/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 19:34:47,421 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-14 19:34:47,424 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-14 19:34:47,447 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-14 19:34:47,448 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-14 19:34:47,449 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-14 19:34:47,450 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-14 19:34:47,452 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-14 19:34:47,453 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-14 19:34:47,454 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-14 19:34:47,455 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-14 19:34:47,456 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-14 19:34:47,456 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-14 19:34:47,457 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-14 19:34:47,458 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-14 19:34:47,460 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-14 19:34:47,460 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-14 19:34:47,461 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-14 19:34:47,463 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-14 19:34:47,465 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-14 19:34:47,466 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-14 19:34:47,467 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-14 19:34:47,471 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-14 19:34:47,472 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-14 19:34:47,474 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-14 19:34:47,475 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-14 19:34:47,475 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-14 19:34:47,476 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-14 19:34:47,476 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-14 19:34:47,477 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-14 19:34:47,477 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-14 19:34:47,478 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-14 19:34:47,478 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-14 19:34:47,479 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-14 19:34:47,480 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-14 19:34:47,480 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-14 19:34:47,481 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-14 19:34:47,481 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-14 19:34:47,482 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-14 19:34:47,482 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-14 19:34:47,483 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-14 19:34:47,484 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 19:34:47,507 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-14 19:34:47,507 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-14 19:34:47,508 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-14 19:34:47,508 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-14 19:34:47,508 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-14 19:34:47,509 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-14 19:34:47,509 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-14 19:34:47,509 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-14 19:34:47,509 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-14 19:34:47,509 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-14 19:34:47,510 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-14 19:34:47,510 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-14 19:34:47,510 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-14 19:34:47,510 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-14 19:34:47,510 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-14 19:34:47,510 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-14 19:34:47,511 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-14 19:34:47,511 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-14 19:34:47,511 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-14 19:34:47,511 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-14 19:34:47,512 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-14 19:34:47,512 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 19:34:47,512 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-14 19:34:47,512 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-14 19:34:47,512 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-14 19:34:47,512 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-14 19:34:47,513 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-14 19:34:47,513 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-14 19:34:47,513 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-14 19:34:47,513 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true;
[2020-10-14 19:34:47,845 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-14 19:34:47,860 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-14 19:34:47,866 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-14 19:34:47,867 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-14 19:34:47,868 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-14 19:34:47,869 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label05.c
[2020-10-14 19:34:47,931 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c47922c5b/aa955860b47c439d8292214fa63365be/FLAGd61a472c5
[2020-10-14 19:34:48,833 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-14 19:34:48,834 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label05.c
[2020-10-14 19:34:48,876 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c47922c5b/aa955860b47c439d8292214fa63365be/FLAGd61a472c5
[2020-10-14 19:34:49,196 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c47922c5b/aa955860b47c439d8292214fa63365be
[2020-10-14 19:34:49,206 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-14 19:34:49,207 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-14 19:34:49,209 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-14 19:34:49,209 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-14 19:34:49,213 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-14 19:34:49,214 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:34:49" (1/1) ...
[2020-10-14 19:34:49,217 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d34280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:49, skipping insertion in model container
[2020-10-14 19:34:49,217 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:34:49" (1/1) ...
[2020-10-14 19:34:49,226 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-14 19:34:49,504 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-14 19:34:52,191 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 19:34:52,197 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-14 19:34:53,363 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 19:34:53,430 INFO  L208         MainTranslator]: Completed translation
[2020-10-14 19:34:53,431 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:53 WrapperNode
[2020-10-14 19:34:53,431 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-14 19:34:53,432 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-14 19:34:53,432 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-14 19:34:53,432 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-14 19:34:53,446 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:53" (1/1) ...
[2020-10-14 19:34:53,446 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:53" (1/1) ...
[2020-10-14 19:34:53,524 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:53" (1/1) ...
[2020-10-14 19:34:53,525 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:53" (1/1) ...
[2020-10-14 19:34:53,709 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:53" (1/1) ...
[2020-10-14 19:34:53,933 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:53" (1/1) ...
[2020-10-14 19:34:53,996 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:53" (1/1) ...
