/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i


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


This is Ultimate 0.1.25-c90d42b
[2020-09-25 03:15:08,388 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-25 03:15:08,392 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 03:15:08,419 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 03:15:08,420 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 03:15:08,423 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 03:15:08,428 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 03:15:08,433 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 03:15:08,436 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 03:15:08,438 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 03:15:08,440 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 03:15:08,441 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 03:15:08,441 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 03:15:08,444 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 03:15:08,445 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 03:15:08,446 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 03:15:08,450 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 03:15:08,452 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 03:15:08,455 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 03:15:08,462 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 03:15:08,465 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 03:15:08,466 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 03:15:08,468 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 03:15:08,469 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 03:15:08,473 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 03:15:08,474 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 03:15:08,474 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 03:15:08,477 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 03:15:08,478 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 03:15:08,488 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 03:15:08,488 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 03:15:08,493 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 03:15:08,493 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 03:15:08,494 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 03:15:08,495 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 03:15:08,496 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 03:15:08,496 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 03:15:08,500 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 03:15:08,500 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 03:15:08,501 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 03:15:08,502 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 03:15:08,503 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 03:15:08,546 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-25 03:15:08,546 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 03:15:08,548 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 03:15:08,549 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-25 03:15:08,549 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-25 03:15:08,549 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 03:15:08,550 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-25 03:15:08,550 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-25 03:15:08,550 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-25 03:15:08,550 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-25 03:15:08,551 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 03:15:08,551 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 03:15:08,551 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 03:15:08,552 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-25 03:15:08,552 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-25 03:15:08,552 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-25 03:15:08,552 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-25 03:15:08,553 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 03:15:08,553 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-25 03:15:08,553 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-25 03:15:08,553 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-25 03:15:08,553 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 03:15:08,554 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 03:15:08,554 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 03:15:08,554 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 03:15:08,554 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-25 03:15:08,554 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 03:15:08,555 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 03:15:08,555 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-25 03:15:08,555 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true;
[2020-09-25 03:15:09,097 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 03:15:09,124 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 03:15:09,129 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 03:15:09,132 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-25 03:15:09,132 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-25 03:15:09,133 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i
[2020-09-25 03:15:09,231 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d84f4dc0/ecd4bd99f65e4abea97a3dad199d8f5a/FLAG7e175baab
[2020-09-25 03:15:09,853 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-25 03:15:09,854 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i
[2020-09-25 03:15:09,881 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d84f4dc0/ecd4bd99f65e4abea97a3dad199d8f5a/FLAG7e175baab
[2020-09-25 03:15:10,125 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d84f4dc0/ecd4bd99f65e4abea97a3dad199d8f5a
[2020-09-25 03:15:10,137 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 03:15:10,145 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 03:15:10,149 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 03:15:10,150 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 03:15:10,154 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 03:15:10,155 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:10" (1/1) ...
[2020-09-25 03:15:10,160 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e6d6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10, skipping insertion in model container
[2020-09-25 03:15:10,161 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:10" (1/1) ...
[2020-09-25 03:15:10,172 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-25 03:15:10,249 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-25 03:15:10,746 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-25 03:15:10,759 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-25 03:15:10,812 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-25 03:15:10,868 INFO  L208         MainTranslator]: Completed translation
[2020-09-25 03:15:10,868 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10 WrapperNode
[2020-09-25 03:15:10,869 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 03:15:10,869 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 03:15:10,870 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 03:15:10,870 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 03:15:10,887 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (1/1) ...
[2020-09-25 03:15:10,888 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (1/1) ...
[2020-09-25 03:15:10,907 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (1/1) ...
[2020-09-25 03:15:10,908 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (1/1) ...
[2020-09-25 03:15:10,927 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (1/1) ...
[2020-09-25 03:15:10,936 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (1/1) ...
[2020-09-25 03:15:10,940 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (1/1) ...
[2020-09-25 03:15:10,947 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 03:15:10,947 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 03:15:10,947 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 03:15:10,948 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-25 03:15:10,949 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (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 03:15:11,036 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 03:15:11,036 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 03:15:11,036 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 03:15:11,036 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2020-09-25 03:15:11,037 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2020-09-25 03:15:11,037 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2020-09-25 03:15:11,038 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2020-09-25 03:15:11,038 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2020-09-25 03:15:11,039 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2020-09-25 03:15:11,039 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2020-09-25 03:15:11,039 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2020-09-25 03:15:11,040 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2020-09-25 03:15:11,040 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2020-09-25 03:15:11,040 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2020-09-25 03:15:11,040 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2020-09-25 03:15:11,041 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2020-09-25 03:15:11,041 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2020-09-25 03:15:11,042 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2020-09-25 03:15:11,042 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2020-09-25 03:15:11,042 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2020-09-25 03:15:11,043 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2020-09-25 03:15:11,043 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2020-09-25 03:15:11,044 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2020-09-25 03:15:11,044 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2020-09-25 03:15:11,045 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2020-09-25 03:15:11,046 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2020-09-25 03:15:11,047 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2020-09-25 03:15:11,047 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2020-09-25 03:15:11,047 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2020-09-25 03:15:11,047 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2020-09-25 03:15:11,047 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2020-09-25 03:15:11,047 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2020-09-25 03:15:11,048 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2020-09-25 03:15:11,048 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2020-09-25 03:15:11,048 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2020-09-25 03:15:11,049 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2020-09-25 03:15:11,049 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2020-09-25 03:15:11,049 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2020-09-25 03:15:11,049 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2020-09-25 03:15:11,049 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2020-09-25 03:15:11,049 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2020-09-25 03:15:11,050 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2020-09-25 03:15:11,050 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2020-09-25 03:15:11,050 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2020-09-25 03:15:11,050 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2020-09-25 03:15:11,050 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2020-09-25 03:15:11,050 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2020-09-25 03:15:11,050 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2020-09-25 03:15:11,051 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2020-09-25 03:15:11,051 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2020-09-25 03:15:11,051 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2020-09-25 03:15:11,051 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2020-09-25 03:15:11,052 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2020-09-25 03:15:11,052 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-25 03:15:11,052 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2020-09-25 03:15:11,052 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2020-09-25 03:15:11,053 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-25 03:15:11,053 INFO  L130     BoogieDeclarations]: Found specification of procedure cfree
