/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=0.4 --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 -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label32.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-14 01:20:41,801 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-14 01:20:41,804 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-14 01:20:41,841 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-14 01:20:41,841 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-14 01:20:41,849 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-14 01:20:41,851 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-14 01:20:41,854 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-14 01:20:41,856 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-14 01:20:41,860 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-14 01:20:41,860 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-14 01:20:41,861 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-14 01:20:41,862 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-14 01:20:41,864 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-14 01:20:41,866 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-14 01:20:41,867 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-14 01:20:41,869 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-14 01:20:41,869 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-14 01:20:41,871 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-14 01:20:41,878 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-14 01:20:41,879 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-14 01:20:41,880 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-14 01:20:41,881 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-14 01:20:41,882 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-14 01:20:41,884 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-14 01:20:41,884 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-14 01:20:41,884 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-14 01:20:41,885 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-14 01:20:41,885 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-14 01:20:41,886 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-14 01:20:41,886 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-14 01:20:41,887 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-14 01:20:41,887 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-14 01:20:41,888 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-14 01:20:41,889 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-14 01:20:41,889 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-14 01:20:41,889 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2020-10-14 01:20:41,890 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-14 01:20:41,890 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-14 01:20:41,891 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-14 01:20:41,892 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
[2020-10-14 01:20:41,913 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-14 01:20:41,913 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-14 01:20:41,915 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-14 01:20:41,915 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-14 01:20:41,915 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-14 01:20:41,915 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-14 01:20:41,915 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-14 01:20:41,916 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-14 01:20:41,916 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-14 01:20:41,916 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-14 01:20:41,916 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-14 01:20:41,916 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-14 01:20:41,916 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-14 01:20:41,917 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-14 01:20:41,917 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-14 01:20:41,917 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-14 01:20:41,917 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-14 01:20:41,917 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-14 01:20:41,917 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-14 01:20:41,918 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-14 01:20:41,918 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-14 01:20:41,918 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:20:41,918 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-14 01:20:41,918 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-14 01:20:41,919 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-14 01:20:41,919 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-14 01:20:41,919 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-14 01:20:41,919 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-14 01:20:41,919 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-14 01:20:41,920 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true;
[2020-10-14 01:20:42,184 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-14 01:20:42,195 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-14 01:20:42,205 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-14 01:20:42,206 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-14 01:20:42,207 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-14 01:20:42,207 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label32.c
[2020-10-14 01:20:42,265 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e18bb27a/7e61d630cec547928500b635face21d2/FLAGcfb256c20
[2020-10-14 01:20:43,084 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-14 01:20:43,084 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label32.c
[2020-10-14 01:20:43,129 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e18bb27a/7e61d630cec547928500b635face21d2/FLAGcfb256c20
[2020-10-14 01:20:43,522 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e18bb27a/7e61d630cec547928500b635face21d2
[2020-10-14 01:20:43,529 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-14 01:20:43,531 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-14 01:20:43,532 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-14 01:20:43,532 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-14 01:20:43,536 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-14 01:20:43,537 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:20:43" (1/1) ...
[2020-10-14 01:20:43,540 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a7ca52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:43, skipping insertion in model container
[2020-10-14 01:20:43,540 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:20:43" (1/1) ...
[2020-10-14 01:20:43,547 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-14 01:20:43,809 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-14 01:20:46,023 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:20:46,030 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-14 01:20:47,511 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:20:47,577 INFO  L208         MainTranslator]: Completed translation
[2020-10-14 01:20:47,579 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:47 WrapperNode
[2020-10-14 01:20:47,579 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-14 01:20:47,580 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-14 01:20:47,580 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-14 01:20:47,580 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-14 01:20:47,594 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:47" (1/1) ...
[2020-10-14 01:20:47,596 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:47" (1/1) ...
[2020-10-14 01:20:47,658 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:47" (1/1) ...
[2020-10-14 01:20:47,659 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:47" (1/1) ...
