/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label21.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-14 19:38:40,986 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-14 19:38:40,989 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-14 19:38:41,013 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-14 19:38:41,013 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-14 19:38:41,014 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-14 19:38:41,016 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-14 19:38:41,017 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-14 19:38:41,019 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-14 19:38:41,020 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-14 19:38:41,021 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-14 19:38:41,022 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-14 19:38:41,022 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-14 19:38:41,023 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-14 19:38:41,024 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-14 19:38:41,025 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-14 19:38:41,026 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-14 19:38:41,027 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-14 19:38:41,029 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-14 19:38:41,030 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-14 19:38:41,032 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-14 19:38:41,033 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-14 19:38:41,034 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-14 19:38:41,034 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-14 19:38:41,037 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-14 19:38:41,037 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-14 19:38:41,037 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-14 19:38:41,038 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-14 19:38:41,039 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-14 19:38:41,039 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-14 19:38:41,040 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-14 19:38:41,040 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-14 19:38:41,041 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-14 19:38:41,042 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-14 19:38:41,043 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-14 19:38:41,043 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-14 19:38:41,043 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-14 19:38:41,044 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-14 19:38:41,044 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-14 19:38:41,045 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-14 19:38:41,045 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-14 19:38:41,046 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 19:38:41,074 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-14 19:38:41,074 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-14 19:38:41,078 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-14 19:38:41,078 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-14 19:38:41,079 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-14 19:38:41,079 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-14 19:38:41,079 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-14 19:38:41,079 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-14 19:38:41,079 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-14 19:38:41,079 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-14 19:38:41,080 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-14 19:38:41,080 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-14 19:38:41,080 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-14 19:38:41,080 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-14 19:38:41,080 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-14 19:38:41,081 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-14 19:38:41,081 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-14 19:38:41,083 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-14 19:38:41,083 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-14 19:38:41,083 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-14 19:38:41,083 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-14 19:38:41,084 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 19:38:41,084 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-14 19:38:41,084 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-14 19:38:41,084 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-14 19:38:41,084 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-14 19:38:41,084 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-14 19:38:41,085 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-14 19:38:41,085 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-14 19:38:41,085 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true;
[2020-10-14 19:38:41,435 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-14 19:38:41,447 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-14 19:38:41,450 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-14 19:38:41,452 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-14 19:38:41,452 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-14 19:38:41,453 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label21.c
[2020-10-14 19:38:41,520 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/544780ba4/27f6c52c3d25459ca448623b8ef9ea0e/FLAGfe907187b
[2020-10-14 19:38:42,356 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-14 19:38:42,357 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label21.c
[2020-10-14 19:38:42,407 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/544780ba4/27f6c52c3d25459ca448623b8ef9ea0e/FLAGfe907187b
[2020-10-14 19:38:42,810 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/544780ba4/27f6c52c3d25459ca448623b8ef9ea0e
[2020-10-14 19:38:42,822 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-14 19:38:42,824 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-14 19:38:42,829 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-14 19:38:42,830 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-14 19:38:42,833 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-14 19:38:42,834 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:38:42" (1/1) ...
[2020-10-14 19:38:42,838 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38010784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:42, skipping insertion in model container
[2020-10-14 19:38:42,838 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:38:42" (1/1) ...
[2020-10-14 19:38:42,847 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-14 19:38:43,085 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-14 19:38:45,626 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 19:38:45,630 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-14 19:38:46,909 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 19:38:47,009 INFO  L208         MainTranslator]: Completed translation
[2020-10-14 19:38:47,020 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:47 WrapperNode
[2020-10-14 19:38:47,020 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-14 19:38:47,021 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-14 19:38:47,021 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-14 19:38:47,022 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-14 19:38:47,042 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:47" (1/1) ...
[2020-10-14 19:38:47,045 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:47" (1/1) ...
[2020-10-14 19:38:47,124 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:47" (1/1) ...
[2020-10-14 19:38:47,125 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:47" (1/1) ...
[2020-10-14 19:38:47,296 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:47" (1/1) ...
[2020-10-14 19:38:47,362 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:47" (1/1) ...
[2020-10-14 19:38:47,405 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:47" (1/1) ...
