/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label06.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-28 10:39:43,823 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-28 10:39:43,828 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-28 10:39:43,880 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-28 10:39:43,881 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-28 10:39:43,888 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-28 10:39:43,890 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-28 10:39:43,894 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-28 10:39:43,897 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-28 10:39:43,903 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-28 10:39:43,905 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-28 10:39:43,906 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-28 10:39:43,906 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-28 10:39:43,909 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-28 10:39:43,911 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-28 10:39:43,914 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-28 10:39:43,915 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-28 10:39:43,918 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-28 10:39:43,925 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-28 10:39:43,932 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-28 10:39:43,934 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-28 10:39:43,936 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-28 10:39:43,937 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-28 10:39:43,940 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-28 10:39:43,948 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-28 10:39:43,949 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-28 10:39:43,949 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-28 10:39:43,951 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-28 10:39:43,952 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-28 10:39:43,953 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-28 10:39:43,953 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-28 10:39:43,954 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-28 10:39:43,956 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-28 10:39:43,957 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-28 10:39:43,958 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-28 10:39:43,958 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-28 10:39:43,959 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-28 10:39:43,959 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-28 10:39:43,959 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-28 10:39:43,960 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-28 10:39:43,961 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-28 10:39:43,968 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
[2020-10-28 10:39:44,020 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-28 10:39:44,020 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-28 10:39:44,022 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-28 10:39:44,022 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-28 10:39:44,022 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-28 10:39:44,022 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-28 10:39:44,023 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-28 10:39:44,023 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-28 10:39:44,028 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-28 10:39:44,028 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-28 10:39:44,029 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-28 10:39:44,029 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-28 10:39:44,029 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-28 10:39:44,029 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-28 10:39:44,029 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-28 10:39:44,029 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-28 10:39:44,030 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-28 10:39:44,030 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-28 10:39:44,030 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-28 10:39:44,030 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-28 10:39:44,030 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-28 10:39:44,031 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-28 10:39:44,031 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-28 10:39:44,036 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-28 10:39:44,037 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-28 10:39:44,037 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-28 10:39:44,037 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-28 10:39:44,037 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-28 10:39:44,037 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-28 10:39:44,037 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true;
[2020-10-28 10:39:44,445 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-28 10:39:44,474 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-28 10:39:44,477 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-28 10:39:44,479 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-28 10:39:44,479 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-28 10:39:44,483 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label06.c
[2020-10-28 10:39:44,562 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5e365a78/3f98fd54d4a1401fae764a300c7a931c/FLAG1e8bf81c2
[2020-10-28 10:39:45,739 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-28 10:39:45,740 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label06.c
[2020-10-28 10:39:45,786 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5e365a78/3f98fd54d4a1401fae764a300c7a931c/FLAG1e8bf81c2
[2020-10-28 10:39:45,975 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5e365a78/3f98fd54d4a1401fae764a300c7a931c
[2020-10-28 10:39:45,980 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-28 10:39:45,989 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-28 10:39:45,991 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-28 10:39:45,992 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-28 10:39:45,996 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-28 10:39:45,997 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:39:45" (1/1) ...
[2020-10-28 10:39:46,002 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebb2c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:45, skipping insertion in model container
[2020-10-28 10:39:46,002 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:39:45" (1/1) ...
[2020-10-28 10:39:46,012 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-28 10:39:46,276 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-28 10:39:48,648 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:39:48,666 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-28 10:39:49,881 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:39:50,029 INFO  L208         MainTranslator]: Completed translation
[2020-10-28 10:39:50,030 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:50 WrapperNode
[2020-10-28 10:39:50,030 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-28 10:39:50,031 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-28 10:39:50,031 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-28 10:39:50,032 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-28 10:39:50,046 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:50" (1/1) ...
[2020-10-28 10:39:50,048 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:50" (1/1) ...
[2020-10-28 10:39:50,213 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:50" (1/1) ...
[2020-10-28 10:39:50,213 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:50" (1/1) ...
[2020-10-28 10:39:50,527 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:50" (1/1) ...
[2020-10-28 10:39:50,587 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:50" (1/1) ...
[2020-10-28 10:39:50,642 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:50" (1/1) ...
