/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=NARROWEST --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_label23.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-13 06:50:40,810 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-13 06:50:40,812 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-13 06:50:40,837 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-13 06:50:40,838 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-13 06:50:40,839 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-13 06:50:40,840 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-13 06:50:40,842 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-13 06:50:40,844 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-13 06:50:40,845 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-13 06:50:40,846 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
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[2020-10-13 06:50:40,848 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-13 06:50:40,849 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-13 06:50:40,850 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-13 06:50:40,851 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-13 06:50:40,852 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-13 06:50:40,852 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-13 06:50:40,854 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-13 06:50:40,856 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-13 06:50:40,858 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-13 06:50:40,859 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-13 06:50:40,860 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-13 06:50:40,861 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-13 06:50:40,866 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-13 06:50:40,866 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-13 06:50:40,866 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-13 06:50:40,871 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-13 06:50:40,871 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-13 06:50:40,874 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-13 06:50:40,874 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-13 06:50:40,875 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-13 06:50:40,875 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-13 06:50:40,876 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-13 06:50:40,877 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-13 06:50:40,877 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-13 06:50:40,878 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-13 06:50:40,878 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-13 06:50:40,878 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-10-13 06:50:40,880 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-13 06:50:40,881 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
[2020-10-13 06:50:40,905 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-13 06:50:40,905 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-13 06:50:40,906 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-13 06:50:40,906 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-13 06:50:40,907 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-13 06:50:40,907 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-13 06:50:40,907 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-13 06:50:40,907 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-13 06:50:40,907 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-13 06:50:40,908 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-13 06:50:40,908 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-13 06:50:40,908 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-13 06:50:40,908 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-13 06:50:40,908 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-13 06:50:40,909 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-13 06:50:40,909 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-13 06:50:40,909 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-13 06:50:40,909 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-13 06:50:40,910 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-13 06:50:40,910 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-13 06:50:40,910 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-13 06:50:40,910 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-13 06:50:40,910 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-13 06:50:40,911 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-13 06:50:40,911 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-13 06:50:40,911 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-13 06:50:40,911 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-13 06:50:40,911 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-13 06:50:40,912 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-13 06:50:40,912 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true;
[2020-10-13 06:50:41,214 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-13 06:50:41,227 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-13 06:50:41,231 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-13 06:50:41,233 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-13 06:50:41,233 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-13 06:50:41,234 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label23.c
[2020-10-13 06:50:41,309 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eca4dbdd0/203df398fd7640478cdae7d86ca0e5af/FLAG6b161bfad
[2020-10-13 06:50:42,315 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-13 06:50:42,315 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label23.c
[2020-10-13 06:50:42,365 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eca4dbdd0/203df398fd7640478cdae7d86ca0e5af/FLAG6b161bfad
[2020-10-13 06:50:42,655 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eca4dbdd0/203df398fd7640478cdae7d86ca0e5af
[2020-10-13 06:50:42,666 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-13 06:50:42,668 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-13 06:50:42,670 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-13 06:50:42,670 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-13 06:50:42,674 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-13 06:50:42,675 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:50:42" (1/1) ...
[2020-10-13 06:50:42,678 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387f035d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:42, skipping insertion in model container
[2020-10-13 06:50:42,679 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:50:42" (1/1) ...
[2020-10-13 06:50:42,687 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-13 06:50:42,970 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-13 06:50:45,704 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-13 06:50:45,714 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-13 06:50:46,904 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-13 06:50:46,971 INFO  L208         MainTranslator]: Completed translation
[2020-10-13 06:50:46,972 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:46 WrapperNode
[2020-10-13 06:50:46,972 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-13 06:50:46,973 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-13 06:50:46,973 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-13 06:50:46,973 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-13 06:50:46,987 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:46" (1/1) ...
[2020-10-13 06:50:46,987 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:46" (1/1) ...
[2020-10-13 06:50:47,076 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:46" (1/1) ...
[2020-10-13 06:50:47,077 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:46" (1/1) ...
[2020-10-13 06:50:47,270 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:46" (1/1) ...
[2020-10-13 06:50:47,337 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:46" (1/1) ...
