/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label13.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-14 01:16:13,596 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-14 01:16:13,599 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-14 01:16:13,621 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-14 01:16:13,621 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-14 01:16:13,622 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-14 01:16:13,623 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-14 01:16:13,625 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-14 01:16:13,627 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-14 01:16:13,627 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-14 01:16:13,628 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-14 01:16:13,629 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-14 01:16:13,630 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-14 01:16:13,631 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-14 01:16:13,632 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-14 01:16:13,633 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-14 01:16:13,633 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-14 01:16:13,634 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-14 01:16:13,636 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-14 01:16:13,638 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-14 01:16:13,639 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-14 01:16:13,640 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-14 01:16:13,641 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-14 01:16:13,642 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-14 01:16:13,646 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-14 01:16:13,646 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-14 01:16:13,647 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-14 01:16:13,649 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-14 01:16:13,649 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-14 01:16:13,653 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-14 01:16:13,653 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-14 01:16:13,653 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-14 01:16:13,654 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-14 01:16:13,657 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-14 01:16:13,658 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-14 01:16:13,658 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-14 01:16:13,659 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-14 01:16:13,659 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-14 01:16:13,659 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-14 01:16:13,661 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-14 01:16:13,662 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-14 01:16:13,663 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-14 01:16:13,708 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-14 01:16:13,708 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-14 01:16:13,712 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-14 01:16:13,713 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-14 01:16:13,713 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-14 01:16:13,713 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-14 01:16:13,713 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-14 01:16:13,714 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-14 01:16:13,714 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-14 01:16:13,714 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-14 01:16:13,714 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-14 01:16:13,714 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-14 01:16:13,714 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-14 01:16:13,715 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-14 01:16:13,715 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-14 01:16:13,718 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-14 01:16:13,718 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-14 01:16:13,718 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-14 01:16:13,719 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-14 01:16:13,719 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-14 01:16:13,719 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-14 01:16:13,719 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:16:13,719 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-14 01:16:13,720 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-14 01:16:13,720 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-14 01:16:13,720 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-14 01:16:13,720 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-14 01:16:13,720 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-14 01:16:13,721 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-14 01:16:13,721 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
[2020-10-14 01:16:14,010 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-14 01:16:14,027 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-14 01:16:14,030 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-14 01:16:14,031 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-14 01:16:14,031 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-14 01:16:14,032 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label13.c
[2020-10-14 01:16:14,090 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9e04154b/91606cb705624d0e9f3d0f4bbd12a8d5/FLAGaaf209200
[2020-10-14 01:16:14,985 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-14 01:16:14,986 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label13.c
[2020-10-14 01:16:15,032 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9e04154b/91606cb705624d0e9f3d0f4bbd12a8d5/FLAGaaf209200
[2020-10-14 01:16:15,422 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9e04154b/91606cb705624d0e9f3d0f4bbd12a8d5
[2020-10-14 01:16:15,433 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-14 01:16:15,435 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-14 01:16:15,436 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-14 01:16:15,436 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-14 01:16:15,440 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-14 01:16:15,441 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:16:15" (1/1) ...
[2020-10-14 01:16:15,444 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603d5fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:16:15, skipping insertion in model container
[2020-10-14 01:16:15,444 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:16:15" (1/1) ...
[2020-10-14 01:16:15,452 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-14 01:16:15,737 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-14 01:16:18,206 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:16:18,216 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-14 01:16:19,306 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:16:19,364 INFO  L208         MainTranslator]: Completed translation
[2020-10-14 01:16:19,365 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:16:19 WrapperNode
[2020-10-14 01:16:19,365 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-14 01:16:19,366 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-14 01:16:19,366 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-14 01:16:19,366 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-14 01:16:19,378 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:16:19" (1/1) ...
[2020-10-14 01:16:19,378 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:16:19" (1/1) ...
[2020-10-14 01:16:19,452 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:16:19" (1/1) ...
[2020-10-14 01:16:19,453 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:16:19" (1/1) ...
[2020-10-14 01:16:19,626 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:16:19" (1/1) ...
[2020-10-14 01:16:19,692 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:16:19" (1/1) ...
[2020-10-14 01:16:19,933 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:16:19" (1/1) ...
