/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i


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


This is Ultimate 0.1.25-c90d42b
[2020-09-25 13:38:03,805 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-25 13:38:03,810 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 13:38:03,851 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 13:38:03,851 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 13:38:03,853 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 13:38:03,854 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-25 13:38:03,862 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 13:38:03,864 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 13:38:03,865 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 13:38:03,866 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 13:38:03,867 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 13:38:03,868 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 13:38:03,870 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 13:38:03,872 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 13:38:03,875 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 13:38:03,876 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 13:38:03,878 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 13:38:03,879 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 13:38:03,881 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 13:38:03,882 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 13:38:03,882 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 13:38:03,883 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 13:38:03,883 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 13:38:03,885 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 13:38:03,885 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-09-25 13:38:03,888 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 13:38:03,889 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 13:38:03,889 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 13:38:03,890 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2020-09-25 13:38:03,891 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-25 13:38:03,893 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 13:38:03,893 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
[2020-09-25 13:38:03,920 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-25 13:38:03,920 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 13:38:03,921 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 13:38:03,921 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-25 13:38:03,922 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-25 13:38:03,922 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 13:38:03,922 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-25 13:38:03,922 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-25 13:38:03,923 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-25 13:38:03,923 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-25 13:38:03,923 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 13:38:03,923 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 13:38:03,923 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 13:38:03,923 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-25 13:38:03,924 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-25 13:38:03,924 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-25 13:38:03,924 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-25 13:38:03,924 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 13:38:03,925 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-25 13:38:03,925 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-25 13:38:03,925 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-25 13:38:03,925 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 13:38:03,925 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 13:38:03,926 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 13:38:03,926 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 13:38:03,926 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-25 13:38:03,926 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 13:38:03,927 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 13:38:03,927 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-25 13:38:03,927 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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true;
[2020-09-25 13:38:04,449 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 13:38:04,474 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 13:38:04,481 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 13:38:04,483 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-25 13:38:04,484 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-25 13:38:04,485 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i
[2020-09-25 13:38:04,561 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0856b9c7/eef033fcc8244c35b66a1d52af172b12/FLAG98c32cc34
[2020-09-25 13:38:05,080 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-25 13:38:05,081 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i
[2020-09-25 13:38:05,090 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0856b9c7/eef033fcc8244c35b66a1d52af172b12/FLAG98c32cc34
[2020-09-25 13:38:05,429 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0856b9c7/eef033fcc8244c35b66a1d52af172b12
[2020-09-25 13:38:05,442 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 13:38:05,449 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 13:38:05,450 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 13:38:05,450 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 13:38:05,454 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 13:38:05,455 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:38:05" (1/1) ...
[2020-09-25 13:38:05,460 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:05, skipping insertion in model container
[2020-09-25 13:38:05,460 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:38:05" (1/1) ...
[2020-09-25 13:38:05,469 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-25 13:38:05,498 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-25 13:38:05,804 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-25 13:38:05,816 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-25 13:38:05,975 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-25 13:38:06,005 INFO  L208         MainTranslator]: Completed translation
[2020-09-25 13:38:06,006 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06 WrapperNode
[2020-09-25 13:38:06,006 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 13:38:06,007 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 13:38:06,008 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 13:38:06,008 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 13:38:06,027 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (1/1) ...
[2020-09-25 13:38:06,029 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (1/1) ...
[2020-09-25 13:38:06,053 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (1/1) ...
[2020-09-25 13:38:06,053 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (1/1) ...
[2020-09-25 13:38:06,084 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (1/1) ...
[2020-09-25 13:38:06,099 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (1/1) ...
[2020-09-25 13:38:06,104 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (1/1) ...
[2020-09-25 13:38:06,115 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 13:38:06,116 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 13:38:06,116 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 13:38:06,116 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-25 13:38:06,118 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (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
[2020-09-25 13:38:06,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 13:38:06,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 13:38:06,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 13:38:06,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure insert
[2020-09-25 13:38:06,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure elem_exists
[2020-09-25 13:38:06,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 13:38:06,200 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 13:38:06,200 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 13:38:06,201 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 13:38:06,201 INFO  L130     BoogieDeclarations]: Found specification of procedure insert
[2020-09-25 13:38:06,201 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 13:38:06,201 INFO  L130     BoogieDeclarations]: Found specification of procedure elem_exists
[2020-09-25 13:38:06,201 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 13:38:06,201 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-25 13:38:06,202 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 13:38:06,202 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 13:38:06,202 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 13:38:06,202 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 13:38:06,755 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 13:38:06,756 INFO  L295             CfgBuilder]: Removed 10 assume(true) statements.
[2020-09-25 13:38:06,767 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:38:06 BoogieIcfgContainer
[2020-09-25 13:38:06,767 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 13:38:06,769 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 13:38:06,769 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 13:38:06,776 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-25 13:38:06,777 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:38:05" (1/3) ...