[2020-10-13 06:50:47,414 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:46" (1/1) ...
[2020-10-13 06:50:47,496 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-13 06:50:47,497 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-13 06:50:47,497 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-13 06:50:47,497 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-13 06:50:47,499 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:46" (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
[2020-10-13 06:50:47,586 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-13 06:50:47,586 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-13 06:50:47,586 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-13 06:50:47,587 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-13 06:50:47,587 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-13 06:50:47,587 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-13 06:50:47,587 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-13 06:50:47,588 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-13 06:50:47,589 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-13 06:50:47,589 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-13 06:50:47,589 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-13 06:50:47,589 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-13 06:50:47,590 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-13 06:50:47,590 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-13 06:50:47,590 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-13 06:50:47,591 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-13 06:50:47,591 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-13 06:50:47,592 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-13 06:50:47,592 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-13 06:50:47,592 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-13 06:50:47,592 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-13 06:50:47,593 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-13 06:50:47,593 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-13 06:50:47,593 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-13 06:50:47,593 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-13 06:50:56,320 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-13 06:50:56,321 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-13 06:50:56,339 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:50:56 BoogieIcfgContainer
[2020-10-13 06:50:56,340 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-13 06:50:56,341 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-13 06:50:56,341 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-13 06:50:56,345 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-13 06:50:56,345 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:50:42" (1/3) ...
[2020-10-13 06:50:56,346 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191c1dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:50:56, skipping insertion in model container
[2020-10-13 06:50:56,346 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:46" (2/3) ...
[2020-10-13 06:50:56,347 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191c1dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:50:56, skipping insertion in model container
[2020-10-13 06:50:56,347 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:50:56" (3/3) ...
[2020-10-13 06:50:56,349 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label23.c
[2020-10-13 06:50:56,360 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-13 06:50:56,371 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-13 06:50:56,386 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-13 06:50:56,480 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-13 06:50:56,481 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-13 06:50:56,481 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-13 06:50:56,481 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-13 06:50:56,481 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-13 06:50:56,481 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-13 06:50:56,481 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-13 06:50:56,482 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-13 06:50:56,544 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-13 06:50:56,685 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1690
[2020-10-13 06:50:56,685 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 06:50:56,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-13 06:50:56,689 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 06:50:56,695 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 06:50:56,697 INFO  L82        PathProgramCache]: Analyzing trace with hash 1256896792, now seen corresponding path program 1 times
[2020-10-13 06:50:56,705 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 06:50:56,706 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672476129]
[2020-10-13 06:50:56,707 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 06:50:57,576 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:50:58,126 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:51:02,960 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:51:02,960 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1711
[2020-10-13 06:51:02,961 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:51:02,961 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5373
[2020-10-13 06:51:02,963 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:51:02,963 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-13 06:51:02,964 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-13 06:51:02,964 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1705
[2020-10-13 06:51:02,964 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-13 06:51:04,383 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 06:51:04,388 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:51:04,391 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:51:04,398 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:51:04,399 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 06:51:04,399 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:51:04,399 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-13 06:51:04,400 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:51:04,400 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:51:04,400 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:51:04,400 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-13 06:51:04,400 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:51:07,463 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-13 06:51:07,464 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672476129]
[2020-10-13 06:51:07,465 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-13 06:51:07,466 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-13 06:51:07,467 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074952082]
[2020-10-13 06:51:07,475 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-13 06:51:07,476 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 06:51:07,490 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-13 06:51:07,491 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-13 06:51:07,493 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 5 states.
[2020-10-13 06:51:33,992 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 06:51:33,993 INFO  L93              Difference]: Finished difference Result 8234 states and 15615 transitions.
[2020-10-13 06:51:33,994 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-13 06:51:33,995 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1689
[2020-10-13 06:51:34,004 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 06:51:34,066 INFO  L225             Difference]: With dead ends: 8234
[2020-10-13 06:51:34,066 INFO  L226             Difference]: Without dead ends: 5944
[2020-10-13 06:51:34,079 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-13 06:51:34,111 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5944 states.
[2020-10-13 06:51:34,301 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 5825.
[2020-10-13 06:51:34,302 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5825 states.