[2020-10-28 10:39:50,774 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-28 10:39:50,775 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-28 10:39:50,775 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-28 10:39:50,777 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-28 10:39:50,778 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:50" (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
[2020-10-28 10:39:50,860 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-28 10:39:50,861 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-28 10:39:50,861 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-28 10:39:50,862 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-28 10:39:50,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-28 10:39:50,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-28 10:39:50,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-28 10:39:50,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-28 10:39:50,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-28 10:39:50,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-28 10:39:50,864 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-28 10:39:50,865 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-28 10:39:50,865 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-28 10:39:50,865 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-28 10:39:50,866 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-28 10:39:50,866 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-28 10:39:50,867 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-28 10:39:50,867 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-28 10:39:50,867 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-28 10:39:50,867 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-28 10:39:50,868 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-28 10:39:50,868 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-28 10:39:50,869 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-28 10:39:50,869 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-28 10:39:50,869 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-28 10:39:50,869 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-28 10:39:50,869 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-28 10:39:50,869 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-28 10:39:50,870 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-28 10:39:50,870 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-28 10:39:50,870 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-28 10:39:50,870 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-28 10:39:50,870 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-28 10:40:01,075 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-28 10:40:01,076 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-28 10:40:01,082 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:40:01 BoogieIcfgContainer
[2020-10-28 10:40:01,082 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-28 10:40:01,088 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-28 10:40:01,088 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-28 10:40:01,091 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-28 10:40:01,092 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:39:45" (1/3) ...
[2020-10-28 10:40:01,093 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee3978a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:40:01, skipping insertion in model container
[2020-10-28 10:40:01,093 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:50" (2/3) ...
[2020-10-28 10:40:01,094 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee3978a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:40:01, skipping insertion in model container
[2020-10-28 10:40:01,094 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:40:01" (3/3) ...
[2020-10-28 10:40:01,096 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label06.c
[2020-10-28 10:40:01,108 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-28 10:40:01,119 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-28 10:40:01,130 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-28 10:40:01,168 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-28 10:40:01,169 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-28 10:40:01,169 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-28 10:40:01,169 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-28 10:40:01,169 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-28 10:40:01,169 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-28 10:40:01,170 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-28 10:40:01,170 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-28 10:40:01,238 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-28 10:40:01,405 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1692
[2020-10-28 10:40:01,406 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:40:01,409 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:40:01,410 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:40:01,424 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:40:01,426 INFO  L82        PathProgramCache]: Analyzing trace with hash -1924616607, now seen corresponding path program 1 times
[2020-10-28 10:40:01,436 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:40:01,436 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000268004]
[2020-10-28 10:40:01,437 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:40:02,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:40:03,320 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:40:07,585 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:40:07,585 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1715
[2020-10-28 10:40:07,585 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:40:07,586 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5020
[2020-10-28 10:40:07,588 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:40:07,589 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:40:07,589 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-28 10:40:07,589 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:40:07,589 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1706
[2020-10-28 10:40:07,590 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-28 10:40:09,147 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:40:09,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:40:09,177 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:40:09,202 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:40:09,202 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:40:09,203 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:40:09,203 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 30
[2020-10-28 10:40:09,203 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:40:09,203 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:40:09,203 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:40:09,204 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:40:09,204 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:40:09,204 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:40:12,879 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:40:12,880 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000268004]
[2020-10-28 10:40:12,886 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:40:12,886 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-28 10:40:12,887 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829545499]
[2020-10-28 10:40:12,896 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-28 10:40:12,897 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:40:12,910 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-28 10:40:12,911 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-28 10:40:12,913 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 5 states.
[2020-10-28 10:40:47,410 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:40:47,410 INFO  L93              Difference]: Finished difference Result 8269 states and 15670 transitions.
[2020-10-28 10:40:47,413 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-28 10:40:47,415 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1691
[2020-10-28 10:40:47,422 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:40:47,484 INFO  L225             Difference]: With dead ends: 8269
[2020-10-28 10:40:47,484 INFO  L226             Difference]: Without dead ends: 5975
[2020-10-28 10:40:47,498 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:40:47,530 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5975 states.
[2020-10-28 10:40:47,798 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5975 to 5839.
[2020-10-28 10:40:47,800 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5839 states.
[2020-10-28 10:40:47,841 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5839 states to 5839 states and 10172 transitions.