[2020-10-14 19:34:54,067 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-14 19:34:54,068 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-14 19:34:54,068 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-14 19:34:54,068 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-14 19:34:54,070 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:53" (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 19:34:54,157 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-14 19:34:54,157 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-14 19:34:54,157 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-14 19:34:54,157 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-14 19:34:54,158 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-14 19:34:54,158 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-14 19:34:54,158 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-14 19:34:54,160 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-14 19:34:54,160 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-14 19:34:54,160 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-14 19:34:54,160 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-14 19:34:54,161 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-14 19:34:54,161 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-14 19:34:54,161 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-14 19:34:54,161 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-14 19:34:54,162 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-14 19:34:54,162 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-14 19:34:54,163 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-14 19:34:54,163 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-14 19:34:54,163 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-14 19:34:54,163 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-14 19:34:54,164 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-14 19:34:54,164 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-14 19:34:54,164 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-14 19:34:54,164 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-14 19:35:02,111 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-14 19:35:02,112 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-14 19:35:02,128 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:35:02 BoogieIcfgContainer
[2020-10-14 19:35:02,128 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-14 19:35:02,130 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-14 19:35:02,130 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-14 19:35:02,133 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-14 19:35:02,134 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:34:49" (1/3) ...
[2020-10-14 19:35:02,135 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39590b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:35:02, skipping insertion in model container
[2020-10-14 19:35:02,135 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:53" (2/3) ...
[2020-10-14 19:35:02,135 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39590b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:35:02, skipping insertion in model container
[2020-10-14 19:35:02,135 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:35:02" (3/3) ...
[2020-10-14 19:35:02,137 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label05.c
[2020-10-14 19:35:02,148 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-14 19:35:02,158 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-14 19:35:02,172 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-14 19:35:02,205 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-14 19:35:02,205 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-14 19:35:02,205 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-14 19:35:02,206 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-14 19:35:02,206 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-14 19:35:02,206 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-14 19:35:02,206 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-14 19:35:02,206 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-14 19:35:02,261 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-14 19:35:02,373 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1708
[2020-10-14 19:35:02,373 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:35:02,376 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 19:35:02,377 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:35:02,384 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:35:02,385 INFO  L82        PathProgramCache]: Analyzing trace with hash -1758405248, now seen corresponding path program 1 times
[2020-10-14 19:35:02,393 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:35:02,393 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934793441]
[2020-10-14 19:35:02,394 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:35:03,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:35:04,002 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:35:08,570 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:35:08,570 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1729
[2020-10-14 19:35:08,571 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:35:08,571 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5104
[2020-10-14 19:35:08,573 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:35:08,573 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:35:08,574 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-14 19:35:08,574 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 19:35:08,574 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1723
[2020-10-14 19:35:08,574 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 19:35:09,906 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:35:09,915 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:35:09,918 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:35:09,930 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:35:09,930 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:35:09,931 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:35:09,931 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-14 19:35:09,931 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:35:09,931 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:35:09,931 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:35:09,932 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:35:09,932 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 19:35:09,932 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:35:12,143 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 19:35:12,144 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934793441]
[2020-10-14 19:35:12,145 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 19:35:12,146 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-14 19:35:12,147 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017185647]
[2020-10-14 19:35:12,157 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-14 19:35:12,158 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:35:12,170 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-14 19:35:12,171 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-14 19:35:12,173 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 5 states.
[2020-10-14 19:35:29,703 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 19:35:29,704 INFO  L93              Difference]: Finished difference Result 6310 states and 11850 transitions.
[2020-10-14 19:35:29,705 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 19:35:29,707 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1707
[2020-10-14 19:35:29,715 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 19:35:29,760 INFO  L225             Difference]: With dead ends: 6310
[2020-10-14 19:35:29,761 INFO  L226             Difference]: Without dead ends: 4024
[2020-10-14 19:35:29,775 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-14 19:35:29,802 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4024 states.
[2020-10-14 19:35:29,968 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3997.
[2020-10-14 19:35:29,970 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3997 states.
[2020-10-14 19:35:29,993 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6427 transitions.
