/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=BIGGEST --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_label00.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-12 11:45:34,644 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-12 11:45:34,647 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-12 11:45:34,688 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-12 11:45:34,689 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-12 11:45:34,697 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-12 11:45:34,699 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-12 11:45:34,702 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-12 11:45:34,705 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-12 11:45:34,707 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-12 11:45:34,708 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-12 11:45:34,709 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-12 11:45:34,710 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-12 11:45:34,712 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-12 11:45:34,715 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-12 11:45:34,716 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-12 11:45:34,718 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-12 11:45:34,719 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-12 11:45:34,720 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-12 11:45:34,728 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-12 11:45:34,730 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-12 11:45:34,731 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-12 11:45:34,732 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-12 11:45:34,733 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-12 11:45:34,745 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-12 11:45:34,750 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-12 11:45:34,751 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-12 11:45:34,752 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-12 11:45:34,754 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-12 11:45:34,755 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-12 11:45:34,755 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-12 11:45:34,756 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-12 11:45:34,757 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-12 11:45:34,761 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-12 11:45:34,762 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-12 11:45:34,762 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-12 11:45:34,762 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-12 11:45:34,763 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-12 11:45:34,763 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-12 11:45:34,765 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-12 11:45:34,769 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-12 11:45:34,770 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
[2020-10-12 11:45:34,810 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-12 11:45:34,811 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-12 11:45:34,812 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-12 11:45:34,812 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-12 11:45:34,812 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-12 11:45:34,813 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-12 11:45:34,813 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-12 11:45:34,813 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-12 11:45:34,814 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-12 11:45:34,814 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-12 11:45:34,815 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-12 11:45:34,815 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-12 11:45:34,815 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-12 11:45:34,816 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-12 11:45:34,816 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-12 11:45:34,816 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-12 11:45:34,816 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-12 11:45:34,816 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-12 11:45:34,817 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-12 11:45:34,817 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-12 11:45:34,817 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-12 11:45:34,817 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-12 11:45:34,818 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-12 11:45:34,818 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-12 11:45:34,818 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-12 11:45:34,818 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-12 11:45:34,818 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-12 11:45:34,819 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-12 11:45:34,819 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-12 11:45:34,819 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true;
[2020-10-12 11:45:35,146 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-12 11:45:35,167 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-12 11:45:35,170 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-12 11:45:35,171 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-12 11:45:35,172 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-12 11:45:35,172 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label00.c
[2020-10-12 11:45:35,236 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dabe95bb0/8091b6c4ca974b03a1c4b5b91f3f029f/FLAG935406af9
[2020-10-12 11:45:36,206 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-12 11:45:36,207 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label00.c
[2020-10-12 11:45:36,269 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dabe95bb0/8091b6c4ca974b03a1c4b5b91f3f029f/FLAG935406af9
[2020-10-12 11:45:36,522 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dabe95bb0/8091b6c4ca974b03a1c4b5b91f3f029f
[2020-10-12 11:45:36,535 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-12 11:45:36,537 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-12 11:45:36,542 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-12 11:45:36,542 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-12 11:45:36,546 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-12 11:45:36,547 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:45:36" (1/1) ...
[2020-10-12 11:45:36,551 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35692340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:36, skipping insertion in model container
[2020-10-12 11:45:36,551 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:45:36" (1/1) ...
[2020-10-12 11:45:36,560 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-12 11:45:36,796 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-12 11:45:39,507 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 11:45:39,518 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-12 11:45:40,886 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 11:45:40,956 INFO  L208         MainTranslator]: Completed translation
[2020-10-12 11:45:40,958 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40 WrapperNode
[2020-10-12 11:45:40,958 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-12 11:45:40,959 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-12 11:45:40,959 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-12 11:45:40,959 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-12 11:45:40,973 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (1/1) ...
[2020-10-12 11:45:40,975 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (1/1) ...
[2020-10-12 11:45:41,049 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (1/1) ...
[2020-10-12 11:45:41,050 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (1/1) ...
[2020-10-12 11:45:41,345 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (1/1) ...
[2020-10-12 11:45:41,423 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (1/1) ...
[2020-10-12 11:45:41,508 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (1/1) ...