[2020-10-14 01:20:47,813 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:47" (1/1) ...
[2020-10-14 01:20:47,883 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:47" (1/1) ...
[2020-10-14 01:20:47,925 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:47" (1/1) ...
[2020-10-14 01:20:48,129 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-14 01:20:48,130 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-14 01:20:48,130 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-14 01:20:48,130 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-14 01:20:48,131 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:47" (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
[2020-10-14 01:20:48,202 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-14 01:20:48,202 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-14 01:20:48,202 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-14 01:20:48,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-14 01:20:48,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-14 01:20:48,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-14 01:20:48,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-14 01:20:48,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-14 01:20:48,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-14 01:20:48,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-14 01:20:48,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-14 01:20:48,205 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-14 01:20:48,205 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-14 01:20:48,206 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-14 01:20:48,206 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-14 01:20:48,206 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-14 01:20:48,207 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-14 01:20:48,207 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-14 01:20:48,207 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-14 01:20:48,207 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-14 01:20:48,207 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-14 01:20:48,208 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-14 01:20:48,208 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-14 01:20:48,208 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-14 01:20:48,209 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-14 01:20:56,052 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-14 01:20:56,052 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-14 01:20:56,073 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:20:56 BoogieIcfgContainer
[2020-10-14 01:20:56,073 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-14 01:20:56,074 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-14 01:20:56,074 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-14 01:20:56,077 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-14 01:20:56,078 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:20:43" (1/3) ...
[2020-10-14 01:20:56,079 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f5fd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:20:56, skipping insertion in model container
[2020-10-14 01:20:56,079 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:47" (2/3) ...
[2020-10-14 01:20:56,079 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f5fd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:20:56, skipping insertion in model container
[2020-10-14 01:20:56,079 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:20:56" (3/3) ...
[2020-10-14 01:20:56,081 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label32.c
[2020-10-14 01:20:56,092 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-14 01:20:56,101 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-14 01:20:56,116 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-14 01:20:56,147 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-14 01:20:56,147 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-14 01:20:56,147 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-14 01:20:56,147 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-14 01:20:56,148 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-14 01:20:56,148 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-14 01:20:56,148 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-14 01:20:56,148 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-14 01:20:56,196 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-14 01:20:56,300 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1658
[2020-10-14 01:20:56,301 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:20:56,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:20:56,304 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:20:56,310 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:20:56,312 INFO  L82        PathProgramCache]: Analyzing trace with hash 1224656536, now seen corresponding path program 1 times
[2020-10-14 01:20:56,324 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:20:56,324 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514520797]
[2020-10-14 01:20:56,326 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:20:57,354 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:57,816 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:02,391 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:02,392 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1679
[2020-10-14 01:21:02,392 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:02,392 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5028
[2020-10-14 01:21:02,394 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:02,395 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:02,395 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-14 01:21:02,395 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:21:02,395 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1673
[2020-10-14 01:21:02,396 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 01:21:04,317 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:21:04,323 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:04,331 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:04,342 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:04,342 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:21:04,343 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:04,343 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-10-14 01:21:04,343 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:04,343 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:04,344 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:21:04,344 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:21:04,344 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:21:04,344 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:06,485 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:21:06,486 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514520797]
[2020-10-14 01:21:06,487 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:21:06,488 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-14 01:21:06,489 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481030570]
[2020-10-14 01:21:06,498 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-14 01:21:06,498 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:21:06,508 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-14 01:21:06,509 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-14 01:21:06,511 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 4 states.
[2020-10-14 01:21:22,351 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:21:22,351 INFO  L93              Difference]: Finished difference Result 6309 states and 11850 transitions.
[2020-10-14 01:21:22,352 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 01:21:22,354 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1657
[2020-10-14 01:21:22,365 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:21:22,414 INFO  L225             Difference]: With dead ends: 6309
[2020-10-14 01:21:22,414 INFO  L226             Difference]: Without dead ends: 4023
[2020-10-14 01:21:22,428 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:21:22,454 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4023 states.
