/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_label05.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-14 01:13:27,294 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-14 01:13:27,297 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-14 01:13:27,339 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-14 01:13:27,339 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-14 01:13:27,346 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-14 01:13:27,347 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-14 01:13:27,353 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-14 01:13:27,355 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-14 01:13:27,358 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-14 01:13:27,359 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-14 01:13:27,361 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-14 01:13:27,362 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-14 01:13:27,365 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-14 01:13:27,368 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-14 01:13:27,370 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-14 01:13:27,371 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-14 01:13:27,374 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-14 01:13:27,376 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-14 01:13:27,381 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-14 01:13:27,384 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-14 01:13:27,385 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-14 01:13:27,386 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-14 01:13:27,386 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-14 01:13:27,399 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-14 01:13:27,399 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-14 01:13:27,399 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-14 01:13:27,400 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-14 01:13:27,401 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-14 01:13:27,405 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-14 01:13:27,405 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-14 01:13:27,406 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-14 01:13:27,409 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-14 01:13:27,410 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-14 01:13:27,411 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-14 01:13:27,411 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-14 01:13:27,412 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-14 01:13:27,412 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-14 01:13:27,412 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-14 01:13:27,413 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-14 01:13:27,413 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-14 01:13:27,414 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 01:13:27,450 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-14 01:13:27,451 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-14 01:13:27,453 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-14 01:13:27,453 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-14 01:13:27,453 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-14 01:13:27,453 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-14 01:13:27,454 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-14 01:13:27,454 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-14 01:13:27,454 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-14 01:13:27,454 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-14 01:13:27,456 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-14 01:13:27,456 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-14 01:13:27,456 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-14 01:13:27,456 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-14 01:13:27,457 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-14 01:13:27,457 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-14 01:13:27,457 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-14 01:13:27,458 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-14 01:13:27,458 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-14 01:13:27,458 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-14 01:13:27,458 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-14 01:13:27,459 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:13:27,459 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-14 01:13:27,459 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-14 01:13:27,459 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-14 01:13:27,459 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-14 01:13:27,460 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-14 01:13:27,460 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-14 01:13:27,460 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-14 01:13:27,460 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 01:13:27,747 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-14 01:13:27,759 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-14 01:13:27,762 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-14 01:13:27,764 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-14 01:13:27,764 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-14 01:13:27,765 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label05.c
[2020-10-14 01:13:27,824 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d143f9ddc/225a10fa715d449493d65987be3c0a71/FLAG27da703d1
[2020-10-14 01:13:28,730 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-14 01:13:28,731 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label05.c
[2020-10-14 01:13:28,777 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d143f9ddc/225a10fa715d449493d65987be3c0a71/FLAG27da703d1
[2020-10-14 01:13:29,167 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d143f9ddc/225a10fa715d449493d65987be3c0a71
[2020-10-14 01:13:29,177 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-14 01:13:29,180 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-14 01:13:29,183 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-14 01:13:29,183 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-14 01:13:29,187 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-14 01:13:29,188 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:13:29" (1/1) ...
[2020-10-14 01:13:29,192 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8d9ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:13:29, skipping insertion in model container
[2020-10-14 01:13:29,193 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:13:29" (1/1) ...
[2020-10-14 01:13:29,202 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-14 01:13:29,465 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-14 01:13:31,809 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:13:31,817 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-14 01:13:33,032 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:13:33,152 INFO  L208         MainTranslator]: Completed translation
[2020-10-14 01:13:33,154 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:13:33 WrapperNode
[2020-10-14 01:13:33,165 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-14 01:13:33,166 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-14 01:13:33,166 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-14 01:13:33,166 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-14 01:13:33,186 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:13:33" (1/1) ...
[2020-10-14 01:13:33,189 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:13:33" (1/1) ...
[2020-10-14 01:13:33,302 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:13:33" (1/1) ...
[2020-10-14 01:13:33,303 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:13:33" (1/1) ...
[2020-10-14 01:13:33,498 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:13:33" (1/1) ...
[2020-10-14 01:13:33,575 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:13:33" (1/1) ...
