/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_label08.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-29 08:44:20,663 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-29 08:44:20,668 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-29 08:44:20,728 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-29 08:44:20,729 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-29 08:44:20,737 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-29 08:44:20,739 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-29 08:44:20,744 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-29 08:44:20,764 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-29 08:44:20,771 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-29 08:44:20,772 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-29 08:44:20,774 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-29 08:44:20,775 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-29 08:44:20,779 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-29 08:44:20,781 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-29 08:44:20,783 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-29 08:44:20,785 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-29 08:44:20,788 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-29 08:44:20,796 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-29 08:44:20,805 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-29 08:44:20,807 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-29 08:44:20,809 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-29 08:44:20,811 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-29 08:44:20,813 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-29 08:44:20,823 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-29 08:44:20,823 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-29 08:44:20,824 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-29 08:44:20,826 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-29 08:44:20,827 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-29 08:44:20,828 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-29 08:44:20,828 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-29 08:44:20,829 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-29 08:44:20,832 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-29 08:44:20,833 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-29 08:44:20,834 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-29 08:44:20,834 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-29 08:44:20,835 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-29 08:44:20,836 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-29 08:44:20,836 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-10-29 08:44:20,838 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-29 08:44:20,847 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 08:44:20,893 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-29 08:44:20,893 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-29 08:44:20,898 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-29 08:44:20,898 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-29 08:44:20,899 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-29 08:44:20,899 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-29 08:44:20,899 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-29 08:44:20,899 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-29 08:44:20,899 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-29 08:44:20,900 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-29 08:44:20,901 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-29 08:44:20,901 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-29 08:44:20,901 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-29 08:44:20,902 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-29 08:44:20,902 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-29 08:44:20,902 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-29 08:44:20,902 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-29 08:44:20,903 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-29 08:44:20,903 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-29 08:44:20,903 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-29 08:44:20,903 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-29 08:44:20,903 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-29 08:44:20,904 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-29 08:44:20,904 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-29 08:44:20,904 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-29 08:44:20,904 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-29 08:44:20,904 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-29 08:44:20,905 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-29 08:44:20,905 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-29 08:44:20,905 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true;
[2020-10-29 08:44:21,389 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-29 08:44:21,430 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-29 08:44:21,433 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-29 08:44:21,434 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-29 08:44:21,436 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-29 08:44:21,437 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label08.c
[2020-10-29 08:44:21,522 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8712b02d/8a143b6d4ff94ae9b058581fd547fd81/FLAG88b4ad387
[2020-10-29 08:44:22,825 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-29 08:44:22,826 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label08.c
[2020-10-29 08:44:22,899 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8712b02d/8a143b6d4ff94ae9b058581fd547fd81/FLAG88b4ad387
[2020-10-29 08:44:23,013 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8712b02d/8a143b6d4ff94ae9b058581fd547fd81
[2020-10-29 08:44:23,017 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-29 08:44:23,026 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-29 08:44:23,030 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-29 08:44:23,030 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-29 08:44:23,035 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-29 08:44:23,036 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:44:23" (1/1) ...
[2020-10-29 08:44:23,042 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c8b233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:23, skipping insertion in model container
[2020-10-29 08:44:23,042 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:44:23" (1/1) ...
[2020-10-29 08:44:23,051 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-29 08:44:23,298 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-29 08:44:25,337 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 08:44:25,354 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-29 08:44:26,610 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 08:44:26,674 INFO  L208         MainTranslator]: Completed translation
[2020-10-29 08:44:26,675 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:26 WrapperNode
[2020-10-29 08:44:26,675 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-29 08:44:26,677 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-29 08:44:26,677 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-29 08:44:26,677 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-29 08:44:26,691 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:26" (1/1) ...
[2020-10-29 08:44:26,693 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:26" (1/1) ...
[2020-10-29 08:44:26,879 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:26" (1/1) ...
[2020-10-29 08:44:26,879 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:26" (1/1) ...
[2020-10-29 08:44:27,231 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:26" (1/1) ...