[2020-09-25 13:38:06,778 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7468d9bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:38:06, skipping insertion in model container
[2020-09-25 13:38:06,778 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:38:06" (2/3) ...
[2020-09-25 13:38:06,778 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7468d9bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:38:06, skipping insertion in model container
[2020-09-25 13:38:06,779 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:38:06" (3/3) ...
[2020-09-25 13:38:06,782 INFO  L109   eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i
[2020-09-25 13:38:06,794 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 13:38:06,805 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 13:38:06,829 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 13:38:06,877 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-25 13:38:06,877 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-25 13:38:06,877 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 13:38:06,877 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 13:38:06,878 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 13:38:06,878 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-25 13:38:06,878 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 13:38:06,878 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 13:38:06,906 INFO  L276                IsEmpty]: Start isEmpty. Operand 132 states.
[2020-09-25 13:38:06,913 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-09-25 13:38:06,913 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 13:38:06,914 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]
[2020-09-25 13:38:06,914 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:38:06,920 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:38:06,921 INFO  L82        PathProgramCache]: Analyzing trace with hash 1588916751, now seen corresponding path program 1 times
[2020-09-25 13:38:06,930 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:38:06,930 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219148639]
[2020-09-25 13:38:06,931 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:38:07,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:07,117 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:07,184 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:07,266 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:07,621 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:07,621 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 32
[2020-09-25 13:38:07,621 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 13:38:07,623 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 543
[2020-09-25 13:38:07,627 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:07,627 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:07,628 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 13:38:07,628 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-25 13:38:07,628 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-25 13:38:07,628 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-09-25 13:38:07,716 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 13:38:07,718 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:07,721 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:07,728 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:07,729 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:38:07,729 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:07,729 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-25 13:38:07,730 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:07,730 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:07,730 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:07,730 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:07,731 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:07,731 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:07,741 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 13:38:07,742 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219148639]
[2020-09-25 13:38:07,744 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 13:38:07,744 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 13:38:07,745 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203083816]
[2020-09-25 13:38:07,752 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 13:38:07,752 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 13:38:07,770 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 13:38:07,771 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 13:38:07,774 INFO  L87              Difference]: Start difference. First operand 132 states. Second operand 5 states.
[2020-09-25 13:38:08,304 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 13:38:08,305 INFO  L93              Difference]: Finished difference Result 266 states and 324 transitions.
[2020-09-25 13:38:08,305 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-25 13:38:08,307 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 23
[2020-09-25 13:38:08,308 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 13:38:08,322 INFO  L225             Difference]: With dead ends: 266
[2020-09-25 13:38:08,322 INFO  L226             Difference]: Without dead ends: 135
[2020-09-25 13:38:08,328 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-09-25 13:38:08,350 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2020-09-25 13:38:08,391 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122.
[2020-09-25 13:38:08,393 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 122 states.
[2020-09-25 13:38:08,395 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 134 transitions.
[2020-09-25 13:38:08,398 INFO  L78                 Accepts]: Start accepts. Automaton has 122 states and 134 transitions. Word has length 23
[2020-09-25 13:38:08,398 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 13:38:08,399 INFO  L479      AbstractCegarLoop]: Abstraction has 122 states and 134 transitions.
[2020-09-25 13:38:08,399 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 13:38:08,399 INFO  L276                IsEmpty]: Start isEmpty. Operand 122 states and 134 transitions.
[2020-09-25 13:38:08,404 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2020-09-25 13:38:08,404 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 13:38:08,404 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]
[2020-09-25 13:38:08,405 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 13:38:08,405 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:38:08,406 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:38:08,406 INFO  L82        PathProgramCache]: Analyzing trace with hash 23578911, now seen corresponding path program 1 times
[2020-09-25 13:38:08,406 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:38:08,406 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479995136]
[2020-09-25 13:38:08,407 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:38:08,422 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:08,434 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:08,462 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:08,513 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:08,714 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:08,799 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:08,859 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:13,436 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:13,436 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 72
[2020-09-25 13:38:13,437 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-25 13:38:13,438 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5012
[2020-09-25 13:38:13,444 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:13,444 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:13,445 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-25 13:38:13,445 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-25 13:38:13,445 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 50
[2020-09-25 13:38:13,446 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 13:38:13,544 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 13:38:13,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:13,551 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:13,559 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:13,559 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:38:13,560 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:13,561 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-09-25 13:38:13,561 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:13,561 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:13,562 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:13,571 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:13,572 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:13,573 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 11
[2020-09-25 13:38:13,581 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-09-25 13:38:13,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:13,592 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:13,598 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:13,626 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:13,627 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-25 13:38:13,627 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 13:38:13,628 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 40
[2020-09-25 13:38:13,628 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:13,628 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:13,629 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:38:13,629 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:13,629 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-25 13:38:13,630 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:13,657 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-09-25 13:38:13,662 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:13,666 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:13,710 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:13,710 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:38:13,711 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:13,711 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 47
[2020-09-25 13:38:13,711 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:13,712 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:13,712 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 13:38:13,713 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:13,713 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-09-25 13:38:13,713 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:13,778 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 13:38:13,778 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479995136]
[2020-09-25 13:38:13,779 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 13:38:13,779 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-09-25 13:38:13,779 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170066253]
[2020-09-25 13:38:13,781 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-25 13:38:13,781 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 13:38:13,782 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-25 13:38:13,783 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2020-09-25 13:38:13,784 INFO  L87              Difference]: Start difference. First operand 122 states and 134 transitions. Second operand 11 states.