[2020-09-25 03:15:11,053 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2020-09-25 03:15:11,053 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2020-09-25 03:15:11,053 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2020-09-25 03:15:11,053 INFO  L130     BoogieDeclarations]: Found specification of procedure aligned_alloc
[2020-09-25 03:15:11,054 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-25 03:15:11,054 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2020-09-25 03:15:11,054 INFO  L130     BoogieDeclarations]: Found specification of procedure at_quick_exit
[2020-09-25 03:15:11,054 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2020-09-25 03:15:11,054 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-25 03:15:11,054 INFO  L130     BoogieDeclarations]: Found specification of procedure quick_exit
[2020-09-25 03:15:11,055 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2020-09-25 03:15:11,055 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2020-09-25 03:15:11,055 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2020-09-25 03:15:11,055 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2020-09-25 03:15:11,055 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2020-09-25 03:15:11,055 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2020-09-25 03:15:11,056 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2020-09-25 03:15:11,056 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2020-09-25 03:15:11,056 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2020-09-25 03:15:11,056 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2020-09-25 03:15:11,056 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2020-09-25 03:15:11,056 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2020-09-25 03:15:11,057 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2020-09-25 03:15:11,057 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2020-09-25 03:15:11,057 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2020-09-25 03:15:11,057 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2020-09-25 03:15:11,057 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2020-09-25 03:15:11,058 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2020-09-25 03:15:11,058 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2020-09-25 03:15:11,058 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2020-09-25 03:15:11,058 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2020-09-25 03:15:11,058 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2020-09-25 03:15:11,058 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2020-09-25 03:15:11,059 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2020-09-25 03:15:11,059 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2020-09-25 03:15:11,059 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2020-09-25 03:15:11,059 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2020-09-25 03:15:11,059 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2020-09-25 03:15:11,059 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2020-09-25 03:15:11,059 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2020-09-25 03:15:11,060 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2020-09-25 03:15:11,060 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2020-09-25 03:15:11,060 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2020-09-25 03:15:11,060 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2020-09-25 03:15:11,060 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2020-09-25 03:15:11,060 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2020-09-25 03:15:11,061 INFO  L130     BoogieDeclarations]: Found specification of procedure getsubopt
[2020-09-25 03:15:11,061 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2020-09-25 03:15:11,061 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 03:15:11,061 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 03:15:11,061 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-25 03:15:11,061 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-25 03:15:11,062 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-25 03:15:11,062 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 03:15:11,062 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-25 03:15:11,062 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 03:15:11,062 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 03:15:11,062 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 03:15:11,063 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 03:15:11,733 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 03:15:11,734 INFO  L295             CfgBuilder]: Removed 17 assume(true) statements.
[2020-09-25 03:15:11,746 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:11 BoogieIcfgContainer
[2020-09-25 03:15:11,747 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 03:15:11,749 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 03:15:11,749 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 03:15:11,753 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-25 03:15:11,754 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:15:10" (1/3) ...
[2020-09-25 03:15:11,755 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f85c0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:11, skipping insertion in model container
[2020-09-25 03:15:11,756 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (2/3) ...
[2020-09-25 03:15:11,757 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f85c0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:11, skipping insertion in model container
[2020-09-25 03:15:11,762 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:11" (3/3) ...
[2020-09-25 03:15:11,765 INFO  L109   eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i
[2020-09-25 03:15:11,782 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 03:15:11,795 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations.
[2020-09-25 03:15:11,820 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 7 error locations.
[2020-09-25 03:15:11,866 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-25 03:15:11,867 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-25 03:15:11,868 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 03:15:11,868 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 03:15:11,868 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 03:15:11,868 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-25 03:15:11,868 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 03:15:11,868 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 03:15:11,909 INFO  L276                IsEmpty]: Start isEmpty. Operand 123 states.
[2020-09-25 03:15:11,918 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-09-25 03:15:11,918 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:15:11,919 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 03:15:11,920 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:15:11,927 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:15:11,927 INFO  L82        PathProgramCache]: Analyzing trace with hash 1523709425, now seen corresponding path program 1 times
[2020-09-25 03:15:11,938 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:15:11,939 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098400891]
[2020-09-25 03:15:11,939 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:15:12,112 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:12,162 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:12,297 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:12,818 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:12,818 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 30
[2020-09-25 03:15:12,819 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 03:15:12,819 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 699
[2020-09-25 03:15:12,822 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:12,822 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 03:15:12,823 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-25 03:15:12,823 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-09-25 03:15:12,823 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-25 03:15:13,005 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:15:13,008 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:13,013 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:13,036 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:13,037 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:15:13,037 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:13,037 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 27
[2020-09-25 03:15:13,038 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:13,038 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:15:13,038 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:15:13,038 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:15:13,039 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:15:13,057 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 03:15:13,058 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098400891]
[2020-09-25 03:15:13,061 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 03:15:13,061 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-25 03:15:13,063 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153803313]
[2020-09-25 03:15:13,070 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-25 03:15:13,071 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:15:13,089 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-25 03:15:13,090 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-09-25 03:15:13,094 INFO  L87              Difference]: Start difference. First operand 123 states. Second operand 8 states.