[2020-10-28 10:40:47,843 INFO  L78                 Accepts]: Start accepts. Automaton has 5839 states and 10172 transitions. Word has length 1691
[2020-10-28 10:40:47,850 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:40:47,851 INFO  L481      AbstractCegarLoop]: Abstraction has 5839 states and 10172 transitions.
[2020-10-28 10:40:47,851 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-28 10:40:47,852 INFO  L276                IsEmpty]: Start isEmpty. Operand 5839 states and 10172 transitions.
[2020-10-28 10:40:48,010 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1704
[2020-10-28 10:40:48,010 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:40:48,012 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:40:48,012 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-28 10:40:48,013 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:40:48,013 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:40:48,014 INFO  L82        PathProgramCache]: Analyzing trace with hash 21057893, now seen corresponding path program 1 times
[2020-10-28 10:40:48,014 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:40:48,015 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564475366]
[2020-10-28 10:40:48,015 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:40:48,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:40:48,201 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:40:48,580 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:40:53,386 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:40:53,387 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1729
[2020-10-28 10:40:53,387 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:40:53,387 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5212
[2020-10-28 10:40:53,388 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:40:53,389 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:40:53,390 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:40:53,390 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:40:53,391 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-10-28 10:40:53,391 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-28 10:40:54,511 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:40:54,522 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:40:54,526 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:40:54,540 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:40:54,540 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:40:54,540 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:40:54,540 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-10-28 10:40:54,541 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:40:54,541 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:40:54,541 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:40:54,541 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:40:54,541 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:40:54,542 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:40:54,569 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:40:54,573 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:40:54,575 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:40:54,599 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:40:54,599 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-28 10:40:54,599 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:40:54,599 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 25
[2020-10-28 10:40:54,600 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:40:54,600 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:40:54,600 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:40:54,600 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:40:54,600 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-10-28 10:40:54,601 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:40:56,258 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:40:56,259 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564475366]
[2020-10-28 10:40:56,259 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:40:56,259 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:40:56,260 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807954359]
[2020-10-28 10:40:56,264 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:40:56,264 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:40:56,265 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:40:56,265 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:40:56,265 INFO  L87              Difference]: Start difference. First operand 5839 states and 10172 transitions. Second operand 7 states.
[2020-10-28 10:41:26,709 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:41:26,709 INFO  L93              Difference]: Finished difference Result 17180 states and 30433 transitions.
[2020-10-28 10:41:26,711 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-28 10:41:26,711 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1703
[2020-10-28 10:41:26,711 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:41:26,782 INFO  L225             Difference]: With dead ends: 17180
[2020-10-28 10:41:26,782 INFO  L226             Difference]: Without dead ends: 11347
[2020-10-28 10:41:26,801 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-28 10:41:26,816 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11347 states.
[2020-10-28 10:41:27,147 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11347 to 11252.
[2020-10-28 10:41:27,148 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11252 states.
[2020-10-28 10:41:27,181 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11252 states to 11252 states and 17661 transitions.
[2020-10-28 10:41:27,181 INFO  L78                 Accepts]: Start accepts. Automaton has 11252 states and 17661 transitions. Word has length 1703
[2020-10-28 10:41:27,182 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:41:27,182 INFO  L481      AbstractCegarLoop]: Abstraction has 11252 states and 17661 transitions.
[2020-10-28 10:41:27,182 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:41:27,182 INFO  L276                IsEmpty]: Start isEmpty. Operand 11252 states and 17661 transitions.
