/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 SingleStatement --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:13:36,690 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:13:36,695 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:13:36,737 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:13:36,738 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:13:36,749 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:13:36,751 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:13:36,755 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:13:36,758 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:13:36,760 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-24 16:13:36,762 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:13:36,766 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:13:36,769 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:13:36,770 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:13:36,772 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:13:36,773 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:13:36,775 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:13:36,782 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:13:36,785 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:13:36,786 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:13:36,787 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:13:36,788 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:13:36,792 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:13:36,792 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:13:36,792 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:13:36,795 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:13:36,796 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:13:36,798 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:13:36,798 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:13:36,799 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:13:36,800 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:13:36,801 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:13:36,802 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:13:36,803 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:13:36,804 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:13:36,804 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:13:36,804 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 16:13:36,806 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:13:36,807 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
[2020-09-24 16:13:36,854 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 16:13:36,854 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:13:36,856 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:13:36,856 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 16:13:36,856 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 16:13:36,857 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:13:36,857 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 16:13:36,857 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 16:13:36,858 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 16:13:36,858 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 16:13:36,859 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:13:36,859 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:13:36,859 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:13:36,860 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 16:13:36,860 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 16:13:36,860 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 16:13:36,860 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:13:36,861 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:13:36,861 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 16:13:36,861 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 16:13:36,861 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 16:13:36,861 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:13:36,862 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:13:36,862 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:13:36,862 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:13:36,862 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 16:13:36,862 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:13:36,862 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:13:36,863 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 16:13:36,863 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 -> SingleStatement
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;interpolation-heuristic=FIRST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true;
[2020-09-24 16:13:37,291 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:13:37,308 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:13:37,312 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:13:37,314 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 16:13:37,314 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 16:13:37,315 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2020-09-24 16:13:37,395 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5eb3cb182/c9511af8933b44c5bb8e6eeaf6898f6e/FLAGd45ea35af
[2020-09-24 16:13:37,997 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 16:13:37,998 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2020-09-24 16:13:38,029 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5eb3cb182/c9511af8933b44c5bb8e6eeaf6898f6e/FLAGd45ea35af
[2020-09-24 16:13:38,245 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5eb3cb182/c9511af8933b44c5bb8e6eeaf6898f6e
[2020-09-24 16:13:38,258 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:13:38,264 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:13:38,266 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:13:38,266 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:13:38,270 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:13:38,271 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:13:38" (1/1) ...
[2020-09-24 16:13:38,275 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a9c366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:38, skipping insertion in model container
[2020-09-24 16:13:38,275 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:13:38" (1/1) ...
[2020-09-24 16:13:38,284 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 16:13:38,364 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:13:39,026 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:13:39,058 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 16:13:39,495 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:13:39,518 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 16:13:39,518 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:39 WrapperNode
[2020-09-24 16:13:39,518 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:13:39,519 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:13:39,519 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:13:39,519 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:13:39,534 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:39" (1/1) ...
[2020-09-24 16:13:39,534 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:39" (1/1) ...
[2020-09-24 16:13:39,559 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:39" (1/1) ...
[2020-09-24 16:13:39,560 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:39" (1/1) ...
[2020-09-24 16:13:39,614 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:39" (1/1) ...
[2020-09-24 16:13:39,642 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:39" (1/1) ...
[2020-09-24 16:13:39,650 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:39" (1/1) ...
[2020-09-24 16:13:39,664 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:13:39,664 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:13:39,665 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:13:39,665 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:13:39,666 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:39" (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
[2020-09-24 16:13:39,758 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:13:39,758 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:13:39,758 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-24 16:13:39,759 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:13:39,759 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:13:39,759 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2020-09-24 16:13:39,759 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-09-24 16:13:39,759 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2020-09-24 16:13:39,760 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-24 16:13:39,760 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-24 16:13:39,760 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2020-09-24 16:13:39,760 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2020-09-24 16:13:39,760 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2020-09-24 16:13:39,761 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2020-09-24 16:13:39,761 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2020-09-24 16:13:39,761 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2020-09-24 16:13:39,761 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2020-09-24 16:13:39,761 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:13:39,762 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:13:39,762 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:13:41,765 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:13:41,766 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 16:13:41,780 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:13:41 BoogieIcfgContainer
[2020-09-24 16:13:41,780 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:13:41,781 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:13:41,781 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:13:41,785 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:13:41,786 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:13:38" (1/3) ...
[2020-09-24 16:13:41,786 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683c83bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:13:41, skipping insertion in model container
[2020-09-24 16:13:41,787 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:39" (2/3) ...
[2020-09-24 16:13:41,787 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683c83bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:13:41, skipping insertion in model container
[2020-09-24 16:13:41,787 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:13:41" (3/3) ...
[2020-09-24 16:13:41,789 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2020-09-24 16:13:41,801 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:13:41,812 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations.
[2020-09-24 16:13:41,833 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2020-09-24 16:13:41,868 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:13:41,868 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 16:13:41,868 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:13:41,868 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:13:41,868 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:13:41,868 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 16:13:41,869 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:13:41,869 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:13:41,910 INFO  L276                IsEmpty]: Start isEmpty. Operand 1237 states.
[2020-09-24 16:13:41,956 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 466
[2020-09-24 16:13:41,956 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:13:41,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:13:41,958 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:13:41,970 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:13:41,970 INFO  L82        PathProgramCache]: Analyzing trace with hash 1578062424, now seen corresponding path program 1 times
[2020-09-24 16:13:41,980 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:13:41,981 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541190521]
[2020-09-24 16:13:41,981 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:13:42,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:13:42,594 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:13:42,594 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:13:42,595 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:13:42,596 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:13:42,596 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 472
[2020-09-24 16:13:42,597 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:13:42,597 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-09-24 16:13:42,597 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:13:42,598 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:13:42,598 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 212
[2020-09-24 16:13:42,598 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 213
[2020-09-24 16:13:42,599 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:13:43,415 WARN  L193               SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2020-09-24 16:13:43,417 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:13:43,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:13:43,433 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:13:43,433 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:13:43,434 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:13:43,435 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:13:43,435 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-09-24 16:13:43,435 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:13:43,435 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:13:43,435 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:13:43,436 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:13:43,436 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:13:43,436 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:13:43,437 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:13:43,856 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 16:13:43,857 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541190521]
[2020-09-24 16:13:43,859 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:13:43,860 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 16:13:43,861 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580787732]
[2020-09-24 16:13:43,868 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 16:13:43,869 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:13:43,886 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 16:13:43,887 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:13:43,890 INFO  L87              Difference]: Start difference. First operand 1237 states. Second operand 4 states.
