/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label31.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-14 01:20:18,010 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-14 01:20:18,014 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-14 01:20:18,061 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-14 01:20:18,061 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-14 01:20:18,070 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-14 01:20:18,073 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-14 01:20:18,077 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-14 01:20:18,079 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-14 01:20:18,083 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-14 01:20:18,084 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-14 01:20:18,085 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-14 01:20:18,085 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-14 01:20:18,088 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-14 01:20:18,091 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-14 01:20:18,093 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-14 01:20:18,095 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-14 01:20:18,096 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-14 01:20:18,098 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-14 01:20:18,107 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-14 01:20:18,110 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-14 01:20:18,111 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-14 01:20:18,112 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-14 01:20:18,113 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-14 01:20:18,126 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-14 01:20:18,127 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-14 01:20:18,130 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-14 01:20:18,131 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-14 01:20:18,132 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-14 01:20:18,135 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-14 01:20:18,135 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-14 01:20:18,136 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-14 01:20:18,137 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-14 01:20:18,141 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-14 01:20:18,142 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-14 01:20:18,145 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-14 01:20:18,146 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-14 01:20:18,146 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-14 01:20:18,147 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-14 01:20:18,147 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-14 01:20:18,150 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-14 01:20:18,151 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-14 01:20:18,192 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-14 01:20:18,192 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-14 01:20:18,194 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-14 01:20:18,194 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-14 01:20:18,194 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-14 01:20:18,194 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-14 01:20:18,195 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-14 01:20:18,195 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-14 01:20:18,195 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-14 01:20:18,195 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-14 01:20:18,196 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-14 01:20:18,197 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-14 01:20:18,197 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-14 01:20:18,197 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-14 01:20:18,198 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-14 01:20:18,198 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-14 01:20:18,198 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-14 01:20:18,198 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-14 01:20:18,198 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-14 01:20:18,199 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-14 01:20:18,199 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-14 01:20:18,199 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:20:18,200 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-14 01:20:18,200 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-14 01:20:18,200 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-14 01:20:18,200 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-14 01:20:18,200 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-14 01:20:18,200 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-14 01:20:18,201 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-14 01:20:18,201 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
[2020-10-14 01:20:18,530 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-14 01:20:18,544 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-14 01:20:18,548 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-14 01:20:18,549 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-14 01:20:18,550 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-14 01:20:18,551 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label31.c
[2020-10-14 01:20:18,616 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/846565a0b/97939801e52042c48de6da0bcbb97cf6/FLAG13909056c
[2020-10-14 01:20:19,587 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-14 01:20:19,587 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label31.c
[2020-10-14 01:20:19,644 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/846565a0b/97939801e52042c48de6da0bcbb97cf6/FLAG13909056c
[2020-10-14 01:20:19,902 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/846565a0b/97939801e52042c48de6da0bcbb97cf6
[2020-10-14 01:20:19,911 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-14 01:20:19,913 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-14 01:20:19,914 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-14 01:20:19,915 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-14 01:20:19,918 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-14 01:20:19,920 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:20:19" (1/1) ...
[2020-10-14 01:20:19,923 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56cf3411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:19, skipping insertion in model container
[2020-10-14 01:20:19,923 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:20:19" (1/1) ...
[2020-10-14 01:20:19,932 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-14 01:20:20,190 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-14 01:20:22,763 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:20:22,775 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-14 01:20:24,101 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:20:24,216 INFO  L208         MainTranslator]: Completed translation
[2020-10-14 01:20:24,218 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:24 WrapperNode
[2020-10-14 01:20:24,218 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-14 01:20:24,220 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-14 01:20:24,220 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-14 01:20:24,220 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-14 01:20:24,236 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:24" (1/1) ...
[2020-10-14 01:20:24,238 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:24" (1/1) ...
[2020-10-14 01:20:24,333 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:24" (1/1) ...
[2020-10-14 01:20:24,333 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:24" (1/1) ...
[2020-10-14 01:20:24,530 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:24" (1/1) ...
[2020-10-14 01:20:24,582 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:24" (1/1) ...
[2020-10-14 01:20:24,665 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:24" (1/1) ...