[2020-10-14 01:21:22,671 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4023 to 4008.
[2020-10-14 01:21:22,672 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4008 states.
[2020-10-14 01:21:22,696 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 6271 transitions.
[2020-10-14 01:21:22,698 INFO  L78                 Accepts]: Start accepts. Automaton has 4008 states and 6271 transitions. Word has length 1657
[2020-10-14 01:21:22,702 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:21:22,703 INFO  L479      AbstractCegarLoop]: Abstraction has 4008 states and 6271 transitions.
[2020-10-14 01:21:22,703 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-14 01:21:22,703 INFO  L276                IsEmpty]: Start isEmpty. Operand 4008 states and 6271 transitions.
[2020-10-14 01:21:22,855 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1667
[2020-10-14 01:21:22,855 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:21:22,856 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:21:22,857 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-14 01:21:22,857 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:21:22,858 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:21:22,859 INFO  L82        PathProgramCache]: Analyzing trace with hash -1611841661, now seen corresponding path program 1 times
[2020-10-14 01:21:22,859 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:21:22,860 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317310774]
[2020-10-14 01:21:22,861 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:21:22,980 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:23,010 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:24,963 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:28,019 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:28,020 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1690
[2020-10-14 01:21:28,024 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:21:28,025 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5035
[2020-10-14 01:21:28,026 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:28,026 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:28,027 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:21:28,027 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:21:28,027 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-14 01:21:28,027 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-14 01:21:28,587 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:21:28,590 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:28,591 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:28,598 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:28,599 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:21:28,599 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:28,599 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-14 01:21:28,600 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:28,600 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:28,606 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:21:28,606 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:21:28,606 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:21:28,606 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 6
[2020-10-14 01:21:28,628 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:21:28,631 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:28,633 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:28,647 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:28,647 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-14 01:21:28,647 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:28,647 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-10-14 01:21:28,648 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:28,648 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:28,648 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:21:28,648 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:21:28,649 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-14 01:21:28,649 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:29,738 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:21:29,738 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317310774]
[2020-10-14 01:21:29,739 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:21:29,739 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:21:29,739 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493458107]
[2020-10-14 01:21:29,750 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:21:29,750 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:21:29,750 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:21:29,751 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:21:29,751 INFO  L87              Difference]: Start difference. First operand 4008 states and 6271 transitions. Second operand 7 states.
[2020-10-14 01:21:51,253 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:21:51,254 INFO  L93              Difference]: Finished difference Result 11900 states and 18789 transitions.
[2020-10-14 01:21:51,255 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-14 01:21:51,255 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1666
[2020-10-14 01:21:51,256 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:21:51,291 INFO  L225             Difference]: With dead ends: 11900
[2020-10-14 01:21:51,292 INFO  L226             Difference]: Without dead ends: 7898
[2020-10-14 01:21:51,302 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:21:51,310 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7898 states.
[2020-10-14 01:21:51,450 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7697.
[2020-10-14 01:21:51,450 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7697 states.
[2020-10-14 01:21:51,472 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7697 states to 7697 states and 11289 transitions.
[2020-10-14 01:21:51,473 INFO  L78                 Accepts]: Start accepts. Automaton has 7697 states and 11289 transitions. Word has length 1666
[2020-10-14 01:21:51,473 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:21:51,473 INFO  L479      AbstractCegarLoop]: Abstraction has 7697 states and 11289 transitions.
[2020-10-14 01:21:51,473 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:21:51,474 INFO  L276                IsEmpty]: Start isEmpty. Operand 7697 states and 11289 transitions.