[2020-10-14 01:13:33,653 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:13:33" (1/1) ...
[2020-10-14 01:13:33,841 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-14 01:13:33,841 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-14 01:13:33,842 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-14 01:13:33,842 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-14 01:13:33,843 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:13:33" (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 01:13:33,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-14 01:13:33,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-14 01:13:33,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-14 01:13:33,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-14 01:13:33,922 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-14 01:13:33,922 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-14 01:13:33,922 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-14 01:13:33,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-14 01:13:33,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-14 01:13:33,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-14 01:13:33,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-14 01:13:33,924 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-14 01:13:33,925 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-14 01:13:33,925 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-14 01:13:33,925 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-14 01:13:33,928 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-14 01:13:33,928 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-14 01:13:33,928 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-14 01:13:33,929 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-14 01:13:33,929 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-14 01:13:33,929 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-14 01:13:33,930 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-14 01:13:33,930 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-14 01:13:33,930 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-14 01:13:33,931 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-14 01:13:41,906 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-14 01:13:41,907 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-14 01:13:41,926 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:13:41 BoogieIcfgContainer
[2020-10-14 01:13:41,926 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-14 01:13:41,928 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-14 01:13:41,928 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-14 01:13:41,932 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-14 01:13:41,932 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:13:29" (1/3) ...
[2020-10-14 01:13:41,933 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d56d4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:13:41, skipping insertion in model container
[2020-10-14 01:13:41,934 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:13:33" (2/3) ...
[2020-10-14 01:13:41,934 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d56d4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:13:41, skipping insertion in model container
[2020-10-14 01:13:41,934 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:13:41" (3/3) ...
[2020-10-14 01:13:41,938 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label05.c
[2020-10-14 01:13:41,949 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-14 01:13:41,958 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-14 01:13:41,972 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-14 01:13:42,003 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-14 01:13:42,004 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-14 01:13:42,004 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-14 01:13:42,004 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-14 01:13:42,004 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-14 01:13:42,004 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-14 01:13:42,004 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-14 01:13:42,005 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-14 01:13:42,052 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-14 01:13:42,151 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1708
[2020-10-14 01:13:42,151 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:13:42,154 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]
[2020-10-14 01:13:42,155 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:13:42,160 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:13:42,162 INFO  L82        PathProgramCache]: Analyzing trace with hash -1758405248, now seen corresponding path program 1 times
[2020-10-14 01:13:42,169 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:13:42,170 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633465645]
[2020-10-14 01:13:42,171 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:13:43,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:13:43,899 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:13:48,489 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:13:48,490 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1729
[2020-10-14 01:13:48,490 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:13:48,490 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5158
[2020-10-14 01:13:48,493 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:13:48,493 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:13:48,493 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-14 01:13:48,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:13:48,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1723
[2020-10-14 01:13:48,494 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 01:13:50,044 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:13:50,049 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:13:50,052 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:13:50,059 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:13:50,060 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:13:50,060 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:13:50,060 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-14 01:13:50,060 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:13:50,060 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:13:50,061 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:13:50,061 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:13:50,061 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:13:50,061 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:13:52,342 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 01:13:52,343 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633465645]
[2020-10-14 01:13:52,345 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:13:52,345 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-14 01:13:52,346 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119051681]
[2020-10-14 01:13:52,357 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-14 01:13:52,357 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:13:52,369 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-14 01:13:52,370 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:13:52,372 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 5 states.
[2020-10-14 01:14:10,294 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:14:10,295 INFO  L93              Difference]: Finished difference Result 6310 states and 11850 transitions.
[2020-10-14 01:14:10,295 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 01:14:10,298 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1707
[2020-10-14 01:14:10,306 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:14:10,353 INFO  L225             Difference]: With dead ends: 6310
[2020-10-14 01:14:10,353 INFO  L226             Difference]: Without dead ends: 4024
[2020-10-14 01:14:10,366 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-14 01:14:10,393 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4024 states.
[2020-10-14 01:14:10,607 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3997.
[2020-10-14 01:14:10,608 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3997 states.
