/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_label29.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-14 01:20:07,240 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-14 01:20:07,243 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-14 01:20:07,283 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-14 01:20:07,284 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-14 01:20:07,292 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-14 01:20:07,294 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-14 01:20:07,297 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-14 01:20:07,300 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-14 01:20:07,303 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-10-14 01:20:07,305 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-14 01:20:07,305 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-14 01:20:07,308 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-14 01:20:07,312 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-14 01:20:07,313 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-14 01:20:07,315 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-14 01:20:07,317 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-14 01:20:07,318 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-14 01:20:07,325 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-14 01:20:07,327 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-14 01:20:07,328 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-14 01:20:07,329 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-14 01:20:07,330 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-14 01:20:07,342 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-14 01:20:07,344 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-14 01:20:07,344 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-14 01:20:07,345 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-14 01:20:07,346 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-14 01:20:07,347 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-14 01:20:07,347 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-14 01:20:07,352 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-14 01:20:07,353 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-14 01:20:07,353 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-14 01:20:07,357 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-14 01:20:07,358 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-14 01:20:07,358 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-14 01:20:07,359 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-14 01:20:07,359 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-14 01:20:07,361 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-14 01:20:07,362 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-14 01:20:07,363 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-14 01:20:07,398 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-14 01:20:07,399 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-14 01:20:07,401 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-14 01:20:07,401 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-14 01:20:07,401 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-14 01:20:07,401 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-14 01:20:07,402 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-14 01:20:07,402 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-14 01:20:07,402 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-14 01:20:07,402 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-14 01:20:07,403 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-14 01:20:07,403 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-14 01:20:07,404 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-14 01:20:07,404 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-14 01:20:07,405 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-14 01:20:07,405 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-14 01:20:07,405 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-14 01:20:07,405 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-14 01:20:07,406 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-14 01:20:07,406 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-14 01:20:07,406 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-14 01:20:07,406 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:20:07,406 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-14 01:20:07,407 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-14 01:20:07,407 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-14 01:20:07,407 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-14 01:20:07,407 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-14 01:20:07,407 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-14 01:20:07,408 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-14 01:20:07,408 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
[2020-10-14 01:20:07,700 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-14 01:20:07,712 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-14 01:20:07,715 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-14 01:20:07,717 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-14 01:20:07,718 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-14 01:20:07,718 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label29.c
[2020-10-14 01:20:07,792 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cf03b07d/9a8740c626a84070b5fbc825318d901c/FLAG198782639
[2020-10-14 01:20:08,769 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-14 01:20:08,769 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label29.c
[2020-10-14 01:20:08,839 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cf03b07d/9a8740c626a84070b5fbc825318d901c/FLAG198782639
[2020-10-14 01:20:09,119 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cf03b07d/9a8740c626a84070b5fbc825318d901c
[2020-10-14 01:20:09,130 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-14 01:20:09,132 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-14 01:20:09,135 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-14 01:20:09,136 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-14 01:20:09,139 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-14 01:20:09,140 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:20:09" (1/1) ...
[2020-10-14 01:20:09,144 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12925ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:09, skipping insertion in model container
[2020-10-14 01:20:09,145 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:20:09" (1/1) ...
[2020-10-14 01:20:09,154 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-14 01:20:09,403 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-14 01:20:12,255 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:20:12,260 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-14 01:20:13,639 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:20:13,709 INFO  L208         MainTranslator]: Completed translation
[2020-10-14 01:20:13,711 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:13 WrapperNode
[2020-10-14 01:20:13,712 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-14 01:20:13,712 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-14 01:20:13,713 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-14 01:20:13,713 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-14 01:20:13,728 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:13" (1/1) ...
[2020-10-14 01:20:13,730 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:13" (1/1) ...
[2020-10-14 01:20:13,825 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:13" (1/1) ...
[2020-10-14 01:20:13,826 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:13" (1/1) ...
[2020-10-14 01:20:14,006 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:13" (1/1) ...
[2020-10-14 01:20:14,083 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:13" (1/1) ...
[2020-10-14 01:20:14,132 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:13" (1/1) ...