[2020-10-14 01:20:24,904 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-14 01:20:24,905 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-14 01:20:24,905 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-14 01:20:24,905 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-14 01:20:24,906 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:24" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:20:24,988 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-14 01:20:24,988 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-14 01:20:24,989 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-14 01:20:24,989 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-14 01:20:24,989 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-14 01:20:24,989 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-14 01:20:24,989 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-14 01:20:24,992 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-14 01:20:24,992 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-14 01:20:24,992 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-14 01:20:24,993 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-14 01:20:24,993 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-14 01:20:24,993 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-14 01:20:24,993 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-14 01:20:24,993 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-14 01:20:24,994 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-14 01:20:24,995 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-14 01:20:24,995 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-14 01:20:24,995 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-14 01:20:24,995 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-14 01:20:24,996 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-14 01:20:24,996 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-14 01:20:24,996 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-14 01:20:24,996 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-14 01:20:24,997 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-14 01:20:33,559 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-14 01:20:33,560 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-14 01:20:33,578 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:20:33 BoogieIcfgContainer
[2020-10-14 01:20:33,578 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-14 01:20:33,580 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-14 01:20:33,580 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-14 01:20:33,583 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-14 01:20:33,583 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:20:19" (1/3) ...
[2020-10-14 01:20:33,584 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e360183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:20:33, skipping insertion in model container
[2020-10-14 01:20:33,584 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:24" (2/3) ...
[2020-10-14 01:20:33,585 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e360183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:20:33, skipping insertion in model container
[2020-10-14 01:20:33,585 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:20:33" (3/3) ...
[2020-10-14 01:20:33,587 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label31.c
[2020-10-14 01:20:33,597 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-14 01:20:33,608 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-14 01:20:33,623 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-14 01:20:33,659 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-14 01:20:33,659 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-14 01:20:33,659 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-14 01:20:33,659 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-14 01:20:33,660 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-14 01:20:33,660 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-14 01:20:33,660 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-14 01:20:33,660 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-14 01:20:33,710 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-14 01:20:33,814 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1687
[2020-10-14 01:20:33,814 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:20:33,817 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:20:33,818 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:20:33,824 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:20:33,826 INFO  L82        PathProgramCache]: Analyzing trace with hash 1676017825, now seen corresponding path program 1 times
[2020-10-14 01:20:33,835 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:20:33,836 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99631432]
[2020-10-14 01:20:33,837 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:20:34,844 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:35,643 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:39,999 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:40,000 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1708
[2020-10-14 01:20:40,000 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:20:40,000 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5147
[2020-10-14 01:20:40,003 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:40,003 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:40,004 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-14 01:20:40,004 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:20:40,004 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1702
[2020-10-14 01:20:40,004 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 01:20:41,702 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:20:41,707 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:41,710 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:41,716 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:41,717 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:20:41,717 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:20:41,717 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-14 01:20:41,717 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:41,718 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:41,718 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:20:41,718 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:20:41,718 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:20:41,719 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:20:43,988 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:20:43,989 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99631432]
[2020-10-14 01:20:43,991 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:20:43,991 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-14 01:20:43,992 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309023550]
[2020-10-14 01:20:44,001 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-14 01:20:44,001 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:20:44,012 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-14 01:20:44,012 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-14 01:20:44,014 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 4 states.
[2020-10-14 01:21:00,893 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:21:00,894 INFO  L93              Difference]: Finished difference Result 6310 states and 11850 transitions.
[2020-10-14 01:21:00,894 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 01:21:00,896 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1686
[2020-10-14 01:21:00,907 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:21:00,956 INFO  L225             Difference]: With dead ends: 6310
[2020-10-14 01:21:00,956 INFO  L226             Difference]: Without dead ends: 4024
[2020-10-14 01:21:00,969 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:21:00,995 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4024 states.
[2020-10-14 01:21:01,183 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3997.
[2020-10-14 01:21:01,185 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3997 states.
[2020-10-14 01:21:01,209 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6427 transitions.