[2020-10-14 01:14:10,631 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6427 transitions.
[2020-10-14 01:14:10,633 INFO  L78                 Accepts]: Start accepts. Automaton has 3997 states and 6427 transitions. Word has length 1707
[2020-10-14 01:14:10,639 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:14:10,639 INFO  L479      AbstractCegarLoop]: Abstraction has 3997 states and 6427 transitions.
[2020-10-14 01:14:10,639 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-14 01:14:10,639 INFO  L276                IsEmpty]: Start isEmpty. Operand 3997 states and 6427 transitions.
[2020-10-14 01:14:10,754 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1717
[2020-10-14 01:14:10,755 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:14:10,756 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]
[2020-10-14 01:14:10,757 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-14 01:14:10,757 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:14:10,758 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:14:10,759 INFO  L82        PathProgramCache]: Analyzing trace with hash 1296410027, now seen corresponding path program 1 times
[2020-10-14 01:14:10,760 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:14:10,760 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395114165]
[2020-10-14 01:14:10,761 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:14:10,912 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:10,944 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:13,390 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:16,187 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:16,188 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1740
[2020-10-14 01:14:16,191 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:14:16,191 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5271
[2020-10-14 01:14:16,192 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:16,192 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:16,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:14:16,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:14:16,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-14 01:14:16,193 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:14:18,097 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:14:18,101 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:18,105 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:18,116 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:18,116 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:14:18,117 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:14:18,118 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-10-14 01:14:18,118 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:18,118 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:18,124 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:14:18,124 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:14:18,124 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:14:18,125 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 6
[2020-10-14 01:14:18,149 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:14:18,152 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:18,154 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:18,171 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:18,172 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-14 01:14:18,172 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:14:18,172 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-10-14 01:14:18,173 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:18,173 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:18,173 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:14:18,173 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:14:18,174 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-14 01:14:18,174 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:14:19,355 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 01:14:19,356 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395114165]
[2020-10-14 01:14:19,356 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:14:19,356 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:14:19,357 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461814222]
[2020-10-14 01:14:19,361 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:14:19,361 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:14:19,361 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:14:19,362 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:14:19,362 INFO  L87              Difference]: Start difference. First operand 3997 states and 6427 transitions. Second operand 7 states.
[2020-10-14 01:14:42,561 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:14:42,561 INFO  L93              Difference]: Finished difference Result 11928 states and 19287 transitions.
[2020-10-14 01:14:42,563 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:14:42,563 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1716
[2020-10-14 01:14:42,564 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:14:42,605 INFO  L225             Difference]: With dead ends: 11928
[2020-10-14 01:14:42,606 INFO  L226             Difference]: Without dead ends: 7937
[2020-10-14 01:14:42,617 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 01:14:42,627 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7937 states.
[2020-10-14 01:14:42,803 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 7744.
[2020-10-14 01:14:42,803 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7744 states.
[2020-10-14 01:14:42,828 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7744 states to 7744 states and 11187 transitions.
[2020-10-14 01:14:42,828 INFO  L78                 Accepts]: Start accepts. Automaton has 7744 states and 11187 transitions. Word has length 1716
[2020-10-14 01:14:42,829 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:14:42,829 INFO  L479      AbstractCegarLoop]: Abstraction has 7744 states and 11187 transitions.
[2020-10-14 01:14:42,829 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:14:42,829 INFO  L276                IsEmpty]: Start isEmpty. Operand 7744 states and 11187 transitions.