[2020-09-25 03:15:13,663 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:15:13,664 INFO  L93              Difference]: Finished difference Result 281 states and 350 transitions.
[2020-09-25 03:15:13,664 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-09-25 03:15:13,666 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 23
[2020-09-25 03:15:13,667 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:15:13,681 INFO  L225             Difference]: With dead ends: 281
[2020-09-25 03:15:13,681 INFO  L226             Difference]: Without dead ends: 119
[2020-09-25 03:15:13,687 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182
[2020-09-25 03:15:13,711 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 119 states.
[2020-09-25 03:15:13,740 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98.
[2020-09-25 03:15:13,742 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 98 states.
[2020-09-25 03:15:13,743 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions.
[2020-09-25 03:15:13,746 INFO  L78                 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 23
[2020-09-25 03:15:13,746 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:15:13,746 INFO  L479      AbstractCegarLoop]: Abstraction has 98 states and 101 transitions.
[2020-09-25 03:15:13,747 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-25 03:15:13,747 INFO  L276                IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions.
[2020-09-25 03:15:13,748 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-09-25 03:15:13,748 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:15:13,748 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]
[2020-09-25 03:15:13,749 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 03:15:13,749 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:15:13,750 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:15:13,750 INFO  L82        PathProgramCache]: Analyzing trace with hash 1939387545, now seen corresponding path program 1 times
[2020-09-25 03:15:13,750 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:15:13,751 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589755304]
[2020-09-25 03:15:13,751 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:15:13,777 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:13,797 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:13,978 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:13,978 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 36
[2020-09-25 03:15:13,979 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:13,979 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 200
[2020-09-25 03:15:13,979 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:13,979 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 03:15:13,980 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 23
[2020-09-25 03:15:13,980 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-25 03:15:13,980 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:15:14,075 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:15:14,077 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:14,079 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:14,092 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:14,093 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:15:14,093 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:14,093 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-09-25 03:15:14,093 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:14,094 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:15:14,094 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:15:14,094 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:15:14,094 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:14,104 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 03:15:14,105 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589755304]
[2020-09-25 03:15:14,105 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 03:15:14,105 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 03:15:14,106 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348864933]
[2020-09-25 03:15:14,108 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 03:15:14,108 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:15:14,108 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 03:15:14,109 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 03:15:14,110 INFO  L87              Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 6 states.
[2020-09-25 03:15:14,447 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:15:14,447 INFO  L93              Difference]: Finished difference Result 146 states and 152 transitions.
[2020-09-25 03:15:14,448 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-09-25 03:15:14,448 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 29
[2020-09-25 03:15:14,449 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:15:14,451 INFO  L225             Difference]: With dead ends: 146
[2020-09-25 03:15:14,452 INFO  L226             Difference]: Without dead ends: 143
[2020-09-25 03:15:14,455 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2020-09-25 03:15:14,456 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2020-09-25 03:15:14,476 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107.
[2020-09-25 03:15:14,476 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 107 states.
[2020-09-25 03:15:14,482 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions.
[2020-09-25 03:15:14,483 INFO  L78                 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 29
[2020-09-25 03:15:14,483 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:15:14,483 INFO  L479      AbstractCegarLoop]: Abstraction has 107 states and 111 transitions.
[2020-09-25 03:15:14,484 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 03:15:14,484 INFO  L276                IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions.
[2020-09-25 03:15:14,486 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2020-09-25 03:15:14,486 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:15:14,486 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]
[2020-09-25 03:15:14,486 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 03:15:14,487 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:15:14,487 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:15:14,488 INFO  L82        PathProgramCache]: Analyzing trace with hash 1026590761, now seen corresponding path program 1 times
[2020-09-25 03:15:14,488 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:15:14,488 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266344789]
[2020-09-25 03:15:14,495 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:15:14,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:14,554 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:14,636 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:15,217 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:15,217 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-25 03:15:15,217 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 03:15:15,223 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 685
[2020-09-25 03:15:15,223 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:15,223 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 03:15:15,224 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-09-25 03:15:15,224 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-09-25 03:15:15,224 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:15,311 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:15:15,312 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:15,314 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:15,320 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:15,320 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:15:15,320 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:15,321 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-25 03:15:15,321 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:15,321 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:15:15,321 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:15:15,322 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:15:15,322 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:15,328 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 03:15:15,329 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266344789]
[2020-09-25 03:15:15,329 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 03:15:15,329 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 03:15:15,330 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930060334]
[2020-09-25 03:15:15,331 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 03:15:15,331 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:15:15,332 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 03:15:15,332 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 03:15:15,332 INFO  L87              Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 6 states.
[2020-09-25 03:15:15,725 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:15:15,726 INFO  L93              Difference]: Finished difference Result 140 states and 146 transitions.
[2020-09-25 03:15:15,726 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-25 03:15:15,726 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 38
[2020-09-25 03:15:15,727 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:15:15,728 INFO  L225             Difference]: With dead ends: 140
[2020-09-25 03:15:15,728 INFO  L226             Difference]: Without dead ends: 118
[2020-09-25 03:15:15,729 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-25 03:15:15,730 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 118 states.
[2020-09-25 03:15:15,738 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110.