[2020-10-14 01:20:14,323 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-14 01:20:14,324 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-14 01:20:14,324 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-14 01:20:14,324 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-14 01:20:14,325 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:13" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:20:14,410 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-14 01:20:14,410 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-14 01:20:14,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-14 01:20:14,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-14 01:20:14,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-14 01:20:14,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-14 01:20:14,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-14 01:20:14,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-14 01:20:14,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-14 01:20:14,412 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-14 01:20:14,413 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-14 01:20:14,413 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-14 01:20:14,413 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-14 01:20:14,413 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-14 01:20:14,413 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-14 01:20:14,414 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-14 01:20:14,415 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-14 01:20:14,415 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-14 01:20:14,415 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-14 01:20:14,415 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-14 01:20:14,415 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-14 01:20:14,416 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-14 01:20:14,416 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-14 01:20:14,416 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-14 01:20:14,417 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-14 01:20:22,544 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-14 01:20:22,544 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-14 01:20:22,558 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:20:22 BoogieIcfgContainer
[2020-10-14 01:20:22,558 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-14 01:20:22,560 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-14 01:20:22,560 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-14 01:20:22,563 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-14 01:20:22,564 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:20:09" (1/3) ...
[2020-10-14 01:20:22,564 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54254934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:20:22, skipping insertion in model container
[2020-10-14 01:20:22,565 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:13" (2/3) ...
[2020-10-14 01:20:22,565 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54254934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:20:22, skipping insertion in model container
[2020-10-14 01:20:22,565 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:20:22" (3/3) ...
[2020-10-14 01:20:22,567 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label29.c
[2020-10-14 01:20:22,577 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-14 01:20:22,586 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-14 01:20:22,600 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-14 01:20:22,631 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-14 01:20:22,631 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-14 01:20:22,631 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-14 01:20:22,631 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-14 01:20:22,631 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-14 01:20:22,632 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-14 01:20:22,632 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-14 01:20:22,632 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-14 01:20:22,686 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-14 01:20:22,897 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1712
[2020-10-14 01:20:22,898 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:20:22,901 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]
[2020-10-14 01:20:22,902 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:20:22,909 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:20:22,911 INFO  L82        PathProgramCache]: Analyzing trace with hash -1182876720, now seen corresponding path program 1 times
[2020-10-14 01:20:22,918 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:20:22,918 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630238223]
[2020-10-14 01:20:22,919 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:20:23,822 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:24,311 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:28,927 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:28,927 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1733
[2020-10-14 01:20:28,927 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:20:28,928 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5096
[2020-10-14 01:20:28,930 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:28,930 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:28,930 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-14 01:20:28,931 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:20:28,931 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1727
[2020-10-14 01:20:28,931 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 01:20:30,757 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:20:30,763 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:30,765 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:30,772 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:30,773 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:20:30,773 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:20:30,773 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-14 01:20:30,773 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:30,774 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:30,774 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:20:30,774 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:20:30,775 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:20:30,775 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:20:33,327 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:20:33,328 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630238223]
[2020-10-14 01:20:33,330 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:20:33,330 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-14 01:20:33,331 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082167654]
[2020-10-14 01:20:33,339 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-14 01:20:33,340 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:20:33,351 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-14 01:20:33,351 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-14 01:20:33,353 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 4 states.
[2020-10-14 01:20:49,460 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:20:49,460 INFO  L93              Difference]: Finished difference Result 6360 states and 11961 transitions.
[2020-10-14 01:20:49,461 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 01:20:49,462 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1711
[2020-10-14 01:20:49,469 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:20:49,513 INFO  L225             Difference]: With dead ends: 6360
[2020-10-14 01:20:49,514 INFO  L226             Difference]: Without dead ends: 4074
[2020-10-14 01:20:49,525 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:20:49,552 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4074 states.
[2020-10-14 01:20:49,707 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 4004.
[2020-10-14 01:20:49,708 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4004 states.
[2020-10-14 01:20:49,727 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 6504 transitions.
[2020-10-14 01:20:49,729 INFO  L78                 Accepts]: Start accepts. Automaton has 4004 states and 6504 transitions. Word has length 1711
[2020-10-14 01:20:49,733 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:20:49,733 INFO  L479      AbstractCegarLoop]: Abstraction has 4004 states and 6504 transitions.
