/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_label45.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-12 11:56:58,746 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-12 11:56:58,748 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-12 11:56:58,777 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-12 11:56:58,777 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-12 11:56:58,778 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-12 11:56:58,779 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-12 11:56:58,781 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-12 11:56:58,783 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-12 11:56:58,783 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-12 11:56:58,784 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-12 11:56:58,785 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-12 11:56:58,786 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-12 11:56:58,786 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-12 11:56:58,787 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-12 11:56:58,788 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-12 11:56:58,789 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-12 11:56:58,790 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-12 11:56:58,792 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-12 11:56:58,793 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-12 11:56:58,795 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-12 11:56:58,796 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-12 11:56:58,797 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-12 11:56:58,797 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-12 11:56:58,800 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-12 11:56:58,800 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-12 11:56:58,800 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-12 11:56:58,801 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-12 11:56:58,801 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-12 11:56:58,802 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-12 11:56:58,803 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-10-12 11:56:58,804 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-12 11:56:58,805 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-12 11:56:58,806 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-12 11:56:58,806 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-12 11:56:58,806 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-12 11:56:58,807 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-12 11:56:58,807 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-12 11:56:58,808 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-12 11:56:58,808 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-12 11:56:58,809 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 11:56:58,832 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-12 11:56:58,833 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-12 11:56:58,834 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-12 11:56:58,834 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-12 11:56:58,834 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-12 11:56:58,835 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-12 11:56:58,835 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-12 11:56:58,835 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-12 11:56:58,835 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-12 11:56:58,835 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-12 11:56:58,835 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-12 11:56:58,836 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-12 11:56:58,836 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-12 11:56:58,836 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-12 11:56:58,836 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-12 11:56:58,836 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-12 11:56:58,837 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-12 11:56:58,837 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-12 11:56:58,837 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-12 11:56:58,837 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-12 11:56:58,837 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-12 11:56:58,838 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-12 11:56:58,838 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-12 11:56:58,838 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-12 11:56:58,838 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-12 11:56:58,838 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-12 11:56:58,839 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-12 11:56:58,839 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-12 11:56:58,839 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-12 11:56:58,839 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 11:56:59,189 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-12 11:56:59,199 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-12 11:56:59,204 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-12 11:56:59,205 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-12 11:56:59,206 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-12 11:56:59,206 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label45.c
[2020-10-12 11:56:59,270 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cce85535b/9e5be164baaa4cd6a83c830e05813b1f/FLAG59d0f377c
[2020-10-12 11:57:00,337 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-12 11:57:00,337 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label45.c
[2020-10-12 11:57:00,396 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cce85535b/9e5be164baaa4cd6a83c830e05813b1f/FLAG59d0f377c
[2020-10-12 11:57:00,608 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cce85535b/9e5be164baaa4cd6a83c830e05813b1f
[2020-10-12 11:57:00,617 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-12 11:57:00,618 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-12 11:57:00,619 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-12 11:57:00,620 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-12 11:57:00,623 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-12 11:57:00,625 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:57:00" (1/1) ...
[2020-10-12 11:57:00,628 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8099dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:00, skipping insertion in model container
[2020-10-12 11:57:00,628 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:57:00" (1/1) ...
[2020-10-12 11:57:00,638 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-12 11:57:00,875 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-12 11:57:03,456 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 11:57:03,465 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-12 11:57:04,581 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 11:57:04,633 INFO  L208         MainTranslator]: Completed translation
[2020-10-12 11:57:04,634 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:04 WrapperNode
[2020-10-12 11:57:04,634 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-12 11:57:04,635 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-12 11:57:04,635 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-12 11:57:04,635 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-12 11:57:04,648 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:04" (1/1) ...
[2020-10-12 11:57:04,649 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:04" (1/1) ...
[2020-10-12 11:57:04,735 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:04" (1/1) ...
[2020-10-12 11:57:04,736 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:04" (1/1) ...
[2020-10-12 11:57:04,913 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:04" (1/1) ...
[2020-10-12 11:57:05,112 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:04" (1/1) ...
[2020-10-12 11:57:05,161 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:04" (1/1) ...