[2020-10-14 01:14:42,885 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1719
[2020-10-14 01:14:42,885 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:14:42,887 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]
[2020-10-14 01:14:42,887 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-14 01:14:42,887 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:14:42,888 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:14:42,888 INFO  L82        PathProgramCache]: Analyzing trace with hash -491988913, now seen corresponding path program 1 times
[2020-10-14 01:14:42,889 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:14:42,889 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777326898]
[2020-10-14 01:14:42,890 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:14:43,299 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:43,593 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:44,216 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:48,330 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:48,331 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1742
[2020-10-14 01:14:48,331 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:14:48,332 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5028
[2020-10-14 01:14:48,332 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:48,332 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:48,333 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:14:48,333 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:14:48,333 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-14 01:14:48,334 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:14:49,474 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:14:49,476 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:49,477 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:49,485 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:49,485 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:14:49,485 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:14:49,485 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-14 01:14:49,486 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:49,486 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:49,486 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:14:49,486 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:14:49,486 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:14:49,486 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:14:49,515 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:14:49,520 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:49,529 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:49,558 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:49,558 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-14 01:14:49,559 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:14:49,559 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 37
[2020-10-14 01:14:49,559 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:49,559 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:49,559 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:14:49,560 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:14:49,560 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-10-14 01:14:49,560 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:14:50,664 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 01:14:50,664 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777326898]
[2020-10-14 01:14:50,664 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:14:50,665 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:14:50,665 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321818351]
[2020-10-14 01:14:50,667 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:14:50,667 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:14:50,668 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:14:50,668 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:14:50,668 INFO  L87              Difference]: Start difference. First operand 7744 states and 11187 transitions. Second operand 7 states.
[2020-10-14 01:15:13,921 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:15:13,921 INFO  L93              Difference]: Finished difference Result 23427 states and 35137 transitions.
[2020-10-14 01:15:13,922 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:15:13,922 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1718
[2020-10-14 01:15:13,922 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:15:13,999 INFO  L225             Difference]: With dead ends: 23427
[2020-10-14 01:15:13,999 INFO  L226             Difference]: Without dead ends: 15689
[2020-10-14 01:15:14,024 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 01:15:14,044 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15689 states.
[2020-10-14 01:15:14,422 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15689 to 15265.
[2020-10-14 01:15:14,422 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15265 states.
[2020-10-14 01:15:14,455 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15265 states to 15265 states and 19804 transitions.
[2020-10-14 01:15:14,455 INFO  L78                 Accepts]: Start accepts. Automaton has 15265 states and 19804 transitions. Word has length 1718
[2020-10-14 01:15:14,456 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:15:14,456 INFO  L479      AbstractCegarLoop]: Abstraction has 15265 states and 19804 transitions.
[2020-10-14 01:15:14,456 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:15:14,456 INFO  L276                IsEmpty]: Start isEmpty. Operand 15265 states and 19804 transitions.
[2020-10-14 01:15:14,524 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1730
[2020-10-14 01:15:14,524 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:15:14,526 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]
[2020-10-14 01:15:14,526 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-14 01:15:14,527 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:15:14,527 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:15:14,528 INFO  L82        PathProgramCache]: Analyzing trace with hash 1868161535, now seen corresponding path program 1 times
[2020-10-14 01:15:14,528 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:15:14,528 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72932236]
[2020-10-14 01:15:14,529 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:15:14,957 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:15,410 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:16,080 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:16,573 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:20,063 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:20,064 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1753
[2020-10-14 01:15:20,064 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:15:20,064 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5102
[2020-10-14 01:15:20,064 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:20,064 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:20,065 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:15:20,065 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:15:20,065 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-10-14 01:15:20,065 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:15:20,382 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:15:20,384 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:20,386 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:20,391 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:20,391 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:15:20,391 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:20,392 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-14 01:15:20,392 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:20,392 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:20,392 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:15:20,392 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:15:20,393 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:15:20,393 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:15:20,411 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:15:20,415 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:20,419 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:20,452 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:20,452 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-14 01:15:20,453 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:20,453 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 36
[2020-10-14 01:15:20,453 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:20,453 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:20,453 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:15:20,454 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:15:20,454 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-14 01:15:20,454 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:15:21,979 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 01:15:21,980 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72932236]
[2020-10-14 01:15:21,980 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:15:21,981 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:15:21,981 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464916473]
[2020-10-14 01:15:21,983 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:15:21,983 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:15:21,983 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:15:21,984 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:15:21,984 INFO  L87              Difference]: Start difference. First operand 15265 states and 19804 transitions. Second operand 7 states.