[2020-10-14 01:20:49,734 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-14 01:20:49,734 INFO  L276                IsEmpty]: Start isEmpty. Operand 4004 states and 6504 transitions.
[2020-10-14 01:20:49,816 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1723
[2020-10-14 01:20:49,816 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:20:49,817 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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]
[2020-10-14 01:20:49,818 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-14 01:20:49,818 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:20:49,818 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:20:49,820 INFO  L82        PathProgramCache]: Analyzing trace with hash -1647134945, now seen corresponding path program 1 times
[2020-10-14 01:20:49,820 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:20:49,820 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480336123]
[2020-10-14 01:20:49,821 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:20:50,324 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:50,663 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:51,292 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:55,413 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:55,414 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1746
[2020-10-14 01:20:55,414 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:20:55,414 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5085
[2020-10-14 01:20:55,415 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:55,415 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:55,415 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:20:55,416 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:20:55,416 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-14 01:20:55,416 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:20:56,331 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:20:56,335 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:56,337 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:56,342 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:56,342 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:20:56,342 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:20:56,342 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-14 01:20:56,343 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:56,343 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:56,343 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:20:56,343 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:20:56,344 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:20:56,344 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:20:56,372 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:20:56,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:56,379 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:56,402 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:56,402 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-14 01:20:56,403 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:20:56,403 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 25
[2020-10-14 01:20:56,403 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:56,403 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:56,404 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:20:56,404 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:20:56,404 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-10-14 01:20:56,404 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:20:57,465 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:20:57,466 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480336123]
[2020-10-14 01:20:57,466 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:20:57,467 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:20:57,467 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846185433]
[2020-10-14 01:20:57,471 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:20:57,471 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:20:57,472 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:20:57,472 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:20:57,472 INFO  L87              Difference]: Start difference. First operand 4004 states and 6504 transitions. Second operand 7 states.
[2020-10-14 01:21:18,656 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:21:18,656 INFO  L93              Difference]: Finished difference Result 11760 states and 19263 transitions.
[2020-10-14 01:21:18,660 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-14 01:21:18,661 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1722
[2020-10-14 01:21:18,661 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:21:18,700 INFO  L225             Difference]: With dead ends: 11760
[2020-10-14 01:21:18,701 INFO  L226             Difference]: Without dead ends: 7762
[2020-10-14 01:21:18,710 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:21:18,720 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7762 states.
[2020-10-14 01:21:18,881 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7762 to 7656.
[2020-10-14 01:21:18,881 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7656 states.
[2020-10-14 01:21:18,903 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7656 states to 7656 states and 11242 transitions.
[2020-10-14 01:21:18,903 INFO  L78                 Accepts]: Start accepts. Automaton has 7656 states and 11242 transitions. Word has length 1722
[2020-10-14 01:21:18,904 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:21:18,904 INFO  L479      AbstractCegarLoop]: Abstraction has 7656 states and 11242 transitions.
[2020-10-14 01:21:18,904 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:21:18,904 INFO  L276                IsEmpty]: Start isEmpty. Operand 7656 states and 11242 transitions.
[2020-10-14 01:21:18,971 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1734
[2020-10-14 01:21:18,971 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:21:18,973 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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]
[2020-10-14 01:21:18,973 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-14 01:21:18,973 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:21:18,974 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:21:18,974 INFO  L82        PathProgramCache]: Analyzing trace with hash -1803327281, now seen corresponding path program 1 times
[2020-10-14 01:21:18,975 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:21:18,975 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427777103]
[2020-10-14 01:21:18,975 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:21:19,331 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:19,549 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:20,240 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:22,302 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:24,496 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:24,496 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1757
[2020-10-14 01:21:24,496 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:21:24,496 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5162
[2020-10-14 01:21:24,496 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:24,496 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:24,497 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:21:24,497 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:21:24,497 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-10-14 01:21:24,497 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:21:24,814 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:21:24,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:24,819 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:24,825 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:24,826 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:21:24,826 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:24,827 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-14 01:21:24,827 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:24,827 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:24,828 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:21:24,828 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:21:24,828 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:21:24,828 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:24,852 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:21:24,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:24,863 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:24,910 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:24,911 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-14 01:21:24,911 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:24,911 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 51
[2020-10-14 01:21:24,912 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:24,912 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:24,913 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:21:24,913 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:21:24,913 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-14 01:21:24,914 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:26,263 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:21:26,263 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427777103]
[2020-10-14 01:21:26,264 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:21:26,264 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:21:26,264 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425031076]
[2020-10-14 01:21:26,266 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:21:26,266 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:21:26,266 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:21:26,267 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:21:26,268 INFO  L87              Difference]: Start difference. First operand 7656 states and 11242 transitions. Second operand 7 states.