[2020-10-29 08:44:27,272 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:26" (1/1) ...
[2020-10-29 08:44:27,326 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:26" (1/1) ...
[2020-10-29 08:44:27,402 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-29 08:44:27,404 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-29 08:44:27,404 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-29 08:44:27,404 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-29 08:44:27,406 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:26" (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 08:44:27,599 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-29 08:44:27,600 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-29 08:44:27,600 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-29 08:44:27,600 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-29 08:44:27,600 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-29 08:44:27,600 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-29 08:44:27,601 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-29 08:44:27,601 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-29 08:44:27,601 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-29 08:44:27,601 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-29 08:44:27,601 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-29 08:44:27,601 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-29 08:44:27,602 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-29 08:44:27,602 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-29 08:44:27,602 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-29 08:44:27,602 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-29 08:44:27,602 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-29 08:44:27,602 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-29 08:44:27,603 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-29 08:44:27,603 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-29 08:44:27,603 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-29 08:44:27,603 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-29 08:44:27,603 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-29 08:44:27,603 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-29 08:44:27,603 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-29 08:44:27,604 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-29 08:44:27,604 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-29 08:44:27,604 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-29 08:44:27,604 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-29 08:44:44,063 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-29 08:44:44,063 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-29 08:44:44,070 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:44:44 BoogieIcfgContainer
[2020-10-29 08:44:44,070 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-29 08:44:44,072 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-29 08:44:44,072 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-29 08:44:44,077 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-29 08:44:44,077 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:44:23" (1/3) ...
[2020-10-29 08:44:44,078 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f60b5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:44:44, skipping insertion in model container
[2020-10-29 08:44:44,078 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:26" (2/3) ...
[2020-10-29 08:44:44,078 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f60b5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:44:44, skipping insertion in model container
[2020-10-29 08:44:44,079 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:44:44" (3/3) ...
[2020-10-29 08:44:44,080 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem19_label08.c
[2020-10-29 08:44:44,093 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-29 08:44:44,104 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-29 08:44:44,118 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-29 08:44:44,160 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-29 08:44:44,161 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-29 08:44:44,161 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-29 08:44:44,161 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-29 08:44:44,161 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-29 08:44:44,161 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-29 08:44:44,161 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-29 08:44:44,162 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-29 08:44:44,212 INFO  L276                IsEmpty]: Start isEmpty. Operand 1781 states.
[2020-10-29 08:44:44,220 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2020-10-29 08:44:44,220 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 08:44:44,221 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]
[2020-10-29 08:44:44,222 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 08:44:44,237 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 08:44:44,238 INFO  L82        PathProgramCache]: Analyzing trace with hash 616300453, now seen corresponding path program 1 times
[2020-10-29 08:44:44,248 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 08:44:44,249 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853381276]
[2020-10-29 08:44:44,249 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 08:44:44,508 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:44:44,621 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:44:45,100 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:44:45,100 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 54
[2020-10-29 08:44:45,100 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:44:45,101 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 586
[2020-10-29 08:44:45,103 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:44:45,103 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:44:45,104 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-29 08:44:45,104 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 08:44:45,104 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 45
[2020-10-29 08:44:45,104 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-29 08:44:45,267 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 08:44:45,281 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:44:45,288 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:44:45,312 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:44:45,313 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 08:44:45,313 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:44:45,313 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 30
[2020-10-29 08:44:45,314 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:44:45,314 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:44:45,314 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 08:44:45,314 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 08:44:45,315 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 08:44:45,315 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 08:44:45,347 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 08:44:45,348 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853381276]
[2020-10-29 08:44:45,350 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 08:44:45,350 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-29 08:44:45,351 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806066978]
[2020-10-29 08:44:45,357 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-29 08:44:45,357 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 08:44:45,372 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-29 08:44:45,373 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-29 08:44:45,376 INFO  L87              Difference]: Start difference. First operand 1781 states. Second operand 5 states.