[2020-09-25 03:15:15,739 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 110 states.
[2020-09-25 03:15:15,740 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions.
[2020-09-25 03:15:15,740 INFO  L78                 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 38
[2020-09-25 03:15:15,740 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:15:15,741 INFO  L479      AbstractCegarLoop]: Abstraction has 110 states and 114 transitions.
[2020-09-25 03:15:15,741 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 03:15:15,741 INFO  L276                IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions.
[2020-09-25 03:15:15,742 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2020-09-25 03:15:15,742 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:15:15,743 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]
[2020-09-25 03:15:15,743 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 03:15:15,743 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:15:15,744 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:15:15,744 INFO  L82        PathProgramCache]: Analyzing trace with hash 1637573847, now seen corresponding path program 1 times
[2020-09-25 03:15:15,744 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:15:15,745 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642701634]
[2020-09-25 03:15:15,745 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:15:15,767 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:15,788 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:15,952 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:15,952 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-25 03:15:15,953 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:15,953 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 183
[2020-09-25 03:15:15,953 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:15,953 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 03:15:15,953 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 40
[2020-09-25 03:15:15,954 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 3
[2020-09-25 03:15:15,954 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:15,996 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:15:15,997 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:15,999 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:16,006 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:16,006 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:15:16,007 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:16,007 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-25 03:15:16,007 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:16,007 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:15:16,008 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:15:16,008 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:15:16,008 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:15:16,013 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 03:15:16,013 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642701634]
[2020-09-25 03:15:16,014 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 03:15:16,014 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 03:15:16,014 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001705530]
[2020-09-25 03:15:16,014 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 03:15:16,015 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:15:16,015 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 03:15:16,015 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 03:15:16,016 INFO  L87              Difference]: Start difference. First operand 110 states and 114 transitions. Second operand 5 states.
[2020-09-25 03:15:16,211 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:15:16,212 INFO  L93              Difference]: Finished difference Result 115 states and 119 transitions.
[2020-09-25 03:15:16,212 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-25 03:15:16,212 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 38
[2020-09-25 03:15:16,213 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:15:16,214 INFO  L225             Difference]: With dead ends: 115
[2020-09-25 03:15:16,214 INFO  L226             Difference]: Without dead ends: 112
[2020-09-25 03:15:16,215 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-25 03:15:16,215 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2020-09-25 03:15:16,222 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107.
[2020-09-25 03:15:16,222 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 107 states.
[2020-09-25 03:15:16,223 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions.
[2020-09-25 03:15:16,223 INFO  L78                 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 38
[2020-09-25 03:15:16,223 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:15:16,223 INFO  L479      AbstractCegarLoop]: Abstraction has 107 states and 111 transitions.
[2020-09-25 03:15:16,224 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 03:15:16,224 INFO  L276                IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions.
[2020-09-25 03:15:16,225 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2020-09-25 03:15:16,225 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:15:16,226 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]
[2020-09-25 03:15:16,226 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 03:15:16,226 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:15:16,226 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:15:16,227 INFO  L82        PathProgramCache]: Analyzing trace with hash -1162057661, now seen corresponding path program 1 times
[2020-09-25 03:15:16,227 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:15:16,227 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897642779]
[2020-09-25 03:15:16,227 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:15:16,251 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:16,270 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:16,476 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:16,476 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-09-25 03:15:16,476 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:16,476 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 224
[2020-09-25 03:15:16,477 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:16,477 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 03:15:16,477 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 36
[2020-09-25 03:15:16,477 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-25 03:15:16,478 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:16,559 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:15:16,561 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:16,565 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:16,573 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:16,573 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:15:16,574 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:16,574 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-25 03:15:16,574 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:16,574 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:15:16,574 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:15:16,575 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:15:16,575 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:16,583 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 03:15:16,583 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897642779]
[2020-09-25 03:15:16,584 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 03:15:16,584 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 03:15:16,584 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900402211]
[2020-09-25 03:15:16,585 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 03:15:16,585 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:15:16,585 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 03:15:16,585 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 03:15:16,586 INFO  L87              Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 5 states.
[2020-09-25 03:15:16,814 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:15:16,815 INFO  L93              Difference]: Finished difference Result 110 states and 114 transitions.
[2020-09-25 03:15:16,815 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-25 03:15:16,815 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 42
[2020-09-25 03:15:16,816 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:15:16,817 INFO  L225             Difference]: With dead ends: 110
[2020-09-25 03:15:16,817 INFO  L226             Difference]: Without dead ends: 107
[2020-09-25 03:15:16,818 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-25 03:15:16,819 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2020-09-25 03:15:16,825 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104.
[2020-09-25 03:15:16,825 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 104 states.
[2020-09-25 03:15:16,826 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions.
[2020-09-25 03:15:16,826 INFO  L78                 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 42
[2020-09-25 03:15:16,827 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:15:16,827 INFO  L479      AbstractCegarLoop]: Abstraction has 104 states and 108 transitions.
[2020-09-25 03:15:16,827 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 03:15:16,827 INFO  L276                IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions.