[2020-09-25 13:38:14,990 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 13:38:14,991 INFO  L93              Difference]: Finished difference Result 341 states and 389 transitions.
[2020-09-25 13:38:14,992 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2020-09-25 13:38:14,992 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 59
[2020-09-25 13:38:14,992 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 13:38:15,003 INFO  L225             Difference]: With dead ends: 341
[2020-09-25 13:38:15,004 INFO  L226             Difference]: Without dead ends: 263
[2020-09-25 13:38:15,007 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600
[2020-09-25 13:38:15,009 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 263 states.
[2020-09-25 13:38:15,048 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 162.
[2020-09-25 13:38:15,048 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 162 states.
[2020-09-25 13:38:15,056 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 182 transitions.
[2020-09-25 13:38:15,056 INFO  L78                 Accepts]: Start accepts. Automaton has 162 states and 182 transitions. Word has length 59
[2020-09-25 13:38:15,057 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 13:38:15,057 INFO  L479      AbstractCegarLoop]: Abstraction has 162 states and 182 transitions.
[2020-09-25 13:38:15,057 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-25 13:38:15,057 INFO  L276                IsEmpty]: Start isEmpty. Operand 162 states and 182 transitions.
[2020-09-25 13:38:15,060 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2020-09-25 13:38:15,061 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 13:38:15,062 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 13:38:15,062 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 13:38:15,062 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:38:15,063 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:38:15,063 INFO  L82        PathProgramCache]: Analyzing trace with hash -1272166002, now seen corresponding path program 1 times
[2020-09-25 13:38:15,063 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:38:15,064 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282206132]
[2020-09-25 13:38:15,064 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:38:15,080 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:15,088 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:15,107 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:15,133 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:15,261 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:15,361 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:15,400 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:16,182 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:16,300 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:16,428 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:16,455 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:16,883 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:20,082 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:20,082 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 78
[2020-09-25 13:38:20,083 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 11
[2020-09-25 13:38:20,083 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5001
[2020-09-25 13:38:20,083 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:20,083 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:20,084 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-25 13:38:20,084 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-25 13:38:20,084 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 54
[2020-09-25 13:38:20,084 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:20,163 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 13:38:20,164 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:20,166 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:20,170 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:20,171 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:38:20,171 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:20,171 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-25 13:38:20,171 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:20,172 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:20,172 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:20,172 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:20,172 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:20,172 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:20,175 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-09-25 13:38:20,177 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:20,180 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:20,184 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:20,200 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:20,200 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-25 13:38:20,201 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 13:38:20,201 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-09-25 13:38:20,201 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:20,201 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:20,202 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:38:20,202 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:20,202 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-25 13:38:20,202 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:20,216 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-09-25 13:38:20,219 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:20,223 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:20,254 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:20,254 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:38:20,254 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:20,254 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 33
[2020-09-25 13:38:20,255 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:20,255 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:20,255 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 13:38:20,255 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:20,255 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-09-25 13:38:20,256 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:20,291 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 13:38:20,291 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282206132]
[2020-09-25 13:38:20,292 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 13:38:20,292 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2020-09-25 13:38:20,292 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608519008]
[2020-09-25 13:38:20,293 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-09-25 13:38:20,293 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 13:38:20,293 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-09-25 13:38:20,294 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132
[2020-09-25 13:38:20,294 INFO  L87              Difference]: Start difference. First operand 162 states and 182 transitions. Second operand 12 states.
[2020-09-25 13:38:21,047 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 13:38:21,047 INFO  L93              Difference]: Finished difference Result 317 states and 358 transitions.
[2020-09-25 13:38:21,047 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2020-09-25 13:38:21,048 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 65
[2020-09-25 13:38:21,048 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 13:38:21,050 INFO  L225             Difference]: With dead ends: 317
[2020-09-25 13:38:21,050 INFO  L226             Difference]: Without dead ends: 207
[2020-09-25 13:38:21,052 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650
[2020-09-25 13:38:21,053 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 207 states.
[2020-09-25 13:38:21,064 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 152.
[2020-09-25 13:38:21,064 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 152 states.
[2020-09-25 13:38:21,065 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions.
[2020-09-25 13:38:21,066 INFO  L78                 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 65
[2020-09-25 13:38:21,066 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 13:38:21,066 INFO  L479      AbstractCegarLoop]: Abstraction has 152 states and 169 transitions.