[2020-10-14 19:38:47,463 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-14 19:38:47,464 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-14 19:38:47,464 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-14 19:38:47,464 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-14 19:38:47,465 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:47" (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 19:38:47,530 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-14 19:38:47,530 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-14 19:38:47,530 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-14 19:38:47,530 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-14 19:38:47,530 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-14 19:38:47,531 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-14 19:38:47,531 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-14 19:38:47,531 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-14 19:38:47,531 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-14 19:38:47,531 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-14 19:38:47,531 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-14 19:38:47,532 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-14 19:38:47,532 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-14 19:38:47,532 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-14 19:38:47,532 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-14 19:38:47,532 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-14 19:38:47,532 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-14 19:38:47,533 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-14 19:38:47,533 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-14 19:38:47,536 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-14 19:38:47,536 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-14 19:38:47,536 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-14 19:38:47,536 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-14 19:38:47,537 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-14 19:38:47,537 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-14 19:38:55,279 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-14 19:38:55,279 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-14 19:38:55,298 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:38:55 BoogieIcfgContainer
[2020-10-14 19:38:55,298 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-14 19:38:55,300 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-14 19:38:55,300 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-14 19:38:55,304 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-14 19:38:55,304 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:38:42" (1/3) ...
[2020-10-14 19:38:55,305 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbfeebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:38:55, skipping insertion in model container
[2020-10-14 19:38:55,305 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:47" (2/3) ...
[2020-10-14 19:38:55,305 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbfeebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:38:55, skipping insertion in model container
[2020-10-14 19:38:55,305 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:38:55" (3/3) ...
[2020-10-14 19:38:55,307 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label21.c
[2020-10-14 19:38:55,317 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-14 19:38:55,326 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-14 19:38:55,340 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-14 19:38:55,372 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-14 19:38:55,372 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-14 19:38:55,372 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-14 19:38:55,372 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-14 19:38:55,372 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-14 19:38:55,373 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-14 19:38:55,373 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-14 19:38:55,373 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-14 19:38:55,423 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-14 19:38:55,519 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1688
[2020-10-14 19:38:55,520 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:38:55,522 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:55,523 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:38:55,529 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:38:55,530 INFO  L82        PathProgramCache]: Analyzing trace with hash 416949744, now seen corresponding path program 1 times
[2020-10-14 19:38:55,539 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:38:55,539 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726993269]
[2020-10-14 19:38:55,540 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:38:56,394 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:38:57,106 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:39:01,564 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:39:01,565 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1709
[2020-10-14 19:39:01,565 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:39:01,565 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5160
[2020-10-14 19:39:01,567 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:39:01,568 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:39:01,568 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-14 19:39:01,568 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 19:39:01,568 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1703
[2020-10-14 19:39:01,568 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 19:39:02,884 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:39:02,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:39:02,892 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:39:02,898 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:39:02,898 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:39:02,899 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:39:02,899 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-14 19:39:02,899 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:39:02,899 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:39:02,900 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:39:02,900 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:39:02,900 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 19:39:02,900 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:39:06,060 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 19:39:06,061 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726993269]
[2020-10-14 19:39:06,063 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 19:39:06,063 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-14 19:39:06,064 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266187141]
[2020-10-14 19:39:06,071 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-14 19:39:06,072 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:39:06,081 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-14 19:39:06,082 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-14 19:39:06,084 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 5 states.
[2020-10-14 19:39:29,067 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 19:39:29,067 INFO  L93              Difference]: Finished difference Result 8124 states and 15411 transitions.
[2020-10-14 19:39:29,068 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-14 19:39:29,070 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1687
[2020-10-14 19:39:29,077 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 19:39:29,127 INFO  L225             Difference]: With dead ends: 8124
[2020-10-14 19:39:29,127 INFO  L226             Difference]: Without dead ends: 5834
[2020-10-14 19:39:29,144 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-14 19:39:29,173 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5834 states.
[2020-10-14 19:39:29,414 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5801.
[2020-10-14 19:39:29,418 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5801 states.
[2020-10-14 19:39:29,447 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9374 transitions.