[2020-09-25 03:15:16,828 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2020-09-25 03:15:16,828 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:15:16,829 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]
[2020-09-25 03:15:16,829 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-25 03:15:16,829 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:15:16,829 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:15:16,830 INFO  L82        PathProgramCache]: Analyzing trace with hash -41137780, now seen corresponding path program 1 times
[2020-09-25 03:15:16,830 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:15:16,830 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042437713]
[2020-09-25 03:15:16,830 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:15:16,857 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:16,883 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:17,062 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:18,432 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:18,432 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 51
[2020-09-25 03:15:18,432 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 03:15:18,432 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1573
[2020-09-25 03:15:18,433 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:18,433 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-25 03:15:18,433 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-25 03:15:18,433 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 36
[2020-09-25 03:15:18,434 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:18,584 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:15:18,586 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:18,588 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:18,594 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:18,594 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:15:18,594 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:18,594 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 03:15:18,595 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:18,595 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:15:18,595 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:15:18,595 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:15:18,596 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:18,603 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 03:15:18,603 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042437713]
[2020-09-25 03:15:18,604 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 03:15:18,604 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2020-09-25 03:15:18,604 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453694671]
[2020-09-25 03:15:18,605 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-09-25 03:15:18,605 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:15:18,605 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-09-25 03:15:18,605 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156
[2020-09-25 03:15:18,606 INFO  L87              Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 13 states.
[2020-09-25 03:15:19,242 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:15:19,242 INFO  L93              Difference]: Finished difference Result 148 states and 154 transitions.
[2020-09-25 03:15:19,243 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-25 03:15:19,243 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 44
[2020-09-25 03:15:19,243 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:15:19,244 INFO  L225             Difference]: With dead ends: 148
[2020-09-25 03:15:19,245 INFO  L226             Difference]: Without dead ends: 146
[2020-09-25 03:15:19,246 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420
[2020-09-25 03:15:19,246 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 146 states.
[2020-09-25 03:15:19,264 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 130.
[2020-09-25 03:15:19,265 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 130 states.
[2020-09-25 03:15:19,266 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 136 transitions.
[2020-09-25 03:15:19,266 INFO  L78                 Accepts]: Start accepts. Automaton has 130 states and 136 transitions. Word has length 44
[2020-09-25 03:15:19,266 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:15:19,266 INFO  L479      AbstractCegarLoop]: Abstraction has 130 states and 136 transitions.
[2020-09-25 03:15:19,266 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-09-25 03:15:19,267 INFO  L276                IsEmpty]: Start isEmpty. Operand 130 states and 136 transitions.
[2020-09-25 03:15:19,270 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-09-25 03:15:19,270 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:15:19,270 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]
[2020-09-25 03:15:19,271 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-25 03:15:19,271 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:15:19,271 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:15:19,271 INFO  L82        PathProgramCache]: Analyzing trace with hash 784866741, now seen corresponding path program 1 times
[2020-09-25 03:15:19,272 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:15:19,275 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008363653]
[2020-09-25 03:15:19,275 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:15:19,295 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:19,312 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:19,403 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:19,582 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:20,912 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:22,642 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:23,009 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:24,117 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:24,408 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:24,411 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 52
[2020-09-25 03:15:24,411 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 7
[2020-09-25 03:15:24,411 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5112
[2020-09-25 03:15:24,412 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:24,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-09-25 03:15:24,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-09-25 03:15:24,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 51
[2020-09-25 03:15:24,412 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:24,894 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57
[2020-09-25 03:15:25,413 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:15:25,415 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:25,418 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:25,424 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:25,424 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:15:25,424 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:25,424 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 03:15:25,425 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:25,425 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:15:25,425 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:15:25,425 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:15:25,426 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:25,444 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 03:15:25,445 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008363653]
[2020-09-25 03:15:25,445 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 03:15:25,445 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17
[2020-09-25 03:15:25,446 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648300168]
[2020-09-25 03:15:25,446 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-09-25 03:15:25,446 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:15:25,447 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-09-25 03:15:25,447 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272
[2020-09-25 03:15:25,447 INFO  L87              Difference]: Start difference. First operand 130 states and 136 transitions. Second operand 17 states.
[2020-09-25 03:15:25,868 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68
[2020-09-25 03:15:26,174 WARN  L193               SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83
[2020-09-25 03:15:26,479 WARN  L193               SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80
[2020-09-25 03:15:26,930 WARN  L193               SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96
[2020-09-25 03:15:27,267 WARN  L193               SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93
[2020-09-25 03:15:27,564 WARN  L193               SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84
[2020-09-25 03:15:27,883 WARN  L193               SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87
[2020-09-25 03:15:28,216 WARN  L193               SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79
[2020-09-25 03:15:28,566 WARN  L193               SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82
[2020-09-25 03:15:28,848 WARN  L193               SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74
[2020-09-25 03:15:29,107 WARN  L193               SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71
[2020-09-25 03:15:29,353 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:15:29,353 INFO  L93              Difference]: Finished difference Result 187 states and 195 transitions.
[2020-09-25 03:15:29,354 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2020-09-25 03:15:29,354 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 45
[2020-09-25 03:15:29,354 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:15:29,355 INFO  L225             Difference]: With dead ends: 187
[2020-09-25 03:15:29,356 INFO  L226             Difference]: Without dead ends: 185
[2020-09-25 03:15:29,357 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930
[2020-09-25 03:15:29,358 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 185 states.
[2020-09-25 03:15:29,366 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 147.
[2020-09-25 03:15:29,366 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 147 states.
[2020-09-25 03:15:29,367 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 154 transitions.
[2020-09-25 03:15:29,368 INFO  L78                 Accepts]: Start accepts. Automaton has 147 states and 154 transitions. Word has length 45
[2020-09-25 03:15:29,368 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:15:29,368 INFO  L479      AbstractCegarLoop]: Abstraction has 147 states and 154 transitions.
[2020-09-25 03:15:29,368 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-09-25 03:15:29,368 INFO  L276                IsEmpty]: Start isEmpty. Operand 147 states and 154 transitions.