[2020-09-25 13:38:21,066 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-09-25 13:38:21,067 INFO  L276                IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions.
[2020-09-25 13:38:21,069 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 72
[2020-09-25 13:38:21,069 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 13:38:21,069 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 13:38:21,069 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 13:38:21,070 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:38:21,070 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:38:21,070 INFO  L82        PathProgramCache]: Analyzing trace with hash -1668970121, now seen corresponding path program 1 times
[2020-09-25 13:38:21,082 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:38:21,082 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156386054]
[2020-09-25 13:38:21,082 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:38:21,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:21,101 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:21,117 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:21,136 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:21,157 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:21,553 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:21,655 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:26,095 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:26,095 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 84
[2020-09-25 13:38:26,096 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-25 13:38:26,096 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5001
[2020-09-25 13:38:26,097 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:26,097 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:26,097 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 13:38:26,098 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 26
[2020-09-25 13:38:26,098 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 40
[2020-09-25 13:38:26,098 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:26,155 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 13:38:26,156 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:26,158 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:26,163 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:26,163 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:38:26,164 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:26,164 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-25 13:38:26,164 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:26,165 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:26,165 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:26,165 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:26,166 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:26,166 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:26,170 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-09-25 13:38:26,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:26,177 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:26,180 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:26,181 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-25 13:38:26,181 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:26,181 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-25 13:38:26,181 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:26,182 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:26,182 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:38:26,182 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:26,182 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-25 13:38:26,182 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:26,194 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-09-25 13:38:26,197 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:26,202 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:26,213 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:26,214 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:38:26,214 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:26,214 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-09-25 13:38:26,214 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:26,215 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:26,215 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:38:26,215 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:26,219 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 13:38:26,219 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 13:38:26,228 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-09-25 13:38:26,230 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156386054]
[2020-09-25 13:38:26,230 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 13:38:26,230 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-25 13:38:26,231 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657060832]
[2020-09-25 13:38:26,231 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 13:38:26,232 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 13:38:26,232 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 13:38:26,233 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-09-25 13:38:26,233 INFO  L87              Difference]: Start difference. First operand 152 states and 169 transitions. Second operand 7 states.
[2020-09-25 13:38:26,598 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 13:38:26,599 INFO  L93              Difference]: Finished difference Result 382 states and 432 transitions.
[2020-09-25 13:38:26,599 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-09-25 13:38:26,599 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 71
[2020-09-25 13:38:26,600 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 13:38:26,602 INFO  L225             Difference]: With dead ends: 382
[2020-09-25 13:38:26,602 INFO  L226             Difference]: Without dead ends: 261
[2020-09-25 13:38:26,605 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2020-09-25 13:38:26,608 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 261 states.
[2020-09-25 13:38:26,629 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 178.
[2020-09-25 13:38:26,629 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 178 states.
[2020-09-25 13:38:26,630 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 199 transitions.
[2020-09-25 13:38:26,631 INFO  L78                 Accepts]: Start accepts. Automaton has 178 states and 199 transitions. Word has length 71
[2020-09-25 13:38:26,631 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 13:38:26,631 INFO  L479      AbstractCegarLoop]: Abstraction has 178 states and 199 transitions.
[2020-09-25 13:38:26,631 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 13:38:26,632 INFO  L276                IsEmpty]: Start isEmpty. Operand 178 states and 199 transitions.
[2020-09-25 13:38:26,639 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2020-09-25 13:38:26,639 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 13:38:26,640 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 13:38:26,640 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 13:38:26,640 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:38:26,640 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:38:26,641 INFO  L82        PathProgramCache]: Analyzing trace with hash 112590486, now seen corresponding path program 1 times
[2020-09-25 13:38:26,642 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:38:26,643 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094310905]
[2020-09-25 13:38:26,643 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:38:26,662 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:26,673 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:26,689 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:26,719 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:26,786 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:28,328 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:28,440 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:31,674 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:31,674 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 114
[2020-09-25 13:38:31,675 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-25 13:38:31,675 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5009
[2020-09-25 13:38:31,675 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:31,675 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:31,676 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 13:38:31,676 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 33
[2020-09-25 13:38:31,676 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 63
[2020-09-25 13:38:31,676 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:31,742 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 13:38:31,743 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:31,745 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:31,749 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:31,749 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:38:31,749 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:31,750 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-25 13:38:31,750 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:31,750 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:31,750 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:31,751 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:31,751 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:31,751 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:31,753 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2020-09-25 13:38:31,755 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:31,757 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:31,760 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:31,760 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-25 13:38:31,760 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:31,761 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-25 13:38:31,761 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:31,761 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:31,761 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:38:31,762 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:31,762 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-25 13:38:31,762 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:31,768 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-09-25 13:38:31,770 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:31,772 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:31,774 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:31,775 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-25 13:38:31,775 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:31,775 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 13:38:31,775 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:31,776 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:31,776 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:38:31,776 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:31,776 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-25 13:38:31,776 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:31,802 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2020-09-25 13:38:31,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:31,807 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:31,819 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:31,820 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:38:31,820 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:31,820 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-09-25 13:38:31,820 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:31,820 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:31,821 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:38:31,821 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:31,821 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 13:38:31,821 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:31,835 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2020-09-25 13:38:31,836 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094310905]
[2020-09-25 13:38:31,836 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 13:38:31,836 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2020-09-25 13:38:31,837 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567223040]
[2020-09-25 13:38:31,838 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-25 13:38:31,839 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 13:38:31,839 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-25 13:38:31,839 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2020-09-25 13:38:31,840 INFO  L87              Difference]: Start difference. First operand 178 states and 199 transitions. Second operand 9 states.