[2020-09-24 16:13:48,421 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:13:48,422 INFO  L93              Difference]: Finished difference Result 2024 states and 2590 transitions.
[2020-09-24 16:13:48,422 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-24 16:13:48,424 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 465
[2020-09-24 16:13:48,427 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:13:48,457 INFO  L225             Difference]: With dead ends: 2024
[2020-09-24 16:13:48,458 INFO  L226             Difference]: Without dead ends: 1455
[2020-09-24 16:13:48,467 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:13:48,494 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1455 states.
[2020-09-24 16:13:48,605 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1448.
[2020-09-24 16:13:48,607 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1448 states.
[2020-09-24 16:13:48,613 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1727 transitions.
[2020-09-24 16:13:48,616 INFO  L78                 Accepts]: Start accepts. Automaton has 1448 states and 1727 transitions. Word has length 465
[2020-09-24 16:13:48,620 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:13:48,620 INFO  L479      AbstractCegarLoop]: Abstraction has 1448 states and 1727 transitions.
[2020-09-24 16:13:48,620 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 16:13:48,621 INFO  L276                IsEmpty]: Start isEmpty. Operand 1448 states and 1727 transitions.
[2020-09-24 16:13:48,633 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 466
[2020-09-24 16:13:48,634 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:13:48,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:13:48,635 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:13:48,635 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:13:48,636 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:13:48,636 INFO  L82        PathProgramCache]: Analyzing trace with hash 888544568, now seen corresponding path program 1 times
[2020-09-24 16:13:48,637 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:13:48,637 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098207210]
[2020-09-24 16:13:48,638 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:13:48,874 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:13:48,885 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:13:48,885 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:13:48,886 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:13:48,886 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:13:48,886 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 472
[2020-09-24 16:13:48,886 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:13:48,886 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 16:13:48,887 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:13:48,887 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 16:13:48,887 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 179
[2020-09-24 16:13:48,887 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 71
[2020-09-24 16:13:48,888 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:13:49,372 WARN  L193               SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2020-09-24 16:13:49,373 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:13:49,385 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:13:49,387 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:13:49,387 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:13:49,388 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:13:49,388 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:13:49,388 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-09-24 16:13:49,389 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:13:49,389 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:13:49,389 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:13:49,396 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:13:49,397 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:13:49,397 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:13:49,397 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 7
[2020-09-24 16:13:49,670 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 16:13:49,671 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098207210]
[2020-09-24 16:13:49,671 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:13:49,671 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 16:13:49,672 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470128964]
[2020-09-24 16:13:49,674 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 16:13:49,675 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:13:49,675 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 16:13:49,675 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 16:13:49,675 INFO  L87              Difference]: Start difference. First operand 1448 states and 1727 transitions. Second operand 5 states.
[2020-09-24 16:13:55,812 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:13:55,813 INFO  L93              Difference]: Finished difference Result 3896 states and 4702 transitions.
[2020-09-24 16:13:55,816 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 16:13:55,816 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 465
[2020-09-24 16:13:55,817 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:13:55,830 INFO  L225             Difference]: With dead ends: 3896
[2020-09-24 16:13:55,830 INFO  L226             Difference]: Without dead ends: 2640
[2020-09-24 16:13:55,836 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 16:13:55,840 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2640 states.
[2020-09-24 16:13:55,908 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2513.
[2020-09-24 16:13:55,908 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2513 states.
[2020-09-24 16:13:55,916 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 3033 transitions.
[2020-09-24 16:13:55,917 INFO  L78                 Accepts]: Start accepts. Automaton has 2513 states and 3033 transitions. Word has length 465
[2020-09-24 16:13:55,917 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:13:55,918 INFO  L479      AbstractCegarLoop]: Abstraction has 2513 states and 3033 transitions.
[2020-09-24 16:13:55,918 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 16:13:55,918 INFO  L276                IsEmpty]: Start isEmpty. Operand 2513 states and 3033 transitions.
[2020-09-24 16:13:55,929 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 467
[2020-09-24 16:13:55,929 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:13:55,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:13:55,930 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 16:13:55,930 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:13:55,930 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:13:55,931 INFO  L82        PathProgramCache]: Analyzing trace with hash 481500190, now seen corresponding path program 1 times
[2020-09-24 16:13:55,931 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:13:55,931 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950409608]
[2020-09-24 16:13:55,932 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:13:56,014 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:13:56,019 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:13:56,019 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:13:56,019 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:13:56,019 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:13:56,019 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 473
[2020-09-24 16:13:56,020 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:13:56,020 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:13:56,020 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:13:56,020 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:13:56,020 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 186
[2020-09-24 16:13:56,021 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:13:56,021 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:13:56,509 WARN  L193               SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2020-09-24 16:13:56,511 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:13:56,520 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:13:56,522 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:13:56,523 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:13:56,523 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:13:56,523 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:13:56,524 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-09-24 16:13:56,524 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:13:56,524 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:13:56,525 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:13:56,525 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:13:56,525 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:13:56,526 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:13:56,526 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:13:56,853 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 16:13:56,853 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950409608]
[2020-09-24 16:13:56,854 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:13:56,854 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 16:13:56,854 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970860218]
[2020-09-24 16:13:56,855 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 16:13:56,856 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:13:56,856 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 16:13:56,856 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:13:56,856 INFO  L87              Difference]: Start difference. First operand 2513 states and 3033 transitions. Second operand 4 states.