[2020-10-14 01:16:20,010 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-14 01:16:20,011 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-14 01:16:20,011 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-14 01:16:20,011 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-14 01:16:20,012 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:16:19" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:16:20,091 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-14 01:16:20,092 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-14 01:16:20,092 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-14 01:16:20,092 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-14 01:16:20,092 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-14 01:16:20,093 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-14 01:16:20,093 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-14 01:16:20,094 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-14 01:16:20,094 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-14 01:16:20,095 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-14 01:16:20,095 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-14 01:16:20,095 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-14 01:16:20,095 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-14 01:16:20,095 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-14 01:16:20,096 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-14 01:16:20,096 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-14 01:16:20,097 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-14 01:16:20,097 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-14 01:16:20,097 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-14 01:16:20,097 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-14 01:16:20,098 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-14 01:16:20,098 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-14 01:16:20,098 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-14 01:16:20,098 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-14 01:16:20,098 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-14 01:16:27,708 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-14 01:16:27,708 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-14 01:16:27,725 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:16:27 BoogieIcfgContainer
[2020-10-14 01:16:27,725 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-14 01:16:27,726 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-14 01:16:27,726 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-14 01:16:27,729 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-14 01:16:27,730 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:16:15" (1/3) ...
[2020-10-14 01:16:27,731 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50407fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:16:27, skipping insertion in model container
[2020-10-14 01:16:27,731 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:16:19" (2/3) ...
[2020-10-14 01:16:27,731 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50407fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:16:27, skipping insertion in model container
[2020-10-14 01:16:27,731 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:16:27" (3/3) ...
[2020-10-14 01:16:27,733 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label13.c
[2020-10-14 01:16:27,743 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-14 01:16:27,752 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-14 01:16:27,766 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-14 01:16:27,798 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-14 01:16:27,798 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-14 01:16:27,799 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-14 01:16:27,799 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-14 01:16:27,799 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-14 01:16:27,799 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-14 01:16:27,799 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-14 01:16:27,799 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-14 01:16:27,847 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-14 01:16:27,941 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1659
[2020-10-14 01:16:27,941 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:16:27,944 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:16:27,945 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:16:27,950 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:16:27,952 INFO  L82        PathProgramCache]: Analyzing trace with hash -690348559, now seen corresponding path program 1 times
[2020-10-14 01:16:27,961 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:16:27,961 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497161364]
[2020-10-14 01:16:27,962 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:16:28,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:29,463 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:33,984 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:33,985 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1680
[2020-10-14 01:16:33,985 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:33,985 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5098
[2020-10-14 01:16:33,988 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:33,988 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:33,988 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-14 01:16:33,988 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:16:33,989 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1674
[2020-10-14 01:16:33,989 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 01:16:35,443 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:16:35,452 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:35,454 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:35,468 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:35,468 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:16:35,468 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:35,469 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-14 01:16:35,469 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:35,470 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:35,470 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:16:35,470 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:16:35,470 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:16:35,471 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:16:37,709 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:16:37,710 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497161364]
[2020-10-14 01:16:37,712 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:16:37,712 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-14 01:16:37,713 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210709481]
[2020-10-14 01:16:37,722 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-14 01:16:37,722 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:16:37,733 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-14 01:16:37,733 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-14 01:16:37,735 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 4 states.
[2020-10-14 01:16:53,268 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:16:53,268 INFO  L93              Difference]: Finished difference Result 6310 states and 11850 transitions.
[2020-10-14 01:16:53,269 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 01:16:53,270 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1658
[2020-10-14 01:16:53,279 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:16:53,326 INFO  L225             Difference]: With dead ends: 6310
[2020-10-14 01:16:53,327 INFO  L226             Difference]: Without dead ends: 4024
[2020-10-14 01:16:53,339 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:16:53,361 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4024 states.
[2020-10-14 01:16:53,548 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3997.
[2020-10-14 01:16:53,549 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3997 states.
[2020-10-14 01:16:53,567 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6427 transitions.
[2020-10-14 01:16:53,569 INFO  L78                 Accepts]: Start accepts. Automaton has 3997 states and 6427 transitions. Word has length 1658
[2020-10-14 01:16:53,573 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:16:53,573 INFO  L479      AbstractCegarLoop]: Abstraction has 3997 states and 6427 transitions.
[2020-10-14 01:16:53,573 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-14 01:16:53,574 INFO  L276                IsEmpty]: Start isEmpty. Operand 3997 states and 6427 transitions.