[2020-10-14 01:15:43,608 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:15:43,608 INFO  L93              Difference]: Finished difference Result 38539 states and 49733 transitions.
[2020-10-14 01:15:43,609 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:15:43,609 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1729
[2020-10-14 01:15:43,610 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:15:43,685 INFO  L225             Difference]: With dead ends: 38539
[2020-10-14 01:15:43,686 INFO  L226             Difference]: Without dead ends: 23280
[2020-10-14 01:15:43,728 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:15:43,757 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23280 states.
[2020-10-14 01:15:44,137 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23280 to 22830.
[2020-10-14 01:15:44,138 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22830 states.
[2020-10-14 01:15:44,194 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22830 states to 22830 states and 28188 transitions.
[2020-10-14 01:15:44,194 INFO  L78                 Accepts]: Start accepts. Automaton has 22830 states and 28188 transitions. Word has length 1729
[2020-10-14 01:15:44,195 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:15:44,195 INFO  L479      AbstractCegarLoop]: Abstraction has 22830 states and 28188 transitions.
[2020-10-14 01:15:44,195 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:15:44,195 INFO  L276                IsEmpty]: Start isEmpty. Operand 22830 states and 28188 transitions.
[2020-10-14 01:15:44,284 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1843
[2020-10-14 01:15:44,284 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:15:44,286 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-10-14 01:15:44,286 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-14 01:15:44,287 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:15:44,287 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:15:44,288 INFO  L82        PathProgramCache]: Analyzing trace with hash -159113760, now seen corresponding path program 1 times
[2020-10-14 01:15:44,288 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:15:44,288 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150735938]
[2020-10-14 01:15:44,289 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:15:44,999 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:45,345 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:45,997 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:46,464 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:50,041 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:50,041 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1868
[2020-10-14 01:15:50,042 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:15:50,042 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5031
[2020-10-14 01:15:50,042 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:50,042 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:50,042 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:15:50,042 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 123
[2020-10-14 01:15:50,042 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 25
[2020-10-14 01:15:50,042 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:15:50,687 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:15:50,689 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:50,691 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:50,694 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:50,694 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:15:50,694 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:50,695 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-14 01:15:50,695 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:50,695 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:50,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:15:50,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:15:50,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:15:50,697 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:15:50,723 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:15:50,758 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:50,785 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:50,871 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:50,876 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 114
[2020-10-14 01:15:50,876 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:50,876 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 111
[2020-10-14 01:15:50,876 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:50,877 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:50,877 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:15:50,877 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:15:50,877 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 108
[2020-10-14 01:15:50,877 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:15:50,930 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-10-14 01:15:50,939 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:50,944 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:50,980 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:50,980 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-14 01:15:50,981 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:50,981 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 40
[2020-10-14 01:15:50,981 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:50,981 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:50,983 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:15:50,984 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:15:50,984 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-14 01:15:50,984 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 01:15:52,676 INFO  L134       CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-14 01:15:52,677 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150735938]
[2020-10-14 01:15:52,677 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:15:52,677 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-14 01:15:52,677 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430384106]
[2020-10-14 01:15:52,679 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-14 01:15:52,679 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:15:52,679 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-14 01:15:52,680 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-14 01:15:52,680 INFO  L87              Difference]: Start difference. First operand 22830 states and 28188 transitions. Second operand 8 states.
[2020-10-14 01:16:30,482 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:16:30,483 INFO  L93              Difference]: Finished difference Result 59388 states and 79320 transitions.
[2020-10-14 01:16:30,484 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-14 01:16:30,484 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1842
[2020-10-14 01:16:30,485 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:16:30,600 INFO  L225             Difference]: With dead ends: 59388
[2020-10-14 01:16:30,601 INFO  L226             Difference]: Without dead ends: 38294
[2020-10-14 01:16:30,665 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-14 01:16:30,712 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 38294 states.
[2020-10-14 01:16:31,252 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 38294 to 37954.
[2020-10-14 01:16:31,252 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 37954 states.
[2020-10-14 01:16:31,318 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37954 states to 37954 states and 47668 transitions.
