/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_label58.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-14 01:27:37,181 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-14 01:27:37,183 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-14 01:27:37,207 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-14 01:27:37,208 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-14 01:27:37,209 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-14 01:27:37,210 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-14 01:27:37,212 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-14 01:27:37,214 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-14 01:27:37,215 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-14 01:27:37,216 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-14 01:27:37,217 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-14 01:27:37,217 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-14 01:27:37,218 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-14 01:27:37,219 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-14 01:27:37,221 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-14 01:27:37,222 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-14 01:27:37,223 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-14 01:27:37,224 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-14 01:27:37,226 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-14 01:27:37,228 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-14 01:27:37,229 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-14 01:27:37,231 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-14 01:27:37,231 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-14 01:27:37,234 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-14 01:27:37,235 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-14 01:27:37,235 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-14 01:27:37,236 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-14 01:27:37,236 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-14 01:27:37,237 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-14 01:27:37,237 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-14 01:27:37,238 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-14 01:27:37,239 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-14 01:27:37,240 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-14 01:27:37,241 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-14 01:27:37,241 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-14 01:27:37,242 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-14 01:27:37,242 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-14 01:27:37,242 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-14 01:27:37,243 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-14 01:27:37,244 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-14 01:27:37,245 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 01:27:37,271 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-14 01:27:37,271 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-14 01:27:37,277 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-14 01:27:37,277 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-14 01:27:37,277 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-14 01:27:37,278 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-14 01:27:37,278 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-14 01:27:37,278 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-14 01:27:37,278 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-14 01:27:37,278 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-14 01:27:37,279 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-14 01:27:37,279 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-14 01:27:37,282 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-14 01:27:37,282 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-14 01:27:37,283 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-14 01:27:37,283 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-14 01:27:37,283 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-14 01:27:37,283 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-14 01:27:37,283 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-14 01:27:37,284 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-14 01:27:37,284 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-14 01:27:37,284 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:27:37,284 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-14 01:27:37,284 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-14 01:27:37,285 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-14 01:27:37,285 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-14 01:27:37,287 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-14 01:27:37,287 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-14 01:27:37,288 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-14 01:27:37,288 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 01:27:37,643 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-14 01:27:37,661 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-14 01:27:37,667 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-14 01:27:37,670 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-14 01:27:37,670 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-14 01:27:37,671 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label58.c
[2020-10-14 01:27:37,748 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b3b3fbaa/94ad8722de084d86942e8b6598993adb/FLAG1584e14e4
[2020-10-14 01:27:38,768 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-14 01:27:38,770 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label58.c
[2020-10-14 01:27:38,828 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b3b3fbaa/94ad8722de084d86942e8b6598993adb/FLAG1584e14e4
[2020-10-14 01:27:39,101 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b3b3fbaa/94ad8722de084d86942e8b6598993adb
[2020-10-14 01:27:39,113 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-14 01:27:39,115 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-14 01:27:39,117 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-14 01:27:39,117 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-14 01:27:39,121 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-14 01:27:39,122 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:27:39" (1/1) ...
[2020-10-14 01:27:39,126 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b37b080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:27:39, skipping insertion in model container
[2020-10-14 01:27:39,126 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:27:39" (1/1) ...
[2020-10-14 01:27:39,135 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-14 01:27:39,427 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-14 01:27:42,099 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:27:42,106 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-14 01:27:43,240 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:27:43,293 INFO  L208         MainTranslator]: Completed translation
[2020-10-14 01:27:43,294 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:27:43 WrapperNode
[2020-10-14 01:27:43,294 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-14 01:27:43,295 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-14 01:27:43,295 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-14 01:27:43,295 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-14 01:27:43,308 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:27:43" (1/1) ...
[2020-10-14 01:27:43,309 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:27:43" (1/1) ...
[2020-10-14 01:27:43,400 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:27:43" (1/1) ...
[2020-10-14 01:27:43,401 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:27:43" (1/1) ...