[2020-10-14 19:35:29,995 INFO  L78                 Accepts]: Start accepts. Automaton has 3997 states and 6427 transitions. Word has length 1707
[2020-10-14 19:35:30,001 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 19:35:30,001 INFO  L479      AbstractCegarLoop]: Abstraction has 3997 states and 6427 transitions.
[2020-10-14 19:35:30,002 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-14 19:35:30,002 INFO  L276                IsEmpty]: Start isEmpty. Operand 3997 states and 6427 transitions.
[2020-10-14 19:35:30,220 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1717
[2020-10-14 19:35:30,221 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:35:30,222 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 19:35:30,223 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-14 19:35:30,223 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:35:30,223 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:35:30,225 INFO  L82        PathProgramCache]: Analyzing trace with hash 1296410027, now seen corresponding path program 1 times
[2020-10-14 19:35:30,226 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:35:30,226 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390926968]
[2020-10-14 19:35:30,227 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:35:30,360 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:35:30,406 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:35:32,653 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:35:35,372 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:35:35,372 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1740
[2020-10-14 19:35:35,373 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 19:35:35,373 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5009
[2020-10-14 19:35:35,374 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:35:35,374 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:35:35,374 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-14 19:35:35,374 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-14 19:35:35,375 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1720
[2020-10-14 19:35:35,375 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:35:36,724 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:35:36,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:35:36,734 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:35:36,741 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:35:36,741 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:35:36,741 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:35:36,742 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-14 19:35:36,742 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:35:36,745 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:35:36,745 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:35:36,745 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:35:36,746 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:35:36,746 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 19:35:36,775 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 19:35:36,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:35:36,785 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:35:36,799 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:35:36,800 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-14 19:35:36,800 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:35:36,800 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-14 19:35:36,801 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:35:36,801 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:35:36,801 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:35:36,802 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:35:36,802 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-14 19:35:36,802 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:35:39,775 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 19:35:39,776 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390926968]
[2020-10-14 19:35:39,776 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 19:35:39,777 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-10-14 19:35:39,777 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409593860]
[2020-10-14 19:35:39,781 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-14 19:35:39,782 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:35:39,782 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-14 19:35:39,782 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-14 19:35:39,782 INFO  L87              Difference]: Start difference. First operand 3997 states and 6427 transitions. Second operand 5 states.
[2020-10-14 19:35:59,703 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 19:35:59,704 INFO  L93              Difference]: Finished difference Result 11640 states and 18921 transitions.
[2020-10-14 19:35:59,705 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 19:35:59,705 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1716
[2020-10-14 19:35:59,709 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 19:35:59,747 INFO  L225             Difference]: With dead ends: 11640
[2020-10-14 19:35:59,747 INFO  L226             Difference]: Without dead ends: 7649
[2020-10-14 19:35:59,758 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 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 19:35:59,767 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7649 states.
[2020-10-14 19:35:59,915 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 7571.
[2020-10-14 19:35:59,915 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7571 states.
[2020-10-14 19:35:59,941 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7571 states to 7571 states and 10961 transitions.
[2020-10-14 19:35:59,941 INFO  L78                 Accepts]: Start accepts. Automaton has 7571 states and 10961 transitions. Word has length 1716
[2020-10-14 19:35:59,944 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 19:35:59,945 INFO  L479      AbstractCegarLoop]: Abstraction has 7571 states and 10961 transitions.
[2020-10-14 19:35:59,945 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-14 19:35:59,945 INFO  L276                IsEmpty]: Start isEmpty. Operand 7571 states and 10961 transitions.