[2020-09-24 16:14:01,422 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:14:01,423 INFO  L93              Difference]: Finished difference Result 7118 states and 8654 transitions.
[2020-09-24 16:14:01,424 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-24 16:14:01,424 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 466
[2020-09-24 16:14:01,424 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:14:01,445 INFO  L225             Difference]: With dead ends: 7118
[2020-09-24 16:14:01,445 INFO  L226             Difference]: Without dead ends: 4831
[2020-09-24 16:14:01,451 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:14:01,457 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4831 states.
[2020-09-24 16:14:01,537 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4831 to 2515.
[2020-09-24 16:14:01,538 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2515 states.
[2020-09-24 16:14:01,545 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 3035 transitions.
[2020-09-24 16:14:01,545 INFO  L78                 Accepts]: Start accepts. Automaton has 2515 states and 3035 transitions. Word has length 466
[2020-09-24 16:14:01,545 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:14:01,546 INFO  L479      AbstractCegarLoop]: Abstraction has 2515 states and 3035 transitions.
[2020-09-24 16:14:01,546 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 16:14:01,546 INFO  L276                IsEmpty]: Start isEmpty. Operand 2515 states and 3035 transitions.
[2020-09-24 16:14:01,557 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 468
[2020-09-24 16:14:01,557 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:14:01,558 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:14:01,558 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 16:14:01,558 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:14:01,558 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:14:01,559 INFO  L82        PathProgramCache]: Analyzing trace with hash 1054735442, now seen corresponding path program 1 times
[2020-09-24 16:14:01,559 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:14:01,559 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945329448]
[2020-09-24 16:14:01,560 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:14:01,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:14:01,768 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:14:01,769 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:14:01,769 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:14:01,769 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:14:01,769 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 474
[2020-09-24 16:14:01,770 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:14:01,770 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 16:14:01,774 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:14:01,775 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 16:14:01,775 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 181
[2020-09-24 16:14:01,776 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 78
[2020-09-24 16:14:01,776 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:14:02,333 WARN  L193               SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2020-09-24 16:14:02,334 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:14:02,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:14:02,427 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:14:02,427 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:14:02,427 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:14:02,427 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:14:02,427 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-09-24 16:14:02,427 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:14:02,428 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 0
[2020-09-24 16:14:02,428 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:14:02,428 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:14:02,428 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:14:02,428 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:14:02,429 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:14:02,834 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 16:14:02,834 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945329448]
[2020-09-24 16:14:02,835 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:14:02,835 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 16:14:02,836 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047664437]
[2020-09-24 16:14:02,837 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 16:14:02,837 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:14:02,838 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 16:14:02,838 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 16:14:02,838 INFO  L87              Difference]: Start difference. First operand 2515 states and 3035 transitions. Second operand 5 states.
[2020-09-24 16:14:08,516 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:14:08,517 INFO  L93              Difference]: Finished difference Result 6969 states and 8451 transitions.
[2020-09-24 16:14:08,517 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 16:14:08,518 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 467
[2020-09-24 16:14:08,518 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:14:08,540 INFO  L225             Difference]: With dead ends: 6969
[2020-09-24 16:14:08,540 INFO  L226             Difference]: Without dead ends: 4683
[2020-09-24 16:14:08,546 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 16:14:08,551 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4683 states.
[2020-09-24 16:14:08,656 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4683 to 4556.
[2020-09-24 16:14:08,656 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4556 states.
[2020-09-24 16:14:08,675 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 5513 transitions.
[2020-09-24 16:14:08,675 INFO  L78                 Accepts]: Start accepts. Automaton has 4556 states and 5513 transitions. Word has length 467
[2020-09-24 16:14:08,676 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:14:08,676 INFO  L479      AbstractCegarLoop]: Abstraction has 4556 states and 5513 transitions.
[2020-09-24 16:14:08,676 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 16:14:08,676 INFO  L276                IsEmpty]: Start isEmpty. Operand 4556 states and 5513 transitions.
[2020-09-24 16:14:08,689 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 469
[2020-09-24 16:14:08,690 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:14:08,690 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:14:08,690 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 16:14:08,691 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:14:08,691 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:14:08,691 INFO  L82        PathProgramCache]: Analyzing trace with hash 2011953776, now seen corresponding path program 1 times
[2020-09-24 16:14:08,691 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:14:08,692 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533160151]
[2020-09-24 16:14:08,692 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:14:08,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:14:08,804 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:14:08,804 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:14:08,804 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:14:08,804 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:14:08,805 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 475
[2020-09-24 16:14:08,805 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:14:08,805 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:14:08,805 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:14:08,805 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:14:08,806 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 194
[2020-09-24 16:14:08,806 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:14:08,806 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:14:09,144 WARN  L193               SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2020-09-24 16:14:09,146 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:14:09,152 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:14:09,153 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:14:09,154 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:14:09,154 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:14:09,154 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:14:09,154 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-09-24 16:14:09,154 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:14:09,155 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 16:14:09,155 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:14:09,155 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:14:09,155 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:14:09,155 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:14:09,156 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:14:09,296 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 16:14:09,296 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533160151]
[2020-09-24 16:14:09,296 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:14:09,296 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 16:14:09,297 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255227966]
[2020-09-24 16:14:09,297 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 16:14:09,298 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:14:09,298 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 16:14:09,298 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:14:09,298 INFO  L87              Difference]: Start difference. First operand 4556 states and 5513 transitions. Second operand 4 states.
[2020-09-24 16:14:13,716 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:14:13,717 INFO  L93              Difference]: Finished difference Result 13184 states and 16011 transitions.
[2020-09-24 16:14:13,717 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-24 16:14:13,717 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 468
[2020-09-24 16:14:13,718 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:14:13,744 INFO  L225             Difference]: With dead ends: 13184
[2020-09-24 16:14:13,744 INFO  L226             Difference]: Without dead ends: 8877
[2020-09-24 16:14:13,753 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:14:13,762 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8877 states.