[2020-10-14 01:27:43,606 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:27:43" (1/1) ...
[2020-10-14 01:27:43,683 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:27:43" (1/1) ...
[2020-10-14 01:27:43,724 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:27:43" (1/1) ...
[2020-10-14 01:27:43,778 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-14 01:27:43,779 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-14 01:27:43,779 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-14 01:27:43,779 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-14 01:27:43,781 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:27:43" (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 01:27:43,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-14 01:27:43,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-14 01:27:43,864 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-14 01:27:43,864 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-14 01:27:43,864 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-14 01:27:43,866 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-14 01:27:43,867 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-14 01:27:43,868 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-14 01:27:43,868 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-14 01:27:43,868 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-14 01:27:43,868 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-14 01:27:43,869 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-14 01:27:43,869 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-14 01:27:43,869 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-14 01:27:43,869 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-14 01:27:43,870 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-14 01:27:43,870 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-14 01:27:43,871 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-14 01:27:43,871 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-14 01:27:43,871 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-14 01:27:43,871 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-14 01:27:43,872 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-14 01:27:43,872 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-14 01:27:43,872 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-14 01:27:43,872 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-14 01:27:52,571 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-14 01:27:52,571 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-14 01:27:52,586 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:27:52 BoogieIcfgContainer
[2020-10-14 01:27:52,587 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-14 01:27:52,588 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-14 01:27:52,588 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-14 01:27:52,591 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-14 01:27:52,592 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:27:39" (1/3) ...
[2020-10-14 01:27:52,593 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2ef4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:27:52, skipping insertion in model container
[2020-10-14 01:27:52,593 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:27:43" (2/3) ...
[2020-10-14 01:27:52,593 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2ef4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:27:52, skipping insertion in model container
[2020-10-14 01:27:52,593 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:27:52" (3/3) ...
[2020-10-14 01:27:52,595 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label58.c
[2020-10-14 01:27:52,606 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-14 01:27:52,616 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-14 01:27:52,630 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-14 01:27:52,664 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-14 01:27:52,664 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-14 01:27:52,664 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-14 01:27:52,664 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-14 01:27:52,665 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-14 01:27:52,665 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-14 01:27:52,665 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-14 01:27:52,665 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-14 01:27:52,717 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-14 01:27:52,816 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1657
[2020-10-14 01:27:52,817 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:27:52,819 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]
[2020-10-14 01:27:52,820 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:27:52,826 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:27:52,828 INFO  L82        PathProgramCache]: Analyzing trace with hash 39504905, now seen corresponding path program 1 times
[2020-10-14 01:27:52,834 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:27:52,835 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783565803]
[2020-10-14 01:27:52,836 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:27:53,835 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:27:54,550 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:27:59,039 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:27:59,040 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1678
[2020-10-14 01:27:59,040 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:27:59,040 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5193
[2020-10-14 01:27:59,045 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:27:59,045 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:27:59,045 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-14 01:27:59,046 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:27:59,046 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1672
[2020-10-14 01:27:59,046 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-10-14 01:28:00,964 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:28:00,968 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:28:00,971 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:28:00,977 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:28:00,977 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:28:00,977 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:28:00,977 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-14 01:28:00,978 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:28:00,978 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:28:00,978 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:28:00,978 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:28:00,979 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:28:00,979 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:28:02,941 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 01:28:02,942 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783565803]
[2020-10-14 01:28:02,944 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:28:02,944 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-14 01:28:02,945 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496370818]
[2020-10-14 01:28:02,954 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-14 01:28:02,955 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:28:02,966 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-14 01:28:02,966 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-14 01:28:02,968 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 4 states.
[2020-10-14 01:28:19,698 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:28:19,699 INFO  L93              Difference]: Finished difference Result 6309 states and 11850 transitions.
[2020-10-14 01:28:19,700 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 01:28:19,702 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1656
[2020-10-14 01:28:19,709 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:28:19,764 INFO  L225             Difference]: With dead ends: 6309
[2020-10-14 01:28:19,764 INFO  L226             Difference]: Without dead ends: 4023
[2020-10-14 01:28:19,775 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:28:19,802 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4023 states.