[2020-10-12 11:57:05,220 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-12 11:57:05,221 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-12 11:57:05,221 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-12 11:57:05,221 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-12 11:57:05,223 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:04" (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 11:57:05,312 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-12 11:57:05,313 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-12 11:57:05,313 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-12 11:57:05,313 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-12 11:57:05,313 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-12 11:57:05,314 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-12 11:57:05,314 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-12 11:57:05,315 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-12 11:57:05,316 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-12 11:57:05,316 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-12 11:57:05,316 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-12 11:57:05,316 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-12 11:57:05,317 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-12 11:57:05,317 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-12 11:57:05,317 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-12 11:57:05,318 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-12 11:57:05,318 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-12 11:57:05,318 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-12 11:57:05,318 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-12 11:57:05,319 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-12 11:57:05,319 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-12 11:57:05,319 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-12 11:57:05,319 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-12 11:57:05,319 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-12 11:57:05,319 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-12 11:57:13,626 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-12 11:57:13,627 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-12 11:57:13,643 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:57:13 BoogieIcfgContainer
[2020-10-12 11:57:13,643 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-12 11:57:13,644 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-12 11:57:13,645 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-12 11:57:13,648 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-12 11:57:13,648 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:57:00" (1/3) ...
[2020-10-12 11:57:13,649 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2f92aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:57:13, skipping insertion in model container
[2020-10-12 11:57:13,649 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:04" (2/3) ...
[2020-10-12 11:57:13,650 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2f92aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:57:13, skipping insertion in model container
[2020-10-12 11:57:13,650 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:57:13" (3/3) ...
[2020-10-12 11:57:13,652 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label45.c
[2020-10-12 11:57:13,662 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-12 11:57:13,672 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-12 11:57:13,687 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-12 11:57:13,719 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-12 11:57:13,719 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-12 11:57:13,719 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-12 11:57:13,719 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-12 11:57:13,719 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-12 11:57:13,720 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-12 11:57:13,720 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-12 11:57:13,720 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-12 11:57:13,771 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-12 11:57:13,935 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1696
[2020-10-12 11:57:13,936 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 11:57:13,940 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]
[2020-10-12 11:57:13,941 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 11:57:13,949 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 11:57:13,950 INFO  L82        PathProgramCache]: Analyzing trace with hash -114064752, now seen corresponding path program 1 times
[2020-10-12 11:57:13,960 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 11:57:13,960 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19759220]
[2020-10-12 11:57:13,961 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 11:57:14,875 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:57:15,470 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:57:20,063 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:57:20,064 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1717
[2020-10-12 11:57:20,064 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:57:20,064 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5179
[2020-10-12 11:57:20,066 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:57:20,067 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-12 11:57:20,067 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 11:57:20,067 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1711
[2020-10-12 11:57:20,067 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-12 11:57:21,348 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 11:57:21,353 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:57:21,356 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:57:21,364 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:57:21,364 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 11:57:21,365 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:57:21,365 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-12 11:57:21,365 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:57:21,366 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 11:57:21,366 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:57:21,366 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 11:57:21,367 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 11:57:25,193 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 11:57:25,193 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19759220]
[2020-10-12 11:57:25,195 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-12 11:57:25,196 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-12 11:57:25,196 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258838034]
[2020-10-12 11:57:25,207 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-12 11:57:25,207 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 11:57:25,221 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-12 11:57:25,222 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-12 11:57:25,224 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 5 states.
[2020-10-12 11:57:50,001 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 11:57:50,001 INFO  L93              Difference]: Finished difference Result 8125 states and 15405 transitions.
[2020-10-12 11:57:50,003 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-12 11:57:50,005 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1695
[2020-10-12 11:57:50,013 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 11:57:50,072 INFO  L225             Difference]: With dead ends: 8125
[2020-10-12 11:57:50,072 INFO  L226             Difference]: Without dead ends: 5835
[2020-10-12 11:57:50,087 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-12 11:57:50,117 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5835 states.
[2020-10-12 11:57:50,302 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5801.
[2020-10-12 11:57:50,303 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5801 states.
[2020-10-12 11:57:50,329 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9384 transitions.
[2020-10-12 11:57:50,331 INFO  L78                 Accepts]: Start accepts. Automaton has 5801 states and 9384 transitions. Word has length 1695
[2020-10-12 11:57:50,335 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 11:57:50,336 INFO  L479      AbstractCegarLoop]: Abstraction has 5801 states and 9384 transitions.