[2020-10-14 01:21:51,512 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1679
[2020-10-14 01:21:51,512 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:21:51,514 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 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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]
[2020-10-14 01:21:51,514 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-14 01:21:51,514 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:21:51,515 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:21:51,515 INFO  L82        PathProgramCache]: Analyzing trace with hash 1216570047, now seen corresponding path program 1 times
[2020-10-14 01:21:51,515 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:21:51,516 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872701100]
[2020-10-14 01:21:51,516 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:21:51,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:51,649 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:51,732 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:53,005 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:56,636 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:56,636 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1704
[2020-10-14 01:21:56,637 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:21:56,637 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5008
[2020-10-14 01:21:56,637 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:56,637 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:56,637 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:21:56,638 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 22
[2020-10-14 01:21:56,638 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-10-14 01:21:56,638 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:57,330 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:21:57,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:57,333 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:57,335 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:57,335 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:21:57,336 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:57,336 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-14 01:21:57,336 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:57,336 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:57,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:21:57,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:21:57,338 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:21:57,338 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:57,361 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:21:57,364 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:57,367 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:57,378 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:57,379 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-14 01:21:57,379 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:57,379 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-10-14 01:21:57,380 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:57,380 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:57,381 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:21:57,381 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:21:57,381 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-14 01:21:57,382 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:57,389 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2020-10-14 01:21:57,392 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:57,395 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:57,411 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:57,412 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-14 01:21:57,412 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:57,412 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-10-14 01:21:57,413 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:57,413 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:57,413 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:21:57,413 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:21:57,413 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-14 01:21:57,414 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:59,220 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-14 01:21:59,220 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872701100]
[2020-10-14 01:21:59,221 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:21:59,221 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-14 01:21:59,221 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322139242]
[2020-10-14 01:21:59,224 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:21:59,224 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:21:59,225 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:21:59,225 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:21:59,226 INFO  L87              Difference]: Start difference. First operand 7697 states and 11289 transitions. Second operand 7 states.
[2020-10-14 01:22:32,581 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:22:32,582 INFO  L93              Difference]: Finished difference Result 30234 states and 46226 transitions.
[2020-10-14 01:22:32,583 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:22:32,583 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1678
[2020-10-14 01:22:32,583 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:22:32,683 INFO  L225             Difference]: With dead ends: 30234
[2020-10-14 01:22:32,684 INFO  L226             Difference]: Without dead ends: 22543
[2020-10-14 01:22:32,714 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:22:32,739 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22543 states.
[2020-10-14 01:22:33,182 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22543 to 22495.
[2020-10-14 01:22:33,183 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22495 states.
[2020-10-14 01:22:33,233 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22495 states to 22495 states and 30048 transitions.
[2020-10-14 01:22:33,233 INFO  L78                 Accepts]: Start accepts. Automaton has 22495 states and 30048 transitions. Word has length 1678
[2020-10-14 01:22:33,234 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:22:33,234 INFO  L479      AbstractCegarLoop]: Abstraction has 22495 states and 30048 transitions.
[2020-10-14 01:22:33,234 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:22:33,234 INFO  L276                IsEmpty]: Start isEmpty. Operand 22495 states and 30048 transitions.
[2020-10-14 01:22:33,331 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1699
[2020-10-14 01:22:33,331 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:22:33,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-14 01:22:33,333 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-14 01:22:33,333 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:22:33,333 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:22:33,334 INFO  L82        PathProgramCache]: Analyzing trace with hash -594724943, now seen corresponding path program 1 times
[2020-10-14 01:22:33,334 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:22:33,335 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842285339]
[2020-10-14 01:22:33,335 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:22:33,662 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:34,020 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:35,830 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:38,668 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:38,668 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1722
[2020-10-14 01:22:38,668 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:22:38,668 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5002
[2020-10-14 01:22:38,669 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:38,669 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:38,669 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:22:38,669 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:22:38,669 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-14 01:22:38,669 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:22:39,115 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:22:39,118 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:39,121 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:39,129 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:39,129 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:22:39,129 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:22:39,129 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-14 01:22:39,130 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:39,130 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:39,130 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:22:39,130 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:22:39,130 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:22:39,131 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:22:39,150 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:22:39,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:39,167 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:39,234 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:39,234 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 42
[2020-10-14 01:22:39,234 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:22:39,234 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 73
[2020-10-14 01:22:39,235 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:39,235 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:39,236 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:22:39,237 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:22:39,237 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-10-14 01:22:39,237 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-14 01:22:40,625 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:22:40,625 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842285339]
[2020-10-14 01:22:40,626 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:22:40,626 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-10-14 01:22:40,626 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364138764]
[2020-10-14 01:22:40,628 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-14 01:22:40,628 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:22:40,628 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-14 01:22:40,629 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-14 01:22:40,629 INFO  L87              Difference]: Start difference. First operand 22495 states and 30048 transitions. Second operand 8 states.