[2020-10-28 10:41:27,355 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1733
[2020-10-28 10:41:27,355 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:41:27,357 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:41:27,357 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-28 10:41:27,357 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:41:27,359 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:41:27,360 INFO  L82        PathProgramCache]: Analyzing trace with hash -704761621, now seen corresponding path program 1 times
[2020-10-28 10:41:27,360 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:41:27,360 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940926973]
[2020-10-28 10:41:27,361 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:41:27,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:41:27,529 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:41:27,842 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:41:32,596 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:41:32,596 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1760
[2020-10-28 10:41:32,596 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:41:32,597 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5099
[2020-10-28 10:41:32,597 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:41:32,597 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:41:32,597 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:41:32,598 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:41:32,598 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-10-28 10:41:32,598 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:41:33,135 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:41:33,140 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:41:33,144 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:41:33,155 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:41:33,155 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:41:33,156 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:41:33,156 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-28 10:41:33,156 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:41:33,156 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:41:33,156 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:41:33,157 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:41:33,157 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:41:33,157 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:41:33,184 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:41:33,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:41:33,200 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:41:33,253 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:41:33,253 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-28 10:41:33,253 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:41:33,254 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 58
[2020-10-28 10:41:33,254 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:41:33,254 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:41:33,254 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:41:33,254 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:41:33,255 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 33
[2020-10-28 10:41:33,255 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:41:33,285 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-10-28 10:41:33,289 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:41:33,291 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:41:33,294 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:41:33,295 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-28 10:41:33,295 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:41:33,295 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-28 10:41:33,295 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:41:33,296 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:41:33,296 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:41:33,296 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 7
[2020-10-28 10:41:33,296 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:41:33,296 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:41:34,745 INFO  L134       CoverageAnalysis]: Checked inductivity of 44 backedges. 35 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-10-28 10:41:34,746 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940926973]
[2020-10-28 10:41:34,746 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-28 10:41:34,746 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-28 10:41:34,747 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904270084]
[2020-10-28 10:41:34,749 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:41:34,750 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:41:34,750 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:41:34,751 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:41:34,751 INFO  L87              Difference]: Start difference. First operand 11252 states and 17661 transitions. Second operand 7 states.
[2020-10-28 10:42:04,361 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:42:04,361 INFO  L93              Difference]: Finished difference Result 28033 states and 43627 transitions.
[2020-10-28 10:42:04,363 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-28 10:42:04,363 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1732
[2020-10-28 10:42:04,364 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:42:04,431 INFO  L225             Difference]: With dead ends: 28033
[2020-10-28 10:42:04,431 INFO  L226             Difference]: Without dead ends: 16787
[2020-10-28 10:42:04,465 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-28 10:42:04,486 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16787 states.
[2020-10-28 10:42:04,892 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16787 to 16698.
[2020-10-28 10:42:04,892 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16698 states.
[2020-10-28 10:42:04,930 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16698 states to 16698 states and 22964 transitions.
[2020-10-28 10:42:04,931 INFO  L78                 Accepts]: Start accepts. Automaton has 16698 states and 22964 transitions. Word has length 1732
[2020-10-28 10:42:04,931 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:42:04,932 INFO  L481      AbstractCegarLoop]: Abstraction has 16698 states and 22964 transitions.
[2020-10-28 10:42:04,932 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:42:04,932 INFO  L276                IsEmpty]: Start isEmpty. Operand 16698 states and 22964 transitions.
[2020-10-28 10:42:05,008 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1732
[2020-10-28 10:42:05,008 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:42:05,010 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:42:05,010 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-28 10:42:05,010 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:42:05,011 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:42:05,011 INFO  L82        PathProgramCache]: Analyzing trace with hash 1872463602, now seen corresponding path program 1 times
[2020-10-28 10:42:05,012 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:42:05,012 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502214337]
[2020-10-28 10:42:05,012 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:42:05,148 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:42:05,181 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:42:05,786 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:42:10,183 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:42:10,183 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1757
[2020-10-28 10:42:10,184 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:42:10,184 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5031
[2020-10-28 10:42:10,184 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:42:10,184 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:42:10,184 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:42:10,185 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:42:10,185 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-10-28 10:42:10,185 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:42:10,842 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:42:10,846 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:42:10,850 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:42:10,860 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:42:10,861 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:42:10,861 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:42:10,861 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-28 10:42:10,865 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:42:10,866 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:42:10,866 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:42:10,866 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:42:10,866 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:42:10,867 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:42:10,891 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:42:10,900 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:42:10,907 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:42:10,969 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:42:10,969 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-28 10:42:10,970 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:42:10,970 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 68
[2020-10-28 10:42:10,970 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:42:10,970 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:42:10,970 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:42:10,970 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:42:10,971 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-10-28 10:42:10,971 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:42:12,308 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:42:12,308 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502214337]
[2020-10-28 10:42:12,308 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:42:12,308 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:42:12,309 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062874128]
[2020-10-28 10:42:12,310 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:42:12,311 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:42:12,311 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:42:12,311 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:42:12,312 INFO  L87              Difference]: Start difference. First operand 16698 states and 22964 transitions. Second operand 7 states.