[2020-10-12 11:57:50,336 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-12 11:57:50,336 INFO  L276                IsEmpty]: Start isEmpty. Operand 5801 states and 9384 transitions.
[2020-10-12 11:57:50,461 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1720
[2020-10-12 11:57:50,462 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 11:57:50,463 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-12 11:57:50,464 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-12 11:57:50,465 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 11:57:50,465 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 11:57:50,466 INFO  L82        PathProgramCache]: Analyzing trace with hash 675627971, now seen corresponding path program 1 times
[2020-10-12 11:57:50,467 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 11:57:50,467 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424634308]
[2020-10-12 11:57:50,468 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 11:57:50,611 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:57:50,640 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:57:50,726 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:57:51,448 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:57:55,791 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:57:55,792 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1745
[2020-10-12 11:57:55,792 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-12 11:57:55,793 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5177
[2020-10-12 11:57:55,797 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:57:55,797 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 32
[2020-10-12 11:57:55,797 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 36
[2020-10-12 11:57:55,797 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1294
[2020-10-12 11:57:55,798 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 11:58:00,177 WARN  L193               SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34
[2020-10-12 11:58:01,515 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 11:58:01,524 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:58:01,525 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:58:01,527 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:58:01,528 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 11:58:01,528 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:58:01,528 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 11:58:01,528 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:58:01,529 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 11:58:01,529 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:58:01,529 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 11:58:01,529 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:58:01,577 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-12 11:58:01,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:58:01,580 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:58:01,583 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:58:01,584 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-12 11:58:01,584 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:58:01,584 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 11:58:01,584 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:58:01,585 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 11:58:01,585 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:58:01,585 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 11:58:01,585 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:58:01,587 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-12 11:58:01,592 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:58:01,596 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:58:01,613 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:58:01,614 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 16
[2020-10-12 11:58:01,614 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:58:01,614 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-12 11:58:01,614 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:58:01,615 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 11:58:01,615 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:58:01,615 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-12 11:58:01,615 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:58:18,642 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2020-10-12 11:58:18,643 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424634308]
[2020-10-12 11:58:18,643 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-12 11:58:18,643 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23
[2020-10-12 11:58:18,644 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602577581]
[2020-10-12 11:58:18,658 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-12 11:58:18,658 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 11:58:18,659 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-12 11:58:18,660 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506
[2020-10-12 11:58:18,660 INFO  L87              Difference]: Start difference. First operand 5801 states and 9384 transitions. Second operand 23 states.
[2020-10-12 11:58:39,923 WARN  L193               SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 76
[2020-10-12 11:59:16,800 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 11:59:16,800 INFO  L93              Difference]: Finished difference Result 12907 states and 21400 transitions.
[2020-10-12 11:59:16,803 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2020-10-12 11:59:16,803 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states. Word has length 1719
[2020-10-12 11:59:16,806 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 11:59:16,840 INFO  L225             Difference]: With dead ends: 12907
[2020-10-12 11:59:16,840 INFO  L226             Difference]: Without dead ends: 7112
[2020-10-12 11:59:16,855 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640
[2020-10-12 11:59:16,864 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7112 states.
[2020-10-12 11:59:17,043 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7112 to 7105.
[2020-10-12 11:59:17,044 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7105 states.
[2020-10-12 11:59:17,069 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 10722 transitions.
[2020-10-12 11:59:17,070 INFO  L78                 Accepts]: Start accepts. Automaton has 7105 states and 10722 transitions. Word has length 1719
[2020-10-12 11:59:17,072 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 11:59:17,072 INFO  L479      AbstractCegarLoop]: Abstraction has 7105 states and 10722 transitions.
[2020-10-12 11:59:17,072 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-12 11:59:17,073 INFO  L276                IsEmpty]: Start isEmpty. Operand 7105 states and 10722 transitions.