[2020-10-12 11:45:41,590 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-12 11:45:41,591 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-12 11:45:41,591 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-12 11:45:41,591 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-12 11:45:41,593 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (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
[2020-10-12 11:45:41,676 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-12 11:45:41,676 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-12 11:45:41,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-12 11:45:41,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-12 11:45:41,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-12 11:45:41,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-12 11:45:41,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-12 11:45:41,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-12 11:45:41,678 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-12 11:45:41,678 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-12 11:45:41,678 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-12 11:45:41,678 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-12 11:45:41,679 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-12 11:45:41,679 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-12 11:45:41,679 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-12 11:45:41,679 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-12 11:45:41,679 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-12 11:45:41,680 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-12 11:45:41,680 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-12 11:45:41,680 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-12 11:45:41,681 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-12 11:45:41,681 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-12 11:45:41,681 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-12 11:45:41,681 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-12 11:45:41,681 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-12 11:45:50,155 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-12 11:45:50,155 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-12 11:45:50,174 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:45:50 BoogieIcfgContainer
[2020-10-12 11:45:50,174 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-12 11:45:50,175 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-12 11:45:50,176 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-12 11:45:50,182 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-12 11:45:50,182 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:45:36" (1/3) ...
[2020-10-12 11:45:50,183 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca7aba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:45:50, skipping insertion in model container
[2020-10-12 11:45:50,183 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (2/3) ...
[2020-10-12 11:45:50,183 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca7aba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:45:50, skipping insertion in model container
[2020-10-12 11:45:50,184 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:45:50" (3/3) ...
[2020-10-12 11:45:50,186 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label00.c
[2020-10-12 11:45:50,196 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-12 11:45:50,206 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-12 11:45:50,222 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-12 11:45:50,255 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-12 11:45:50,256 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-12 11:45:50,256 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-12 11:45:50,256 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-12 11:45:50,256 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-12 11:45:50,256 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-12 11:45:50,256 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-12 11:45:50,257 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-12 11:45:50,305 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-12 11:45:50,403 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1653
[2020-10-12 11:45:50,403 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 11:45:50,406 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]
[2020-10-12 11:45:50,406 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 11:45:50,412 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 11:45:50,414 INFO  L82        PathProgramCache]: Analyzing trace with hash -555900871, now seen corresponding path program 1 times
[2020-10-12 11:45:50,421 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 11:45:50,421 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76449234]
[2020-10-12 11:45:50,422 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 11:45:51,367 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:45:52,111 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:45:56,516 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:45:56,517 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1674
[2020-10-12 11:45:56,517 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:45:56,518 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5139
[2020-10-12 11:45:56,520 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:45:56,520 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-12 11:45:56,520 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 11:45:56,520 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1668
[2020-10-12 11:45:56,521 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-12 11:45:58,699 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 11:45:58,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:45:58,708 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:45:58,725 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:45:58,726 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 11:45:58,726 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:45:58,726 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-10-12 11:45:58,727 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:45:58,727 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 11:45:58,727 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:45:58,727 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 11:45:58,727 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:46:01,042 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-12 11:46:01,043 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76449234]
[2020-10-12 11:46:01,045 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-12 11:46:01,046 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-12 11:46:01,047 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308284563]
[2020-10-12 11:46:01,056 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-12 11:46:01,057 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 11:46:01,070 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-12 11:46:01,071 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-12 11:46:01,072 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 4 states.
[2020-10-12 11:46:17,579 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 11:46:17,579 INFO  L93              Difference]: Finished difference Result 6311 states and 11851 transitions.
[2020-10-12 11:46:17,580 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-12 11:46:17,581 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1652
[2020-10-12 11:46:17,591 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 11:46:17,632 INFO  L225             Difference]: With dead ends: 6311
[2020-10-12 11:46:17,632 INFO  L226             Difference]: Without dead ends: 4025
[2020-10-12 11:46:17,645 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-12 11:46:17,670 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4025 states.
[2020-10-12 11:46:17,856 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3996.
[2020-10-12 11:46:17,858 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3996 states.
[2020-10-12 11:46:17,879 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6427 transitions.
[2020-10-12 11:46:17,881 INFO  L78                 Accepts]: Start accepts. Automaton has 3996 states and 6427 transitions. Word has length 1652
[2020-10-12 11:46:17,888 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 11:46:17,888 INFO  L479      AbstractCegarLoop]: Abstraction has 3996 states and 6427 transitions.