[2020-10-14 19:39:29,449 INFO  L78                 Accepts]: Start accepts. Automaton has 5801 states and 9374 transitions. Word has length 1687
[2020-10-14 19:39:29,454 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 19:39:29,454 INFO  L479      AbstractCegarLoop]: Abstraction has 5801 states and 9374 transitions.
[2020-10-14 19:39:29,454 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-14 19:39:29,454 INFO  L276                IsEmpty]: Start isEmpty. Operand 5801 states and 9374 transitions.
[2020-10-14 19:39:29,784 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1697
[2020-10-14 19:39:29,784 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:39:29,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:29,786 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-14 19:39:29,786 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:39:29,787 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:39:29,788 INFO  L82        PathProgramCache]: Analyzing trace with hash 1792438683, now seen corresponding path program 1 times
[2020-10-14 19:39:29,788 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:39:29,789 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103574113]
[2020-10-14 19:39:29,789 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:39:29,900 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:39:29,928 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:39:32,014 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:39:35,001 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:39:35,001 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1720
[2020-10-14 19:39:35,002 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 19:39:35,002 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5098
[2020-10-14 19:39:35,003 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:39:35,003 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:39:35,003 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-14 19:39:35,003 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-14 19:39:35,004 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1700
[2020-10-14 19:39:35,004 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:39:36,467 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:39:36,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:39:36,472 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:39:36,476 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:39:36,477 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:39:36,477 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:39:36,478 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-14 19:39:36,478 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:39:36,478 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:39:36,483 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:39:36,483 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:39:36,484 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:39:36,484 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-10-14 19:39:36,501 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 19:39:36,503 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:39:36,505 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:39:36,511 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:39:36,512 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-14 19:39:36,512 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:39:36,512 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-14 19:39:36,512 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:39:36,513 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:39:36,513 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:39:36,513 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:39:36,513 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-14 19:39:36,513 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:39:39,203 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 19:39:39,204 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103574113]
[2020-10-14 19:39:39,204 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 19:39:39,204 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-14 19:39:39,205 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026945319]
[2020-10-14 19:39:39,208 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-14 19:39:39,209 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:39:39,209 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-14 19:39:39,209 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-14 19:39:39,209 INFO  L87              Difference]: Start difference. First operand 5801 states and 9374 transitions. Second operand 6 states.
[2020-10-14 19:40:05,976 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 19:40:05,977 INFO  L93              Difference]: Finished difference Result 22189 states and 36830 transitions.
[2020-10-14 19:40:05,977 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-14 19:40:05,978 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 1696
[2020-10-14 19:40:05,982 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 19:40:06,054 INFO  L225             Difference]: With dead ends: 22189
[2020-10-14 19:40:06,054 INFO  L226             Difference]: Without dead ends: 16394
[2020-10-14 19:40:06,072 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2020-10-14 19:40:06,090 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16394 states.
[2020-10-14 19:40:06,416 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16394 to 16341.
[2020-10-14 19:40:06,417 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16341 states.
[2020-10-14 19:40:06,456 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16341 states to 16341 states and 24103 transitions.
[2020-10-14 19:40:06,456 INFO  L78                 Accepts]: Start accepts. Automaton has 16341 states and 24103 transitions. Word has length 1696
[2020-10-14 19:40:06,459 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 19:40:06,459 INFO  L479      AbstractCegarLoop]: Abstraction has 16341 states and 24103 transitions.
[2020-10-14 19:40:06,459 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-14 19:40:06,459 INFO  L276                IsEmpty]: Start isEmpty. Operand 16341 states and 24103 transitions.