[2020-10-29 08:45:22,472 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 08:45:22,477 INFO  L93              Difference]: Finished difference Result 6578 states and 12495 transitions.
[2020-10-29 08:45:22,478 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-29 08:45:22,480 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 44
[2020-10-29 08:45:22,480 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 08:45:22,534 INFO  L225             Difference]: With dead ends: 6578
[2020-10-29 08:45:22,534 INFO  L226             Difference]: Without dead ends: 4729
[2020-10-29 08:45:22,552 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-29 08:45:22,582 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4729 states.
[2020-10-29 08:45:22,811 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4626.
[2020-10-29 08:45:22,812 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4626 states.
[2020-10-29 08:45:22,847 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 8167 transitions.
[2020-10-29 08:45:22,850 INFO  L78                 Accepts]: Start accepts. Automaton has 4626 states and 8167 transitions. Word has length 44
[2020-10-29 08:45:22,851 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 08:45:22,852 INFO  L481      AbstractCegarLoop]: Abstraction has 4626 states and 8167 transitions.
[2020-10-29 08:45:22,852 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-29 08:45:22,852 INFO  L276                IsEmpty]: Start isEmpty. Operand 4626 states and 8167 transitions.
[2020-10-29 08:45:22,868 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2020-10-29 08:45:22,869 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 08:45:22,870 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-10-29 08:45:22,871 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-29 08:45:22,871 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 08:45:22,872 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 08:45:22,872 INFO  L82        PathProgramCache]: Analyzing trace with hash -2043556932, now seen corresponding path program 1 times
[2020-10-29 08:45:22,873 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 08:45:22,873 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43452688]
[2020-10-29 08:45:22,875 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 08:45:22,959 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:45:23,000 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:45:23,423 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:45:24,175 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:45:24,516 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:45:24,516 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 131
[2020-10-29 08:45:24,517 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-29 08:45:24,590 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1554
[2020-10-29 08:45:24,591 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:45:24,592 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:45:24,592 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-29 08:45:24,592 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 08:45:24,592 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 122
[2020-10-29 08:45:24,592 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 08:45:24,722 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 08:45:24,729 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:45:24,733 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:45:24,750 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:45:24,751 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 08:45:24,751 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:45:24,751 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-29 08:45:24,751 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:45:24,751 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:45:24,752 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 08:45:24,752 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 08:45:24,752 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 08:45:24,752 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 08:45:24,789 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 08:45:24,815 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:45:24,835 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:45:25,034 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:45:25,066 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:45:25,067 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-10-29 08:45:25,067 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 08:45:25,067 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 250
[2020-10-29 08:45:25,067 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:45:25,068 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:45:25,068 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 08:45:25,068 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 08:45:25,068 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 76
[2020-10-29 08:45:25,068 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 08:45:25,185 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-10-29 08:45:25,185 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43452688]
[2020-10-29 08:45:25,186 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 08:45:25,186 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-29 08:45:25,186 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162046229]
[2020-10-29 08:45:25,189 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-29 08:45:25,189 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 08:45:25,190 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-29 08:45:25,191 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-29 08:45:25,191 INFO  L87              Difference]: Start difference. First operand 4626 states and 8167 transitions. Second operand 7 states.
[2020-10-29 08:46:06,831 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 08:46:06,831 INFO  L93              Difference]: Finished difference Result 13757 states and 24643 transitions.
[2020-10-29 08:46:06,833 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-29 08:46:06,833 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 119
[2020-10-29 08:46:06,834 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 08:46:06,896 INFO  L225             Difference]: With dead ends: 13757
[2020-10-29 08:46:06,896 INFO  L226             Difference]: Without dead ends: 9137
[2020-10-29 08:46:06,915 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-29 08:46:06,929 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9137 states.
[2020-10-29 08:46:07,242 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9137 to 8969.
[2020-10-29 08:46:07,243 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8969 states.
[2020-10-29 08:46:07,289 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8969 states to 8969 states and 13524 transitions.
