/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=BIGGEST --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_label49.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-12 11:59:48,108 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-12 11:59:48,111 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-12 11:59:48,134 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-12 11:59:48,134 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-12 11:59:48,135 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-12 11:59:48,137 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-12 11:59:48,139 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-12 11:59:48,140 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-12 11:59:48,141 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-12 11:59:48,142 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-12 11:59:48,143 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-12 11:59:48,143 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-12 11:59:48,145 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-12 11:59:48,146 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-12 11:59:48,147 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-12 11:59:48,147 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-12 11:59:48,148 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-12 11:59:48,150 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-12 11:59:48,152 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-12 11:59:48,153 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-12 11:59:48,154 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-12 11:59:48,155 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-12 11:59:48,156 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-12 11:59:48,159 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-12 11:59:48,159 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-12 11:59:48,160 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-12 11:59:48,160 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-12 11:59:48,161 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-12 11:59:48,162 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-12 11:59:48,165 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-12 11:59:48,166 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-12 11:59:48,167 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-12 11:59:48,168 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-12 11:59:48,169 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-12 11:59:48,169 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-12 11:59:48,172 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-12 11:59:48,172 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-12 11:59:48,172 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-12 11:59:48,173 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-12 11:59:48,174 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-12 11:59:48,175 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
[2020-10-12 11:59:48,225 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-12 11:59:48,225 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-12 11:59:48,226 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-12 11:59:48,226 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-12 11:59:48,227 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-12 11:59:48,227 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-12 11:59:48,228 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-12 11:59:48,228 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-12 11:59:48,228 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-12 11:59:48,228 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-12 11:59:48,229 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-12 11:59:48,229 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-12 11:59:48,230 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-12 11:59:48,230 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-12 11:59:48,230 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-12 11:59:48,231 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-12 11:59:48,231 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-12 11:59:48,231 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-12 11:59:48,231 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-12 11:59:48,231 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-12 11:59:48,232 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-12 11:59:48,232 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-12 11:59:48,232 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-12 11:59:48,233 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-12 11:59:48,233 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-12 11:59:48,233 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-12 11:59:48,233 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-12 11:59:48,233 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-12 11:59:48,233 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-12 11:59:48,234 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true;
[2020-10-12 11:59:48,541 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-12 11:59:48,552 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-12 11:59:48,555 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-12 11:59:48,556 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-12 11:59:48,557 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-12 11:59:48,557 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label49.c
[2020-10-12 11:59:48,627 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc832c927/581bfbbce1384012bfdd0255b0cb9282/FLAG2e0575181
[2020-10-12 11:59:49,536 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-12 11:59:49,537 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label49.c
[2020-10-12 11:59:49,585 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc832c927/581bfbbce1384012bfdd0255b0cb9282/FLAG2e0575181
[2020-10-12 11:59:49,946 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc832c927/581bfbbce1384012bfdd0255b0cb9282
[2020-10-12 11:59:49,957 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-12 11:59:49,959 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-12 11:59:49,962 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-12 11:59:49,962 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-12 11:59:49,966 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-12 11:59:49,967 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:49" (1/1) ...
[2020-10-12 11:59:49,971 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:49, skipping insertion in model container
[2020-10-12 11:59:49,971 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:49" (1/1) ...
[2020-10-12 11:59:49,981 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-12 11:59:50,198 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-12 11:59:52,771 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 11:59:52,777 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-12 11:59:53,932 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 11:59:53,997 INFO  L208         MainTranslator]: Completed translation
[2020-10-12 11:59:53,998 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53 WrapperNode
[2020-10-12 11:59:53,998 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-12 11:59:53,999 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-12 11:59:53,999 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-12 11:59:53,999 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-12 11:59:54,009 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (1/1) ...
[2020-10-12 11:59:54,010 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (1/1) ...
[2020-10-12 11:59:54,087 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (1/1) ...
[2020-10-12 11:59:54,087 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (1/1) ...
[2020-10-12 11:59:54,271 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (1/1) ...
[2020-10-12 11:59:54,354 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (1/1) ...
[2020-10-12 11:59:54,427 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (1/1) ...