[2020-09-25 13:38:32,294 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 13:38:32,295 INFO  L93              Difference]: Finished difference Result 357 states and 404 transitions.
[2020-09-25 13:38:32,295 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-09-25 13:38:32,295 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 99
[2020-09-25 13:38:32,296 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 13:38:32,298 INFO  L225             Difference]: With dead ends: 357
[2020-09-25 13:38:32,298 INFO  L226             Difference]: Without dead ends: 332
[2020-09-25 13:38:32,300 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210
[2020-09-25 13:38:32,301 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 332 states.
[2020-09-25 13:38:32,319 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 243.
[2020-09-25 13:38:32,320 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 243 states.
[2020-09-25 13:38:32,322 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 274 transitions.
[2020-09-25 13:38:32,322 INFO  L78                 Accepts]: Start accepts. Automaton has 243 states and 274 transitions. Word has length 99
[2020-09-25 13:38:32,325 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 13:38:32,325 INFO  L479      AbstractCegarLoop]: Abstraction has 243 states and 274 transitions.
[2020-09-25 13:38:32,325 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-25 13:38:32,325 INFO  L276                IsEmpty]: Start isEmpty. Operand 243 states and 274 transitions.
[2020-09-25 13:38:32,331 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2020-09-25 13:38:32,331 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 13:38:32,331 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 13:38:32,331 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-25 13:38:32,332 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:38:32,332 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:38:32,332 INFO  L82        PathProgramCache]: Analyzing trace with hash -1325819002, now seen corresponding path program 1 times
[2020-09-25 13:38:32,332 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:38:32,333 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261275093]
[2020-09-25 13:38:32,333 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:38:32,341 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:32,350 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:32,366 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:32,390 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:32,416 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:32,616 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:33,973 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:37,344 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:37,344 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 117
[2020-09-25 13:38:37,344 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-25 13:38:37,345 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5001
[2020-09-25 13:38:37,345 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:37,345 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:37,345 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-25 13:38:37,345 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-25 13:38:37,346 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 55
[2020-09-25 13:38:37,346 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:37,409 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 13:38:37,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:37,412 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:37,416 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:37,416 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:38:37,416 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:37,417 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-25 13:38:37,417 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:37,417 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:37,417 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:37,418 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:37,418 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:37,418 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:37,420 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2020-09-25 13:38:37,422 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:37,424 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:37,430 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:37,431 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-25 13:38:37,431 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:37,431 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-25 13:38:37,432 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:37,432 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:37,432 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:38:37,432 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:37,432 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-25 13:38:37,433 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:37,446 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-09-25 13:38:37,448 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:37,451 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:37,481 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:37,481 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:38:37,481 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:37,481 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 31
[2020-09-25 13:38:37,481 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:37,482 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:37,482 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 13:38:37,482 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:37,483 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-09-25 13:38:37,483 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:37,511 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2020-09-25 13:38:37,513 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:37,515 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:37,516 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:37,517 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-25 13:38:37,517 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:37,517 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 13:38:37,517 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:37,518 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:37,518 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:37,518 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 13:38:37,518 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:37,519 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:37,521 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2020-09-25 13:38:37,523 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:37,525 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:37,531 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:37,531 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:38:37,532 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:37,532 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 13:38:37,532 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:37,532 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:37,532 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:37,533 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 10
[2020-09-25 13:38:37,533 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:37,533 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:37,557 INFO  L134       CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2020-09-25 13:38:37,557 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261275093]
[2020-09-25 13:38:37,559 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 13:38:37,559 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-09-25 13:38:37,559 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255370713]
[2020-09-25 13:38:37,561 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-25 13:38:37,561 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 13:38:37,562 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-25 13:38:37,563 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90
[2020-09-25 13:38:37,563 INFO  L87              Difference]: Start difference. First operand 243 states and 274 transitions. Second operand 10 states.
[2020-09-25 13:38:38,179 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 13:38:38,179 INFO  L93              Difference]: Finished difference Result 406 states and 459 transitions.
[2020-09-25 13:38:38,183 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-09-25 13:38:38,183 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 100
[2020-09-25 13:38:38,184 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 13:38:38,186 INFO  L225             Difference]: With dead ends: 406
[2020-09-25 13:38:38,187 INFO  L226             Difference]: Without dead ends: 257
[2020-09-25 13:38:38,188 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342
[2020-09-25 13:38:38,189 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 257 states.