[2020-10-14 01:16:53,670 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1668
[2020-10-14 01:16:53,670 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:16:53,672 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:16:53,672 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-14 01:16:53,672 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:16:53,673 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:16:53,674 INFO  L82        PathProgramCache]: Analyzing trace with hash 1572520550, now seen corresponding path program 1 times
[2020-10-14 01:16:53,674 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:16:53,674 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487430387]
[2020-10-14 01:16:53,675 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:16:53,782 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:53,809 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:56,051 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:58,993 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:58,993 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1691
[2020-10-14 01:16:58,994 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:16:58,999 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5208
[2020-10-14 01:16:59,000 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:59,000 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:59,000 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:16:59,001 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:16:59,001 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-14 01:16:59,001 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:17:00,469 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:17:00,472 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:00,474 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:00,480 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:00,480 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:17:00,480 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:17:00,481 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-14 01:17:00,481 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:00,481 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:00,481 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:17:00,482 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:17:00,482 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:17:00,482 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:17:00,508 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:17:00,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:00,514 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:00,527 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:00,527 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-14 01:17:00,527 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:17:00,528 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-10-14 01:17:00,528 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:00,528 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:00,528 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:17:00,529 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:17:00,529 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-14 01:17:00,529 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:17:01,999 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:17:02,000 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487430387]
[2020-10-14 01:17:02,000 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:17:02,000 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:17:02,000 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165093433]
[2020-10-14 01:17:02,004 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:17:02,005 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:17:02,005 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:17:02,005 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:17:02,005 INFO  L87              Difference]: Start difference. First operand 3997 states and 6427 transitions. Second operand 7 states.
[2020-10-14 01:17:23,287 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:17:23,287 INFO  L93              Difference]: Finished difference Result 11927 states and 19333 transitions.
[2020-10-14 01:17:23,288 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:17:23,288 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1667
[2020-10-14 01:17:23,289 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:17:23,327 INFO  L225             Difference]: With dead ends: 11927
[2020-10-14 01:17:23,328 INFO  L226             Difference]: Without dead ends: 7936
[2020-10-14 01:17:23,339 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:17:23,348 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7936 states.
[2020-10-14 01:17:23,529 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7936 to 7713.
[2020-10-14 01:17:23,529 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7713 states.
[2020-10-14 01:17:23,565 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 11559 transitions.
[2020-10-14 01:17:23,566 INFO  L78                 Accepts]: Start accepts. Automaton has 7713 states and 11559 transitions. Word has length 1667
[2020-10-14 01:17:23,566 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:17:23,566 INFO  L479      AbstractCegarLoop]: Abstraction has 7713 states and 11559 transitions.
[2020-10-14 01:17:23,567 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:17:23,567 INFO  L276                IsEmpty]: Start isEmpty. Operand 7713 states and 11559 transitions.
[2020-10-14 01:17:23,646 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1682
[2020-10-14 01:17:23,646 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:17:23,647 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:17:23,648 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-14 01:17:23,648 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:17:23,648 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:17:23,649 INFO  L82        PathProgramCache]: Analyzing trace with hash 1092157694, now seen corresponding path program 1 times
[2020-10-14 01:17:23,649 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:17:23,649 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409148224]
[2020-10-14 01:17:23,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:17:23,813 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:23,879 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:24,284 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:26,181 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:28,819 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:28,820 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1707
[2020-10-14 01:17:28,820 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:17:28,820 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5003
[2020-10-14 01:17:28,821 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:28,821 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:28,821 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:17:28,821 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-10-14 01:17:28,821 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-14 01:17:28,822 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:17:29,181 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:17:29,183 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:29,185 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:29,188 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:29,188 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:17:29,188 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:17:29,189 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-14 01:17:29,189 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:29,189 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:29,190 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:17:29,190 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:17:29,190 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:17:29,191 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:17:29,210 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:17:29,214 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:29,216 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:29,227 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:29,227 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-14 01:17:29,227 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:17:29,228 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-10-14 01:17:29,228 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:29,228 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:29,228 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:17:29,229 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:17:29,229 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-14 01:17:29,229 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:17:29,232 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-14 01:17:29,237 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:29,240 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:29,260 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:29,260 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-14 01:17:29,260 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:17:29,261 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-10-14 01:17:29,261 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:29,262 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:29,262 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:17:29,262 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:17:29,262 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-10-14 01:17:29,262 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:17:30,382 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-14 01:17:30,383 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409148224]
[2020-10-14 01:17:30,383 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:17:30,383 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-14 01:17:30,383 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255197233]
[2020-10-14 01:17:30,387 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:17:30,388 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:17:30,388 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:17:30,388 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:17:30,388 INFO  L87              Difference]: Start difference. First operand 7713 states and 11559 transitions. Second operand 7 states.