[2020-10-14 01:21:01,211 INFO  L78                 Accepts]: Start accepts. Automaton has 3997 states and 6427 transitions. Word has length 1686
[2020-10-14 01:21:01,218 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:21:01,218 INFO  L479      AbstractCegarLoop]: Abstraction has 3997 states and 6427 transitions.
[2020-10-14 01:21:01,218 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-14 01:21:01,219 INFO  L276                IsEmpty]: Start isEmpty. Operand 3997 states and 6427 transitions.
[2020-10-14 01:21:01,331 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1696
[2020-10-14 01:21:01,331 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:21:01,332 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:21:01,333 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-14 01:21:01,333 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:21:01,334 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:21:01,335 INFO  L82        PathProgramCache]: Analyzing trace with hash -357821546, now seen corresponding path program 1 times
[2020-10-14 01:21:01,336 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:21:01,336 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231690058]
[2020-10-14 01:21:01,337 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:21:01,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:01,569 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:03,764 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:06,564 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:06,564 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1719
[2020-10-14 01:21:06,564 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:21:06,564 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5023
[2020-10-14 01:21:06,565 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:06,566 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:06,566 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:21:06,566 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:21:06,566 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-14 01:21:06,567 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:08,073 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:21:08,079 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:08,081 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:08,089 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:08,089 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:21:08,089 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:08,090 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-14 01:21:08,090 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:08,091 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:08,100 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:21:08,100 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:21:08,100 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:21:08,101 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 10
[2020-10-14 01:21:08,133 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:21:08,137 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:08,140 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:08,175 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:08,176 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-14 01:21:08,176 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:08,176 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 37
[2020-10-14 01:21:08,177 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:08,177 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:08,177 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:21:08,178 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:21:08,178 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-14 01:21:08,179 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:09,890 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:21:09,891 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231690058]
[2020-10-14 01:21:09,891 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:21:09,891 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:21:09,892 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689821674]
[2020-10-14 01:21:09,896 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:21:09,896 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:21:09,896 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:21:09,897 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:21:09,897 INFO  L87              Difference]: Start difference. First operand 3997 states and 6427 transitions. Second operand 7 states.
[2020-10-14 01:21:32,445 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:21:32,445 INFO  L93              Difference]: Finished difference Result 11927 states and 19333 transitions.
[2020-10-14 01:21:32,446 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:21:32,446 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1695
[2020-10-14 01:21:32,447 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:21:32,505 INFO  L225             Difference]: With dead ends: 11927
[2020-10-14 01:21:32,506 INFO  L226             Difference]: Without dead ends: 7936
[2020-10-14 01:21:32,518 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:21:32,529 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7936 states.
[2020-10-14 01:21:32,715 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7936 to 7713.
[2020-10-14 01:21:32,716 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7713 states.
[2020-10-14 01:21:32,741 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 11559 transitions.
[2020-10-14 01:21:32,742 INFO  L78                 Accepts]: Start accepts. Automaton has 7713 states and 11559 transitions. Word has length 1695
[2020-10-14 01:21:32,742 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:21:32,742 INFO  L479      AbstractCegarLoop]: Abstraction has 7713 states and 11559 transitions.
[2020-10-14 01:21:32,742 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:21:32,743 INFO  L276                IsEmpty]: Start isEmpty. Operand 7713 states and 11559 transitions.