[2020-09-25 13:38:38,202 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 245.
[2020-09-25 13:38:38,203 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 245 states.
[2020-09-25 13:38:38,207 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 273 transitions.
[2020-09-25 13:38:38,208 INFO  L78                 Accepts]: Start accepts. Automaton has 245 states and 273 transitions. Word has length 100
[2020-09-25 13:38:38,208 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 13:38:38,208 INFO  L479      AbstractCegarLoop]: Abstraction has 245 states and 273 transitions.
[2020-09-25 13:38:38,208 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-25 13:38:38,208 INFO  L276                IsEmpty]: Start isEmpty. Operand 245 states and 273 transitions.
[2020-09-25 13:38:38,213 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 107
[2020-09-25 13:38:38,213 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 13:38:38,213 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 13:38:38,214 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-25 13:38:38,214 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:38:38,214 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:38:38,214 INFO  L82        PathProgramCache]: Analyzing trace with hash 106272181, now seen corresponding path program 1 times
[2020-09-25 13:38:38,215 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:38:38,215 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009509291]
[2020-09-25 13:38:38,215 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:38:38,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:38,234 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:38,250 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:38,275 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:38,299 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:38,339 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:39,619 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:43,226 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:43,226 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 123
[2020-09-25 13:38:43,226 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-25 13:38:43,227 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5000
[2020-09-25 13:38:43,227 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:43,227 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:43,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-25 13:38:43,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-25 13:38:43,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-25 13:38:43,227 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 13:38:43,279 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 13:38:43,280 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:43,282 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:43,286 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:43,286 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:38:43,286 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:43,287 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-25 13:38:43,287 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:43,287 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:43,287 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:43,287 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:43,288 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:43,288 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:43,290 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2020-09-25 13:38:43,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:43,294 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:43,301 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:43,301 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-25 13:38:43,302 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:43,302 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-25 13:38:43,302 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:43,303 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:43,303 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:38:43,303 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:43,304 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-25 13:38:43,304 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:43,317 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-09-25 13:38:43,319 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:43,323 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:43,350 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:43,351 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:38:43,351 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:43,351 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 30
[2020-09-25 13:38:43,351 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:43,352 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:43,352 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 13:38:43,352 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:43,352 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-09-25 13:38:43,352 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:43,434 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2020-09-25 13:38:43,438 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:43,449 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:43,473 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:43,474 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-25 13:38:43,474 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:43,474 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-09-25 13:38:43,475 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:43,475 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:43,475 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 13:38:43,476 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 4
[2020-09-25 13:38:43,476 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-09-25 13:38:43,476 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:43,531 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2020-09-25 13:38:43,533 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:43,535 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:43,542 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:43,542 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:38:43,543 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:43,543 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-25 13:38:43,543 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:43,544 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:43,544 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:43,544 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 10
[2020-09-25 13:38:43,545 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:43,545 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:43,566 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2020-09-25 13:38:43,567 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009509291]
[2020-09-25 13:38:43,567 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 13:38:43,567 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2020-09-25 13:38:43,568 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198476500]
[2020-09-25 13:38:43,569 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-09-25 13:38:43,569 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 13:38:43,570 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-09-25 13:38:43,570 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132
[2020-09-25 13:38:43,571 INFO  L87              Difference]: Start difference. First operand 245 states and 273 transitions. Second operand 12 states.
[2020-09-25 13:38:44,429 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 13:38:44,430 INFO  L93              Difference]: Finished difference Result 457 states and 516 transitions.
[2020-09-25 13:38:44,430 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2020-09-25 13:38:44,430 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 106
[2020-09-25 13:38:44,431 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 13:38:44,433 INFO  L225             Difference]: With dead ends: 457
[2020-09-25 13:38:44,433 INFO  L226             Difference]: Without dead ends: 312
[2020-09-25 13:38:44,434 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702
[2020-09-25 13:38:44,435 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 312 states.
[2020-09-25 13:38:44,448 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 267.
[2020-09-25 13:38:44,448 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 267 states.
[2020-09-25 13:38:44,450 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 301 transitions.
[2020-09-25 13:38:44,450 INFO  L78                 Accepts]: Start accepts. Automaton has 267 states and 301 transitions. Word has length 106
[2020-09-25 13:38:44,451 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 13:38:44,451 INFO  L479      AbstractCegarLoop]: Abstraction has 267 states and 301 transitions.
[2020-09-25 13:38:44,451 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-09-25 13:38:44,451 INFO  L276                IsEmpty]: Start isEmpty. Operand 267 states and 301 transitions.