[2020-09-24 16:14:13,895 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8877 to 4560.
[2020-09-24 16:14:13,895 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4560 states.
[2020-09-24 16:14:13,902 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 5517 transitions.
[2020-09-24 16:14:13,902 INFO  L78                 Accepts]: Start accepts. Automaton has 4560 states and 5517 transitions. Word has length 468
[2020-09-24 16:14:13,903 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:14:13,903 INFO  L479      AbstractCegarLoop]: Abstraction has 4560 states and 5517 transitions.
[2020-09-24 16:14:13,903 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 16:14:13,903 INFO  L276                IsEmpty]: Start isEmpty. Operand 4560 states and 5517 transitions.
[2020-09-24 16:14:13,913 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 470
[2020-09-24 16:14:13,913 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:14:13,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:14:13,914 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 16:14:13,914 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:14:13,914 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:14:13,914 INFO  L82        PathProgramCache]: Analyzing trace with hash 120554772, now seen corresponding path program 1 times
[2020-09-24 16:14:13,915 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:14:13,915 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829312157]
[2020-09-24 16:14:13,915 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:14:14,046 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:14:14,053 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:14:14,054 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:14:14,054 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:14:14,054 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:14:14,056 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 476
[2020-09-24 16:14:14,057 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:14:14,057 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 16:14:14,057 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:14:14,057 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 16:14:14,057 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 183
[2020-09-24 16:14:14,058 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 85
[2020-09-24 16:14:14,058 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:14:14,528 WARN  L193               SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2020-09-24 16:14:14,529 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:14:14,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:14:14,539 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:14:14,539 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:14:14,539 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:14:14,540 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:14:14,540 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-09-24 16:14:14,540 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:14:14,541 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:14:14,541 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:14:14,541 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:14:14,542 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:14:14,542 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:14:14,542 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:14:15,022 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 16:14:15,022 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829312157]
[2020-09-24 16:14:15,024 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:14:15,024 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 16:14:15,025 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490786505]
[2020-09-24 16:14:15,026 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 16:14:15,026 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:14:15,027 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 16:14:15,027 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 16:14:15,027 INFO  L87              Difference]: Start difference. First operand 4560 states and 5517 transitions. Second operand 5 states.
[2020-09-24 16:14:21,518 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:14:21,519 INFO  L93              Difference]: Finished difference Result 12037 states and 14582 transitions.
[2020-09-24 16:14:21,519 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 16:14:21,519 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 469
[2020-09-24 16:14:21,520 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:14:21,546 INFO  L225             Difference]: With dead ends: 12037
[2020-09-24 16:14:21,547 INFO  L226             Difference]: Without dead ends: 7732
[2020-09-24 16:14:21,553 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 16:14:21,561 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7732 states.
[2020-09-24 16:14:21,742 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7732 to 7605.
[2020-09-24 16:14:21,742 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7605 states.
[2020-09-24 16:14:21,749 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7605 states to 7605 states and 9168 transitions.
[2020-09-24 16:14:21,749 INFO  L78                 Accepts]: Start accepts. Automaton has 7605 states and 9168 transitions. Word has length 469
[2020-09-24 16:14:21,749 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:14:21,749 INFO  L479      AbstractCegarLoop]: Abstraction has 7605 states and 9168 transitions.
[2020-09-24 16:14:21,749 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 16:14:21,750 INFO  L276                IsEmpty]: Start isEmpty. Operand 7605 states and 9168 transitions.
[2020-09-24 16:14:21,764 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 471
[2020-09-24 16:14:21,764 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:14:21,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:14:21,765 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 16:14:21,765 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:14:21,765 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:14:21,765 INFO  L82        PathProgramCache]: Analyzing trace with hash -2145778150, now seen corresponding path program 1 times
[2020-09-24 16:14:21,766 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:14:21,766 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73629276]
[2020-09-24 16:14:21,766 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:14:21,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:14:21,831 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:14:21,832 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:14:21,832 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:14:21,832 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:14:21,832 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 477
[2020-09-24 16:14:21,832 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:14:21,833 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:14:21,833 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:14:21,833 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:14:21,833 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 202
[2020-09-24 16:14:21,833 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-24 16:14:21,833 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:14:22,213 WARN  L193               SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2020-09-24 16:14:22,214 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:14:22,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:14:22,223 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:14:22,223 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:14:22,224 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:14:22,224 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:14:22,224 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-09-24 16:14:22,225 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:14:22,225 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 16:14:22,225 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:14:22,226 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:14:22,226 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:14:22,226 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:14:22,227 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:14:22,526 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 16:14:22,527 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73629276]
[2020-09-24 16:14:22,528 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:14:22,529 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 16:14:22,529 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493653517]
[2020-09-24 16:14:22,530 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 16:14:22,531 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:14:22,531 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 16:14:22,531 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:14:22,532 INFO  L87              Difference]: Start difference. First operand 7605 states and 9168 transitions. Second operand 4 states.
[2020-09-24 16:14:27,023 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:14:27,024 INFO  L93              Difference]: Finished difference Result 21817 states and 26360 transitions.
[2020-09-24 16:14:27,024 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-24 16:14:27,024 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 470
[2020-09-24 16:14:27,025 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:14:27,053 INFO  L225             Difference]: With dead ends: 21817
[2020-09-24 16:14:27,053 INFO  L226             Difference]: Without dead ends: 14879
[2020-09-24 16:14:27,063 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 16:14:27,077 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14879 states.
[2020-09-24 16:14:27,311 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14879 to 7613.
[2020-09-24 16:14:27,311 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7613 states.
[2020-09-24 16:14:27,321 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7613 states to 7613 states and 9176 transitions.
[2020-09-24 16:14:27,322 INFO  L78                 Accepts]: Start accepts. Automaton has 7613 states and 9176 transitions. Word has length 470
[2020-09-24 16:14:27,322 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:14:27,322 INFO  L479      AbstractCegarLoop]: Abstraction has 7613 states and 9176 transitions.
