 08:50:08,389 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-29 08:50:08,389 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 08:50:08,390 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-29 08:50:08,391 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-29 08:50:08,391 INFO  L87              Difference]: Start difference. First operand 6159 states and 8994 transitions. Second operand 7 states.
[2020-10-29 08:51:04,160 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 08:51:04,160 INFO  L93              Difference]: Finished difference Result 18793 states and 27962 transitions.
[2020-10-29 08:51:04,162 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-29 08:51:04,162 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 137
[2020-10-29 08:51:04,163 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 08:51:04,291 INFO  L225             Difference]: With dead ends: 18793
[2020-10-29 08:51:04,291 INFO  L226             Difference]: Without dead ends: 12640
[2020-10-29 08:51:04,310 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-29 08:51:04,331 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12640 states.
[2020-10-29 08:51:04,646 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12640 to 12372.
[2020-10-29 08:51:04,646 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12372 states.
[2020-10-29 08:51:04,680 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12372 states to 12372 states and 16448 transitions.
[2020-10-29 08:51:04,681 INFO  L78                 Accepts]: Start accepts. Automaton has 12372 states and 16448 transitions. Word has length 137
[2020-10-29 08:51:04,683 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 08:51:04,683 INFO  L481      AbstractCegarLoop]: Abstraction has 12372 states and 16448 transitions.
[2020-10-29 08:51:04,683 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-29 08:51:04,683 INFO  L276                IsEmpty]: Start isEmpty. Operand 12372 states and 16448 transitions.
[2020-10-29 08:51:04,693 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2020-10-29 08:51:04,695 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 08:51:04,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:51:04,696 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-29 08:51:04,697 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 08:51:04,697 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 08:51:04,697 INFO  L82        PathProgramCache]: Analyzing trace with hash -614701618, now seen corresponding path program 1 times
[2020-10-29 08:51:04,697 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 08:51:04,698 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823976887]
[2020-10-29 08:51:04,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 08:51:04,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:51:04,797 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:51:04,902 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:51:05,057 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:51:05,700 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:51:06,421 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:51:06,422 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 171
[2020-10-29 08:51:06,422 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-29 08:51:06,422 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1663
[2020-10-29 08:51:06,423 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:51:06,423 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:51:06,423 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-29 08:51:06,423 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 08:51:06,423 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 128
[2020-10-29 08:51:06,424 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 08:51:06,581 WARN  L193               SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64
[2020-10-29 08:51:06,582 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 08:51:06,589 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:51:06,593 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:51:06,606 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:51:06,606 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 08:51:06,606 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:51:06,606 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-10-29 08:51:06,607 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:51:06,607 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:51:06,607 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 08:51:06,607 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 08:51:06,607 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 08:51:06,608 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 08:51:06,647 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 08:51:06,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:51:06,692 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:51:06,771 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:51:07,053 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:51:07,149 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:51:07,149 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 124
[2020-10-29 08:51:07,150 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-29 08:51:07,150 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 475
[2020-10-29 08:51:07,150 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:51:07,150 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:51:07,151 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 08:51:07,151 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 08:51:07,151 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 124
[2020-10-29 08:51:07,151 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 08:51:07,300 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 08:51:07,300 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823976887]
[2020-10-29 08:51:07,301 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 08:51:07,301 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-29 08:51:07,301 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661224487]
[2020-10-29 08:51:07,302 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-29 08:51:07,303 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 08:51:07,303 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-29 08:51:07,303 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-29 08:51:07,304 INFO  L87              Difference]: Start difference. First operand 12372 states and 16448 transitions. Second operand 7 states.
[2020-10-29 08:51:07,458 WARN  L193               SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-10-29 08:52:27,670 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 08:52:27,670 INFO  L93              Difference]: Finished difference Result 37667 states and 52084 transitions.
[2020-10-29 08:52:27,674 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-29 08:52:27,675 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 159
[2020-10-29 08:52:27,676 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 08:52:27,799 INFO  L225             Difference]: With dead ends: 37667
[2020-10-29 08:52:27,799 INFO  L226             Difference]: Without dead ends: 25301
[2020-10-29 08:52:27,839 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-29 08:52:27,880 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25301 states.
[2020-10-29 08:52:28,508 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25301 to 24840.
[2020-10-29 08:52:28,508 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24840 states.
[2020-10-29 08:52:28,576 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24840 states to 24840 states and 31450 transitions.
[2020-10-29 08:52:28,577 INFO  L78                 Accepts]: Start accepts. Automaton has 24840 states and 31450 transitions. Word has length 159
[2020-10-29 08:52:28,578 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 08:52:28,579 INFO  L481      AbstractCegarLoop]: Abstraction has 24840 states and 31450 transitions.
[2020-10-29 08:52:28,579 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-29 08:52:28,579 INFO  L276                IsEmpty]: Start isEmpty. Operand 24840 states and 31450 transitions.
[2020-10-29 08:52:28,584 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 232
[2020-10-29 08:52:28,584 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 08:52:28,587 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, 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]
[2020-10-29 08:52:28,587 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-29 08:52:28,588 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 08:52:28,588 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 08:52:28,589 INFO  L82        PathProgramCache]: Analyzing trace with hash 363533780, now seen corresponding path program 1 times
[2020-10-29 08:52:28,589 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 08:52:28,589 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004197501]
[2020-10-29 08:52:28,589 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 08:52:28,634 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:52:28,664 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:52:28,769 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:52:30,046 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:52:30,322 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:52:30,814 FATAL L256   erpolLogProxyWrapper]: Now shrinking...