[2020-10-13 06:51:34,332 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5825 states to 5825 states and 10164 transitions.
[2020-10-13 06:51:34,334 INFO  L78                 Accepts]: Start accepts. Automaton has 5825 states and 10164 transitions. Word has length 1689
[2020-10-13 06:51:34,338 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 06:51:34,338 INFO  L479      AbstractCegarLoop]: Abstraction has 5825 states and 10164 transitions.
[2020-10-13 06:51:34,338 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-13 06:51:34,339 INFO  L276                IsEmpty]: Start isEmpty. Operand 5825 states and 10164 transitions.
[2020-10-13 06:51:34,454 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1716
[2020-10-13 06:51:34,454 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 06:51:34,455 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-13 06:51:34,456 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-13 06:51:34,456 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 06:51:34,457 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 06:51:34,458 INFO  L82        PathProgramCache]: Analyzing trace with hash 596463325, now seen corresponding path program 1 times
[2020-10-13 06:51:34,458 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 06:51:34,459 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835192387]
[2020-10-13 06:51:34,460 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 06:51:34,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:51:34,703 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:51:35,159 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:51:39,693 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:51:39,693 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1739
[2020-10-13 06:51:39,693 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-13 06:51:39,694 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5035
[2020-10-13 06:51:39,694 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:51:39,695 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-13 06:51:39,695 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-13 06:51:39,695 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 30
[2020-10-13 06:51:39,695 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-13 06:51:41,540 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 06:51:41,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:51:41,546 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:51:41,553 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:51:41,554 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 06:51:41,554 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:51:41,555 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-13 06:51:41,555 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:51:41,555 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:51:41,556 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:51:41,556 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-13 06:51:41,556 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-13 06:51:41,584 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 06:51:41,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:51:41,600 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:51:41,643 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:51:41,643 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-13 06:51:41,644 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:51:41,644 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 48
[2020-10-13 06:51:41,644 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:51:41,644 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:51:41,645 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-13 06:51:41,645 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 27
[2020-10-13 06:51:41,645 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-13 06:51:43,584 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-13 06:51:43,585 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835192387]
[2020-10-13 06:51:43,585 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-13 06:51:43,585 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-13 06:51:43,585 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901018242]
[2020-10-13 06:51:43,590 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-13 06:51:43,590 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 06:51:43,590 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-13 06:51:43,590 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-13 06:51:43,591 INFO  L87              Difference]: Start difference. First operand 5825 states and 10164 transitions. Second operand 7 states.
[2020-10-13 06:52:05,528 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 06:52:05,529 INFO  L93              Difference]: Finished difference Result 17197 states and 30474 transitions.
[2020-10-13 06:52:05,530 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-13 06:52:05,530 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1715
[2020-10-13 06:52:05,530 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 06:52:05,593 INFO  L225             Difference]: With dead ends: 17197
[2020-10-13 06:52:05,593 INFO  L226             Difference]: Without dead ends: 11378
[2020-10-13 06:52:05,613 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-13 06:52:05,627 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11378 states.
[2020-10-13 06:52:05,949 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11378 to 11259.
[2020-10-13 06:52:05,949 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11259 states.
[2020-10-13 06:52:05,975 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11259 states to 11259 states and 17378 transitions.
[2020-10-13 06:52:05,976 INFO  L78                 Accepts]: Start accepts. Automaton has 11259 states and 17378 transitions. Word has length 1715
[2020-10-13 06:52:05,976 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 06:52:05,977 INFO  L479      AbstractCegarLoop]: Abstraction has 11259 states and 17378 transitions.
[2020-10-13 06:52:05,977 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-13 06:52:05,977 INFO  L276                IsEmpty]: Start isEmpty. Operand 11259 states and 17378 transitions.