[2020-09-25 03:15:29,375 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2020-09-25 03:15:29,381 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:15:29,381 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]
[2020-09-25 03:15:29,381 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-09-25 03:15:29,381 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:15:29,382 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:15:29,382 INFO  L82        PathProgramCache]: Analyzing trace with hash 888731196, now seen corresponding path program 1 times
[2020-09-25 03:15:29,382 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:15:29,382 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873068019]
[2020-09-25 03:15:29,383 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:15:29,404 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:29,428 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:29,506 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:29,699 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:31,759 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:31,761 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-25 03:15:31,762 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 03:15:31,762 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2353
[2020-09-25 03:15:31,762 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:31,762 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 14
[2020-09-25 03:15:31,763 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-09-25 03:15:31,764 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-09-25 03:15:31,764 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:15:32,300 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:15:32,303 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:32,305 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:32,307 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:32,308 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:15:32,308 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:32,308 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-25 03:15:32,308 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:32,309 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:15:32,309 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:15:32,309 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:15:32,309 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:32,322 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 03:15:32,323 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873068019]
[2020-09-25 03:15:32,323 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 03:15:32,323 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15
[2020-09-25 03:15:32,324 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359508981]
[2020-09-25 03:15:32,324 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-09-25 03:15:32,325 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:15:32,325 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-09-25 03:15:32,325 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210
[2020-09-25 03:15:32,325 INFO  L87              Difference]: Start difference. First operand 147 states and 154 transitions. Second operand 15 states.
[2020-09-25 03:15:33,465 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:15:33,466 INFO  L93              Difference]: Finished difference Result 199 states and 208 transitions.
[2020-09-25 03:15:33,466 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-09-25 03:15:33,467 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 49
[2020-09-25 03:15:33,467 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:15:33,469 INFO  L225             Difference]: With dead ends: 199
[2020-09-25 03:15:33,469 INFO  L226             Difference]: Without dead ends: 172
[2020-09-25 03:15:33,470 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702
[2020-09-25 03:15:33,470 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 172 states.
[2020-09-25 03:15:33,475 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 139.
[2020-09-25 03:15:33,476 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 139 states.
[2020-09-25 03:15:33,477 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 145 transitions.
[2020-09-25 03:15:33,477 INFO  L78                 Accepts]: Start accepts. Automaton has 139 states and 145 transitions. Word has length 49
[2020-09-25 03:15:33,477 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:15:33,477 INFO  L479      AbstractCegarLoop]: Abstraction has 139 states and 145 transitions.
[2020-09-25 03:15:33,477 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-09-25 03:15:33,478 INFO  L276                IsEmpty]: Start isEmpty. Operand 139 states and 145 transitions.
[2020-09-25 03:15:33,479 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-09-25 03:15:33,479 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:15:33,479 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 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]
[2020-09-25 03:15:33,479 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-09-25 03:15:33,479 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:15:33,480 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:15:33,480 INFO  L82        PathProgramCache]: Analyzing trace with hash 1939042985, now seen corresponding path program 2 times
[2020-09-25 03:15:33,480 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:15:33,480 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479067498]
[2020-09-25 03:15:33,481 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:15:33,497 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:33,513 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:33,765 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:33,766 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 59
[2020-09-25 03:15:33,766 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:33,766 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 267
[2020-09-25 03:15:33,767 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:33,767 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-25 03:15:33,767 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-09-25 03:15:33,768 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-09-25 03:15:33,768 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:15:33,868 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:15:33,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:33,872 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:33,878 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:33,878 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:15:33,879 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:33,879 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 03:15:33,880 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:33,880 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:15:33,880 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:15:33,881 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:15:33,881 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:15:33,897 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-09-25 03:15:33,898 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479067498]
[2020-09-25 03:15:33,898 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 03:15:33,899 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-25 03:15:33,899 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690891252]
[2020-09-25 03:15:33,899 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 03:15:33,900 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:15:33,900 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 03:15:33,900 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-09-25 03:15:33,901 INFO  L87              Difference]: Start difference. First operand 139 states and 145 transitions. Second operand 7 states.
[2020-09-25 03:15:34,236 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:15:34,236 INFO  L93              Difference]: Finished difference Result 167 states and 174 transitions.
[2020-09-25 03:15:34,236 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-09-25 03:15:34,236 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 52
[2020-09-25 03:15:34,237 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:15:34,238 INFO  L225             Difference]: With dead ends: 167
[2020-09-25 03:15:34,238 INFO  L226             Difference]: Without dead ends: 126
[2020-09-25 03:15:34,239 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132
[2020-09-25 03:15:34,239 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 126 states.
[2020-09-25 03:15:34,243 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123.
[2020-09-25 03:15:34,244 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 123 states.
[2020-09-25 03:15:34,244 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 128 transitions.
[2020-09-25 03:15:34,245 INFO  L78                 Accepts]: Start accepts. Automaton has 123 states and 128 transitions. Word has length 52
[2020-09-25 03:15:34,245 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:15:34,245 INFO  L479      AbstractCegarLoop]: Abstraction has 123 states and 128 transitions.
[2020-09-25 03:15:34,245 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 03:15:34,245 INFO  L276                IsEmpty]: Start isEmpty. Operand 123 states and 128 transitions.