[2020-10-12 11:59:54,492 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-12 11:59:54,493 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-12 11:59:54,493 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-12 11:59:54,493 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-12 11:59:54,495 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (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
[2020-10-12 11:59:54,560 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-12 11:59:54,560 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-12 11:59:54,561 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-12 11:59:54,561 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-12 11:59:54,561 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-12 11:59:54,561 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-12 11:59:54,561 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-12 11:59:54,561 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-12 11:59:54,562 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-12 11:59:54,562 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-12 11:59:54,562 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-12 11:59:54,562 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-12 11:59:54,562 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-12 11:59:54,563 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-12 11:59:54,563 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-12 11:59:54,563 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-12 11:59:54,563 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-12 11:59:54,563 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-12 11:59:54,563 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-12 11:59:54,564 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-12 11:59:54,564 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-12 11:59:54,564 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-12 11:59:54,564 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-12 11:59:54,564 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-12 11:59:54,565 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-12 12:00:02,926 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-12 12:00:02,927 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-12 12:00:02,947 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:00:02 BoogieIcfgContainer
[2020-10-12 12:00:02,947 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-12 12:00:02,950 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-12 12:00:02,950 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-12 12:00:02,956 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-12 12:00:02,956 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:59:49" (1/3) ...
[2020-10-12 12:00:02,957 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f3fe2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:00:02, skipping insertion in model container
[2020-10-12 12:00:02,957 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (2/3) ...
[2020-10-12 12:00:02,958 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f3fe2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:00:02, skipping insertion in model container
[2020-10-12 12:00:02,958 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:00:02" (3/3) ...
[2020-10-12 12:00:02,960 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label49.c
[2020-10-12 12:00:03,036 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-12 12:00:03,047 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-12 12:00:03,062 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-12 12:00:03,095 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-12 12:00:03,095 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-12 12:00:03,095 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-12 12:00:03,095 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-12 12:00:03,095 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-12 12:00:03,095 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-12 12:00:03,095 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-12 12:00:03,095 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-12 12:00:03,147 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-12 12:00:03,247 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1698
[2020-10-12 12:00:03,247 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 12:00:03,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-12 12:00:03,251 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 12:00:03,255 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 12:00:03,257 INFO  L82        PathProgramCache]: Analyzing trace with hash 2053076408, now seen corresponding path program 1 times
[2020-10-12 12:00:03,263 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 12:00:03,263 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578272785]
[2020-10-12 12:00:03,264 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 12:00:04,220 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:00:04,737 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:00:09,242 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 12:00:09,242 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1719
[2020-10-12 12:00:09,242 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 12:00:09,243 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5012
[2020-10-12 12:00:09,244 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 12:00:09,245 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-12 12:00:09,245 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 12:00:09,245 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1713
[2020-10-12 12:00:09,246 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-12 12:00:10,916 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 12:00:10,921 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:00:10,924 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:00:10,932 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 12:00:10,932 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 12:00:10,932 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 12:00:10,933 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-12 12:00:10,933 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 12:00:10,933 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 12:00:10,933 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 12:00:10,934 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 12:00:10,934 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 12:00:13,372 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-12 12:00:13,373 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578272785]
[2020-10-12 12:00:13,374 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-12 12:00:13,375 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-12 12:00:13,375 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688614791]
[2020-10-12 12:00:13,383 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-12 12:00:13,384 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 12:00:13,394 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-12 12:00:13,395 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-12 12:00:13,397 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 4 states.
[2020-10-12 12:00:29,933 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 12:00:29,933 INFO  L93              Difference]: Finished difference Result 6330 states and 11884 transitions.
[2020-10-12 12:00:29,934 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-12 12:00:29,935 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1697
[2020-10-12 12:00:29,945 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 12:00:29,992 INFO  L225             Difference]: With dead ends: 6330
[2020-10-12 12:00:29,992 INFO  L226             Difference]: Without dead ends: 4044
[2020-10-12 12:00:30,005 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-12 12:00:30,029 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4044 states.
[2020-10-12 12:00:30,215 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 3999.
[2020-10-12 12:00:30,216 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3999 states.
[2020-10-12 12:00:30,236 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 6914 transitions.
[2020-10-12 12:00:30,238 INFO  L78                 Accepts]: Start accepts. Automaton has 3999 states and 6914 transitions. Word has length 1697
[2020-10-12 12:00:30,243 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 12:00:30,243 INFO  L479      AbstractCegarLoop]: Abstraction has 3999 states and 6914 transitions.