[2020-10-13 06:52:06,056 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1727
[2020-10-13 06:52:06,057 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 06:52:06,058 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-13 06:52:06,059 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-13 06:52:06,059 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 06:52:06,059 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 06:52:06,060 INFO  L82        PathProgramCache]: Analyzing trace with hash 2076510892, now seen corresponding path program 1 times
[2020-10-13 06:52:06,060 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 06:52:06,060 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220827152]
[2020-10-13 06:52:06,061 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 06:52:06,210 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:52:06,266 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:52:06,590 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:52:07,199 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:52:11,291 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:52:11,291 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1752
[2020-10-13 06:52:11,291 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-13 06:52:11,291 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5074
[2020-10-13 06:52:11,292 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:52:11,292 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-13 06:52:11,292 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-13 06:52:11,292 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-13 06:52:11,293 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:52:13,269 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 06:52:13,272 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:52:13,274 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:52:13,281 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:52:13,282 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 06:52:13,282 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:52:13,282 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-13 06:52:13,282 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:52:13,283 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:52:13,283 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:52:13,283 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-13 06:52:13,284 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-13 06:52:13,311 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 06:52:13,313 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:52:13,317 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:52:13,337 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:52:13,338 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-13 06:52:13,338 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:52:13,338 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-10-13 06:52:13,339 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:52:13,339 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:52:13,340 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-13 06:52:13,340 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-10-13 06:52:13,340 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-13 06:52:13,375 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-13 06:52:13,381 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:52:13,386 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:52:13,397 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:52:13,397 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-13 06:52:13,398 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:52:13,398 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-13 06:52:13,399 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:52:13,399 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 06:52:13,399 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-10-13 06:52:13,400 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 06:52:13,400 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-13 06:52:14,585 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-10-13 06:52:14,585 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220827152]
[2020-10-13 06:52:14,585 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-13 06:52:14,586 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-13 06:52:14,587 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675262107]
[2020-10-13 06:52:14,590 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-13 06:52:14,591 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 06:52:14,591 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-13 06:52:14,592 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-13 06:52:14,592 INFO  L87              Difference]: Start difference. First operand 11259 states and 17378 transitions. Second operand 7 states.
[2020-10-13 06:52:37,595 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 06:52:37,596 INFO  L93              Difference]: Finished difference Result 26803 states and 41472 transitions.
[2020-10-13 06:52:37,604 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-13 06:52:37,604 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1726
[2020-10-13 06:52:37,604 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 06:52:37,668 INFO  L225             Difference]: With dead ends: 26803
[2020-10-13 06:52:37,669 INFO  L226             Difference]: Without dead ends: 15550
[2020-10-13 06:52:37,697 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2020-10-13 06:52:37,716 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15550 states.
[2020-10-13 06:52:38,097 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15550 to 15277.
[2020-10-13 06:52:38,097 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15277 states.
[2020-10-13 06:52:38,126 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15277 states to 15277 states and 22478 transitions.
[2020-10-13 06:52:38,126 INFO  L78                 Accepts]: Start accepts. Automaton has 15277 states and 22478 transitions. Word has length 1726
[2020-10-13 06:52:38,128 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 06:52:38,128 INFO  L479      AbstractCegarLoop]: Abstraction has 15277 states and 22478 transitions.
[2020-10-13 06:52:38,128 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-13 06:52:38,128 INFO  L276                IsEmpty]: Start isEmpty. Operand 15277 states and 22478 transitions.