[2020-10-12 11:59:17,150 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1723
[2020-10-12 11:59:17,150 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 11:59:17,153 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 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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]
[2020-10-12 11:59:17,154 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-12 11:59:17,154 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 11:59:17,154 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 11:59:17,155 INFO  L82        PathProgramCache]: Analyzing trace with hash 1136884491, now seen corresponding path program 1 times
[2020-10-12 11:59:17,156 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 11:59:17,156 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314199353]
[2020-10-12 11:59:17,156 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 11:59:17,293 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:59:17,323 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:59:17,377 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:59:17,501 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:59:18,420 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:59:22,462 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:59:22,462 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1748
[2020-10-12 11:59:22,462 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-12 11:59:22,463 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5164
[2020-10-12 11:59:22,463 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:59:22,463 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 27
[2020-10-12 11:59:22,463 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-12 11:59:22,464 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 798
[2020-10-12 11:59:22,464 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:59:26,044 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 11:59:26,046 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:59:26,047 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:59:26,050 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:59:26,050 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 11:59:26,050 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:59:26,051 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-12 11:59:26,051 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:59:26,051 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 11:59:26,051 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:59:26,051 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 11:59:26,052 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:59:26,090 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-12 11:59:26,094 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:59:26,096 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:59:26,102 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:59:26,102 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-12 11:59:26,103 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:59:26,103 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-12 11:59:26,103 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:59:26,103 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 11:59:26,104 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:59:26,104 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-12 11:59:26,104 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:59:26,108 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-12 11:59:26,112 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:59:26,115 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:59:26,126 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:59:26,150 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:59:26,167 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:59:26,168 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-10-12 11:59:26,168 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-12 11:59:26,168 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 55
[2020-10-12 11:59:26,168 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:59:26,168 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-12 11:59:26,169 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-12 11:59:26,169 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 19
[2020-10-12 11:59:26,169 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:59:36,399 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-12 11:59:36,400 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314199353]
[2020-10-12 11:59:36,400 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-12 11:59:36,400 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22
[2020-10-12 11:59:36,401 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903326311]
[2020-10-12 11:59:36,403 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-12 11:59:36,403 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 11:59:36,404 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-12 11:59:36,404 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462
[2020-10-12 11:59:36,404 INFO  L87              Difference]: Start difference. First operand 7105 states and 10722 transitions. Second operand 22 states.
[2020-10-12 12:00:25,419 WARN  L193               SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 51
[2020-10-12 12:00:27,556 WARN  L193               SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65
[2020-10-12 12:00:43,856 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 12:00:43,856 INFO  L93              Difference]: Finished difference Result 21381 states and 34243 transitions.
[2020-10-12 12:00:43,858 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-12 12:00:43,858 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states. Word has length 1722
[2020-10-12 12:00:43,859 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 12:00:43,919 INFO  L225             Difference]: With dead ends: 21381
[2020-10-12 12:00:43,919 INFO  L226             Difference]: Without dead ends: 14282
[2020-10-12 12:00:43,940 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650
[2020-10-12 12:00:43,957 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14282 states.
[2020-10-12 12:00:44,260 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14282 to 14217.
[2020-10-12 12:00:44,260 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 14217 states.
[2020-10-12 12:00:44,302 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14217 states to 14217 states and 18597 transitions.
[2020-10-12 12:00:44,303 INFO  L78                 Accepts]: Start accepts. Automaton has 14217 states and 18597 transitions. Word has length 1722
[2020-10-12 12:00:44,304 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 12:00:44,304 INFO  L479      AbstractCegarLoop]: Abstraction has 14217 states and 18597 transitions.
[2020-10-12 12:00:44,304 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-12 12:00:44,305 INFO  L276                IsEmpty]: Start isEmpty. Operand 14217 states and 18597 transitions.
[2020-10-12 12:00:44,428 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1729
[2020-10-12 12:00:44,429 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 12:00:44,431 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2020-10-12 12:00:44,431 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-12 12:00:44,431 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 12:00:44,432 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 12:00:44,433 INFO  L82        PathProgramCache]: Analyzing trace with hash -360904267, now seen corresponding path program 1 times
[2020-10-12 12:00:44,433 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 12:00:44,434 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605953251]
[2020-10-12 12:00:44,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 12:00:44,712 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 12:00:44,740 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:00:44,812 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:00:44,928 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 12:00:45,655 FATAL L256   erpolLogProxyWrapper]: Now shrinking...