[2020-09-25 03:15:34,246 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2020-09-25 03:15:34,246 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:15:34,246 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]
[2020-09-25 03:15:34,247 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-09-25 03:15:34,247 INFO  L427      AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:15:34,247 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:15:34,247 INFO  L82        PathProgramCache]: Analyzing trace with hash 1051665877, now seen corresponding path program 1 times
[2020-09-25 03:15:34,247 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:15:34,248 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316851259]
[2020-09-25 03:15:34,248 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:15:34,275 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:34,303 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:34,597 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:34,992 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:38,549 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:38,550 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 61
[2020-09-25 03:15:38,550 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 03:15:38,551 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4273
[2020-09-25 03:15:38,551 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:38,551 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-25 03:15:38,552 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-25 03:15:38,552 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-09-25 03:15:38,552 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:15:38,830 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:15:38,831 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:38,832 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:38,838 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:38,838 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:15:38,838 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:38,838 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-25 03:15:38,838 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:38,839 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:15:38,839 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:15:38,839 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:15:38,839 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:38,853 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 03:15:38,853 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316851259]
[2020-09-25 03:15:38,854 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 03:15:38,854 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17
[2020-09-25 03:15:38,854 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373748371]
[2020-09-25 03:15:38,855 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-09-25 03:15:38,856 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:15:38,856 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-09-25 03:15:38,857 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272
[2020-09-25 03:15:38,857 INFO  L87              Difference]: Start difference. First operand 123 states and 128 transitions. Second operand 17 states.
[2020-09-25 03:15:39,683 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:15:39,683 INFO  L93              Difference]: Finished difference Result 133 states and 138 transitions.
[2020-09-25 03:15:39,683 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2020-09-25 03:15:39,684 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 54
[2020-09-25 03:15:39,684 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:15:39,685 INFO  L225             Difference]: With dead ends: 133
[2020-09-25 03:15:39,685 INFO  L226             Difference]: Without dead ends: 131
[2020-09-25 03:15:39,686 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=267, Invalid=663, Unknown=0, NotChecked=0, Total=930
[2020-09-25 03:15:39,686 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2020-09-25 03:15:39,693 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 95.
[2020-09-25 03:15:39,693 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 95 states.
[2020-09-25 03:15:39,694 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions.
[2020-09-25 03:15:39,694 INFO  L78                 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 54
[2020-09-25 03:15:39,694 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:15:39,694 INFO  L479      AbstractCegarLoop]: Abstraction has 95 states and 98 transitions.
[2020-09-25 03:15:39,694 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-09-25 03:15:39,695 INFO  L276                IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions.
[2020-09-25 03:15:39,696 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2020-09-25 03:15:39,697 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:15:39,697 INFO  L422         BasicCegarLoop]: trace histogram [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]
[2020-09-25 03:15:39,697 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-09-25 03:15:39,697 INFO  L427      AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:15:39,697 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:15:39,698 INFO  L82        PathProgramCache]: Analyzing trace with hash 999535374, now seen corresponding path program 1 times
[2020-09-25 03:15:39,698 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:15:39,698 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772663251]
[2020-09-25 03:15:39,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:15:39,723 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:39,745 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:40,630 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:40,630 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 62
[2020-09-25 03:15:40,630 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:40,631 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 906
[2020-09-25 03:15:40,631 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:40,631 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-09-25 03:15:40,631 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-09-25 03:15:40,631 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-09-25 03:15:40,631 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:41,068 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:15:41,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:41,071 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:41,077 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:41,078 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:15:41,078 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:41,078 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 03:15:41,079 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:41,079 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:15:41,079 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:15:41,080 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:15:41,080 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:15:41,105 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 03:15:41,105 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772663251]
[2020-09-25 03:15:41,106 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 03:15:41,106 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17
[2020-09-25 03:15:41,106 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571829578]
[2020-09-25 03:15:41,107 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-09-25 03:15:41,107 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:15:41,107 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-09-25 03:15:41,108 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272
[2020-09-25 03:15:41,108 INFO  L87              Difference]: Start difference. First operand 95 states and 98 transitions. Second operand 17 states.
[2020-09-25 03:15:42,629 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:15:42,629 INFO  L93              Difference]: Finished difference Result 175 states and 181 transitions.
[2020-09-25 03:15:42,630 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2020-09-25 03:15:42,630 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 55
[2020-09-25 03:15:42,630 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:15:42,631 INFO  L225             Difference]: With dead ends: 175
[2020-09-25 03:15:42,631 INFO  L226             Difference]: Without dead ends: 172
[2020-09-25 03:15:42,632 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930
[2020-09-25 03:15:42,633 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 172 states.
[2020-09-25 03:15:42,639 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 128.
[2020-09-25 03:15:42,639 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 128 states.
[2020-09-25 03:15:42,640 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions.
[2020-09-25 03:15:42,640 INFO  L78                 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 55
[2020-09-25 03:15:42,640 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:15:42,640 INFO  L479      AbstractCegarLoop]: Abstraction has 128 states and 133 transitions.
[2020-09-25 03:15:42,641 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-09-25 03:15:42,641 INFO  L276                IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions.