[2020-10-29 08:46:07,290 INFO  L78                 Accepts]: Start accepts. Automaton has 8969 states and 13524 transitions. Word has length 119
[2020-10-29 08:46:07,292 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 08:46:07,293 INFO  L481      AbstractCegarLoop]: Abstraction has 8969 states and 13524 transitions.
[2020-10-29 08:46:07,293 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-29 08:46:07,293 INFO  L276                IsEmpty]: Start isEmpty. Operand 8969 states and 13524 transitions.
[2020-10-29 08:46:07,299 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 126
[2020-10-29 08:46:07,299 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 08:46:07,299 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-10-29 08:46:07,300 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-29 08:46:07,300 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 08:46:07,302 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 08:46:07,302 INFO  L82        PathProgramCache]: Analyzing trace with hash -1982758960, now seen corresponding path program 1 times
[2020-10-29 08:46:07,304 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 08:46:07,305 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448597822]
[2020-10-29 08:46:07,305 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 08:46:07,361 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:46:07,392 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:46:07,839 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:46:07,839 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 137
[2020-10-29 08:46:07,839 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:46:07,840 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 475
[2020-10-29 08:46:07,840 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:46:07,841 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:46:07,841 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-29 08:46:07,841 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 08:46:07,841 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 87
[2020-10-29 08:46:07,842 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 08:46:08,021 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 08:46:08,033 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:46:08,039 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:46:08,061 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:46:08,062 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 08:46:08,062 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:46:08,062 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 27
[2020-10-29 08:46:08,062 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:46:08,062 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:46:08,062 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 08:46:08,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 08:46:08,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 08:46:08,063 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 08:46:08,098 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 08:46:08,130 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:46:08,150 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:46:08,320 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:46:08,321 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 82
[2020-10-29 08:46:08,321 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:46:08,321 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 187
[2020-10-29 08:46:08,321 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:46:08,321 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:46:08,322 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 08:46:08,322 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 08:46:08,322 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 82
[2020-10-29 08:46:08,322 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 08:46:08,551 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 08:46:08,552 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448597822]
[2020-10-29 08:46:08,552 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 08:46:08,553 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-29 08:46:08,553 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869083462]
[2020-10-29 08:46:08,554 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-29 08:46:08,554 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 08:46:08,555 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-29 08:46:08,555 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-29 08:46:08,555 INFO  L87              Difference]: Start difference. First operand 8969 states and 13524 transitions. Second operand 7 states.
[2020-10-29 08:47:06,676 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 08:47:06,676 INFO  L93              Difference]: Finished difference Result 27221 states and 41907 transitions.
[2020-10-29 08:47:06,678 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-29 08:47:06,679 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 125
[2020-10-29 08:47:06,679 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 08:47:06,782 INFO  L225             Difference]: With dead ends: 27221
[2020-10-29 08:47:06,782 INFO  L226             Difference]: Without dead ends: 18258
[2020-10-29 08:47:06,813 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 08:47:06,836 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18258 states.
[2020-10-29 08:47:07,288 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18258 to 17954.
[2020-10-29 08:47:07,289 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 17954 states.
[2020-10-29 08:47:07,477 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17954 states to 17954 states and 26457 transitions.
[2020-10-29 08:47:07,477 INFO  L78                 Accepts]: Start accepts. Automaton has 17954 states and 26457 transitions. Word has length 125
[2020-10-29 08:47:07,480 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 08:47:07,480 INFO  L481      AbstractCegarLoop]: Abstraction has 17954 states and 26457 transitions.
[2020-10-29 08:47:07,480 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-29 08:47:07,481 INFO  L276                IsEmpty]: Start isEmpty. Operand 17954 states and 26457 transitions.