[2020-10-14 01:28:19,997 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4023 to 4008.
[2020-10-14 01:28:19,998 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4008 states.
[2020-10-14 01:28:20,020 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 6271 transitions.
[2020-10-14 01:28:20,022 INFO  L78                 Accepts]: Start accepts. Automaton has 4008 states and 6271 transitions. Word has length 1656
[2020-10-14 01:28:20,030 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:28:20,030 INFO  L479      AbstractCegarLoop]: Abstraction has 4008 states and 6271 transitions.
[2020-10-14 01:28:20,030 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-14 01:28:20,030 INFO  L276                IsEmpty]: Start isEmpty. Operand 4008 states and 6271 transitions.
[2020-10-14 01:28:20,287 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1666
[2020-10-14 01:28:20,287 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:28:20,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:20,290 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-14 01:28:20,291 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:28:20,291 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:28:20,292 INFO  L82        PathProgramCache]: Analyzing trace with hash -1298921026, now seen corresponding path program 1 times
[2020-10-14 01:28:20,293 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:28:20,293 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858340305]
[2020-10-14 01:28:20,294 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:28:20,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:28:20,454 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:28:22,668 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:28:25,465 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:28:25,466 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1689
[2020-10-14 01:28:25,466 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:28:25,466 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5038
[2020-10-14 01:28:25,467 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:28:25,467 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:28:25,468 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:28:25,468 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:28:25,468 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-14 01:28:25,468 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:28:26,008 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:28:26,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:28:26,014 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:28:26,019 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:28:26,020 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:28:26,020 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:28:26,020 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-14 01:28:26,021 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:28:26,021 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:28:26,021 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:28:26,022 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:28:26,022 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:28:26,022 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:28:26,046 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:28:26,049 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:28:26,052 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:28:26,070 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:28:26,070 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-14 01:28:26,071 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:28:26,071 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-14 01:28:26,072 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:28:26,072 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:28:26,072 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:28:26,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:28:26,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-14 01:28:26,073 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:28:27,098 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 01:28:27,099 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858340305]
[2020-10-14 01:28:27,099 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:28:27,099 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:28:27,100 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936299722]
[2020-10-14 01:28:27,104 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:28:27,104 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:28:27,104 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:28:27,105 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:28:27,105 INFO  L87              Difference]: Start difference. First operand 4008 states and 6271 transitions. Second operand 7 states.
[2020-10-14 01:28:50,312 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:28:50,312 INFO  L93              Difference]: Finished difference Result 11900 states and 18789 transitions.
[2020-10-14 01:28:50,313 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-14 01:28:50,313 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1665
[2020-10-14 01:28:50,314 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:28:50,359 INFO  L225             Difference]: With dead ends: 11900
[2020-10-14 01:28:50,359 INFO  L226             Difference]: Without dead ends: 7898
[2020-10-14 01:28:50,370 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 01:28:50,380 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7898 states.
[2020-10-14 01:28:50,585 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7697.
[2020-10-14 01:28:50,586 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7697 states.
[2020-10-14 01:28:50,619 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7697 states to 7697 states and 11289 transitions.
[2020-10-14 01:28:50,619 INFO  L78                 Accepts]: Start accepts. Automaton has 7697 states and 11289 transitions. Word has length 1665
[2020-10-14 01:28:50,620 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:28:50,620 INFO  L479      AbstractCegarLoop]: Abstraction has 7697 states and 11289 transitions.
[2020-10-14 01:28:50,620 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:28:50,620 INFO  L276                IsEmpty]: Start isEmpty. Operand 7697 states and 11289 transitions.