[2020-10-14 01:17:53,904 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:17:53,905 INFO  L93              Difference]: Finished difference Result 19518 states and 30642 transitions.
[2020-10-14 01:17:53,906 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-14 01:17:53,906 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1681
[2020-10-14 01:17:53,906 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:17:53,973 INFO  L225             Difference]: With dead ends: 19518
[2020-10-14 01:17:53,973 INFO  L226             Difference]: Without dead ends: 11811
[2020-10-14 01:17:53,995 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:17:54,008 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11811 states.
[2020-10-14 01:17:54,240 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11811 to 11635.
[2020-10-14 01:17:54,241 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11635 states.
[2020-10-14 01:17:54,286 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11635 states to 11635 states and 16695 transitions.
[2020-10-14 01:17:54,286 INFO  L78                 Accepts]: Start accepts. Automaton has 11635 states and 16695 transitions. Word has length 1681
[2020-10-14 01:17:54,287 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:17:54,287 INFO  L479      AbstractCegarLoop]: Abstraction has 11635 states and 16695 transitions.
[2020-10-14 01:17:54,288 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:17:54,288 INFO  L276                IsEmpty]: Start isEmpty. Operand 11635 states and 16695 transitions.
[2020-10-14 01:17:54,353 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1697
[2020-10-14 01:17:54,354 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:17:54,355 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:17:54,355 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-14 01:17:54,355 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:17:54,356 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:17:54,356 INFO  L82        PathProgramCache]: Analyzing trace with hash -1458155957, now seen corresponding path program 1 times
[2020-10-14 01:17:54,357 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:17:54,357 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537746680]
[2020-10-14 01:17:54,358 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:17:54,472 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:54,505 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:55,786 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:56,446 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:57,984 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:59,607 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:59,607 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1720
[2020-10-14 01:17:59,608 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-14 01:17:59,608 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5131
[2020-10-14 01:17:59,608 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:59,608 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:59,608 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:17:59,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:17:59,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 43
[2020-10-14 01:17:59,609 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:17:59,945 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:17:59,947 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:59,950 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:59,953 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:59,953 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:17:59,953 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:17:59,954 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-14 01:17:59,954 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:59,954 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:59,954 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:17:59,955 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:17:59,955 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:17:59,955 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:17:59,972 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:17:59,980 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:59,986 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:18:00,002 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:18:00,094 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:18:00,094 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 39
[2020-10-14 01:18:00,096 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:18:00,096 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 112
[2020-10-14 01:18:00,096 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:18:00,096 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:18:00,097 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:18:00,097 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:18:00,097 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-10-14 01:18:00,097 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:18:01,655 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:18:01,655 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537746680]
[2020-10-14 01:18:01,655 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:18:01,656 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-10-14 01:18:01,656 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009803669]
[2020-10-14 01:18:01,658 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-14 01:18:01,658 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:18:01,659 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-14 01:18:01,659 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-14 01:18:01,659 INFO  L87              Difference]: Start difference. First operand 11635 states and 16695 transitions. Second operand 8 states.
[2020-10-14 01:18:33,431 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:18:33,431 INFO  L93              Difference]: Finished difference Result 46307 states and 71960 transitions.
[2020-10-14 01:18:33,432 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-14 01:18:33,432 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1696
[2020-10-14 01:18:33,432 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:18:33,567 INFO  L225             Difference]: With dead ends: 46307
[2020-10-14 01:18:33,567 INFO  L226             Difference]: Without dead ends: 34678
[2020-10-14 01:18:33,607 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-14 01:18:33,647 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34678 states.
[2020-10-14 01:18:34,342 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34678 to 34614.
[2020-10-14 01:18:34,342 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34614 states.
[2020-10-14 01:18:34,432 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34614 states to 34614 states and 49802 transitions.
[2020-10-14 01:18:34,433 INFO  L78                 Accepts]: Start accepts. Automaton has 34614 states and 49802 transitions. Word has length 1696
[2020-10-14 01:18:34,433 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:18:34,434 INFO  L479      AbstractCegarLoop]: Abstraction has 34614 states and 49802 transitions.
[2020-10-14 01:18:34,434 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-14 01:18:34,434 INFO  L276                IsEmpty]: Start isEmpty. Operand 34614 states and 49802 transitions.