[2020-10-13 06:52:38,197 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1738
[2020-10-13 06:52:38,197 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 06:52:38,198 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-13 06:52:38,207 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-13 06:52:38,207 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 06:52:38,208 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 06:52:38,213 INFO  L82        PathProgramCache]: Analyzing trace with hash 1650811996, now seen corresponding path program 1 times
[2020-10-13 06:52:38,214 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 06:52:38,214 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499432350]
[2020-10-13 06:52:38,215 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 06:52:38,412 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:52:38,496 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:52:38,757 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:52:39,036 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:52:43,695 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:52:43,696 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1763
[2020-10-13 06:52:43,696 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-13 06:52:43,696 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5280
[2020-10-13 06:52:43,697 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:52:43,697 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:52:43,697 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 32
[2020-10-13 06:52:43,697 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 27
[2020-10-13 06:52:43,697 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:52:43,993 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 06:52:43,995 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:52:43,996 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:52:43,998 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:52:43,999 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 06:52:44,000 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:52:44,000 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-13 06:52:44,000 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:52:44,000 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 06:52:44,000 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:52:44,001 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 06:52:44,001 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:52:44,020 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 06:52:44,025 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:52:44,029 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:52:44,047 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:52:44,047 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-13 06:52:44,047 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:52:44,047 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-10-13 06:52:44,048 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:52:44,048 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:52:44,048 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:52:44,048 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-13 06:52:44,048 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:52:44,057 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-10-13 06:52:44,063 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:52:44,068 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:52:44,104 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:52:44,104 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-13 06:52:44,104 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:52:44,106 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 40
[2020-10-13 06:52:44,106 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:52:44,106 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:52:44,107 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-13 06:52:44,107 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 27
[2020-10-13 06:52:44,107 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:52:45,464 INFO  L134       CoverageAnalysis]: Checked inductivity of 62 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-13 06:52:45,464 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499432350]
[2020-10-13 06:52:45,464 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-13 06:52:45,465 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-13 06:52:45,465 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83872697]
[2020-10-13 06:52:45,467 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-13 06:52:45,468 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 06:52:45,468 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-13 06:52:45,468 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-13 06:52:45,469 INFO  L87              Difference]: Start difference. First operand 15277 states and 22478 transitions. Second operand 7 states.
[2020-10-13 06:53:21,282 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 06:53:21,282 INFO  L93              Difference]: Finished difference Result 60583 states and 97017 transitions.
[2020-10-13 06:53:21,284 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-13 06:53:21,284 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1737
[2020-10-13 06:53:21,284 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 06:53:21,520 INFO  L225             Difference]: With dead ends: 60583
[2020-10-13 06:53:21,520 INFO  L226             Difference]: Without dead ends: 45312
[2020-10-13 06:53:21,610 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-13 06:53:21,665 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45312 states.
[2020-10-13 06:53:22,796 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45312 to 45220.
[2020-10-13 06:53:22,797 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 45220 states.
[2020-10-13 06:53:24,514 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45220 states to 45220 states and 65652 transitions.
[2020-10-13 06:53:24,515 INFO  L78                 Accepts]: Start accepts. Automaton has 45220 states and 65652 transitions. Word has length 1737
[2020-10-13 06:53:24,515 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 06:53:24,515 INFO  L479      AbstractCegarLoop]: Abstraction has 45220 states and 65652 transitions.
[2020-10-13 06:53:24,516 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-13 06:53:24,516 INFO  L276                IsEmpty]: Start isEmpty. Operand 45220 states and 65652 transitions.
[2020-10-13 06:53:24,682 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1761
[2020-10-13 06:53:24,682 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 06:53:24,684 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-13 06:53:24,684 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-13 06:53:24,684 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 06:53:24,685 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 06:53:24,686 INFO  L82        PathProgramCache]: Analyzing trace with hash 1602151685, now seen corresponding path program 1 times
[2020-10-13 06:53:24,686 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 06:53:24,686 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574736493]
[2020-10-13 06:53:24,686 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 06:53:24,809 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:53:24,849 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:53:24,943 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:53:25,309 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:53:26,013 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:53:29,302 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:53:29,850 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:53:29,851 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1786
[2020-10-13 06:53:29,851 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-10-13 06:53:29,851 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5037
[2020-10-13 06:53:29,851 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:53:29,851 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:53:29,851 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 50
[2020-10-13 06:53:29,851 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-10-13 06:53:29,852 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:53:30,140 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 06:53:30,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:53:30,143 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:53:30,145 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:53:30,145 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 06:53:30,146 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:53:30,146 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-13 06:53:30,146 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:53:30,146 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 06:53:30,147 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:53:30,147 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 06:53:30,147 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:53:30,164 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 06:53:30,171 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:53:30,177 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:53:30,196 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:53:30,197 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-13 06:53:30,197 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:53:30,197 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-10-13 06:53:30,197 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:53:30,197 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:53:30,197 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:53:30,198 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 35
[2020-10-13 06:53:30,198 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:53:30,206 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2020-10-13 06:53:30,210 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:53:30,215 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:53:30,256 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:53:30,256 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 32
[2020-10-13 06:53:30,256 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:53:30,257 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 44
[2020-10-13 06:53:30,257 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:53:30,257 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:53:30,257 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-13 06:53:30,257 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-10-13 06:53:30,258 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:53:31,776 INFO  L134       CoverageAnalysis]: Checked inductivity of 92 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-13 06:53:31,777 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574736493]
[2020-10-13 06:53:31,777 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-13 06:53:31,777 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-13 06:53:31,778 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540589030]
[2020-10-13 06:53:31,779 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-13 06:53:31,779 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 06:53:31,779 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-13 06:53:31,779 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-13 06:53:31,780 INFO  L87              Difference]: Start difference. First operand 45220 states and 65652 transitions. Second operand 7 states.