[2020-10-28 10:42:41,389 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:42:41,390 INFO  L93              Difference]: Finished difference Result 50883 states and 73831 transitions.
[2020-10-28 10:42:41,391 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-28 10:42:41,391 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1731
[2020-10-28 10:42:41,392 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:42:41,531 INFO  L225             Difference]: With dead ends: 50883
[2020-10-28 10:42:41,531 INFO  L226             Difference]: Without dead ends: 34191
[2020-10-28 10:42:41,578 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
[2020-10-28 10:42:41,620 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34191 states.
[2020-10-28 10:42:42,412 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34191 to 33687.
[2020-10-28 10:42:42,412 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 33687 states.
[2020-10-28 10:42:42,494 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33687 states to 33687 states and 46193 transitions.
[2020-10-28 10:42:42,494 INFO  L78                 Accepts]: Start accepts. Automaton has 33687 states and 46193 transitions. Word has length 1731
[2020-10-28 10:42:42,495 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:42:42,495 INFO  L481      AbstractCegarLoop]: Abstraction has 33687 states and 46193 transitions.
[2020-10-28 10:42:42,495 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:42:42,495 INFO  L276                IsEmpty]: Start isEmpty. Operand 33687 states and 46193 transitions.
[2020-10-28 10:42:42,887 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1766
[2020-10-28 10:42:42,887 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:42:42,888 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:42:42,889 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-28 10:42:42,889 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:42:42,890 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:42:42,890 INFO  L82        PathProgramCache]: Analyzing trace with hash 919715389, now seen corresponding path program 1 times
[2020-10-28 10:42:42,891 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:42:42,891 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58343175]
[2020-10-28 10:42:42,892 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:42:43,032 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:42:43,074 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:42:45,068 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:42:48,144 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:42:48,144 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1791
[2020-10-28 10:42:48,144 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:42:48,144 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5105
[2020-10-28 10:42:48,145 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:42:48,145 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:42:48,145 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:42:48,145 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:42:48,145 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 80
[2020-10-28 10:42:48,145 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:42:48,550 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:42:48,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:42:48,557 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:42:48,567 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:42:48,567 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:42:48,567 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:42:48,567 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-10-28 10:42:48,568 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:42:48,568 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:42:48,568 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:42:48,568 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:42:48,568 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:42:48,568 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:42:48,593 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:42:48,610 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:42:48,622 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:42:48,775 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:42:48,775 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 75
[2020-10-28 10:42:48,775 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:42:48,776 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 163
[2020-10-28 10:42:48,776 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:42:48,776 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:42:48,776 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:42:48,776 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:42:48,776 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-10-28 10:42:48,777 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:42:50,179 INFO  L134       CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:42:50,179 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58343175]
[2020-10-28 10:42:50,179 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:42:50,180 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:42:50,180 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529263603]
[2020-10-28 10:42:50,181 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:42:50,181 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:42:50,182 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:42:50,182 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:42:50,182 INFO  L87              Difference]: Start difference. First operand 33687 states and 46193 transitions. Second operand 7 states.
[2020-10-28 10:43:23,660 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:43:23,660 INFO  L93              Difference]: Finished difference Result 101052 states and 148239 transitions.
[2020-10-28 10:43:23,661 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-28 10:43:23,662 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1765
[2020-10-28 10:43:23,662 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:43:24,050 INFO  L225             Difference]: With dead ends: 101052
[2020-10-28 10:43:24,050 INFO  L226             Difference]: Without dead ends: 67371
[2020-10-28 10:43:24,112 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-28 10:43:24,179 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67371 states.
[2020-10-28 10:43:25,568 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67371 to 65324.
[2020-10-28 10:43:25,569 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 65324 states.
[2020-10-28 10:43:25,781 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65324 states to 65324 states and 88972 transitions.
[2020-10-28 10:43:25,784 INFO  L78                 Accepts]: Start accepts. Automaton has 65324 states and 88972 transitions. Word has length 1765
[2020-10-28 10:43:25,785 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:43:25,785 INFO  L481      AbstractCegarLoop]: Abstraction has 65324 states and 88972 transitions.
[2020-10-28 10:43:25,785 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:43:25,786 INFO  L276                IsEmpty]: Start isEmpty. Operand 65324 states and 88972 transitions.