[2020-10-14 01:21:47,305 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:21:47,306 INFO  L93              Difference]: Finished difference Result 19291 states and 27878 transitions.
[2020-10-14 01:21:47,307 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-14 01:21:47,307 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1733
[2020-10-14 01:21:47,307 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:21:47,359 INFO  L225             Difference]: With dead ends: 19291
[2020-10-14 01:21:47,360 INFO  L226             Difference]: Without dead ends: 11641
[2020-10-14 01:21:47,378 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-14 01:21:47,393 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11641 states.
[2020-10-14 01:21:47,643 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11641 to 11489.
[2020-10-14 01:21:47,643 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11489 states.
[2020-10-14 01:21:47,666 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11489 states to 11489 states and 15584 transitions.
[2020-10-14 01:21:47,667 INFO  L78                 Accepts]: Start accepts. Automaton has 11489 states and 15584 transitions. Word has length 1733
[2020-10-14 01:21:47,667 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:21:47,668 INFO  L479      AbstractCegarLoop]: Abstraction has 11489 states and 15584 transitions.
[2020-10-14 01:21:47,668 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:21:47,668 INFO  L276                IsEmpty]: Start isEmpty. Operand 11489 states and 15584 transitions.
[2020-10-14 01:21:47,728 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1766
[2020-10-14 01:21:47,728 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:21:47,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-14 01:21:47,731 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-14 01:21:47,731 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:21:47,731 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:21:47,732 INFO  L82        PathProgramCache]: Analyzing trace with hash -1587181923, now seen corresponding path program 1 times
[2020-10-14 01:21:47,740 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:21:47,741 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735831580]
[2020-10-14 01:21:47,742 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:21:48,007 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:48,054 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:49,957 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:53,132 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:53,132 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1789
[2020-10-14 01:21:53,133 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:21:53,133 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5121
[2020-10-14 01:21:53,133 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:53,133 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:53,134 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:21:53,134 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:21:53,134 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 60
[2020-10-14 01:21:53,134 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:21:53,439 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:21:53,442 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:53,443 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:53,447 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:53,448 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:21:53,448 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:53,448 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-14 01:21:53,448 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:53,449 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:53,449 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:21:53,449 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:21:53,449 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:21:53,449 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:21:53,482 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:21:53,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:53,503 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:53,574 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:53,574 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 55
[2020-10-14 01:21:53,574 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:53,574 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 80
[2020-10-14 01:21:53,575 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:53,575 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:53,575 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:21:53,575 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:21:53,575 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 55
[2020-10-14 01:21:53,576 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:21:54,739 INFO  L134       CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:21:54,739 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735831580]
[2020-10-14 01:21:54,740 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:21:54,740 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-10-14 01:21:54,740 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074425689]
[2020-10-14 01:21:54,742 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-14 01:21:54,742 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:21:54,743 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-14 01:21:54,743 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-14 01:21:54,743 INFO  L87              Difference]: Start difference. First operand 11489 states and 15584 transitions. Second operand 8 states.
[2020-10-14 01:22:29,233 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:22:29,234 INFO  L93              Difference]: Finished difference Result 45897 states and 66510 transitions.