[2020-10-13 06:53:56,475 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 06:53:56,476 INFO  L93              Difference]: Finished difference Result 134458 states and 213940 transitions.
[2020-10-13 06:53:56,477 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-13 06:53:56,477 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1760
[2020-10-13 06:53:56,477 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 06:53:56,914 INFO  L225             Difference]: With dead ends: 134458
[2020-10-13 06:53:56,915 INFO  L226             Difference]: Without dead ends: 89244
[2020-10-13 06:53:57,043 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-13 06:53:57,148 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 89244 states.
[2020-10-13 06:53:59,494 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 89244 to 86651.
[2020-10-13 06:53:59,495 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 86651 states.
[2020-10-13 06:53:59,830 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86651 states to 86651 states and 125560 transitions.
[2020-10-13 06:53:59,835 INFO  L78                 Accepts]: Start accepts. Automaton has 86651 states and 125560 transitions. Word has length 1760
[2020-10-13 06:53:59,836 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 06:53:59,836 INFO  L479      AbstractCegarLoop]: Abstraction has 86651 states and 125560 transitions.
[2020-10-13 06:53:59,836 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-13 06:53:59,836 INFO  L276                IsEmpty]: Start isEmpty. Operand 86651 states and 125560 transitions.
[2020-10-13 06:54:00,170 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1776
[2020-10-13 06:54:00,171 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 06:54:00,172 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2020-10-13 06:54:00,173 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-13 06:54:00,173 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 06:54:00,173 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 06:54:00,174 INFO  L82        PathProgramCache]: Analyzing trace with hash -204244313, now seen corresponding path program 1 times
[2020-10-13 06:54:00,174 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 06:54:00,174 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925058284]
[2020-10-13 06:54:00,175 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 06:54:00,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:54:00,356 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:54:00,466 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:54:00,857 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:54:05,568 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:54:05,568 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1801
[2020-10-13 06:54:05,569 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-13 06:54:05,569 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5246
[2020-10-13 06:54:05,569 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:54:05,570 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:54:05,570 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 51
[2020-10-13 06:54:05,570 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 48
[2020-10-13 06:54:05,571 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-13 06:54:06,174 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 06:54:06,176 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:54:06,177 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:54:06,179 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:54:06,180 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 06:54:06,180 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:54:06,180 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-13 06:54:06,180 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:54:06,181 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 06:54:06,181 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:54:06,181 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 06:54:06,181 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:54:06,206 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 06:54:06,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:54:06,225 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:54:06,256 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:54:06,257 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 42
[2020-10-13 06:54:06,257 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:54:06,257 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 38
[2020-10-13 06:54:06,257 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:54:06,257 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:54:06,258 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:54:06,258 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 36
[2020-10-13 06:54:06,258 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:54:06,276 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2020-10-13 06:54:06,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:54:06,293 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:54:06,365 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:54:06,366 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 46
[2020-10-13 06:54:06,366 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:54:06,366 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 78
[2020-10-13 06:54:06,366 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:54:06,367 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:54:06,367 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-13 06:54:06,367 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-10-13 06:54:06,367 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:54:08,040 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-13 06:54:08,040 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925058284]
[2020-10-13 06:54:08,040 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-13 06:54:08,041 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-13 06:54:08,041 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817478325]
[2020-10-13 06:54:08,042 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-13 06:54:08,043 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 06:54:08,043 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-13 06:54:08,043 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-13 06:54:08,043 INFO  L87              Difference]: Start difference. First operand 86651 states and 125560 transitions. Second operand 7 states.