[2020-10-14 01:21:32,785 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1710
[2020-10-14 01:21:32,785 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:21:32,786 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:21:32,787 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-14 01:21:32,787 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:21:32,787 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:21:32,788 INFO  L82        PathProgramCache]: Analyzing trace with hash 366018094, now seen corresponding path program 1 times
[2020-10-14 01:21:32,788 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:21:32,788 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434949159]
[2020-10-14 01:21:32,789 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:21:32,966 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:33,083 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:33,723 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:34,250 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:38,073 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:38,074 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1735
[2020-10-14 01:21:38,074 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:21:38,074 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5104
[2020-10-14 01:21:38,075 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:38,075 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:38,076 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:21:38,076 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-10-14 01:21:38,076 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-14 01:21:38,077 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:38,484 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:21:38,487 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:38,488 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:38,491 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:38,492 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:21:38,492 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:38,493 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-14 01:21:38,493 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:38,493 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:38,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:21:38,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:21:38,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:21:38,495 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:38,524 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:21:38,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:38,530 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:38,545 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:38,545 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-14 01:21:38,546 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:38,546 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-10-14 01:21:38,546 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:38,547 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:38,547 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:21:38,547 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:21:38,547 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-14 01:21:38,548 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:38,558 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-14 01:21:38,561 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:38,564 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:38,585 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:38,585 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-14 01:21:38,585 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:38,586 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-10-14 01:21:38,586 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:38,587 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:38,587 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:21:38,587 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:21:38,588 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-10-14 01:21:38,588 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:39,716 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-14 01:21:39,716 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434949159]
[2020-10-14 01:21:39,717 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:21:39,717 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-14 01:21:39,717 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855482284]
[2020-10-14 01:21:39,720 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-14 01:21:39,720 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:21:39,720 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-14 01:21:39,720 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-14 01:21:39,721 INFO  L87              Difference]: Start difference. First operand 7713 states and 11559 transitions. Second operand 8 states.
[2020-10-14 01:22:11,810 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:22:11,811 INFO  L93              Difference]: Finished difference Result 19521 states and 30335 transitions.
[2020-10-14 01:22:11,812 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-14 01:22:11,812 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1709
[2020-10-14 01:22:11,812 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:22:11,879 INFO  L225             Difference]: With dead ends: 19521
[2020-10-14 01:22:11,880 INFO  L226             Difference]: Without dead ends: 11814
[2020-10-14 01:22:11,900 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-14 01:22:11,916 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11814 states.
[2020-10-14 01:22:12,156 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11814 to 11664.
[2020-10-14 01:22:12,157 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11664 states.
[2020-10-14 01:22:12,193 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11664 states to 11664 states and 16685 transitions.
[2020-10-14 01:22:12,193 INFO  L78                 Accepts]: Start accepts. Automaton has 11664 states and 16685 transitions. Word has length 1709
[2020-10-14 01:22:12,194 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:22:12,194 INFO  L479      AbstractCegarLoop]: Abstraction has 11664 states and 16685 transitions.
[2020-10-14 01:22:12,195 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-14 01:22:12,195 INFO  L276                IsEmpty]: Start isEmpty. Operand 11664 states and 16685 transitions.
[2020-10-14 01:22:12,258 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1727
[2020-10-14 01:22:12,259 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:22:12,261 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:22:12,262 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-14 01:22:12,262 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:22:12,262 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:22:12,263 INFO  L82        PathProgramCache]: Analyzing trace with hash -411234320, now seen corresponding path program 1 times
[2020-10-14 01:22:12,263 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:22:12,264 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814361204]
[2020-10-14 01:22:12,264 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:22:12,377 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:12,406 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:12,733 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:17,400 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:17,400 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1750
[2020-10-14 01:22:17,400 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:22:17,401 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5019
[2020-10-14 01:22:17,403 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:17,403 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:17,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:22:17,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:22:17,404 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-10-14 01:22:17,404 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:22:17,716 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:22:17,719 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:17,721 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:17,726 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:17,726 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:22:17,726 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:22:17,727 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-14 01:22:17,727 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:17,727 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:17,727 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:22:17,727 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:22:17,727 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:22:17,727 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:22:17,745 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:22:17,753 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:17,759 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:17,797 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:17,798 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-14 01:22:17,798 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:22:17,798 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 43
[2020-10-14 01:22:17,798 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:17,798 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:17,798 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:22:17,799 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:22:17,799 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-10-14 01:22:17,799 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:22:18,912 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:22:18,912 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814361204]
[2020-10-14 01:22:18,912 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:22:18,913 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:22:18,913 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636559068]
[2020-10-14 01:22:18,915 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:22:18,915 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:22:18,916 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:22:18,916 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:22:18,916 INFO  L87              Difference]: Start difference. First operand 11664 states and 16685 transitions. Second operand 7 states.
[2020-10-14 01:22:43,708 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:22:43,708 INFO  L93              Difference]: Finished difference Result 35984 states and 55799 transitions.