[2020-09-24 16:14:27,322 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 16:14:27,323 INFO  L276                IsEmpty]: Start isEmpty. Operand 7613 states and 9176 transitions.
[2020-09-24 16:14:27,334 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 472
[2020-09-24 16:14:27,334 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:14:27,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:14:27,335 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-09-24 16:14:27,335 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:14:27,335 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:14:27,335 INFO  L82        PathProgramCache]: Analyzing trace with hash 37669246, now seen corresponding path program 1 times
[2020-09-24 16:14:27,336 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:14:27,336 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432610946]
[2020-09-24 16:14:27,336 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:14:27,484 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 16:14:27,495 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 16:14:27,496 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 16:14:27,504 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-09-24 16:14:27,570 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:14:27 BoogieIcfgContainer
[2020-09-24 16:14:27,571 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 16:14:27,573 INFO  L168              Benchmark]: Toolchain (without parser) took 49313.34 ms. Allocated memory was 140.0 MB in the beginning and 990.9 MB in the end (delta: 850.9 MB). Free memory was 101.2 MB in the beginning and 585.4 MB in the end (delta: -484.2 MB). Peak memory consumption was 366.7 MB. Max. memory is 7.1 GB.
[2020-09-24 16:14:27,574 INFO  L168              Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-24 16:14:27,575 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 1253.31 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 100.6 MB in the beginning and 160.1 MB in the end (delta: -59.5 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB.
[2020-09-24 16:14:27,575 INFO  L168              Benchmark]: Boogie Preprocessor took 144.97 ms. Allocated memory is still 203.9 MB. Free memory was 160.1 MB in the beginning and 155.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB.
[2020-09-24 16:14:27,576 INFO  L168              Benchmark]: RCFGBuilder took 2115.60 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 155.1 MB in the beginning and 190.1 MB in the end (delta: -34.9 MB). Peak memory consumption was 108.9 MB. Max. memory is 7.1 GB.
[2020-09-24 16:14:27,577 INFO  L168              Benchmark]: TraceAbstraction took 45789.50 ms. Allocated memory was 248.0 MB in the beginning and 990.9 MB in the end (delta: 742.9 MB). Free memory was 188.3 MB in the beginning and 585.4 MB in the end (delta: -397.1 MB). Peak memory consumption was 345.8 MB. Max. memory is 7.1 GB.
[2020-09-24 16:14:27,581 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 1253.31 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 100.6 MB in the beginning and 160.1 MB in the end (delta: -59.5 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 144.97 ms. Allocated memory is still 203.9 MB. Free memory was 160.1 MB in the beginning and 155.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 2115.60 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 155.1 MB in the beginning and 190.1 MB in the end (delta: -34.9 MB). Peak memory consumption was 108.9 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 45789.50 ms. Allocated memory was 248.0 MB in the beginning and 990.9 MB in the end (delta: 742.9 MB). Free memory was 188.3 MB in the beginning and 585.4 MB in the end (delta: -397.1 MB). Peak memory consumption was 345.8 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 871]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L1]                 int __return_main;
[L14]                msg_t nomsg = (msg_t )-1;
[L15]                port_t p12 = 0;
[L16]                char p12_old = '\x0';
[L17]                char p12_new = '\x0';
[L18]                _Bool ep12 = 0;
[L19]                port_t p13 = 0;
[L20]                char p13_old = '\x0';
[L21]                char p13_new = '\x0';
[L22]                _Bool ep13 = 0;
[L23]                port_t p21 = 0;
[L24]                char p21_old = '\x0';
[L25]                char p21_new = '\x0';
[L26]                _Bool ep21 = 0;
[L27]                port_t p23 = 0;
[L28]                char p23_old = '\x0';
[L29]                char p23_new = '\x0';
[L30]                _Bool ep23 = 0;
[L31]                port_t p31 = 0;
[L32]                char p31_old = '\x0';
[L33]                char p31_new = '\x0';
[L34]                _Bool ep31 = 0;
[L35]                port_t p32 = 0;
[L36]                char p32_old = '\x0';
[L37]                char p32_new = '\x0';
[L38]                _Bool ep32 = 0;
[L39]                char id1 = '\x0';
[L40]                char r1 = '\x0';
[L41]                char st1 = '\x0';
[L42]                char nl1 = '\x0';
[L43]                char m1 = '\x0';
[L44]                char max1 = '\x0';
[L45]                _Bool mode1 = 0;
[L46]                _Bool newmax1 = 0;
[L47]                char id2 = '\x0';
[L48]                char r2 = '\x0';
[L49]                char st2 = '\x0';
[L50]                char nl2 = '\x0';
[L51]                char m2 = '\x0';