[2020-10-14 01:22:29,236 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-14 01:22:29,237 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1765
[2020-10-14 01:22:29,237 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:22:29,368 INFO  L225             Difference]: With dead ends: 45897
[2020-10-14 01:22:29,368 INFO  L226             Difference]: Without dead ends: 34414
[2020-10-14 01:22:29,407 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-14 01:22:29,452 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34414 states.
[2020-10-14 01:22:30,178 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34414 to 34305.
[2020-10-14 01:22:30,178 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34305 states.
[2020-10-14 01:22:30,259 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34305 states to 34305 states and 45996 transitions.
[2020-10-14 01:22:30,259 INFO  L78                 Accepts]: Start accepts. Automaton has 34305 states and 45996 transitions. Word has length 1765
[2020-10-14 01:22:30,260 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:22:30,260 INFO  L479      AbstractCegarLoop]: Abstraction has 34305 states and 45996 transitions.
[2020-10-14 01:22:30,260 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-14 01:22:30,260 INFO  L276                IsEmpty]: Start isEmpty. Operand 34305 states and 45996 transitions.
[2020-10-14 01:22:30,383 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1840
[2020-10-14 01:22:30,384 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:22:30,385 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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]
[2020-10-14 01:22:30,386 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-14 01:22:30,386 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:22:30,386 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:22:30,387 INFO  L82        PathProgramCache]: Analyzing trace with hash 396091236, now seen corresponding path program 1 times
[2020-10-14 01:22:30,387 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:22:30,387 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855098614]
[2020-10-14 01:22:30,388 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:22:30,570 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:30,697 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:31,126 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:35,680 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:35,680 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1865
[2020-10-14 01:22:35,680 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:22:35,680 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5103
[2020-10-14 01:22:35,680 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:35,681 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:35,681 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:22:35,681 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 123
[2020-10-14 01:22:35,681 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-10-14 01:22:35,681 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:22:36,006 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:22:36,008 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:36,009 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:36,012 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:36,012 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:22:36,012 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:22:36,013 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-14 01:22:36,013 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:36,013 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:36,013 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:22:36,013 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:22:36,014 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:22:36,014 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:22:36,033 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:22:36,058 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:36,076 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:36,169 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:36,169 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 114
[2020-10-14 01:22:36,170 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:22:36,171 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 110
[2020-10-14 01:22:36,171 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:36,172 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:36,172 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:22:36,172 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:22:36,172 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 108
[2020-10-14 01:22:36,172 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:22:36,213 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-10-14 01:22:36,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:36,222 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:36,241 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:36,242 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 16
[2020-10-14 01:22:36,242 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:22:36,242 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-10-14 01:22:36,242 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:36,242 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:36,243 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:22:36,243 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:22:36,244 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-10-14 01:22:36,244 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:22:37,702 INFO  L134       CoverageAnalysis]: Checked inductivity of 133 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-14 01:22:37,703 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855098614]
[2020-10-14 01:22:37,703 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:22:37,703 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-14 01:22:37,704 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521898764]
[2020-10-14 01:22:37,705 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:22:37,706 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:22:37,706 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:22:37,706 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:22:37,706 INFO  L87              Difference]: Start difference. First operand 34305 states and 45996 transitions. Second operand 7 states.
[2020-10-14 01:23:04,215 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:23:04,215 INFO  L93              Difference]: Finished difference Result 92862 states and 142347 transitions.
[2020-10-14 01:23:04,217 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:23:04,217 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1839
[2020-10-14 01:23:04,217 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:23:04,436 INFO  L225             Difference]: With dead ends: 92862
[2020-10-14 01:23:04,436 INFO  L226             Difference]: Without dead ends: 58563
[2020-10-14 01:23:04,592 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:23:04,660 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 58563 states.
[2020-10-14 01:23:05,895 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 58563 to 57368.
[2020-10-14 01:23:05,897 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 57368 states.
[2020-10-14 01:23:06,008 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 57368 states to 57368 states and 75717 transitions.
[2020-10-14 01:23:06,009 INFO  L78                 Accepts]: Start accepts. Automaton has 57368 states and 75717 transitions. Word has length 1839
[2020-10-14 01:23:06,009 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:23:06,009 INFO  L479      AbstractCegarLoop]: Abstraction has 57368 states and 75717 transitions.