[2020-10-14 19:40:06,531 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1765
[2020-10-14 19:40:06,531 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:40:06,532 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:06,533 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-14 19:40:06,533 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:40:06,533 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:40:06,534 INFO  L82        PathProgramCache]: Analyzing trace with hash 2001570150, now seen corresponding path program 1 times
[2020-10-14 19:40:06,534 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:40:06,534 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756411445]
[2020-10-14 19:40:06,535 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:40:06,937 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:40:07,171 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:07,564 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:11,985 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:40:11,985 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1788
[2020-10-14 19:40:11,985 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 19:40:11,985 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5043
[2020-10-14 19:40:11,986 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:40:11,986 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:40:11,986 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-14 19:40:11,986 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 87
[2020-10-14 19:40:11,987 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1700
[2020-10-14 19:40:11,987 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:40:14,442 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:40:14,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:40:14,446 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:14,451 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:40:14,452 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:40:14,452 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:40:14,452 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-14 19:40:14,453 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:40:14,453 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:40:14,454 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:40:14,454 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:40:14,454 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:40:14,455 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:40:14,484 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 19:40:14,509 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:40:14,524 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:14,607 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:40:14,607 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 78
[2020-10-14 19:40:14,607 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:40:14,607 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 97
[2020-10-14 19:40:14,608 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:40:14,608 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:40:14,608 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:40:14,608 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:40:14,608 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 72
[2020-10-14 19:40:14,609 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:40:16,903 INFO  L134       CoverageAnalysis]: Checked inductivity of 74 backedges. 73 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 19:40:16,904 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756411445]
[2020-10-14 19:40:16,904 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 19:40:16,904 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-10-14 19:40:16,904 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082606839]
[2020-10-14 19:40:16,907 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-14 19:40:16,907 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:40:16,907 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-14 19:40:16,907 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-14 19:40:16,908 INFO  L87              Difference]: Start difference. First operand 16341 states and 24103 transitions. Second operand 5 states.
[2020-10-14 19:40:38,728 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 19:40:38,728 INFO  L93              Difference]: Finished difference Result 48575 states and 73505 transitions.
[2020-10-14 19:40:38,729 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 19:40:38,729 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1764
[2020-10-14 19:40:38,737 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 19:40:38,862 INFO  L225             Difference]: With dead ends: 48575
[2020-10-14 19:40:38,862 INFO  L226             Difference]: Without dead ends: 32240
[2020-10-14 19:40:38,910 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-14 19:40:38,949 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32240 states.
[2020-10-14 19:40:39,529 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32240 to 32167.
[2020-10-14 19:40:39,529 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32167 states.
[2020-10-14 19:40:39,588 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32167 states to 32167 states and 44242 transitions.
[2020-10-14 19:40:39,589 INFO  L78                 Accepts]: Start accepts. Automaton has 32167 states and 44242 transitions. Word has length 1764
[2020-10-14 19:40:39,590 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 19:40:39,591 INFO  L479      AbstractCegarLoop]: Abstraction has 32167 states and 44242 transitions.
[2020-10-14 19:40:39,591 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-14 19:40:39,592 INFO  L276                IsEmpty]: Start isEmpty. Operand 32167 states and 44242 transitions.
[2020-10-14 19:40:39,693 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1773
[2020-10-14 19:40:39,693 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:40:39,694 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:39,695 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-14 19:40:39,695 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:40:39,695 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:40:39,696 INFO  L82        PathProgramCache]: Analyzing trace with hash 1182063028, now seen corresponding path program 1 times
[2020-10-14 19:40:39,696 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:40:39,699 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362164174]
[2020-10-14 19:40:39,700 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:40:39,831 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:40:39,871 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:39,962 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:40,207 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:43,688 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:44,945 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:40:44,945 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1796
[2020-10-14 19:40:44,945 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-14 19:40:44,946 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5108
[2020-10-14 19:40:44,946 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:40:44,946 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:40:44,946 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:40:44,946 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 94
[2020-10-14 19:40:44,947 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1701
[2020-10-14 19:40:44,947 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:40:45,914 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:40:45,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:40:45,917 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:45,919 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:40:45,919 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:40:45,920 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:40:45,920 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-14 19:40:45,920 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:40:45,920 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:40:45,920 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:40:45,921 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:40:45,921 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:40:45,921 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:40:45,938 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 19:40:45,968 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:40:45,984 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:46,029 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:46,106 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:40:46,107 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 86
[2020-10-14 19:40:46,107 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 19:40:46,107 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 137
[2020-10-14 19:40:46,108 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:40:46,108 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:40:46,108 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:40:46,108 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:40:46,108 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 79
[2020-10-14 19:40:46,109 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:40:49,091 INFO  L134       CoverageAnalysis]: Checked inductivity of 80 backedges. 79 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 19:40:49,091 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362164174]
[2020-10-14 19:40:49,092 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 19:40:49,092 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-10-14 19:40:49,092 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908689652]
[2020-10-14 19:40:49,094 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-14 19:40:49,095 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:40:49,095 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-14 19:40:49,095 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-14 19:40:49,095 INFO  L87              Difference]: Start difference. First operand 32167 states and 44242 transitions. Second operand 5 states.