[L52]                char max2 = '\x0';
[L53]                _Bool mode2 = 0;
[L54]                _Bool newmax2 = 0;
[L55]                char id3 = '\x0';
[L56]                char r3 = '\x0';
[L57]                char st3 = '\x0';
[L58]                char nl3 = '\x0';
[L59]                char m3 = '\x0';
[L60]                char max3 = '\x0';
[L61]                _Bool mode3 = 0;
[L62]                _Bool newmax3 = 0;
[L66]                void (*nodes[3])() = { &node1, &node2, &node3 };
[L70]                int __return_1863;
[L71]                int __return_2009;
[L72]                int __return_2142;
[L73]                int __return_2281;
[L74]                int __return_3069;
[L75]                int __return_3038;
[L76]                int __return_2975;
[L77]                int __return_2941;
[L78]                int __tmp_2420_0;
[L79]                int __return_2543;
[L80]                int __return_2433;
[L81]                int __return_2828;
[L82]                int __return_2794;
[L83]                int __return_2710;
[L84]                int __return_2419;
[L87]                int main__c1;
[L88]                int main__i2;
[L89]                main__c1 = 0
[L90]                ep12 = __VERIFIER_nondet_bool()
[L91]                ep13 = __VERIFIER_nondet_bool()
[L92]                ep21 = __VERIFIER_nondet_bool()
[L93]                ep23 = __VERIFIER_nondet_bool()
[L94]                ep31 = __VERIFIER_nondet_bool()
[L95]                ep32 = __VERIFIER_nondet_bool()
[L96]                id1 = __VERIFIER_nondet_char()
[L97]                r1 = __VERIFIER_nondet_char()
[L98]                st1 = __VERIFIER_nondet_char()
[L99]                nl1 = __VERIFIER_nondet_char()
[L100]               m1 = __VERIFIER_nondet_char()
[L101]               max1 = __VERIFIER_nondet_char()
[L102]               mode1 = __VERIFIER_nondet_bool()
[L103]               newmax1 = __VERIFIER_nondet_bool()
[L104]               id2 = __VERIFIER_nondet_char()
[L105]               r2 = __VERIFIER_nondet_char()
[L106]               st2 = __VERIFIER_nondet_char()
[L107]               nl2 = __VERIFIER_nondet_char()
[L108]               m2 = __VERIFIER_nondet_char()
[L109]               max2 = __VERIFIER_nondet_char()
[L110]               mode2 = __VERIFIER_nondet_bool()
[L111]               newmax2 = __VERIFIER_nondet_bool()
[L112]               id3 = __VERIFIER_nondet_char()
[L113]               r3 = __VERIFIER_nondet_char()
[L114]               st3 = __VERIFIER_nondet_char()
[L115]               nl3 = __VERIFIER_nondet_char()
[L116]               m3 = __VERIFIER_nondet_char()
[L117]               max3 = __VERIFIER_nondet_char()
[L118]               mode3 = __VERIFIER_nondet_bool()
[L119]               newmax3 = __VERIFIER_nondet_bool()
[L121]               _Bool init__r121;
[L122]               _Bool init__r131;
[L123]               _Bool init__r211;
[L124]               _Bool init__r231;
[L125]               _Bool init__r311;
[L126]               _Bool init__r321;
[L127]               _Bool init__r122;
[L128]               int init__tmp;
[L129]               _Bool init__r132;
[L130]               int init__tmp___0;
[L131]               _Bool init__r212;
[L132]               int init__tmp___1;
[L133]               _Bool init__r232;
[L134]               int init__tmp___2;
[L135]               _Bool init__r312;
[L136]               int init__tmp___3;
[L137]               _Bool init__r322;
[L138]               int init__tmp___4;
[L139]               int init__tmp___5;
[L140]               init__r121 = ep12
[L141]               init__r131 = ep13
[L142]               init__r211 = ep21
[L143]               init__r231 = ep23
[L144]               init__r311 = ep31
[L145]               init__r321 = ep32
[L146]   COND FALSE  !(!(init__r121 == 0))
[L3140]  COND FALSE  !(!(init__r131 == 0))
[L3156]              init__tmp = 0
[L150]               init__r122 = (_Bool)init__tmp
[L151]   COND FALSE  !(!(init__r131 == 0))
[L3117]  COND FALSE  !(!(init__r121 == 0))
[L3133]              init__tmp___0 = 0
[L155]               init__r132 = (_Bool)init__tmp___0
[L156]   COND FALSE  !(!(init__r211 == 0))
[L3094]  COND FALSE  !(!(init__r231 == 0))
[L3110]              init__tmp___1 = 0
[L160]               init__r212 = (_Bool)init__tmp___1
[L161]   COND FALSE  !(!(init__r231 == 0))
[L3071]  COND FALSE  !(!(init__r211 == 0))
[L3087]              init__tmp___2 = 0
[L165]               init__r232 = (_Bool)init__tmp___2
[L166]   COND FALSE  !(!(init__r311 == 0))
[L3048]  COND FALSE  !(!(init__r321 == 0))
[L3064]              init__tmp___3 = 0
[L170]               init__r312 = (_Bool)init__tmp___3
[L171]   COND FALSE  !(!(init__r321 == 0))
[L3025]  COND FALSE  !(!(init__r311 == 0))
[L3041]              init__tmp___4 = 0
[L175]               init__r322 = (_Bool)init__tmp___4
[L176]   COND TRUE   ((int)id1) != ((int)id2)
[L178]   COND TRUE   ((int)id1) != ((int)id3)
[L180]   COND TRUE   ((int)id2) != ((int)id3)
[L182]   COND TRUE   ((int)id1) >= 0
[L184]   COND TRUE   ((int)id2) >= 0
[L186]   COND TRUE   ((int)id3) >= 0
[L188]   COND TRUE   ((int)r1) == 0
[L190]   COND TRUE   ((int)r2) == 0
[L192]   COND TRUE   ((int)r3) == 0
[L194]   COND TRUE   ((int)max1) == ((int)id1)
[L196]   COND TRUE   ((int)max2) == ((int)id2)
[L198]   COND TRUE   ((int)max3) == ((int)id3)
[L200]   COND TRUE   ((int)st1) == 0
[L202]   COND TRUE   ((int)st2) == 0
[L204]   COND TRUE   ((int)st3) == 0