[2020-10-14 01:23:14,060 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:23:14,060 INFO  L93              Difference]: Finished difference Result 77133 states and 111886 transitions.
[2020-10-14 01:23:14,061 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-14 01:23:14,061 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1698
[2020-10-14 01:23:14,062 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:23:14,307 INFO  L225             Difference]: With dead ends: 77133
[2020-10-14 01:23:14,307 INFO  L226             Difference]: Without dead ends: 54644
[2020-10-14 01:23:14,386 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272
[2020-10-14 01:23:14,455 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 54644 states.
[2020-10-14 01:23:15,644 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 54644 to 54199.
[2020-10-14 01:23:15,644 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 54199 states.
[2020-10-14 01:23:15,783 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 54199 states to 54199 states and 75786 transitions.
[2020-10-14 01:23:15,783 INFO  L78                 Accepts]: Start accepts. Automaton has 54199 states and 75786 transitions. Word has length 1698
[2020-10-14 01:23:15,784 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:23:15,784 INFO  L479      AbstractCegarLoop]: Abstraction has 54199 states and 75786 transitions.
[2020-10-14 01:23:15,784 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-14 01:23:15,784 INFO  L276                IsEmpty]: Start isEmpty. Operand 54199 states and 75786 transitions.
[2020-10-14 01:23:15,982 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1739
[2020-10-14 01:23:15,983 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:23:15,984 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, 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, 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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]
[2020-10-14 01:23:15,984 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-14 01:23:15,984 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:23:15,985 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:23:15,985 INFO  L82        PathProgramCache]: Analyzing trace with hash -1055032935, now seen corresponding path program 1 times
[2020-10-14 01:23:15,985 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:23:15,986 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12557264]
[2020-10-14 01:23:15,986 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:23:16,101 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:16,144 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:16,207 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:16,343 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:17,513 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:21,204 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:21,205 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1764
[2020-10-14 01:23:21,205 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-14 01:23:21,206 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5099
[2020-10-14 01:23:21,206 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:21,206 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:21,207 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:23:21,207 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 63
[2020-10-14 01:23:21,207 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:23:21,207 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:23:21,655 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:23:21,657 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:21,658 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:21,660 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:21,660 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:23:21,660 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:21,660 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-14 01:23:21,661 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:21,661 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:21,661 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:23:21,661 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:23:21,661 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:23:21,662 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:23:21,679 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:23:21,690 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:21,699 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:21,736 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:21,736 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-10-14 01:23:21,737 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:21,737 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 45
[2020-10-14 01:23:21,738 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:21,738 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:21,738 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:23:21,738 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 48
[2020-10-14 01:23:21,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:23:21,739 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:23:21,761 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2020-10-14 01:23:21,766 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:21,770 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:21,778 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:21,779 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-14 01:23:21,779 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:21,779 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-10-14 01:23:21,779 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:21,779 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:21,779 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:23:21,780 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-10-14 01:23:21,780 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:23:21,780 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:23:22,880 INFO  L134       CoverageAnalysis]: Checked inductivity of 95 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2020-10-14 01:23:22,881 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12557264]
[2020-10-14 01:23:22,881 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:23:22,881 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-10-14 01:23:22,882 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743485368]
[2020-10-14 01:23:22,884 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-14 01:23:22,884 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:23:22,884 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-14 01:23:22,885 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:23:22,885 INFO  L87              Difference]: Start difference. First operand 54199 states and 75786 transitions. Second operand 5 states.