[2020-10-12 12:00:30,243 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-12 12:00:30,243 INFO  L276                IsEmpty]: Start isEmpty. Operand 3999 states and 6914 transitions.
[2020-10-12 12:00:30,383 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1707
[2020-10-12 12:00:30,383 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 12:00:30,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-12 12:00:30,385 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-12 12:00:30,385 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 12:00:30,386 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 12:00:30,387 INFO  L82        PathProgramCache]: Analyzing trace with hash -159553629, now seen corresponding path program 1 times
[2020-10-12 12:00:30,387 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 12:00:30,387 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050992674]
[2020-10-12 12:00:30,388 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 12:00:30,500 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:00:30,530 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:00:32,890 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:00:35,601 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 12:00:35,602 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1730
[2020-10-12 12:00:35,602 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-12 12:00:35,602 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5098
[2020-10-12 12:00:35,604 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 12:00:35,607 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-12 12:00:35,607 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-12 12:00:35,607 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1710
[2020-10-12 12:00:35,607 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-10-12 12:00:37,342 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 12:00:37,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:00:37,349 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:00:37,353 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 12:00:37,353 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 12:00:37,355 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 12:00:37,356 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-12 12:00:37,356 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 12:00:37,356 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 12:00:37,357 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 12:00:37,357 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 12:00:37,357 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 12:00:37,382 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-12 12:00:37,388 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:00:37,392 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:00:37,402 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 12:00:37,402 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-12 12:00:37,402 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 12:00:37,403 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-10-12 12:00:37,403 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 12:00:37,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 12:00:37,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 12:00:37,404 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 12:00:37,404 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 12:00:39,545 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-12 12:00:39,546 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050992674]
[2020-10-12 12:00:39,546 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-12 12:00:39,547 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-10-12 12:00:39,547 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629231024]
[2020-10-12 12:00:39,551 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-12 12:00:39,551 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 12:00:39,551 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-12 12:00:39,552 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-12 12:00:39,552 INFO  L87              Difference]: Start difference. First operand 3999 states and 6914 transitions. Second operand 5 states.
[2020-10-12 12:00:59,610 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 12:00:59,610 INFO  L93              Difference]: Finished difference Result 11645 states and 20382 transitions.
[2020-10-12 12:00:59,611 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-12 12:00:59,611 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1706
[2020-10-12 12:00:59,616 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 12:00:59,655 INFO  L225             Difference]: With dead ends: 11645
[2020-10-12 12:00:59,656 INFO  L226             Difference]: Without dead ends: 7652
[2020-10-12 12:00:59,667 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-12 12:00:59,676 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7652 states.
[2020-10-12 12:00:59,855 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7652 to 7579.
[2020-10-12 12:00:59,855 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7579 states.
[2020-10-12 12:00:59,889 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7579 states to 7579 states and 11625 transitions.
[2020-10-12 12:00:59,889 INFO  L78                 Accepts]: Start accepts. Automaton has 7579 states and 11625 transitions. Word has length 1706
[2020-10-12 12:00:59,892 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 12:00:59,893 INFO  L479      AbstractCegarLoop]: Abstraction has 7579 states and 11625 transitions.
[2020-10-12 12:00:59,893 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-12 12:00:59,893 INFO  L276                IsEmpty]: Start isEmpty. Operand 7579 states and 11625 transitions.
[2020-10-12 12:01:00,022 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1708
[2020-10-12 12:01:00,022 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 12:01:00,024 INFO  L422         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-12 12:01:00,024 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-12 12:01:00,024 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 12:01:00,025 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 12:01:00,025 INFO  L82        PathProgramCache]: Analyzing trace with hash -896424936, now seen corresponding path program 1 times
[2020-10-12 12:01:00,026 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 12:01:00,026 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30268896]
[2020-10-12 12:01:00,027 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 12:01:00,152 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:01:00,177 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:01:02,451 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:01:05,244 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 12:01:05,244 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1731
[2020-10-12 12:01:05,244 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-12 12:01:05,245 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5089
[2020-10-12 12:01:05,245 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 12:01:05,245 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-12 12:01:05,245 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-10-12 12:01:05,246 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1710
[2020-10-12 12:01:05,246 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 12:01:07,515 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 12:01:07,516 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:01:07,518 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:01:07,520 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 12:01:07,520 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 12:01:07,520 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 12:01:07,520 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 12:01:07,520 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 12:01:07,521 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 12:01:07,521 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 12:01:07,521 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 12:01:07,521 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 12:01:07,542 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-12 12:01:07,545 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:01:07,547 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:01:07,555 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 12:01:07,556 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-10-12 12:01:07,556 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 12:01:07,557 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-12 12:01:07,557 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 12:01:07,557 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 12:01:07,558 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 12:01:07,558 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-12 12:01:07,559 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 12:01:09,962 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-12 12:01:09,963 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30268896]
[2020-10-12 12:01:09,963 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-12 12:01:09,963 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-10-12 12:01:09,964 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753954849]
[2020-10-12 12:01:09,966 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-12 12:01:09,966 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 12:01:09,966 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-12 12:01:09,966 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-12 12:01:09,966 INFO  L87              Difference]: Start difference. First operand 7579 states and 11625 transitions. Second operand 5 states.