[L206]   COND TRUE   ((int)nl1) == 0
[L208]   COND TRUE   ((int)nl2) == 0
[L210]   COND TRUE   ((int)nl3) == 0
[L212]   COND TRUE   ((int)mode1) == 0
[L214]   COND TRUE   ((int)mode2) == 0
[L216]   COND TRUE   ((int)mode3) == 0
[L218]   COND TRUE   !(newmax1 == 0)
[L220]   COND TRUE   !(newmax2 == 0)
[L222]   COND TRUE   !(newmax3 == 0)
[L224]               init__tmp___5 = 1
[L225]               __return_1863 = init__tmp___5
[L226]               main__i2 = __return_1863
[L227]   COND TRUE   main__i2 != 0
[L229]               p12_old = nomsg
[L230]               p12_new = nomsg
[L231]               p13_old = nomsg
[L232]               p13_new = nomsg
[L233]               p21_old = nomsg
[L234]               p21_new = nomsg
[L235]               p23_old = nomsg
[L236]               p23_new = nomsg
[L237]               p31_old = nomsg
[L238]               p31_new = nomsg
[L239]               p32_old = nomsg
[L240]               p32_new = nomsg
[L241]               main__i2 = 0
[L242]   COND TRUE   main__i2 < 6
[L245]               _Bool node1__newmax;
[L246]               node1__newmax = 0
[L247]   COND FALSE  !(!(mode1 == 0))
[L253]   COND TRUE   ((int)r1) < 2
[L255]   COND FALSE  !(!(ep12 == 0))
[L268]   COND FALSE  !(!(ep13 == 0))
[L281]               mode1 = 1
[L283]               _Bool node2__newmax;
[L284]               node2__newmax = 0
[L285]   COND FALSE  !(!(mode2 == 0))
[L291]   COND TRUE   ((int)r2) < 2
[L293]   COND FALSE  !(!(ep21 == 0))
[L306]   COND FALSE  !(!(ep23 == 0))
[L319]               mode2 = 1
[L321]               _Bool node3__newmax;
[L322]               node3__newmax = 0
[L323]   COND FALSE  !(!(mode3 == 0))
[L329]   COND TRUE   ((int)r3) < 2
[L331]   COND FALSE  !(!(ep31 == 0))
[L344]   COND FALSE  !(!(ep32 == 0))
[L357]               mode3 = 1
[L358]               p12_old = p12_new
[L359]               p12_new = nomsg
[L360]               p13_old = p13_new
[L361]               p13_new = nomsg
[L362]               p21_old = p21_new
[L363]               p21_new = nomsg
[L364]               p23_old = p23_new
[L365]               p23_new = nomsg
[L366]               p31_old = p31_new
[L367]               p31_new = nomsg
[L368]               p32_old = p32_new
[L369]               p32_new = nomsg
[L371]               int check__tmp;
[L372]   COND TRUE   ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1
[L374]   COND TRUE   (((int)st1) + ((int)nl1)) <= 1
[L376]   COND TRUE   (((int)st2) + ((int)nl2)) <= 1
[L378]   COND TRUE   (((int)st3) + ((int)nl3)) <= 1
[L380]   COND FALSE  !(((int)r1) >= 2)
[L386]   COND TRUE   ((((int)st1) + ((int)st2)) + ((int)st3)) == 0
[L388]   COND TRUE   ((int)r1) < 2
[L390]   COND FALSE  !(((int)r1) >= 2)
[L396]   COND TRUE   ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0
[L398]   COND TRUE   ((int)r1) < 2
[L400]               check__tmp = 1
[L401]               __return_2009 = check__tmp
[L402]               main__c1 = __return_2009
[L404]               _Bool __tmp_1;
[L405]               __tmp_1 = main__c1
[L406]               _Bool assert__arg;
[L407]               assert__arg = __tmp_1
[L408]   COND FALSE  !(assert__arg == 0)
[L414]               int main____CPAchecker_TMP_0 = main__i2;
[L415]               main__i2 = main__i2 + 1
[L416]   COND TRUE   main__i2 < 6
[L419]               _Bool node1__newmax;
[L420]               node1__newmax = 0
[L421]   COND TRUE   !(mode1 == 0)
[L423]               r1 = (char)(((int)r1) + 1)
[L424]   COND FALSE  !(!(ep21 == 0))
[L433]   COND FALSE  !(!(ep31 == 0))
[L442]               newmax1 = node1__newmax
[L443]   COND FALSE  !(((int)r1) == 2)
[L449]               mode1 = 0
[L451]               _Bool node2__newmax;
[L452]               node2__newmax = 0
[L453]   COND TRUE   !(mode2 == 0)
[L455]               r2 = (char)(((int)r2) + 1)
[L456]   COND FALSE  !(!(ep12 == 0))
[L465]   COND FALSE  !(!(ep32 == 0))
[L474]               newmax2 = node2__newmax
[L475]   COND FALSE  !(((int)r2) == 2)
[L481]               mode2 = 0
[L483]               _Bool node3__newmax;
[L484]               node3__newmax = 0
[L485]   COND TRUE   !(mode3 == 0)
[L487]               r3 = (char)(((int)r3) + 1)
[L488]   COND FALSE  !(!(ep13 == 0))
[L497]   COND FALSE  !(!(ep23 == 0))
[L506]               newmax3 = node3__newmax
[L507]   COND FALSE  !(((int)r3) == 2)
[L513]               mode3 = 0
[L514]               p12_old = p12_new
[L515]               p12_new = nomsg
[L516]               p13_old = p13_new
[L517]               p13_new = nomsg
[L518]               p21_old = p21_new
[L519]               p21_new = nomsg
[L520]               p23_old = p23_new
[L521]               p23_new = nomsg
[L522]               p31_old = p31_new
[L523]               p31_new = nomsg
[L524]               p32_old = p32_new
[L525]               p32_new = nomsg
[L527]               int check__tmp;
[L528]   COND TRUE   ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1
[L530]   COND TRUE   (((int)st1) + ((int)nl1)) <= 1
[L532]   COND TRUE   (((int)st2) + ((int)nl2)) <= 1
[L534]   COND TRUE   (((int)st3) + ((int)nl3)) <= 1
[L536]   COND FALSE  !(((int)r1) >= 2)
[L542]   COND TRUE   ((((int)st1) + ((int)st2)) + ((int)st3)) == 0
[L544]   COND TRUE   ((int)r1) < 2
[L546]   COND FALSE  !(((int)r1) >= 2)
[L552]   COND TRUE   ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0
[L554]   COND TRUE   ((int)r1) < 2
[L556]               check__tmp = 1
[L557]               __return_2142 = check__tmp