[2020-10-14 01:22:43,709 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:22:43,709 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1726
[2020-10-14 01:22:43,710 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:22:43,808 INFO  L225             Difference]: With dead ends: 35984
[2020-10-14 01:22:43,809 INFO  L226             Difference]: Without dead ends: 24326
[2020-10-14 01:22:43,844 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:22:43,877 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24326 states.
[2020-10-14 01:22:44,483 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24326 to 23590.
[2020-10-14 01:22:44,483 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 23590 states.
[2020-10-14 01:22:44,534 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23590 states to 23590 states and 31838 transitions.
[2020-10-14 01:22:44,535 INFO  L78                 Accepts]: Start accepts. Automaton has 23590 states and 31838 transitions. Word has length 1726
[2020-10-14 01:22:44,536 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:22:44,536 INFO  L479      AbstractCegarLoop]: Abstraction has 23590 states and 31838 transitions.
[2020-10-14 01:22:44,536 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:22:44,536 INFO  L276                IsEmpty]: Start isEmpty. Operand 23590 states and 31838 transitions.
[2020-10-14 01:22:44,657 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1728
[2020-10-14 01:22:44,657 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:22:44,658 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:22:44,659 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-14 01:22:44,659 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:22:44,659 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:22:44,660 INFO  L82        PathProgramCache]: Analyzing trace with hash 733344296, now seen corresponding path program 1 times
[2020-10-14 01:22:44,660 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:22:44,661 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211881783]
[2020-10-14 01:22:44,661 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:22:45,113 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:45,390 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:46,957 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:50,156 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:50,157 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1751
[2020-10-14 01:22:50,157 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:22:50,157 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5039
[2020-10-14 01:22:50,157 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:50,157 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:50,157 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:22:50,158 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:22:50,158 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-14 01:22:50,158 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:22:50,610 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:22:50,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:50,613 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:50,617 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:50,617 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:22:50,617 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:22:50,618 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-14 01:22:50,618 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:50,618 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:50,618 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:22:50,618 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:22:50,619 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:22:50,619 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:22:50,636 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:22:50,644 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:50,650 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:50,681 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:50,682 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 42
[2020-10-14 01:22:50,682 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:22:50,682 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 36
[2020-10-14 01:22:50,682 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:50,682 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:50,682 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:22:50,682 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:22:50,683 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-10-14 01:22:50,683 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:22:51,740 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:22:51,741 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211881783]
[2020-10-14 01:22:51,741 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:22:51,741 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:22:51,742 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634370822]
[2020-10-14 01:22:51,743 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:22:51,743 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:22:51,743 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:22:51,744 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:22:51,744 INFO  L87              Difference]: Start difference. First operand 23590 states and 31838 transitions. Second operand 7 states.
[2020-10-14 01:23:14,608 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:23:14,609 INFO  L93              Difference]: Finished difference Result 70876 states and 103115 transitions.
[2020-10-14 01:23:14,610 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-14 01:23:14,610 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1727
[2020-10-14 01:23:14,610 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:23:14,800 INFO  L225             Difference]: With dead ends: 70876
[2020-10-14 01:23:14,800 INFO  L226             Difference]: Without dead ends: 47292
[2020-10-14 01:23:14,880 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:23:14,934 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47292 states.
[2020-10-14 01:23:17,257 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47292 to 46856.
[2020-10-14 01:23:17,258 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 46856 states.
[2020-10-14 01:23:17,367 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46856 states to 46856 states and 63485 transitions.
[2020-10-14 01:23:17,367 INFO  L78                 Accepts]: Start accepts. Automaton has 46856 states and 63485 transitions. Word has length 1727
[2020-10-14 01:23:17,368 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:23:17,368 INFO  L479      AbstractCegarLoop]: Abstraction has 46856 states and 63485 transitions.
[2020-10-14 01:23:17,368 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:23:17,368 INFO  L276                IsEmpty]: Start isEmpty. Operand 46856 states and 63485 transitions.