[2020-10-14 01:16:31,319 INFO  L78                 Accepts]: Start accepts. Automaton has 37954 states and 47668 transitions. Word has length 1842
[2020-10-14 01:16:31,320 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:16:31,320 INFO  L479      AbstractCegarLoop]: Abstraction has 37954 states and 47668 transitions.
[2020-10-14 01:16:31,320 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-14 01:16:31,320 INFO  L276                IsEmpty]: Start isEmpty. Operand 37954 states and 47668 transitions.
[2020-10-14 01:16:31,416 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1869
[2020-10-14 01:16:31,416 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:16:31,418 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:16:31,418 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-14 01:16:31,418 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:16:31,419 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:16:31,419 INFO  L82        PathProgramCache]: Analyzing trace with hash -1258082898, now seen corresponding path program 1 times
[2020-10-14 01:16:31,419 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:16:31,420 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628823085]
[2020-10-14 01:16:31,420 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:16:31,650 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:31,752 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:31,940 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:32,400 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:36,676 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:36,676 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1896
[2020-10-14 01:16:36,677 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:16:36,677 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5019
[2020-10-14 01:16:36,677 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:36,677 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:36,677 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:16:36,677 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 165
[2020-10-14 01:16:36,677 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-10-14 01:16:36,677 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:16:36,955 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:16:36,957 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:36,957 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:36,959 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:36,959 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:16:36,959 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:36,959 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-14 01:16:36,960 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:36,960 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:36,960 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:16:36,960 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:16:36,960 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:16:36,960 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:16:36,979 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:16:36,986 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:36,987 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:37,007 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:37,007 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 114
[2020-10-14 01:16:37,007 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:37,008 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-14 01:16:37,008 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:37,008 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:37,008 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:16:37,008 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:16:37,009 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:16:37,009 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:16:37,031 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-10-14 01:16:37,037 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:37,041 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:37,058 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:37,058 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-14 01:16:37,059 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:37,059 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-14 01:16:37,059 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:37,059 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:37,059 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:16:37,059 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:16:37,059 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 35
[2020-10-14 01:16:37,059 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:16:37,066 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2020-10-14 01:16:37,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:37,068 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:37,072 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:37,072 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-14 01:16:37,072 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:37,072 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-14 01:16:37,072 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:37,073 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:37,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:16:37,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:16:37,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-10-14 01:16:37,073 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:16:38,497 INFO  L134       CoverageAnalysis]: Checked inductivity of 208 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2020-10-14 01:16:38,497 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628823085]
[2020-10-14 01:16:38,498 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:16:38,498 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-14 01:16:38,498 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980860801]
[2020-10-14 01:16:38,501 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:16:38,502 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:16:38,502 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:16:38,502 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:16:38,502 INFO  L87              Difference]: Start difference. First operand 37954 states and 47668 transitions. Second operand 7 states.
[2020-10-14 01:17:04,699 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:17:04,699 INFO  L93              Difference]: Finished difference Result 104931 states and 138580 transitions.
[2020-10-14 01:17:04,705 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-14 01:17:04,706 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1868
[2020-10-14 01:17:04,706 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:17:05,025 INFO  L225             Difference]: With dead ends: 104931
[2020-10-14 01:17:05,026 INFO  L226             Difference]: Without dead ends: 68713
[2020-10-14 01:17:05,110 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 01:17:05,195 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 68713 states.
[2020-10-14 01:17:06,207 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 68713 to 63295.
[2020-10-14 01:17:06,208 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 63295 states.
[2020-10-14 01:17:06,310 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 63295 states to 63295 states and 80641 transitions.
[2020-10-14 01:17:06,310 INFO  L78                 Accepts]: Start accepts. Automaton has 63295 states and 80641 transitions. Word has length 1868
[2020-10-14 01:17:06,311 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:17:06,311 INFO  L479      AbstractCegarLoop]: Abstraction has 63295 states and 80641 transitions.
[2020-10-14 01:17:06,311 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:17:06,311 INFO  L276                IsEmpty]: Start isEmpty. Operand 63295 states and 80641 transitions.