[2020-09-25 13:38:44,453 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 110
[2020-09-25 13:38:44,453 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 13:38:44,453 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 13:38:44,453 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-09-25 13:38:44,454 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:38:44,454 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:38:44,454 INFO  L82        PathProgramCache]: Analyzing trace with hash -1281866795, now seen corresponding path program 1 times
[2020-09-25 13:38:44,454 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:38:44,455 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23790976]
[2020-09-25 13:38:44,455 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:38:44,463 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:44,472 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:44,486 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:44,507 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:45,665 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:45,666 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 126
[2020-09-25 13:38:45,666 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 13:38:45,666 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1201
[2020-09-25 13:38:45,666 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:45,667 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:45,667 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 13:38:45,667 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-09-25 13:38:45,668 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 13:38:45,668 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:45,709 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 13:38:45,710 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:45,712 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:45,715 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:45,716 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:38:45,716 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:45,716 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-25 13:38:45,716 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:45,716 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:45,717 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:45,717 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:45,717 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:45,717 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 13:38:45,719 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2020-09-25 13:38:45,720 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:45,722 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:45,723 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:45,723 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-25 13:38:45,723 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:45,724 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 13:38:45,724 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:45,724 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:45,724 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:45,725 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 13:38:45,725 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:45,725 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:45,733 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-09-25 13:38:45,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:45,737 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:45,743 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:45,744 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:38:45,744 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:45,744 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 13:38:45,744 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:45,745 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:45,745 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:45,745 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 10
[2020-09-25 13:38:45,745 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:45,746 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:45,748 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2020-09-25 13:38:45,750 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:45,752 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:45,758 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:45,758 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-25 13:38:45,759 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:45,759 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 13:38:45,759 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:45,759 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:45,760 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:45,760 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 15
[2020-09-25 13:38:45,760 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:45,760 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:45,763 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2020-09-25 13:38:45,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:45,767 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:45,773 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:45,774 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:38:45,774 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:45,774 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-25 13:38:45,774 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:45,775 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:45,775 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:45,775 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 10
[2020-09-25 13:38:45,775 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:45,775 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:45,799 INFO  L134       CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2020-09-25 13:38:45,799 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23790976]
[2020-09-25 13:38:45,800 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 13:38:45,800 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-25 13:38:45,800 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563873638]
[2020-09-25 13:38:45,801 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 13:38:45,801 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 13:38:45,801 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 13:38:45,801 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-09-25 13:38:45,801 INFO  L87              Difference]: Start difference. First operand 267 states and 301 transitions. Second operand 7 states.
[2020-09-25 13:38:46,163 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 13:38:46,164 INFO  L93              Difference]: Finished difference Result 525 states and 593 transitions.
[2020-09-25 13:38:46,164 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-09-25 13:38:46,164 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 109
[2020-09-25 13:38:46,165 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 13:38:46,167 INFO  L225             Difference]: With dead ends: 525
[2020-09-25 13:38:46,167 INFO  L226             Difference]: Without dead ends: 290
[2020-09-25 13:38:46,168 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2020-09-25 13:38:46,169 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 290 states.
[2020-09-25 13:38:46,179 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 274.
[2020-09-25 13:38:46,179 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 274 states.
[2020-09-25 13:38:46,181 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 308 transitions.
[2020-09-25 13:38:46,182 INFO  L78                 Accepts]: Start accepts. Automaton has 274 states and 308 transitions. Word has length 109
[2020-09-25 13:38:46,182 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 13:38:46,182 INFO  L479      AbstractCegarLoop]: Abstraction has 274 states and 308 transitions.
[2020-09-25 13:38:46,182 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 13:38:46,182 INFO  L276                IsEmpty]: Start isEmpty. Operand 274 states and 308 transitions.
[2020-09-25 13:38:46,184 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 117
[2020-09-25 13:38:46,184 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 13:38:46,184 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 13:38:46,184 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-09-25 13:38:46,185 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:38:46,185 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:38:46,185 INFO  L82        PathProgramCache]: Analyzing trace with hash -1761287741, now seen corresponding path program 2 times
[2020-09-25 13:38:46,185 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:38:46,186 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121856333]
[2020-09-25 13:38:46,186 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:38:46,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:46,204 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:46,220 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:46,246 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:48,004 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:48,005 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 133
[2020-09-25 13:38:48,005 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 13:38:48,005 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1809
[2020-09-25 13:38:48,006 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:48,006 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:48,006 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 13:38:48,007 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-09-25 13:38:48,007 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-09-25 13:38:48,007 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:48,069 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 13:38:48,070 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:48,071 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:48,076 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:48,076 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:38:48,076 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:48,077 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-25 13:38:48,077 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:48,077 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:48,078 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:48,078 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:48,078 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:48,079 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:48,081 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-09-25 13:38:48,083 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:48,085 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:48,086 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:48,087 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-25 13:38:48,087 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:48,087 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 13:38:48,088 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:48,088 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:48,088 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:48,089 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 13:38:48,089 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:48,089 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:48,102 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-09-25 13:38:48,104 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:48,106 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:48,112 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:48,113 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:38:48,113 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:48,114 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-25 13:38:48,114 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:48,114 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:48,115 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:48,115 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 10
[2020-09-25 13:38:48,115 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:48,116 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:48,118 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2020-09-25 13:38:48,120 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:48,122 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:48,129 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:48,129 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-25 13:38:48,129 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:48,130 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-25 13:38:48,130 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:48,130 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:48,131 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:48,131 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 15
[2020-09-25 13:38:48,131 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:48,132 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:48,135 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2020-09-25 13:38:48,137 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:48,139 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:48,145 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:48,146 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:38:48,146 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:48,147 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-25 13:38:48,147 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:48,147 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:48,147 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:48,148 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 10
[2020-09-25 13:38:48,148 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:48,148 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:48,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2020-09-25 13:38:48,164 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121856333]
[2020-09-25 13:38:48,164 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 13:38:48,165 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2020-09-25 13:38:48,168 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166256385]
[2020-09-25 13:38:48,169 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-25 13:38:48,169 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 13:38:48,169 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-25 13:38:48,169 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2020-09-25 13:38:48,170 INFO  L87              Difference]: Start difference. First operand 274 states and 308 transitions. Second operand 9 states.