[2020-10-12 11:46:17,889 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-12 11:46:17,889 INFO  L276                IsEmpty]: Start isEmpty. Operand 3996 states and 6427 transitions.
[2020-10-12 11:46:17,993 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1662
[2020-10-12 11:46:17,993 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 11:46:17,994 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-12 11:46:17,995 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-12 11:46:17,995 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 11:46:17,996 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 11:46:17,996 INFO  L82        PathProgramCache]: Analyzing trace with hash 844890222, now seen corresponding path program 1 times
[2020-10-12 11:46:17,997 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 11:46:17,997 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035817233]
[2020-10-12 11:46:17,997 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 11:46:18,137 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:46:18,165 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:46:20,506 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:46:23,236 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:46:23,237 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1685
[2020-10-12 11:46:23,237 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-12 11:46:23,237 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5096
[2020-10-12 11:46:23,238 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:46:23,238 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-12 11:46:23,239 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-12 11:46:23,239 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1665
[2020-10-12 11:46:23,239 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 11:46:24,220 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 11:46:24,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:46:24,223 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:46:24,226 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:46:24,226 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 11:46:24,227 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:46:24,227 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 11:46:24,227 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:46:24,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 11:46:24,228 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:46:24,228 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 11:46:24,228 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:46:24,249 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-12 11:46:24,252 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:46:24,255 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:46:24,264 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:46:24,265 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-12 11:46:24,265 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:46:24,265 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-10-12 11:46:24,265 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:46:24,265 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 11:46:24,266 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:46:24,266 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 11:46:24,266 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:46:27,201 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-12 11:46:27,202 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035817233]
[2020-10-12 11:46:27,202 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-12 11:46:27,202 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-12 11:46:27,203 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444228960]
[2020-10-12 11:46:27,207 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-12 11:46:27,208 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 11:46:27,208 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-12 11:46:27,208 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-12 11:46:27,208 INFO  L87              Difference]: Start difference. First operand 3996 states and 6427 transitions. Second operand 6 states.
[2020-10-12 11:46:55,563 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 11:46:55,564 INFO  L93              Difference]: Finished difference Result 15224 states and 24991 transitions.
[2020-10-12 11:46:55,565 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-12 11:46:55,565 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 1661
[2020-10-12 11:46:55,569 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 11:46:55,628 INFO  L225             Difference]: With dead ends: 15224
[2020-10-12 11:46:55,628 INFO  L226             Difference]: Without dead ends: 11234
[2020-10-12 11:46:55,641 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2020-10-12 11:46:55,655 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11234 states.
[2020-10-12 11:46:55,906 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11234 to 11079.
[2020-10-12 11:46:55,907 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11079 states.
[2020-10-12 11:46:55,944 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11079 states to 11079 states and 17677 transitions.
[2020-10-12 11:46:55,945 INFO  L78                 Accepts]: Start accepts. Automaton has 11079 states and 17677 transitions. Word has length 1661
[2020-10-12 11:46:55,947 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 11:46:55,948 INFO  L479      AbstractCegarLoop]: Abstraction has 11079 states and 17677 transitions.
[2020-10-12 11:46:55,948 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-12 11:46:55,948 INFO  L276                IsEmpty]: Start isEmpty. Operand 11079 states and 17677 transitions.