[2020-10-14 19:36:00,067 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1719
[2020-10-14 19:36:00,067 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:36:00,069 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 19:36:00,069 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-14 19:36:00,069 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:36:00,070 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:36:00,070 INFO  L82        PathProgramCache]: Analyzing trace with hash -491988913, now seen corresponding path program 1 times
[2020-10-14 19:36:00,071 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:36:00,071 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862431557]
[2020-10-14 19:36:00,072 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:36:00,498 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:36:00,817 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:36:01,441 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:36:05,622 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:36:05,622 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1742
[2020-10-14 19:36:05,622 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 19:36:05,622 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5120
[2020-10-14 19:36:05,623 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:36:05,623 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:36:05,623 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-14 19:36:05,623 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-10-14 19:36:05,624 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1720
[2020-10-14 19:36:05,624 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:36:06,608 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:36:06,610 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:36:06,611 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:36:06,617 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:36:06,617 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:36:06,618 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:36:06,618 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-14 19:36:06,618 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:36:06,619 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:36:06,619 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:36:06,619 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:36:06,619 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:36:06,620 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:36:06,638 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 19:36:06,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:36:06,643 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:36:06,653 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:36:06,653 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-14 19:36:06,653 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:36:06,654 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-14 19:36:06,654 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:36:06,654 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:36:06,654 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:36:06,654 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:36:06,655 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-14 19:36:06,655 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:36:09,295 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 19:36:09,295 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862431557]
[2020-10-14 19:36:09,296 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 19:36:09,296 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-10-14 19:36:09,296 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803723136]
[2020-10-14 19:36:09,299 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-14 19:36:09,300 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:36:09,300 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-14 19:36:09,301 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-14 19:36:09,301 INFO  L87              Difference]: Start difference. First operand 7571 states and 10961 transitions. Second operand 5 states.
[2020-10-14 19:36:29,765 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 19:36:29,766 INFO  L93              Difference]: Finished difference Result 18762 states and 28067 transitions.
[2020-10-14 19:36:29,766 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 19:36:29,767 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1718
[2020-10-14 19:36:29,770 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 19:36:29,825 INFO  L225             Difference]: With dead ends: 18762
[2020-10-14 19:36:29,826 INFO  L226             Difference]: Without dead ends: 11197
[2020-10-14 19:36:29,845 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-14 19:36:29,862 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11197 states.
[2020-10-14 19:36:30,127 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11197 to 11126.
[2020-10-14 19:36:30,128 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11126 states.
[2020-10-14 19:36:30,154 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11126 states to 11126 states and 15542 transitions.
[2020-10-14 19:36:30,155 INFO  L78                 Accepts]: Start accepts. Automaton has 11126 states and 15542 transitions. Word has length 1718
[2020-10-14 19:36:30,158 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 19:36:30,158 INFO  L479      AbstractCegarLoop]: Abstraction has 11126 states and 15542 transitions.
[2020-10-14 19:36:30,158 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-14 19:36:30,158 INFO  L276                IsEmpty]: Start isEmpty. Operand 11126 states and 15542 transitions.
[2020-10-14 19:36:30,221 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1738
[2020-10-14 19:36:30,221 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:36:30,223 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:30,224 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-14 19:36:30,224 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:36:30,224 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:36:30,225 INFO  L82        PathProgramCache]: Analyzing trace with hash 733508191, now seen corresponding path program 1 times
[2020-10-14 19:36:30,225 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:36:30,235 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317603413]
[2020-10-14 19:36:30,235 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:36:30,352 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:36:30,377 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:36:30,432 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:36:35,212 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:36:35,368 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:36:35,368 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1763
[2020-10-14 19:36:35,368 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 19:36:35,369 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5013
[2020-10-14 19:36:35,369 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:36:35,369 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:36:35,369 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-14 19:36:35,370 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 19:36:35,370 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-10-14 19:36:35,370 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:36:36,328 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:36:36,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:36:36,334 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:36:36,340 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:36:36,341 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:36:36,341 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:36:36,341 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-14 19:36:36,342 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:36:36,342 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:36:36,342 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:36:36,343 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:36:36,343 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 19:36:36,344 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:36:36,380 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 19:36:36,384 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:36:36,386 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:36:36,406 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:36:36,415 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:36:36,416 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-14 19:36:36,416 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 19:36:36,417 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 31
[2020-10-14 19:36:36,419 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:36:36,419 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:36:36,419 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 19:36:36,420 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 19:36:36,420 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-14 19:36:36,420 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 19:36:36,442 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-14 19:36:36,448 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:36:36,453 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:36:36,497 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:36:36,497 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-10-14 19:36:36,498 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:36:36,498 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 47
[2020-10-14 19:36:36,500 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:36:36,501 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:36:36,501 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 19:36:36,502 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 19:36:36,502 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 22
[2020-10-14 19:36:36,502 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:36:38,060 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2020-10-14 19:36:38,060 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317603413]
[2020-10-14 19:36:38,061 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 19:36:38,061 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-14 19:36:38,061 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34255130]
[2020-10-14 19:36:38,063 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 19:36:38,064 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:36:38,064 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 19:36:38,068 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 19:36:38,068 INFO  L87              Difference]: Start difference. First operand 11126 states and 15542 transitions. Second operand 7 states.