[2020-10-12 12:01:30,439 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 12:01:30,439 INFO  L93              Difference]: Finished difference Result 22225 states and 34573 transitions.
[2020-10-12 12:01:30,440 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-12 12:01:30,441 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1707
[2020-10-12 12:01:30,444 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 12:01:30,508 INFO  L225             Difference]: With dead ends: 22225
[2020-10-12 12:01:30,508 INFO  L226             Difference]: Without dead ends: 14652
[2020-10-12 12:01:30,535 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-12 12:01:30,554 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14652 states.
[2020-10-12 12:01:30,856 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14652 to 14642.
[2020-10-12 12:01:30,857 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 14642 states.
[2020-10-12 12:01:30,884 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14642 states to 14642 states and 20278 transitions.
[2020-10-12 12:01:30,885 INFO  L78                 Accepts]: Start accepts. Automaton has 14642 states and 20278 transitions. Word has length 1707
[2020-10-12 12:01:30,887 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 12:01:30,888 INFO  L479      AbstractCegarLoop]: Abstraction has 14642 states and 20278 transitions.
[2020-10-12 12:01:30,888 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-12 12:01:30,892 INFO  L276                IsEmpty]: Start isEmpty. Operand 14642 states and 20278 transitions.
[2020-10-12 12:01:30,966 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1723
[2020-10-12 12:01:30,966 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 12:01:30,968 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-12 12:01:30,968 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-12 12:01:30,968 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 12:01:30,968 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 12:01:30,969 INFO  L82        PathProgramCache]: Analyzing trace with hash 1964794134, now seen corresponding path program 1 times
[2020-10-12 12:01:30,970 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 12:01:30,970 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770973640]
[2020-10-12 12:01:30,971 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 12:01:31,088 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:01:31,114 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:01:31,188 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:01:31,533 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:01:36,148 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 12:01:36,149 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1748
[2020-10-12 12:01:36,149 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-12 12:01:36,149 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5057
[2020-10-12 12:01:36,149 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 12:01:36,149 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 32
[2020-10-12 12:01:36,150 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 37
[2020-10-12 12:01:36,150 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1294
[2020-10-12 12:01:36,150 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 12:01:39,990 WARN  L193               SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38
[2020-10-12 12:01:40,104 WARN  L193               SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38
[2020-10-12 12:01:40,225 WARN  L193               SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38
[2020-10-12 12:01:41,431 WARN  L193               SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38
[2020-10-12 12:01:41,624 WARN  L193               SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38
[2020-10-12 12:01:41,843 WARN  L193               SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 36
[2020-10-12 12:01:41,911 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 12:01:41,913 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:01:41,914 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:01:41,916 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 12:01:41,917 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 12:01:41,917 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 12:01:41,917 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 12:01:41,917 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 12:01:41,918 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 12:01:41,918 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 12:01:41,918 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 12:01:41,918 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 12:01:41,960 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-12 12:01:41,961 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:01:41,962 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:01:41,965 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 12:01:41,965 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-10-12 12:01:41,966 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 12:01:41,966 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 12:01:41,966 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 12:01:41,966 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 12:01:41,967 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 12:01:41,967 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 12:01:41,967 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 12:01:41,969 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-10-12 12:01:41,973 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:01:41,977 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:01:41,990 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 12:01:41,990 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 16
[2020-10-12 12:01:41,990 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 12:01:41,991 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-10-12 12:01:41,991 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 12:01:41,991 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 12:01:41,991 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 12:01:41,991 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-12 12:01:41,992 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 12:02:01,482 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2020-10-12 12:02:01,483 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770973640]
[2020-10-12 12:02:01,483 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-12 12:02:01,484 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23
[2020-10-12 12:02:01,490 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464360479]
[2020-10-12 12:02:01,492 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-12 12:02:01,493 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 12:02:01,493 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-12 12:02:01,493 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506
[2020-10-12 12:02:01,494 INFO  L87              Difference]: Start difference. First operand 14642 states and 20278 transitions. Second operand 23 states.