[2020-10-29 08:47:07,491 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 221
[2020-10-29 08:47:07,492 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 08:47:07,492 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:47:07,497 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-29 08:47:07,498 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 08:47:07,501 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 08:47:07,502 INFO  L82        PathProgramCache]: Analyzing trace with hash 1075686983, now seen corresponding path program 1 times
[2020-10-29 08:47:07,502 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 08:47:07,502 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992596080]
[2020-10-29 08:47:07,502 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 08:47:07,565 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:47:07,632 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:47:07,785 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:47:07,996 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:47:09,550 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:47:12,589 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:47:12,589 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 234
[2020-10-29 08:47:12,589 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-29 08:47:12,590 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5018
[2020-10-29 08:47:12,590 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:47:12,590 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:47:12,590 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 08:47:12,590 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 111
[2020-10-29 08:47:12,590 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 78
[2020-10-29 08:47:12,590 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 08:47:12,747 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 08:47:12,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:47:12,753 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:47:12,759 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:47:12,759 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 08:47:12,760 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:47:12,760 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-29 08:47:12,760 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:47:12,760 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:47:12,760 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 08:47:12,761 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 08:47:12,761 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 08:47:12,761 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 08:47:12,818 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 08:47:12,851 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:47:12,873 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:47:12,982 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:47:12,982 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 102
[2020-10-29 08:47:12,982 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:47:12,983 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 129
[2020-10-29 08:47:12,983 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:47:12,983 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:47:12,983 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 08:47:12,984 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 08:47:12,984 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 96
[2020-10-29 08:47:12,984 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 08:47:13,033 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2020-10-29 08:47:13,064 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:47:13,082 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:47:13,236 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 08:47:13,237 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-10-29 08:47:13,237 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 08:47:13,237 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 171
[2020-10-29 08:47:13,237 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 08:47:13,238 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 08:47:13,238 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 08:47:13,238 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 08:47:13,238 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 76
[2020-10-29 08:47:13,238 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 08:47:13,383 INFO  L134       CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-29 08:47:13,384 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992596080]
[2020-10-29 08:47:13,384 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 08:47:13,384 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-29 08:47:13,385 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767542371]
[2020-10-29 08:47:13,386 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-29 08:47:13,386 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 08:47:13,387 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-29 08:47:13,387 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-29 08:47:13,387 INFO  L87              Difference]: Start difference. First operand 17954 states and 26457 transitions. Second operand 7 states.
[2020-10-29 08:47:14,653 WARN  L193               SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66
[2020-10-29 08:48:20,354 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 08:48:20,355 INFO  L93              Difference]: Finished difference Result 45155 states and 70266 transitions.
[2020-10-29 08:48:20,358 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-29 08:48:20,358 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 220
[2020-10-29 08:48:20,361 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 08:48:20,503 INFO  L225             Difference]: With dead ends: 45155
[2020-10-29 08:48:20,504 INFO  L226             Difference]: Without dead ends: 27207
[2020-10-29 08:48:20,556 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-29 08:48:20,600 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27207 states.
[2020-10-29 08:48:21,256 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27207 to 27003.
[2020-10-29 08:48:21,256 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 27003 states.
[2020-10-29 08:48:21,336 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27003 states to 27003 states and 37839 transitions.
[2020-10-29 08:48:21,337 INFO  L78                 Accepts]: Start accepts. Automaton has 27003 states and 37839 transitions. Word has length 220
[2020-10-29 08:48:21,338 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 08:48:21,338 INFO  L481      AbstractCegarLoop]: Abstraction has 27003 states and 37839 transitions.
[2020-10-29 08:48:21,338 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-29 08:48:21,338 INFO  L276                IsEmpty]: Start isEmpty. Operand 27003 states and 37839 transitions.
[2020-10-29 08:48:21,344 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 231
[2020-10-29 08:48:21,345 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 08:48:21,346 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:48:21,346 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-29 08:48:21,346 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 08:48:21,347 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 08:48:21,347 INFO  L82        PathProgramCache]: Analyzing trace with hash -1851547653, now seen corresponding path program 1 times
[2020-10-29 08:48:21,347 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 08:48:21,347 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207744815]
[2020-10-29 08:48:21,348 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 08:48:21,397 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 08:48:21,430 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:48:21,587 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 08:48:22,877 FATAL L256   erpolLogProxyWrapper]: Now shrinking...