[2020-10-14 01:23:17,512 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1779
[2020-10-14 01:23:17,513 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:23:17,514 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:23:17,514 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-14 01:23:17,515 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:23:17,515 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:23:17,516 INFO  L82        PathProgramCache]: Analyzing trace with hash -85246204, now seen corresponding path program 1 times
[2020-10-14 01:23:17,516 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:23:17,517 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301856663]
[2020-10-14 01:23:17,517 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:23:17,661 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:17,720 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:17,800 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:18,031 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:19,424 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:22,745 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:22,745 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1806
[2020-10-14 01:23:22,745 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-14 01:23:22,746 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5078
[2020-10-14 01:23:22,746 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:22,746 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:22,746 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:23:22,746 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 32
[2020-10-14 01:23:22,747 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-14 01:23:22,747 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:23:23,127 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:23:23,129 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:23,131 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:23,132 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:23,133 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:23:23,133 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:23,133 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-14 01:23:23,133 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:23,133 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:23,133 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:23:23,134 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:23:23,134 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:23:23,134 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:23:23,155 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:23:23,160 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:23,162 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:23,174 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:23,174 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-14 01:23:23,174 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:23,174 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-10-14 01:23:23,175 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:23,175 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:23,175 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:23:23,175 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:23:23,175 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-14 01:23:23,175 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:23:23,181 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-10-14 01:23:23,190 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:23,196 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:23,236 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:23,236 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-10-14 01:23:23,236 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:23,236 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 45
[2020-10-14 01:23:23,236 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:23,237 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:23,237 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:23:23,237 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:23:23,237 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 45
[2020-10-14 01:23:23,237 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:23:23,333 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2020-10-14 01:23:23,339 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:23,343 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:23,360 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:23,360 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-14 01:23:23,361 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:23,361 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-14 01:23:23,361 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:23,361 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:23,362 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:23:23,362 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-10-14 01:23:23,362 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:23:23,363 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:23:24,838 INFO  L134       CoverageAnalysis]: Checked inductivity of 149 backedges. 104 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2020-10-14 01:23:24,839 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301856663]
[2020-10-14 01:23:24,839 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:23:24,839 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-14 01:23:24,839 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348659895]
[2020-10-14 01:23:24,843 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:23:24,843 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:23:24,843 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:23:24,843 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:23:24,843 INFO  L87              Difference]: Start difference. First operand 46856 states and 63485 transitions. Second operand 7 states.
[2020-10-14 01:23:50,547 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:23:50,548 INFO  L93              Difference]: Finished difference Result 132326 states and 190349 transitions.
[2020-10-14 01:23:50,549 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-14 01:23:50,549 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1778
[2020-10-14 01:23:50,549 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:23:50,843 INFO  L225             Difference]: With dead ends: 132326
[2020-10-14 01:23:50,843 INFO  L226             Difference]: Without dead ends: 85476
[2020-10-14 01:23:50,952 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-14 01:23:51,037 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 85476 states.
[2020-10-14 01:23:52,417 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 85476 to 85292.
[2020-10-14 01:23:52,417 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 85292 states.
[2020-10-14 01:23:52,708 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85292 states to 85292 states and 116853 transitions.
[2020-10-14 01:23:52,711 INFO  L78                 Accepts]: Start accepts. Automaton has 85292 states and 116853 transitions. Word has length 1778
[2020-10-14 01:23:52,712 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:23:52,712 INFO  L479      AbstractCegarLoop]: Abstraction has 85292 states and 116853 transitions.
[2020-10-14 01:23:52,713 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:23:52,713 INFO  L276                IsEmpty]: Start isEmpty. Operand 85292 states and 116853 transitions.
[2020-10-14 01:23:52,964 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1801
[2020-10-14 01:23:52,964 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:23:52,967 INFO  L422         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2020-10-14 01:23:52,967 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-10-14 01:23:52,967 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:23:52,968 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:23:52,969 INFO  L82        PathProgramCache]: Analyzing trace with hash -839690221, now seen corresponding path program 1 times
[2020-10-14 01:23:52,969 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:23:52,969 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918271692]
[2020-10-14 01:23:52,969 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:23:53,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:53,224 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:53,350 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:53,639 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:53,968 FATAL L256   erpolLogProxyWrapper]: Now shrinking...