[2020-10-14 01:23:43,424 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:23:43,424 INFO  L93              Difference]: Finished difference Result 147317 states and 217521 transitions.
[2020-10-14 01:23:43,425 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 01:23:43,425 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1738
[2020-10-14 01:23:43,426 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:23:43,755 INFO  L225             Difference]: With dead ends: 147317
[2020-10-14 01:23:43,755 INFO  L226             Difference]: Without dead ends: 93124
[2020-10-14 01:23:43,880 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-14 01:23:43,981 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 93124 states.
[2020-10-14 01:23:45,876 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 93124 to 91353.
[2020-10-14 01:23:45,876 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 91353 states.
[2020-10-14 01:23:46,087 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 91353 states to 91353 states and 124947 transitions.
[2020-10-14 01:23:46,088 INFO  L78                 Accepts]: Start accepts. Automaton has 91353 states and 124947 transitions. Word has length 1738
[2020-10-14 01:23:46,089 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:23:46,089 INFO  L479      AbstractCegarLoop]: Abstraction has 91353 states and 124947 transitions.
[2020-10-14 01:23:46,089 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-14 01:23:46,089 INFO  L276                IsEmpty]: Start isEmpty. Operand 91353 states and 124947 transitions.
[2020-10-14 01:23:46,338 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1742
[2020-10-14 01:23:46,339 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:23:46,340 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2020-10-14 01:23:46,340 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-14 01:23:46,340 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:23:46,340 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:23:46,341 INFO  L82        PathProgramCache]: Analyzing trace with hash -508904098, now seen corresponding path program 1 times
[2020-10-14 01:23:46,341 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:23:46,342 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013702908]
[2020-10-14 01:23:46,342 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:23:46,445 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:46,469 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:46,541 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:46,723 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:48,424 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:51,926 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:51,926 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1769
[2020-10-14 01:23:51,926 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-14 01:23:51,926 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5477
[2020-10-14 01:23:51,927 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:51,927 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:51,927 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:23:51,927 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-10-14 01:23:51,927 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-14 01:23:51,928 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:23:52,230 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:23:52,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:52,232 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:52,233 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:52,233 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:23:52,233 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:52,234 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-14 01:23:52,234 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:52,234 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:52,234 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:23:52,234 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:23:52,234 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:23:52,234 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:23:52,250 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:23:52,254 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:52,256 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:52,263 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:52,263 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-10-14 01:23:52,263 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:52,264 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-14 01:23:52,264 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:52,264 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:52,264 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:23:52,264 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:23:52,264 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-10-14 01:23:52,264 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:23:52,274 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-10-14 01:23:52,281 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:52,286 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:52,320 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:52,320 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-10-14 01:23:52,320 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:52,320 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 38
[2020-10-14 01:23:52,320 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:52,320 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:52,321 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:23:52,321 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:23:52,321 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 45
[2020-10-14 01:23:52,321 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:23:52,378 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2020-10-14 01:23:52,384 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:52,389 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:52,399 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:52,399 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-14 01:23:52,400 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:52,400 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-14 01:23:52,400 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:52,400 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:52,400 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:23:52,401 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-10-14 01:23:52,401 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:23:52,401 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:23:53,524 INFO  L134       CoverageAnalysis]: Checked inductivity of 125 backedges. 88 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2020-10-14 01:23:53,525 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013702908]
[2020-10-14 01:23:53,525 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:23:53,525 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-14 01:23:53,526 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094632295]
[2020-10-14 01:23:53,527 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-14 01:23:53,527 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:23:53,527 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-14 01:23:53,528 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-14 01:23:53,528 INFO  L87              Difference]: Start difference. First operand 91353 states and 124947 transitions. Second operand 8 states.