[2020-10-14 01:28:50,743 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1678
[2020-10-14 01:28:50,744 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:28:50,745 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-14 01:28:50,745 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-14 01:28:50,746 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:28:50,746 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:28:50,747 INFO  L82        PathProgramCache]: Analyzing trace with hash -514945278, now seen corresponding path program 1 times
[2020-10-14 01:28:50,747 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:28:50,747 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260464229]
[2020-10-14 01:28:50,748 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:28:50,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:28:50,895 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:28:50,955 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:28:52,646 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:28:55,905 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:28:55,905 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1703
[2020-10-14 01:28:55,905 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:28:55,906 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5031
[2020-10-14 01:28:55,906 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:28:55,906 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:28:55,906 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:28:55,907 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 22
[2020-10-14 01:28:55,907 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-10-14 01:28:55,907 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:28:56,931 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:28:56,933 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:28:56,934 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:28:56,938 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:28:56,938 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:28:56,938 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:28:56,939 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-14 01:28:56,939 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:28:56,940 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:28:56,940 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:28:56,940 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:28:56,941 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:28:56,941 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:28:56,966 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:28:56,970 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:28:56,973 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:28:56,985 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:28:56,986 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-14 01:28:56,986 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:28:56,986 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-14 01:28:56,987 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:28:56,987 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:28:56,987 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:28:56,988 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:28:56,988 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-14 01:28:56,988 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:28:57,000 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2020-10-14 01:28:57,004 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:28:57,006 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:28:57,022 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:28:57,022 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-14 01:28:57,022 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:28:57,023 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-10-14 01:28:57,023 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:28:57,023 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:28:57,023 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:28:57,024 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:28:57,024 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-14 01:28:57,024 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:28:58,213 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-14 01:28:58,214 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260464229]
[2020-10-14 01:28:58,214 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:28:58,214 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-14 01:28:58,215 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391734039]
[2020-10-14 01:28:58,217 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:28:58,217 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:28:58,218 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:28:58,218 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:28:58,218 INFO  L87              Difference]: Start difference. First operand 7697 states and 11289 transitions. Second operand 7 states.
[2020-10-14 01:29:23,651 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:29:23,651 INFO  L93              Difference]: Finished difference Result 23185 states and 35254 transitions.
[2020-10-14 01:29:23,652 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:29:23,653 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1677
[2020-10-14 01:29:23,653 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:29:23,747 INFO  L225             Difference]: With dead ends: 23185
[2020-10-14 01:29:23,747 INFO  L226             Difference]: Without dead ends: 15494
[2020-10-14 01:29:23,776 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 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 01:29:23,798 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15494 states.
[2020-10-14 01:29:24,198 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15494 to 15256.
[2020-10-14 01:29:24,199 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15256 states.
[2020-10-14 01:29:24,247 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15256 states to 15256 states and 20604 transitions.
[2020-10-14 01:29:24,249 INFO  L78                 Accepts]: Start accepts. Automaton has 15256 states and 20604 transitions. Word has length 1677
[2020-10-14 01:29:24,250 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:29:24,250 INFO  L479      AbstractCegarLoop]: Abstraction has 15256 states and 20604 transitions.
[2020-10-14 01:29:24,250 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:29:24,250 INFO  L276                IsEmpty]: Start isEmpty. Operand 15256 states and 20604 transitions.
[2020-10-14 01:29:24,332 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1698
[2020-10-14 01:29:24,332 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:29:24,334 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]
[2020-10-14 01:29:24,334 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-14 01:29:24,335 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:29:24,335 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:29:24,336 INFO  L82        PathProgramCache]: Analyzing trace with hash 119362512, now seen corresponding path program 1 times
[2020-10-14 01:29:24,336 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:29:24,337 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141949881]
[2020-10-14 01:29:24,338 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:29:24,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:29:24,888 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:29:25,386 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:29:29,748 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:29:29,749 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1721
[2020-10-14 01:29:29,749 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:29:29,749 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5049
[2020-10-14 01:29:29,749 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:29:29,750 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:29:29,750 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:29:29,750 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:29:29,750 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-14 01:29:29,750 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:29:30,178 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:29:30,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:29:30,183 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:29:30,190 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:29:30,190 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:29:30,190 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:29:30,190 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-14 01:29:30,191 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:29:30,191 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:29:30,191 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:29:30,191 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:29:30,192 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:29:30,192 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:29:30,210 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:29:30,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:29:30,225 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:29:30,287 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:29:30,287 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 42
[2020-10-14 01:29:30,287 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:29:30,287 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 67
[2020-10-14 01:29:30,288 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:29:30,288 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:29:30,290 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:29:30,290 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:29:30,290 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-10-14 01:29:30,290 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-14 01:29:31,336 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 01:29:31,336 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141949881]
[2020-10-14 01:29:31,336 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:29:31,337 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:29:31,337 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968160133]
[2020-10-14 01:29:31,339 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:29:31,339 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:29:31,340 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:29:31,340 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:29:31,340 INFO  L87              Difference]: Start difference. First operand 15256 states and 20604 transitions. Second operand 7 states.