[2020-09-25 03:15:42,641 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2020-09-25 03:15:42,642 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:15:42,642 INFO  L422         BasicCegarLoop]: trace histogram [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]
[2020-09-25 03:15:42,642 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2020-09-25 03:15:42,642 INFO  L427      AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:15:42,643 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:15:42,643 INFO  L82        PathProgramCache]: Analyzing trace with hash 754417445, now seen corresponding path program 1 times
[2020-09-25 03:15:42,643 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:15:42,643 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485317869]
[2020-09-25 03:15:42,644 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:15:42,679 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:42,714 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:45,112 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:45,113 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 72
[2020-09-25 03:15:45,113 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:45,113 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2432
[2020-09-25 03:15:45,114 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:45,114 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 23
[2020-09-25 03:15:45,114 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-09-25 03:15:45,114 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 51
[2020-09-25 03:15:45,115 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:15:45,834 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:15:45,836 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:45,837 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:45,842 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:45,843 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:15:45,843 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:45,843 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-25 03:15:45,843 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:45,844 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:15:45,844 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:15:45,844 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:15:45,844 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:45,865 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 03:15:45,866 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485317869]
[2020-09-25 03:15:45,866 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 03:15:45,866 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22
[2020-09-25 03:15:45,866 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932669284]
[2020-09-25 03:15:45,867 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-09-25 03:15:45,867 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:15:45,867 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-09-25 03:15:45,868 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462
[2020-09-25 03:15:45,868 INFO  L87              Difference]: Start difference. First operand 128 states and 133 transitions. Second operand 22 states.
[2020-09-25 03:15:47,216 WARN  L193               SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45
[2020-09-25 03:15:48,135 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:15:48,135 INFO  L93              Difference]: Finished difference Result 205 states and 212 transitions.
[2020-09-25 03:15:48,136 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2020-09-25 03:15:48,136 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states. Word has length 65
[2020-09-25 03:15:48,136 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:15:48,138 INFO  L225             Difference]: With dead ends: 205
[2020-09-25 03:15:48,138 INFO  L226             Difference]: Without dead ends: 202
[2020-09-25 03:15:48,139 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806
[2020-09-25 03:15:48,140 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 202 states.
[2020-09-25 03:15:48,146 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140.
[2020-09-25 03:15:48,146 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 140 states.
[2020-09-25 03:15:48,147 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 145 transitions.
[2020-09-25 03:15:48,147 INFO  L78                 Accepts]: Start accepts. Automaton has 140 states and 145 transitions. Word has length 65
[2020-09-25 03:15:48,148 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:15:48,148 INFO  L479      AbstractCegarLoop]: Abstraction has 140 states and 145 transitions.
[2020-09-25 03:15:48,148 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-09-25 03:15:48,148 INFO  L276                IsEmpty]: Start isEmpty. Operand 140 states and 145 transitions.
[2020-09-25 03:15:48,149 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 72
[2020-09-25 03:15:48,149 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:15:48,149 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 03:15:48,150 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2020-09-25 03:15:48,150 INFO  L427      AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:15:48,150 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:15:48,151 INFO  L82        PathProgramCache]: Analyzing trace with hash 715756074, now seen corresponding path program 1 times
[2020-09-25 03:15:48,151 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:15:48,151 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75189842]
[2020-09-25 03:15:48,151 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:15:48,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:48,204 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:48,687 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:49,091 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:50,566 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:51,494 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:53,049 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:53,368 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:53,368 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 78
[2020-09-25 03:15:53,368 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-25 03:15:53,369 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5189
[2020-09-25 03:15:53,369 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:53,369 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-09-25 03:15:53,369 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-09-25 03:15:53,369 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 72
[2020-09-25 03:15:53,370 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:53,784 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:15:53,785 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:53,787 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:53,792 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:15:53,793 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:15:53,793 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:15:53,794 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-25 03:15:53,794 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:15:53,794 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:15:53,794 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:15:53,795 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:15:53,795 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:15:53,818 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 03:15:53,819 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75189842]
[2020-09-25 03:15:53,819 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 03:15:53,819 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16
[2020-09-25 03:15:53,821 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193434639]
[2020-09-25 03:15:53,822 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-09-25 03:15:53,822 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:15:53,822 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-09-25 03:15:53,823 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240
[2020-09-25 03:15:53,823 INFO  L87              Difference]: Start difference. First operand 140 states and 145 transitions. Second operand 16 states.
[2020-09-25 03:15:54,973 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:15:54,974 INFO  L93              Difference]: Finished difference Result 229 states and 238 transitions.
[2020-09-25 03:15:54,974 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2020-09-25 03:15:54,974 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 71
[2020-09-25 03:15:54,975 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:15:54,976 INFO  L225             Difference]: With dead ends: 229
[2020-09-25 03:15:54,977 INFO  L226             Difference]: Without dead ends: 207
[2020-09-25 03:15:54,978 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992
[2020-09-25 03:15:54,978 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 207 states.
[2020-09-25 03:15:54,984 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 168.
[2020-09-25 03:15:54,985 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 168 states.
[2020-09-25 03:15:54,985 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 174 transitions.
[2020-09-25 03:15:54,986 INFO  L78                 Accepts]: Start accepts. Automaton has 168 states and 174 transitions. Word has length 71
[2020-09-25 03:15:54,986 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:15:54,986 INFO  L479      AbstractCegarLoop]: Abstraction has 168 states and 174 transitions.
[2020-09-25 03:15:54,986 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-09-25 03:15:54,986 INFO  L276                IsEmpty]: Start isEmpty. Operand 168 states and 174 transitions.
[2020-09-25 03:15:54,987 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2020-09-25 03:15:54,987 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:15:54,988 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 03:15:54,988 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2020-09-25 03:15:54,988 INFO  L427      AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:15:54,988 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:15:54,988 INFO  L82        PathProgramCache]: Analyzing trace with hash 181469332, now seen corresponding path program 2 times
[2020-09-25 03:15:54,989 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:15:54,989 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502326356]
[2020-09-25 03:15:54,989 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:15:55,011 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:15:55,036 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:15:55,330 FATAL L256   erpolLogProxyWrapper]: Now shrinking...