[2020-10-12 11:46:56,005 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1670
[2020-10-12 11:46:56,006 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 11:46:56,007 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-12 11:46:56,008 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-12 11:46:56,008 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 11:46:56,008 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 11:46:56,009 INFO  L82        PathProgramCache]: Analyzing trace with hash -501837198, now seen corresponding path program 1 times
[2020-10-12 11:46:56,009 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 11:46:56,009 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127717291]
[2020-10-12 11:46:56,010 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 11:46:56,135 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:46:56,161 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:46:56,256 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:47:01,253 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:47:01,253 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1695
[2020-10-12 11:47:01,253 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-12 11:47:01,254 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5114
[2020-10-12 11:47:01,254 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:47:01,254 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-12 11:47:01,254 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 11:47:01,254 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-12 11:47:01,255 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:47:01,675 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 11:47:01,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:47:01,688 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:47:01,698 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:47:01,699 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 11:47:01,699 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:47:01,699 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-10-12 11:47:01,699 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:47:01,699 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 11:47:01,700 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:47:01,700 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 11:47:01,701 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 11:47:01,716 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-12 11:47:01,719 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:47:01,721 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:47:01,735 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:47:01,736 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-12 11:47:01,736 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:47:01,736 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-10-12 11:47:01,736 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:47:01,737 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-12 11:47:01,737 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-12 11:47:01,737 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-12 11:47:01,737 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:47:01,761 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-12 11:47:01,763 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:47:01,765 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:47:01,767 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:47:01,767 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-12 11:47:01,768 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:47:01,768 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 11:47:01,768 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:47:01,768 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 11:47:01,769 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 6
[2020-10-12 11:47:01,769 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 11:47:01,769 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:47:02,974 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-10-12 11:47:02,974 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127717291]
[2020-10-12 11:47:02,974 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-12 11:47:02,975 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-12 11:47:02,975 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091007842]
[2020-10-12 11:47:02,977 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-12 11:47:02,978 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 11:47:02,978 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-12 11:47:02,978 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-12 11:47:02,979 INFO  L87              Difference]: Start difference. First operand 11079 states and 17677 transitions. Second operand 7 states.
[2020-10-12 11:47:27,075 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 11:47:27,075 INFO  L93              Difference]: Finished difference Result 33436 states and 55367 transitions.
[2020-10-12 11:47:27,077 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-12 11:47:27,077 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1669
[2020-10-12 11:47:27,077 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 11:47:27,169 INFO  L225             Difference]: With dead ends: 33436
[2020-10-12 11:47:27,169 INFO  L226             Difference]: Without dead ends: 22363
[2020-10-12 11:47:27,203 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-12 11:47:27,228 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22363 states.
[2020-10-12 11:47:27,942 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22363 to 21941.
[2020-10-12 11:47:27,942 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 21941 states.
[2020-10-12 11:47:27,987 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21941 states to 21941 states and 32556 transitions.
[2020-10-12 11:47:27,987 INFO  L78                 Accepts]: Start accepts. Automaton has 21941 states and 32556 transitions. Word has length 1669
[2020-10-12 11:47:27,988 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 11:47:27,988 INFO  L479      AbstractCegarLoop]: Abstraction has 21941 states and 32556 transitions.
[2020-10-12 11:47:27,989 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-12 11:47:27,989 INFO  L276                IsEmpty]: Start isEmpty. Operand 21941 states and 32556 transitions.
[2020-10-12 11:47:28,096 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1672
[2020-10-12 11:47:28,096 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 11:47:28,099 INFO  L422         BasicCegarLoop]: trace histogram [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, 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]
[2020-10-12 11:47:28,099 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-12 11:47:28,099 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 11:47:28,099 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 11:47:28,100 INFO  L82        PathProgramCache]: Analyzing trace with hash -848602034, now seen corresponding path program 1 times
[2020-10-12 11:47:28,100 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 11:47:28,101 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186454965]
[2020-10-12 11:47:28,101 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 11:47:28,240 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:47:28,281 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:47:28,567 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:47:30,537 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:47:33,539 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:47:33,539 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1697
[2020-10-12 11:47:33,540 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-12 11:47:33,540 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5295
[2020-10-12 11:47:33,540 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:47:33,540 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-12 11:47:33,540 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 11:47:33,541 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 27
[2020-10-12 11:47:33,541 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:47:34,012 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 11:47:34,016 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:47:34,020 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:47:34,037 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:47:34,038 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 11:47:34,038 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:47:34,039 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-12 11:47:34,039 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:47:34,039 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 11:47:34,040 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:47:34,040 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 11:47:34,040 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 11:47:34,063 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-12 11:47:34,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:47:34,070 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:47:34,081 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:47:34,097 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:47:34,098 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-12 11:47:34,098 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-12 11:47:34,098 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 29
[2020-10-12 11:47:34,098 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:47:34,099 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-12 11:47:34,099 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-12 11:47:34,099 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-10-12 11:47:34,099 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:47:34,120 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-12 11:47:34,122 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:47:34,124 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:47:34,131 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:47:34,132 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-12 11:47:34,132 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:47:34,132 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-12 11:47:34,134 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:47:34,134 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-12 11:47:34,135 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-12 11:47:34,135 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-10-12 11:47:34,135 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 11:47:35,210 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-10-12 11:47:35,210 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186454965]
[2020-10-12 11:47:35,211 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-12 11:47:35,211 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-12 11:47:35,211 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32090889]
[2020-10-12 11:47:35,213 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-12 11:47:35,213 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 11:47:35,214 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-12 11:47:35,214 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-12 11:47:35,214 INFO  L87              Difference]: Start difference. First operand 21941 states and 32556 transitions. Second operand 7 states.