[2020-10-14 19:37:02,206 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 19:37:02,207 INFO  L93              Difference]: Finished difference Result 33010 states and 47143 transitions.
[2020-10-14 19:37:02,212 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-14 19:37:02,212 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1737
[2020-10-14 19:37:02,212 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 19:37:02,302 INFO  L225             Difference]: With dead ends: 33010
[2020-10-14 19:37:02,302 INFO  L226             Difference]: Without dead ends: 21890
[2020-10-14 19:37:02,334 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 2 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 19:37:02,359 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21890 states.
[2020-10-14 19:37:02,781 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21890 to 21848.
[2020-10-14 19:37:02,781 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 21848 states.
[2020-10-14 19:37:02,836 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21848 states to 21848 states and 29955 transitions.
[2020-10-14 19:37:02,836 INFO  L78                 Accepts]: Start accepts. Automaton has 21848 states and 29955 transitions. Word has length 1737
[2020-10-14 19:37:02,837 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 19:37:02,837 INFO  L479      AbstractCegarLoop]: Abstraction has 21848 states and 29955 transitions.
[2020-10-14 19:37:02,837 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 19:37:02,838 INFO  L276                IsEmpty]: Start isEmpty. Operand 21848 states and 29955 transitions.
[2020-10-14 19:37:02,915 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1745
[2020-10-14 19:37:02,916 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:37:02,917 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:02,917 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-14 19:37:02,918 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:37:02,918 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:37:02,919 INFO  L82        PathProgramCache]: Analyzing trace with hash -721849836, now seen corresponding path program 1 times
[2020-10-14 19:37:02,919 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:37:02,919 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042906078]
[2020-10-14 19:37:02,920 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:37:03,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:37:03,140 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:37:03,546 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:37:04,072 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:37:08,114 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:37:08,114 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1770
[2020-10-14 19:37:08,115 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 19:37:08,115 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5048
[2020-10-14 19:37:08,115 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:37:08,115 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:37:08,115 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 33
[2020-10-14 19:37:08,116 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 47
[2020-10-14 19:37:08,116 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1279
[2020-10-14 19:37:08,116 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:37:11,819 WARN  L193               SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 26
[2020-10-14 19:37:11,995 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:37:11,999 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:37:12,001 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:37:12,003 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:37:12,003 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:37:12,003 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:37:12,003 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-14 19:37:12,004 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:37:12,004 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:37:12,004 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:37:12,004 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:37:12,004 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:37:12,004 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:37:12,041 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 19:37:12,043 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:37:12,044 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:37:12,047 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:37:12,047 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-14 19:37:12,047 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:37:12,048 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-14 19:37:12,048 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:37:12,048 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:37:12,048 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:37:12,048 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:37:12,049 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:37:12,049 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:37:12,051 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-14 19:37:12,055 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:37:12,059 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:37:12,078 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:37:12,078 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-14 19:37:12,078 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:37:12,079 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-10-14 19:37:12,079 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:37:12,079 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:37:12,079 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-10-14 19:37:12,079 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:37:12,079 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-10-14 19:37:12,079 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:37:28,868 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2020-10-14 19:37:28,869 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042906078]
[2020-10-14 19:37:28,869 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 19:37:28,869 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25
[2020-10-14 19:37:28,869 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233589674]
[2020-10-14 19:37:28,871 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-10-14 19:37:28,871 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:37:28,871 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-10-14 19:37:28,871 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600
[2020-10-14 19:37:28,872 INFO  L87              Difference]: Start difference. First operand 21848 states and 29955 transitions. Second operand 25 states.