[2020-10-14 01:23:06,010 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:23:06,010 INFO  L276                IsEmpty]: Start isEmpty. Operand 57368 states and 75717 transitions.
[2020-10-14 01:23:06,157 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1865
[2020-10-14 01:23:06,158 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:23:06,160 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:23:06,160 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-14 01:23:06,160 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:23:06,160 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:23:06,161 INFO  L82        PathProgramCache]: Analyzing trace with hash -78978942, now seen corresponding path program 1 times
[2020-10-14 01:23:06,161 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:23:06,162 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352735920]
[2020-10-14 01:23:06,162 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:23:06,543 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:06,780 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:08,965 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:11,608 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:11,608 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1890
[2020-10-14 01:23:11,608 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:23:11,608 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5060
[2020-10-14 01:23:11,609 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:11,609 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:11,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-14 01:23:11,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 165
[2020-10-14 01:23:11,609 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1724
[2020-10-14 01:23:11,609 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:23:12,664 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:23:12,666 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:12,667 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:12,670 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:12,670 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:23:12,670 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:12,670 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-14 01:23:12,671 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:12,671 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:12,671 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:23:12,671 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:23:12,671 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:23:12,672 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:23:12,692 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:23:12,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:12,702 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:12,733 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:12,734 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 114
[2020-10-14 01:23:12,734 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:12,734 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 32
[2020-10-14 01:23:12,734 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:12,734 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:12,735 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:23:12,735 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:23:12,735 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:23:12,735 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:23:12,769 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-10-14 01:23:12,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:12,786 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:12,817 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:12,818 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-14 01:23:12,818 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:12,818 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 37
[2020-10-14 01:23:12,819 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:12,819 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:12,819 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:23:12,819 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:23:12,819 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 35
[2020-10-14 01:23:12,820 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:23:15,266 INFO  L134       CoverageAnalysis]: Checked inductivity of 187 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2020-10-14 01:23:15,266 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352735920]
[2020-10-14 01:23:15,266 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:23:15,267 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-10-14 01:23:15,267 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23371325]
[2020-10-14 01:23:15,270 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-14 01:23:15,270 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:23:15,270 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-14 01:23:15,271 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:23:15,271 INFO  L87              Difference]: Start difference. First operand 57368 states and 75717 transitions. Second operand 5 states.
[2020-10-14 01:23:41,745 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:23:41,745 INFO  L93              Difference]: Finished difference Result 165103 states and 227411 transitions.
[2020-10-14 01:23:41,746 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 01:23:41,746 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1864
[2020-10-14 01:23:41,749 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:23:42,167 INFO  L225             Difference]: With dead ends: 165103
[2020-10-14 01:23:42,167 INFO  L226             Difference]: Without dead ends: 107741
[2020-10-14 01:23:42,272 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-14 01:23:42,377 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 107741 states.
[2020-10-14 01:23:44,056 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 107741 to 107554.
[2020-10-14 01:23:44,058 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 107554 states.
[2020-10-14 01:23:44,311 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 107554 states to 107554 states and 140355 transitions.
[2020-10-14 01:23:44,314 INFO  L78                 Accepts]: Start accepts. Automaton has 107554 states and 140355 transitions. Word has length 1864
[2020-10-14 01:23:44,316 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:23:44,316 INFO  L479      AbstractCegarLoop]: Abstraction has 107554 states and 140355 transitions.
[2020-10-14 01:23:44,316 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-14 01:23:44,317 INFO  L276                IsEmpty]: Start isEmpty. Operand 107554 states and 140355 transitions.
[2020-10-14 01:23:44,535 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1867
[2020-10-14 01:23:44,536 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:23:44,537 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2020-10-14 01:23:44,537 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-10-14 01:23:44,537 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:23:44,538 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:23:44,539 INFO  L82        PathProgramCache]: Analyzing trace with hash -2035187898, now seen corresponding path program 1 times
[2020-10-14 01:23:44,539 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:23:44,539 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464192608]
[2020-10-14 01:23:44,540 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:23:44,662 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:44,720 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:45,145 FATAL L256   erpolLogProxyWrapper]: Now shrinking...