[L558]               main__c1 = __return_2142
[L560]               _Bool __tmp_2;
[L561]               __tmp_2 = main__c1
[L562]               _Bool assert__arg;
[L563]               assert__arg = __tmp_2
[L564]   COND FALSE  !(assert__arg == 0)
[L570]               int main____CPAchecker_TMP_0 = main__i2;
[L571]               main__i2 = main__i2 + 1
[L572]   COND TRUE   main__i2 < 6
[L575]               _Bool node1__newmax;
[L576]               node1__newmax = 0
[L577]   COND FALSE  !(!(mode1 == 0))
[L583]   COND TRUE   ((int)r1) < 2
[L585]   COND FALSE  !(!(ep12 == 0))
[L598]   COND FALSE  !(!(ep13 == 0))
[L611]               mode1 = 1
[L613]               _Bool node2__newmax;
[L614]               node2__newmax = 0
[L615]   COND FALSE  !(!(mode2 == 0))
[L621]   COND TRUE   ((int)r2) < 2
[L623]   COND FALSE  !(!(ep21 == 0))
[L636]   COND FALSE  !(!(ep23 == 0))
[L649]               mode2 = 1
[L651]               _Bool node3__newmax;
[L652]               node3__newmax = 0
[L653]   COND FALSE  !(!(mode3 == 0))
[L659]   COND TRUE   ((int)r3) < 2
[L661]   COND FALSE  !(!(ep31 == 0))
[L674]   COND FALSE  !(!(ep32 == 0))
[L687]               mode3 = 1
[L688]               p12_old = p12_new
[L689]               p12_new = nomsg
[L690]               p13_old = p13_new
[L691]               p13_new = nomsg
[L692]               p21_old = p21_new
[L693]               p21_new = nomsg
[L694]               p23_old = p23_new
[L695]               p23_new = nomsg
[L696]               p31_old = p31_new
[L697]               p31_new = nomsg
[L698]               p32_old = p32_new
[L699]               p32_new = nomsg
[L701]               int check__tmp;
[L702]   COND TRUE   ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1
[L704]   COND TRUE   (((int)st1) + ((int)nl1)) <= 1
[L706]   COND TRUE   (((int)st2) + ((int)nl2)) <= 1
[L708]   COND TRUE   (((int)st3) + ((int)nl3)) <= 1
[L710]   COND FALSE  !(((int)r1) >= 2)
[L716]   COND TRUE   ((((int)st1) + ((int)st2)) + ((int)st3)) == 0
[L718]   COND TRUE   ((int)r1) < 2
[L720]   COND FALSE  !(((int)r1) >= 2)
[L726]   COND TRUE   ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0
[L728]   COND TRUE   ((int)r1) < 2
[L730]               check__tmp = 1
[L731]               __return_2281 = check__tmp
[L732]               main__c1 = __return_2281
[L734]               _Bool __tmp_3;
[L735]               __tmp_3 = main__c1
[L736]               _Bool assert__arg;
[L737]               assert__arg = __tmp_3
[L738]   COND FALSE  !(assert__arg == 0)
[L744]               int main____CPAchecker_TMP_0 = main__i2;
[L745]               main__i2 = main__i2 + 1
[L746]   COND TRUE   main__i2 < 6
[L749]               _Bool node1__newmax;
[L750]               node1__newmax = 0
[L751]   COND TRUE   !(mode1 == 0)
[L753]               r1 = (char)(((int)r1) + 1)
[L754]   COND FALSE  !(!(ep21 == 0))
[L763]   COND FALSE  !(!(ep31 == 0))
[L772]               newmax1 = node1__newmax
[L773]   COND TRUE   ((int)r1) == 2
[L775]   COND TRUE   ((int)max1) == ((int)id1)
[L777]               st1 = 1
[L778]               mode1 = 0
[L780]               _Bool node2__newmax;
[L781]               node2__newmax = 0
[L782]   COND TRUE   !(mode2 == 0)
[L784]               r2 = (char)(((int)r2) + 1)
[L785]   COND FALSE  !(!(ep12 == 0))
[L794]   COND FALSE  !(!(ep32 == 0))
[L803]               newmax2 = node2__newmax
[L804]   COND TRUE   ((int)r2) == 2
[L806]   COND TRUE   ((int)max2) == ((int)id2)
[L808]               st2 = 1
[L809]               mode2 = 0
[L811]               _Bool node3__newmax;
[L812]               node3__newmax = 0
[L813]   COND TRUE   !(mode3 == 0)
[L815]               r3 = (char)(((int)r3) + 1)
[L816]   COND FALSE  !(!(ep13 == 0))
[L825]   COND FALSE  !(!(ep23 == 0))
[L834]               newmax3 = node3__newmax
[L835]   COND TRUE   ((int)r3) == 2
[L837]   COND TRUE   ((int)max3) == ((int)id3)
[L839]               st3 = 1
[L840]               mode3 = 0
[L841]               p12_old = p12_new
[L842]               p12_new = nomsg
[L843]               p13_old = p13_new
[L844]               p13_new = nomsg
[L845]               p21_old = p21_new
[L846]               p21_new = nomsg
[L847]               p23_old = p23_new
[L848]               p23_new = nomsg
[L849]               p31_old = p31_new
[L850]               p31_new = nomsg
[L851]               p32_old = p32_new
[L852]               p32_new = nomsg
[L854]               int check__tmp;
[L855]   COND FALSE  !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1)
[L861]               check__tmp = 0
[L862]               __return_3069 = check__tmp
[L863]               main__c1 = __return_3069
[L865]               _Bool __tmp_4;
[L866]               __tmp_4 = main__c1
[L867]               _Bool assert__arg;
[L868]               assert__arg = __tmp_4
[L869]   COND TRUE   assert__arg == 0
[L871]               __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 1242 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 36.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12020 SDtfs, 10971 SDslu, 8916 SDs, 0 SdLazy, 12317 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7613occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 14287 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 3741 NumberOfCodeBlocks, 3741 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 3263 ConstructedInterpolants, 0 QuantifiedInterpolants, 3159456 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...