[2020-10-14 01:18:34,571 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1699
[2020-10-14 01:18:34,571 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:18:34,573 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:18:34,573 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-14 01:18:34,573 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:18:34,574 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:18:34,574 INFO  L82        PathProgramCache]: Analyzing trace with hash -1490687552, now seen corresponding path program 1 times
[2020-10-14 01:18:34,575 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:18:34,575 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441614890]
[2020-10-14 01:18:34,575 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:18:34,879 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:18:34,917 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:18:35,198 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:18:40,147 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:18:40,147 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1722
[2020-10-14 01:18:40,147 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:18:40,148 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5265
[2020-10-14 01:18:40,148 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:18:40,148 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:18:40,148 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:18:40,148 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:18:40,148 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-10-14 01:18:40,148 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:18:40,423 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:18:40,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:18:40,427 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:18:40,431 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:18:40,431 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:18:40,431 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:18:40,431 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-14 01:18:40,432 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:18:40,432 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:18:40,432 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:18:40,432 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:18:40,432 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:18:40,432 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:18:40,450 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:18:40,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:18:40,463 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:18:40,492 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:18:40,493 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-14 01:18:40,493 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:18:40,493 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 33
[2020-10-14 01:18:40,493 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:18:40,494 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:18:40,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:18:40,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:18:40,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-10-14 01:18:40,494 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:18:41,635 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:18:41,635 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441614890]
[2020-10-14 01:18:41,636 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:18:41,636 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-10-14 01:18:41,636 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828548778]
[2020-10-14 01:18:41,637 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-14 01:18:41,637 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:18:41,638 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-14 01:18:41,638 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-14 01:18:41,638 INFO  L87              Difference]: Start difference. First operand 34614 states and 49802 transitions. Second operand 8 states.
[2020-10-14 01:19:12,832 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:19:12,833 INFO  L93              Difference]: Finished difference Result 135834 states and 226610 transitions.
[2020-10-14 01:19:12,834 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-14 01:19:12,834 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1698
[2020-10-14 01:19:12,835 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:19:13,291 INFO  L225             Difference]: With dead ends: 135834
[2020-10-14 01:19:13,291 INFO  L226             Difference]: Without dead ends: 101226
[2020-10-14 01:19:13,450 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-14 01:19:13,544 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 101226 states.
[2020-10-14 01:19:15,600 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 101226 to 100726.
[2020-10-14 01:19:15,600 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 100726 states.
[2020-10-14 01:19:15,812 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 100726 states to 100726 states and 158424 transitions.
[2020-10-14 01:19:15,813 INFO  L78                 Accepts]: Start accepts. Automaton has 100726 states and 158424 transitions. Word has length 1698
[2020-10-14 01:19:15,813 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:19:15,813 INFO  L479      AbstractCegarLoop]: Abstraction has 100726 states and 158424 transitions.
[2020-10-14 01:19:15,813 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-14 01:19:15,814 INFO  L276                IsEmpty]: Start isEmpty. Operand 100726 states and 158424 transitions.
[2020-10-14 01:19:18,947 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1700
[2020-10-14 01:19:18,948 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:19:18,949 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2020-10-14 01:19:18,949 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-14 01:19:18,950 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:19:18,950 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:19:18,951 INFO  L82        PathProgramCache]: Analyzing trace with hash -1256599560, now seen corresponding path program 1 times
[2020-10-14 01:19:18,951 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:19:18,951 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178531792]
[2020-10-14 01:19:18,952 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:19:19,249 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:19:19,420 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:20,702 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:24,363 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:24,363 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1723
[2020-10-14 01:19:24,363 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:19:24,363 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5110
[2020-10-14 01:19:24,364 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:24,364 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:24,364 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:19:24,364 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:19:24,364 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-14 01:19:24,364 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:19:24,959 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:19:24,963 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:19:24,965 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:24,970 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:24,971 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:19:24,971 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:19:24,971 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-14 01:19:24,971 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:24,972 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:24,972 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:19:24,972 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:19:24,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:19:24,973 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:19:25,029 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:19:25,043 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:19:25,054 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:25,127 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:25,128 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 42
[2020-10-14 01:19:25,128 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:19:25,129 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 83
[2020-10-14 01:19:25,129 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:25,129 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:25,130 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:19:25,130 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:19:25,130 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-10-14 01:19:25,131 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:19:27,117 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:19:27,117 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178531792]
[2020-10-14 01:19:27,117 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:19:27,118 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-10-14 01:19:27,118 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956171583]
[2020-10-14 01:19:27,120 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-14 01:19:27,120 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:19:27,120 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-14 01:19:27,120 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-14 01:19:27,120 INFO  L87              Difference]: Start difference. First operand 100726 states and 158424 transitions. Second operand 8 states.