[2020-10-14 01:29:54,143 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:29:54,143 INFO  L93              Difference]: Finished difference Result 45906 states and 65217 transitions.
[2020-10-14 01:29:54,144 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-14 01:29:54,145 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1697
[2020-10-14 01:29:54,145 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:29:54,275 INFO  L225             Difference]: With dead ends: 45906
[2020-10-14 01:29:54,275 INFO  L226             Difference]: Without dead ends: 30656
[2020-10-14 01:29:54,323 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 01:29:54,360 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30656 states.
[2020-10-14 01:29:54,970 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30656 to 30480.
[2020-10-14 01:29:54,970 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30480 states.
[2020-10-14 01:29:55,044 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30480 states to 30480 states and 40478 transitions.
[2020-10-14 01:29:55,045 INFO  L78                 Accepts]: Start accepts. Automaton has 30480 states and 40478 transitions. Word has length 1697
[2020-10-14 01:29:55,045 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:29:55,045 INFO  L479      AbstractCegarLoop]: Abstraction has 30480 states and 40478 transitions.
[2020-10-14 01:29:55,046 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:29:55,046 INFO  L276                IsEmpty]: Start isEmpty. Operand 30480 states and 40478 transitions.
[2020-10-14 01:29:55,173 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1744
[2020-10-14 01:29:55,174 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:29:55,175 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:29:55,176 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-14 01:29:55,176 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:29:55,176 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:29:55,177 INFO  L82        PathProgramCache]: Analyzing trace with hash -1817581934, now seen corresponding path program 1 times
[2020-10-14 01:29:55,177 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:29:55,178 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697882942]
[2020-10-14 01:29:55,178 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:29:55,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:29:55,318 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:29:55,413 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:29:55,726 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:30:00,408 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:30:00,408 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1771
[2020-10-14 01:30:00,409 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:30:00,409 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5112
[2020-10-14 01:30:00,409 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:30:00,409 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:30:00,409 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:30:00,410 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 58
[2020-10-14 01:30:00,410 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 44
[2020-10-14 01:30:00,410 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:30:00,741 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:30:00,743 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:30:00,744 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:30:00,746 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:30:00,746 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:30:00,747 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:30:00,747 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-14 01:30:00,747 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:30:00,747 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:30:00,748 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:30:00,748 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:30:00,748 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:30:00,748 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:30:00,766 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:30:00,768 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:30:00,769 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:30:00,774 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:30:00,774 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-10-14 01:30:00,775 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:30:00,775 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-14 01:30:00,775 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:30:00,775 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:30:00,775 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:30:00,776 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:30:00,776 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:30:00,776 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:30:00,779 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-10-14 01:30:00,785 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:30:00,791 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:30:00,816 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:30:00,816 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-14 01:30:00,816 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:30:00,816 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 29
[2020-10-14 01:30:00,817 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:30:00,817 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:30:00,817 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:30:00,817 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:30:00,817 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 27
[2020-10-14 01:30:00,818 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:30:00,832 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2020-10-14 01:30:00,842 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:30:00,848 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:30:00,888 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:30:00,888 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 42
[2020-10-14 01:30:00,888 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:30:00,888 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 45
[2020-10-14 01:30:00,889 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:30:00,889 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:30:00,889 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:30:00,889 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:30:00,889 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-10-14 01:30:00,890 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:30:02,110 INFO  L134       CoverageAnalysis]: Checked inductivity of 138 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2020-10-14 01:30:02,111 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697882942]
[2020-10-14 01:30:02,111 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:30:02,111 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-14 01:30:02,111 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698164833]
[2020-10-14 01:30:02,114 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-14 01:30:02,114 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:30:02,115 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-14 01:30:02,115 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-14 01:30:02,115 INFO  L87              Difference]: Start difference. First operand 30480 states and 40478 transitions. Second operand 8 states.