[2020-10-14 19:37:29,619 WARN  L193               SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69
[2020-10-14 19:37:29,849 WARN  L193               SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77
[2020-10-14 19:37:34,207 WARN  L193               SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76
[2020-10-14 19:37:35,093 WARN  L193               SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75
[2020-10-14 19:37:36,965 WARN  L193               SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66
[2020-10-14 19:37:37,206 WARN  L193               SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72
[2020-10-14 19:37:44,446 WARN  L193               SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66
[2020-10-14 19:37:44,673 WARN  L193               SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72
[2020-10-14 19:37:52,066 WARN  L193               SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66
[2020-10-14 19:37:52,288 WARN  L193               SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72
[2020-10-14 19:37:55,256 WARN  L193               SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71
[2020-10-14 19:37:59,684 WARN  L193               SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64
[2020-10-14 19:37:59,897 WARN  L193               SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69
[2020-10-14 19:38:02,768 WARN  L193               SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68
[2020-10-14 19:38:06,474 WARN  L193               SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66
[2020-10-14 19:38:07,159 WARN  L193               SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60
[2020-10-14 19:38:07,346 WARN  L193               SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62
[2020-10-14 19:38:20,970 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 19:38:20,970 INFO  L93              Difference]: Finished difference Result 50228 states and 70165 transitions.
[2020-10-14 19:38:20,972 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2020-10-14 19:38:20,972 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states. Word has length 1744
[2020-10-14 19:38:20,974 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 19:38:21,085 INFO  L225             Difference]: With dead ends: 50228
[2020-10-14 19:38:21,085 INFO  L226             Difference]: Without dead ends: 28386
[2020-10-14 19:38:21,131 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=294, Invalid=1598, Unknown=0, NotChecked=0, Total=1892
[2020-10-14 19:38:21,168 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28386 states.
[2020-10-14 19:38:21,622 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28386 to 28382.
[2020-10-14 19:38:21,623 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28382 states.
[2020-10-14 19:38:21,681 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28382 states to 28382 states and 37128 transitions.
[2020-10-14 19:38:21,681 INFO  L78                 Accepts]: Start accepts. Automaton has 28382 states and 37128 transitions. Word has length 1744
[2020-10-14 19:38:21,683 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 19:38:21,683 INFO  L479      AbstractCegarLoop]: Abstraction has 28382 states and 37128 transitions.
[2020-10-14 19:38:21,683 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-10-14 19:38:21,683 INFO  L276                IsEmpty]: Start isEmpty. Operand 28382 states and 37128 transitions.
[2020-10-14 19:38:21,764 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1746
[2020-10-14 19:38:21,764 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:38:21,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:21,766 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-14 19:38:21,766 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:38:21,766 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:38:21,767 INFO  L82        PathProgramCache]: Analyzing trace with hash -1187048346, now seen corresponding path program 1 times
[2020-10-14 19:38:21,767 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:38:21,767 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407390297]
[2020-10-14 19:38:21,768 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:38:21,886 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:38:21,916 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:38:22,601 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:38:25,033 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:38:27,056 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:38:27,057 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1769
[2020-10-14 19:38:27,057 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 19:38:27,057 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5165
[2020-10-14 19:38:27,057 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:38:27,058 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:38:27,058 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-14 19:38:27,058 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 47
[2020-10-14 19:38:27,058 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1721
[2020-10-14 19:38:27,058 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:38:27,649 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:38:27,651 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:38:27,652 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:38:27,655 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:38:27,655 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:38:27,655 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:38:27,655 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-14 19:38:27,656 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:38:27,656 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:38:27,656 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:38:27,656 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:38:27,656 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:38:27,657 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:38:27,684 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 19:38:27,691 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:38:27,697 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:38:27,725 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:38:27,725 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 39
[2020-10-14 19:38:27,725 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:38:27,726 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 33
[2020-10-14 19:38:27,726 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:38:27,726 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:38:27,726 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:38:27,726 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:38:27,727 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-10-14 19:38:27,727 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:38:30,712 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 19:38:30,712 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407390297]
[2020-10-14 19:38:30,713 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 19:38:30,713 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-14 19:38:30,713 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640844947]
[2020-10-14 19:38:30,715 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-14 19:38:30,715 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:38:30,715 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-14 19:38:30,715 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-14 19:38:30,715 INFO  L87              Difference]: Start difference. First operand 28382 states and 37128 transitions. Second operand 6 states.