[2020-10-12 12:02:02,353 WARN  L193               SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 84
[2020-10-12 12:02:03,572 WARN  L193               SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 83
[2020-10-12 12:02:28,836 WARN  L193               SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 79
[2020-10-12 12:02:37,767 WARN  L193               SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 79
[2020-10-12 12:02:42,332 WARN  L193               SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77
[2020-10-12 12:02:47,437 WARN  L193               SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 80
[2020-10-12 12:02:49,161 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70
[2020-10-12 12:03:03,707 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 12:03:03,707 INFO  L93              Difference]: Finished difference Result 30571 states and 43216 transitions.
[2020-10-12 12:03:03,709 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2020-10-12 12:03:03,709 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states. Word has length 1722
[2020-10-12 12:03:03,711 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 12:03:03,754 INFO  L225             Difference]: With dead ends: 30571
[2020-10-12 12:03:03,755 INFO  L226             Difference]: Without dead ends: 15935
[2020-10-12 12:03:03,787 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640
[2020-10-12 12:03:03,808 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15935 states.
[2020-10-12 12:03:04,058 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15935 to 15930.
[2020-10-12 12:03:04,058 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15930 states.
[2020-10-12 12:03:04,084 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15930 states to 15930 states and 21605 transitions.
[2020-10-12 12:03:04,085 INFO  L78                 Accepts]: Start accepts. Automaton has 15930 states and 21605 transitions. Word has length 1722
[2020-10-12 12:03:04,086 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 12:03:04,087 INFO  L479      AbstractCegarLoop]: Abstraction has 15930 states and 21605 transitions.
[2020-10-12 12:03:04,087 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-12 12:03:04,087 INFO  L276                IsEmpty]: Start isEmpty. Operand 15930 states and 21605 transitions.
[2020-10-12 12:03:04,150 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1725
[2020-10-12 12:03:04,150 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 12:03:04,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-12 12:03:04,152 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-12 12:03:04,152 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 12:03:04,152 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 12:03:04,153 INFO  L82        PathProgramCache]: Analyzing trace with hash 1054429966, now seen corresponding path program 1 times
[2020-10-12 12:03:04,153 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 12:03:04,154 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070007067]
[2020-10-12 12:03:04,154 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 12:03:04,265 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:03:04,299 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:03:04,580 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:03:09,298 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 12:03:09,299 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1748
[2020-10-12 12:03:09,299 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-12 12:03:09,299 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5029
[2020-10-12 12:03:09,299 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 12:03:09,299 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 32
[2020-10-12 12:03:09,299 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 37
[2020-10-12 12:03:09,299 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1244
[2020-10-12 12:03:09,299 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 12:03:11,075 WARN  L193               SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33
[2020-10-12 12:03:12,222 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 12:03:12,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:03:12,224 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:03:12,226 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 12:03:12,226 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 12:03:12,226 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 12:03:12,226 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 12:03:12,227 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 12:03:12,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 12:03:12,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 12:03:12,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 12:03:12,227 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 12:03:12,270 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-12 12:03:12,276 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:03:12,280 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:03:12,295 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 12:03:12,295 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 28
[2020-10-12 12:03:12,295 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 12:03:12,295 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-10-12 12:03:12,296 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 12:03:12,296 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 12:03:12,296 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 12:03:12,296 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 22
[2020-10-12 12:03:12,296 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 12:03:26,711 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-12 12:03:26,711 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070007067]
[2020-10-12 12:03:26,711 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-12 12:03:26,712 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23
[2020-10-12 12:03:26,712 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027365812]
[2020-10-12 12:03:26,714 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-12 12:03:26,714 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 12:03:26,714 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-12 12:03:26,715 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506
[2020-10-12 12:03:26,715 INFO  L87              Difference]: Start difference. First operand 15930 states and 21605 transitions. Second operand 23 states.