[2020-10-12 11:47:59,622 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 11:47:59,623 INFO  L93              Difference]: Finished difference Result 55091 states and 87155 transitions.
[2020-10-12 11:47:59,624 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-12 11:47:59,624 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1671
[2020-10-12 11:47:59,625 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 11:47:59,764 INFO  L225             Difference]: With dead ends: 55091
[2020-10-12 11:47:59,764 INFO  L226             Difference]: Without dead ends: 33156
[2020-10-12 11:47:59,832 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-12 11:47:59,872 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33156 states.
[2020-10-12 11:48:00,596 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33156 to 32790.
[2020-10-12 11:48:00,596 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32790 states.
[2020-10-12 11:48:00,666 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32790 states to 32790 states and 48948 transitions.
[2020-10-12 11:48:00,666 INFO  L78                 Accepts]: Start accepts. Automaton has 32790 states and 48948 transitions. Word has length 1671
[2020-10-12 11:48:00,667 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 11:48:00,667 INFO  L479      AbstractCegarLoop]: Abstraction has 32790 states and 48948 transitions.
[2020-10-12 11:48:00,667 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-12 11:48:00,667 INFO  L276                IsEmpty]: Start isEmpty. Operand 32790 states and 48948 transitions.
[2020-10-12 11:48:00,783 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1723
[2020-10-12 11:48:00,783 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 11:48:00,786 INFO  L422         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-12 11:48:00,786 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-12 11:48:00,786 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 11:48:00,787 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 11:48:00,787 INFO  L82        PathProgramCache]: Analyzing trace with hash -1140848903, now seen corresponding path program 1 times
[2020-10-12 11:48:00,788 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 11:48:00,788 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673907165]
[2020-10-12 11:48:00,788 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 11:48:00,944 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:48:01,000 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:48:01,318 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:48:06,032 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:48:06,033 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1748
[2020-10-12 11:48:06,033 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-12 11:48:06,033 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5085
[2020-10-12 11:48:06,033 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:48:06,034 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-12 11:48:06,034 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 11:48:06,034 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-10-12 11:48:06,034 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:48:06,330 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 11:48:06,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:48:06,334 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:48:06,338 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:48:06,339 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 11:48:06,339 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:48:06,339 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-12 11:48:06,339 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:48:06,340 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 11:48:06,340 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:48:06,340 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 11:48:06,340 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:48:06,362 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-12 11:48:06,367 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:48:06,371 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:48:06,402 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:48:06,402 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-12 11:48:06,403 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:48:06,403 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-10-12 11:48:06,403 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:48:06,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-12 11:48:06,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-12 11:48:06,404 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-12 11:48:06,404 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:48:06,441 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-10-12 11:48:06,450 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:48:06,458 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:48:06,478 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:48:06,479 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-12 11:48:06,479 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:48:06,479 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 27
[2020-10-12 11:48:06,479 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:48:06,479 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 11:48:06,480 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 46
[2020-10-12 11:48:06,480 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 11:48:06,480 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:48:07,686 INFO  L134       CoverageAnalysis]: Checked inductivity of 86 backedges. 64 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-10-12 11:48:07,687 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673907165]
[2020-10-12 11:48:07,687 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-12 11:48:07,687 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-12 11:48:07,687 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173890996]
[2020-10-12 11:48:07,689 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-12 11:48:07,689 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 11:48:07,690 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-12 11:48:07,690 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-12 11:48:07,690 INFO  L87              Difference]: Start difference. First operand 32790 states and 48948 transitions. Second operand 7 states.
[2020-10-12 11:48:35,249 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 11:48:35,249 INFO  L93              Difference]: Finished difference Result 78421 states and 127455 transitions.