[2020-10-14 01:30:52,295 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:30:52,296 INFO  L93              Difference]: Finished difference Result 148202 states and 223379 transitions.
[2020-10-14 01:30:52,297 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-10-14 01:30:52,297 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1743
[2020-10-14 01:30:52,297 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:30:52,703 INFO  L225             Difference]: With dead ends: 148202
[2020-10-14 01:30:52,704 INFO  L226             Difference]: Without dead ends: 117728
[2020-10-14 01:30:52,839 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 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 01:30:52,955 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 117728 states.
[2020-10-14 01:30:55,021 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 117728 to 115692.
[2020-10-14 01:30:55,021 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 115692 states.
[2020-10-14 01:30:55,254 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 115692 states to 115692 states and 155666 transitions.
[2020-10-14 01:30:55,254 INFO  L78                 Accepts]: Start accepts. Automaton has 115692 states and 155666 transitions. Word has length 1743
[2020-10-14 01:30:55,255 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:30:55,255 INFO  L479      AbstractCegarLoop]: Abstraction has 115692 states and 155666 transitions.
[2020-10-14 01:30:55,255 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-14 01:30:55,255 INFO  L276                IsEmpty]: Start isEmpty. Operand 115692 states and 155666 transitions.
[2020-10-14 01:30:55,733 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1770
[2020-10-14 01:30:55,733 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:30:55,735 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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]
[2020-10-14 01:30:55,735 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-14 01:30:55,735 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:30:55,736 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:30:55,736 INFO  L82        PathProgramCache]: Analyzing trace with hash 1798829832, now seen corresponding path program 1 times
[2020-10-14 01:30:55,737 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:30:55,737 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807595908]
[2020-10-14 01:30:55,737 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:30:56,108 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:30:56,365 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:31:01,210 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:31:01,210 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1793
[2020-10-14 01:31:01,210 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:31:01,210 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5096
[2020-10-14 01:31:01,211 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:31:01,211 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:31:01,211 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-14 01:31:01,211 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 123
[2020-10-14 01:31:01,211 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1669
[2020-10-14 01:31:01,211 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:31:01,770 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:31:01,772 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:31:01,773 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:31:01,775 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:31:01,775 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:31:01,775 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:31:01,775 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-14 01:31:01,776 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:31:01,776 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:31:01,776 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:31:01,776 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:31:01,776 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:31:01,776 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:31:01,805 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:31:01,823 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:31:01,833 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:31:01,879 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:31:01,879 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 114
[2020-10-14 01:31:01,879 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:31:01,879 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 55
[2020-10-14 01:31:01,879 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:31:01,879 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:31:01,880 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:31:01,880 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:31:01,880 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 108
[2020-10-14 01:31:01,880 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:31:03,585 INFO  L134       CoverageAnalysis]: Checked inductivity of 110 backedges. 109 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:31:03,585 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807595908]
[2020-10-14 01:31:03,586 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:31:03,586 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-10-14 01:31:03,586 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491607117]
[2020-10-14 01:31:03,588 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-14 01:31:03,588 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:31:03,588 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-14 01:31:03,588 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:31:03,589 INFO  L87              Difference]: Start difference. First operand 115692 states and 155666 transitions. Second operand 5 states.