[2020-10-14 19:41:09,865 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 19:41:09,865 INFO  L93              Difference]: Finished difference Result 78303 states and 109942 transitions.
[2020-10-14 19:41:09,866 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 19:41:09,866 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1772
[2020-10-14 19:41:09,868 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 19:41:09,965 INFO  L225             Difference]: With dead ends: 78303
[2020-10-14 19:41:09,965 INFO  L226             Difference]: Without dead ends: 32157
[2020-10-14 19:41:10,044 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-14 19:41:10,083 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32157 states.
[2020-10-14 19:41:10,573 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32157 to 32145.
[2020-10-14 19:41:10,573 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32145 states.
[2020-10-14 19:41:10,632 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32145 states to 32145 states and 44194 transitions.
[2020-10-14 19:41:10,634 INFO  L78                 Accepts]: Start accepts. Automaton has 32145 states and 44194 transitions. Word has length 1772
[2020-10-14 19:41:10,634 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 19:41:10,634 INFO  L479      AbstractCegarLoop]: Abstraction has 32145 states and 44194 transitions.
[2020-10-14 19:41:10,634 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-14 19:41:10,635 INFO  L276                IsEmpty]: Start isEmpty. Operand 32145 states and 44194 transitions.
[2020-10-14 19:41:10,709 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1774
[2020-10-14 19:41:10,710 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:41:10,711 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:10,712 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-14 19:41:10,712 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:41:10,712 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:41:10,713 INFO  L82        PathProgramCache]: Analyzing trace with hash -1501923330, now seen corresponding path program 1 times
[2020-10-14 19:41:10,713 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:41:10,713 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684469167]
[2020-10-14 19:41:10,713 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:41:10,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:41:10,845 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:41:10,913 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:41:11,048 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:41:11,506 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:41:15,959 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:41:15,960 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1799
[2020-10-14 19:41:15,960 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-14 19:41:15,960 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5138
[2020-10-14 19:41:15,960 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:41:15,960 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:41:15,961 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 19:41:15,961 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-10-14 19:41:15,961 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-10-14 19:41:15,961 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:41:16,284 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:41:16,285 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:41:16,286 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:41:16,288 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:41:16,288 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:41:16,288 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:41:16,288 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-14 19:41:16,288 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:41:16,288 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:41:16,289 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:41:16,289 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:41:16,289 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:41:16,289 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:41:16,311 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 19:41:16,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:41:16,317 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:41:16,324 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:41:16,324 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 16
[2020-10-14 19:41:16,324 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:41:16,324 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-14 19:41:16,325 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:41:16,325 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:41:16,325 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:41:16,325 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:41:16,325 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-10-14 19:41:16,325 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:41:16,327 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-10-14 19:41:16,337 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:41:16,343 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:41:16,372 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:41:16,432 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:41:16,432 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 72
[2020-10-14 19:41:16,432 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 19:41:16,432 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 94
[2020-10-14 19:41:16,433 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:41:16,433 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:41:16,433 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 19:41:16,433 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 19:41:16,433 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 72
[2020-10-14 19:41:16,433 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:41:17,797 INFO  L134       CoverageAnalysis]: Checked inductivity of 89 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-14 19:41:17,798 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684469167]
[2020-10-14 19:41:17,798 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 19:41:17,798 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-14 19:41:17,798 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108408492]
[2020-10-14 19:41:17,800 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 19:41:17,800 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:41:17,800 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 19:41:17,800 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 19:41:17,800 INFO  L87              Difference]: Start difference. First operand 32145 states and 44194 transitions. Second operand 7 states.
[2020-10-14 19:41:51,887 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 19:41:51,888 INFO  L93              Difference]: Finished difference Result 84996 states and 128189 transitions.