[2020-10-12 11:48:35,250 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-12 11:48:35,250 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1722
[2020-10-12 11:48:35,251 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 11:48:35,434 INFO  L225             Difference]: With dead ends: 78421
[2020-10-12 11:48:35,434 INFO  L226             Difference]: Without dead ends: 45637
[2020-10-12 11:48:35,500 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2020-10-12 11:48:35,548 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45637 states.
[2020-10-12 11:48:36,596 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45637 to 44767.
[2020-10-12 11:48:36,596 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 44767 states.
[2020-10-12 11:48:36,712 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44767 states to 44767 states and 65330 transitions.
[2020-10-12 11:48:36,713 INFO  L78                 Accepts]: Start accepts. Automaton has 44767 states and 65330 transitions. Word has length 1722
[2020-10-12 11:48:36,714 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 11:48:36,714 INFO  L479      AbstractCegarLoop]: Abstraction has 44767 states and 65330 transitions.
[2020-10-12 11:48:36,714 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-12 11:48:36,714 INFO  L276                IsEmpty]: Start isEmpty. Operand 44767 states and 65330 transitions.
[2020-10-12 11:48:36,863 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1799
[2020-10-12 11:48:36,863 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 11:48:36,865 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-12 11:48:36,865 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-12 11:48:36,865 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 11:48:36,866 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 11:48:36,867 INFO  L82        PathProgramCache]: Analyzing trace with hash -1993727423, now seen corresponding path program 1 times
[2020-10-12 11:48:36,867 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 11:48:36,867 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028135296]
[2020-10-12 11:48:36,867 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 11:48:36,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:48:37,027 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:48:37,164 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:48:37,939 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:48:42,005 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:48:42,005 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1824
[2020-10-12 11:48:42,006 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-12 11:48:42,006 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5005
[2020-10-12 11:48:42,006 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:48:42,007 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 25
[2020-10-12 11:48:42,007 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 156
[2020-10-12 11:48:42,007 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 773
[2020-10-12 11:48:42,007 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 11:48:45,364 WARN  L193               SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39
[2020-10-12 11:48:45,511 WARN  L193               SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39
[2020-10-12 11:48:45,657 WARN  L193               SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39
[2020-10-12 11:48:45,870 WARN  L193               SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 42
[2020-10-12 11:48:46,287 WARN  L193               SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 38
[2020-10-12 11:48:46,658 WARN  L193               SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 50
[2020-10-12 11:48:46,997 WARN  L193               SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 49
[2020-10-12 11:48:47,224 WARN  L193               SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 29
[2020-10-12 11:48:47,615 WARN  L193               SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29
[2020-10-12 11:48:47,869 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 11:48:47,875 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:48:47,876 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:48:47,878 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:48:47,878 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 11:48:47,879 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:48:47,879 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 11:48:47,879 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:48:47,879 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 11:48:47,879 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:48:47,879 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 11:48:47,879 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:48:47,924 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-12 11:48:47,927 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:48:47,928 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:48:47,938 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:48:47,939 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 38
[2020-10-12 11:48:47,939 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:48:47,939 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-12 11:48:47,939 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:48:47,939 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 11:48:47,939 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:48:47,940 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 11:48:47,940 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:48:47,946 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-10-12 11:48:47,961 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:48:47,971 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:48:48,082 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:48:48,082 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 110
[2020-10-12 11:48:48,083 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:48:48,083 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 120
[2020-10-12 11:48:48,083 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:48:48,084 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-10-12 11:48:48,084 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:48:48,084 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 103
[2020-10-12 11:48:48,085 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 11:49:01,648 INFO  L134       CoverageAnalysis]: Checked inductivity of 175 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2020-10-12 11:49:01,649 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028135296]
[2020-10-12 11:49:01,649 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-12 11:49:01,649 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2020-10-12 11:49:01,650 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723192026]
[2020-10-12 11:49:01,651 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-12 11:49:01,651 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 11:49:01,652 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-12 11:49:01,652 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380
[2020-10-12 11:49:01,652 INFO  L87              Difference]: Start difference. First operand 44767 states and 65330 transitions. Second operand 20 states.
[2020-10-12 11:49:04,162 WARN  L193               SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 73
[2020-10-12 11:49:04,341 WARN  L193               SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 83