[2020-09-25 13:38:48,629 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 13:38:48,629 INFO  L93              Difference]: Finished difference Result 532 states and 600 transitions.
[2020-09-25 13:38:48,631 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-09-25 13:38:48,631 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 116
[2020-09-25 13:38:48,632 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 13:38:48,635 INFO  L225             Difference]: With dead ends: 532
[2020-09-25 13:38:48,636 INFO  L226             Difference]: Without dead ends: 297
[2020-09-25 13:38:48,637 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210
[2020-09-25 13:38:48,638 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 297 states.
[2020-09-25 13:38:48,651 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 281.
[2020-09-25 13:38:48,651 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 281 states.
[2020-09-25 13:38:48,654 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 315 transitions.
[2020-09-25 13:38:48,654 INFO  L78                 Accepts]: Start accepts. Automaton has 281 states and 315 transitions. Word has length 116
[2020-09-25 13:38:48,654 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 13:38:48,654 INFO  L479      AbstractCegarLoop]: Abstraction has 281 states and 315 transitions.
[2020-09-25 13:38:48,655 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-25 13:38:48,655 INFO  L276                IsEmpty]: Start isEmpty. Operand 281 states and 315 transitions.
[2020-09-25 13:38:48,656 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 124
[2020-09-25 13:38:48,657 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 13:38:48,657 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 13:38:48,657 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-09-25 13:38:48,657 INFO  L427      AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:38:48,658 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:38:48,658 INFO  L82        PathProgramCache]: Analyzing trace with hash -302687211, now seen corresponding path program 3 times
[2020-09-25 13:38:48,658 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:38:48,658 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904104436]
[2020-09-25 13:38:48,659 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:38:48,667 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:48,678 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:48,696 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:48,725 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:51,544 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:51,545 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 140
[2020-09-25 13:38:51,545 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 13:38:51,546 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2875
[2020-09-25 13:38:51,546 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:51,546 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:51,546 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-25 13:38:51,547 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-09-25 13:38:51,547 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-09-25 13:38:51,547 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:51,625 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 13:38:51,626 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:51,628 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:51,632 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:51,632 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:38:51,633 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:51,633 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-25 13:38:51,633 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:51,633 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:51,634 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:51,634 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:38:51,634 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:51,634 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:51,636 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-09-25 13:38:51,637 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:51,639 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:51,640 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:51,641 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-25 13:38:51,641 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:51,641 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 13:38:51,641 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:51,642 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:51,642 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:51,642 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 13:38:51,642 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:51,642 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:51,671 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58
[2020-09-25 13:38:51,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:51,674 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:51,680 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:51,680 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:38:51,680 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:51,681 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 13:38:51,681 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:51,681 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:51,681 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:51,681 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 10
[2020-09-25 13:38:51,682 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:51,682 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:51,684 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-25 13:38:51,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:51,689 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:51,694 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:51,695 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-25 13:38:51,695 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:51,695 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 13:38:51,695 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:51,696 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:51,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:51,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 15
[2020-09-25 13:38:51,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:51,697 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:51,699 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2020-09-25 13:38:51,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:38:51,702 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:38:51,708 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:38:51,708 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:38:51,708 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:38:51,708 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-25 13:38:51,709 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:38:51,709 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:38:51,709 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:38:51,709 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 10
[2020-09-25 13:38:51,709 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:38:51,710 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:38:51,722 INFO  L134       CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2020-09-25 13:38:51,722 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904104436]
[2020-09-25 13:38:51,722 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 13:38:51,723 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-25 13:38:51,723 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575416682]
[2020-09-25 13:38:51,723 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-25 13:38:51,723 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 13:38:51,724 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-25 13:38:51,724 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2020-09-25 13:38:51,724 INFO  L87              Difference]: Start difference. First operand 281 states and 315 transitions. Second operand 11 states.