[2020-10-14 19:41:51,891 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 19:41:51,891 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1773
[2020-10-14 19:41:51,891 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 19:41:52,104 INFO  L225             Difference]: With dead ends: 84996
[2020-10-14 19:41:52,104 INFO  L226             Difference]: Without dead ends: 52857
[2020-10-14 19:41:52,173 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-14 19:41:52,230 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 52857 states.
[2020-10-14 19:41:53,225 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 52857 to 52503.
[2020-10-14 19:41:53,225 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 52503 states.
[2020-10-14 19:41:53,365 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 52503 states to 52503 states and 74010 transitions.
[2020-10-14 19:41:53,365 INFO  L78                 Accepts]: Start accepts. Automaton has 52503 states and 74010 transitions. Word has length 1773
[2020-10-14 19:41:53,366 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 19:41:53,366 INFO  L479      AbstractCegarLoop]: Abstraction has 52503 states and 74010 transitions.
[2020-10-14 19:41:53,367 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 19:41:53,367 INFO  L276                IsEmpty]: Start isEmpty. Operand 52503 states and 74010 transitions.
[2020-10-14 19:41:53,541 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1832
[2020-10-14 19:41:53,542 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:41:53,543 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:53,543 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-14 19:41:53,543 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:41:53,544 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:41:53,544 INFO  L82        PathProgramCache]: Analyzing trace with hash -1754535255, now seen corresponding path program 1 times
[2020-10-14 19:41:53,545 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:41:53,545 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191535238]
[2020-10-14 19:41:53,545 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:41:53,655 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:41:53,679 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:41:53,748 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:41:53,937 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:41:54,472 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:41:58,803 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:41:58,804 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1859
[2020-10-14 19:41:58,804 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-14 19:41:58,804 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5143
[2020-10-14 19:41:58,804 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:41:58,805 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:41:58,805 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 25
[2020-10-14 19:41:58,805 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 156
[2020-10-14 19:41:58,805 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 773
[2020-10-14 19:41:58,806 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:42:02,317 WARN  L193               SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 34
[2020-10-14 19:42:02,458 WARN  L193               SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32
[2020-10-14 19:42:02,637 WARN  L193               SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 34
[2020-10-14 19:42:02,857 WARN  L193               SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44
[2020-10-14 19:42:03,108 WARN  L193               SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44
[2020-10-14 19:42:03,405 WARN  L193               SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 46
[2020-10-14 19:42:03,607 WARN  L193               SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 32
[2020-10-14 19:42:03,963 WARN  L193               SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27
[2020-10-14 19:42:04,115 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:42:04,121 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:42:04,122 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:42:04,124 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:42:04,124 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:42:04,124 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:42:04,124 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-14 19:42:04,124 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:42:04,124 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:42:04,125 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:42:04,125 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:42:04,125 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:42:04,125 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:42:04,160 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 19:42:04,161 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:42:04,162 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:42:04,164 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:42:04,164 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-14 19:42:04,164 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:42:04,164 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-14 19:42:04,164 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:42:04,164 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:42:04,165 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:42:04,165 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:42:04,165 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:42:04,165 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:42:04,166 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-14 19:42:04,167 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:42:04,168 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:42:04,173 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:42:04,174 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-14 19:42:04,174 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:42:04,174 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-14 19:42:04,174 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:42:04,174 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:42:04,174 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:42:04,174 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:42:04,174 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:42:04,175 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:42:04,178 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-10-14 19:42:04,191 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:42:04,205 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:42:04,303 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:42:04,303 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 110
[2020-10-14 19:42:04,303 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:42:04,304 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 111
[2020-10-14 19:42:04,304 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:42:04,304 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:42:04,304 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-10-14 19:42:04,304 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:42:04,305 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 103
[2020-10-14 19:42:04,305 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:42:19,017 INFO  L134       CoverageAnalysis]: Checked inductivity of 173 backedges. 134 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2020-10-14 19:42:19,018 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191535238]
[2020-10-14 19:42:19,018 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 19:42:19,018 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2020-10-14 19:42:19,019 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835256885]
[2020-10-14 19:42:19,021 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-14 19:42:19,022 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:42:19,022 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-14 19:42:19,022 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380
[2020-10-14 19:42:19,022 INFO  L87              Difference]: Start difference. First operand 52503 states and 74010 transitions. Second operand 20 states.